Added in API level 1

Activity

Kotlin |Java

public class Activity
extends ContextThemeWrapper implements LayoutInflater.Factory2, Window.Callback, KeyEvent.Callback, View.OnCreateContextMenuListener, ComponentCallbacks2

java.lang.Object
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	android.view.ContextThemeWrapper
			↳	android.app.Activity

Known direct subclasses

AccountAuthenticatorActivity, ActivityGroup, AliasActivity, ExpandableListActivity, ListActivity, NativeActivity

AccountAuthenticatorActivity	This class was deprecated in API level 30. Applications should extend Activity themselves. This class is not compatible with AppCompat, and the functionality it provides is not complex.
ActivityGroup	This class was deprecated in API level 13. Use the new `Fragment` and `FragmentManager` APIs instead; these are also available on older platforms through the Android compatibility package.
AliasActivity	This class was deprecated in API level 30. Use `<activity-alias>` or subclass Activity directly.
ExpandableListActivity	This class was deprecated in API level 30. Use `RecyclerView` or use `ExpandableListView` directly
ListActivity	This class was deprecated in API level 30. Use `ListFragment` or `RecyclerView` to implement your Activity instead.
NativeActivity	Convenience for implementing an activity that will be implemented purely in native code.

Known indirect subclasses

LauncherActivity, PreferenceActivity, TabActivity

LauncherActivity	This class was deprecated in API level 30. Applications can implement this UI themselves using `RecyclerView` and `PackageManager.queryIntentActivities(Intent, int)`
PreferenceActivity	This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings.
TabActivity	This class was deprecated in API level 13. New applications should use Fragments instead of this class; to continue to run on older devices, you can use the v4 support library which provides a version of the Fragment API that is compatible down to `Build.VERSION_CODES.DONUT`.

An activity is a single, focused thing that the user can do. Almost all activities interact with the user, so the Activity class takes care of creating a window for you in which you can place your UI with setContentView(View). While activities are often presented to the user as full-screen windows, they can also be used in other ways: as floating windows (via a theme with R.attr.windowIsFloating set), Multi-Window mode or embedded into other windows. There are two methods almost all subclasses of Activity will implement:

onCreate(Bundle) is where you initialize your activity. Most importantly, here you will usually call setContentView(int) with a layout resource defining your UI, and using findViewById(int) to retrieve the widgets in that UI that you need to interact with programmatically.
onPause() is where you deal with the user pausing active interaction with the activity. Any changes made by the user should at this point be committed (usually to the ContentProvider holding the data). In this state the activity is still visible on screen.

To be of use with Context.startActivity(), all activity classes must have a corresponding <activity> declaration in their package's AndroidManifest.xml.

Topics covered here:

Fragments
Activity Lifecycle
Configuration Changes
Starting Activities and Getting Results
Saving Persistent State
Permissions
Process Lifecycle

Developer Guides

The Activity class is an important part of an application's overall lifecycle, and the way activities are launched and put together is a fundamental part of the platform's application model. For a detailed perspective on the structure of an Android application and how activities behave, please read the Application Fundamentals and Tasks and Back Stack developer guides.

You can also find a detailed discussion about how to create activities in the Activities developer guide.

Fragments

The FragmentActivity subclass can make use of the Fragment class to better modularize their code, build more sophisticated user interfaces for larger screens, and help scale their application between small and large screens.

For more information about using fragments, read the Fragments developer guide.

Activity Lifecycle

Activities in the system are managed as activity stacks. When a new activity is started, it is usually placed on the top of the current stack and becomes the running activity -- the previous activity always remains below it in the stack, and will not come to the foreground again until the new activity exits. There can be one or multiple activity stacks visible on screen.

An activity has essentially four states:

If an activity is in the foreground of the screen (at the highest position of the topmost stack), it is active or running. This is usually the activity that the user is currently interacting with.
If an activity has lost focus but is still presented to the user, it is visible. It is possible if a new non-full-sized or transparent activity has focus on top of your activity, another activity has higher position in multi-window mode, or the activity itself is not focusable in current windowing mode. Such activity is completely alive (it maintains all state and member information and remains attached to the window manager).
If an activity is completely obscured by another activity, it is stopped or hidden. It still retains all state and member information, however, it is no longer visible to the user so its window is hidden and it will often be killed by the system when memory is needed elsewhere.
The system can drop the activity from memory by either asking it to finish, or simply killing its process, making it destroyed. When it is displayed again to the user, it must be completely restarted and restored to its previous state.

The following diagram shows the important state paths of an Activity. The square rectangles represent callback methods you can implement to perform operations when the Activity moves between states. The colored ovals are major states the Activity can be in.

State diagram for an Android Activity Lifecycle.

There are three key loops you may be interested in monitoring within your activity:

The entire lifetime of an activity happens between the first call to onCreate(Bundle) through to a single final call to onDestroy(). An activity will do all setup of "global" state in onCreate(), and release all remaining resources in onDestroy(). For example, if it has a thread running in the background to download data from the network, it may create that thread in onCreate() and then stop the thread in onDestroy().
The visible lifetime of an activity happens between a call to onStart() until a corresponding call to onStop(). During this time the user can see the activity on-screen, though it may not be in the foreground and interacting with the user. Between these two methods you can maintain resources that are needed to show the activity to the user. For example, you can register a BroadcastReceiver in onStart() to monitor for changes that impact your UI, and unregister it in onStop() when the user no longer sees what you are displaying. The onStart() and onStop() methods can be called multiple times, as the activity becomes visible and hidden to the user.
The foreground lifetime of an activity happens between a call to onResume() until a corresponding call to onPause(). During this time the activity is visible, active and interacting with the user. An activity can frequently go between the resumed and paused states -- for example when the device goes to sleep, when an activity result is delivered, when a new intent is delivered -- so the code in these methods should be fairly lightweight.

The entire lifecycle of an activity is defined by the following Activity methods. All of these are hooks that you can override to do appropriate work when the activity changes state. All activities will implement onCreate(Bundle) to do their initial setup; many will also implement onPause() to commit changes to data and prepare to pause interacting with the user, and onStop() to handle no longer being visible on screen. You should always call up to your superclass when implementing these methods.

 public class Activity extends ApplicationContext {
     protected void onCreate(Bundle savedInstanceState);

     protected void onStart();

     protected void onRestart();

     protected void onResume();

     protected void onPause();

     protected void onStop();

     protected void onDestroy();
 }

In general the movement through an activity's lifecycle looks like this:

Method			Description	Killable?	Next
`onCreate()`			Called when the activity is first created. This is where you should do all of your normal static set up: create views, bind data to lists, etc. This method also provides you with a Bundle containing the activity's previously frozen state, if there was one. Always followed by `onStart()`.	No	`onStart()`
	`onRestart()`		Called after your activity has been stopped, prior to it being started again. Always followed by `onStart()`	No	`onStart()`
	`onStart()`		Called when the activity is becoming visible to the user. Followed by `onResume()` if the activity comes to the foreground, or `onStop()` if it becomes hidden.	No	`onResume()` or `onStop()`
		`onResume()`	Called when the activity will start interacting with the user. At this point your activity is at the top of its activity stack, with user input going to it. Always followed by `onPause()`.	No	`onPause()`
		`onPause()`	Called when the activity loses foreground state, is no longer focusable or before transition to stopped/hidden or destroyed state. The activity is still visible to user, so it's recommended to keep it visually active and continue updating the UI. Implementations of this method must be very quick because the next activity will not be resumed until this method returns. Followed by either `onResume()` if the activity returns back to the front, or `onStop()` if it becomes invisible to the user.	Pre-`Build.VERSION_CODES.HONEYCOMB`	`onResume()` or `onStop()`
	`onStop()`		Called when the activity is no longer visible to the user. This may happen either because a new activity is being started on top, an existing one is being brought in front of this one, or this one is being destroyed. This is typically used to stop animations and refreshing the UI, etc. Followed by either `onRestart()` if this activity is coming back to interact with the user, or `onDestroy()` if this activity is going away.	Yes	`onRestart()` or `onDestroy()`
`onDestroy()`			The final call you receive before your activity is destroyed. This can happen either because the activity is finishing (someone called `Activity#finish` on it), or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these two scenarios with the `isFinishing()` method.	Yes	nothing

Note the "Killable" column in the above table -- for those methods that are marked as being killable, after that method returns the process hosting the activity may be killed by the system at any time without another line of its code being executed. Because of this, you should use the onPause() method to write any persistent data (such as user edits) to storage. In addition, the method onSaveInstanceState(android.os.Bundle) is called before placing the activity in such a background state, allowing you to save away any dynamic instance state in your activity into the given Bundle, to be later received in onCreate(Bundle) if the activity needs to be re-created. See the Process Lifecycle section for more information on how the lifecycle of a process is tied to the activities it is hosting. Note that it is important to save persistent data in onPause() instead of onSaveInstanceState(Bundle) because the latter is not part of the lifecycle callbacks, so will not be called in every situation as described in its documentation.

Be aware that these semantics will change slightly between applications targeting platforms starting with Build.VERSION_CODES.HONEYCOMB vs. those targeting prior platforms. Starting with Honeycomb, an application is not in the killable state until its onStop() has returned. This impacts when onSaveInstanceState(android.os.Bundle) may be called (it may be safely called after onPause()) and allows an application to safely wait until onStop() to save persistent state.

For applications targeting platforms starting with Build.VERSION_CODES.P onSaveInstanceState(android.os.Bundle) will always be called after onStop(), so an application may safely perform fragment transactions in onStop() and will be able to save persistent state later.

For those methods that are not marked as being killable, the activity's process will not be killed by the system starting from the time the method is called and continuing after it returns. Thus an activity is in the killable state, for example, between after onStop() to the start of onResume(). Keep in mind that under extreme memory pressure the system can kill the application process at any time.

Configuration Changes

If the configuration of the device (as defined by the Resources.Configuration class) changes, then anything displaying a user interface will need to update to match that configuration. Because Activity is the primary mechanism for interacting with the user, it includes special support for handling configuration changes.

Unless you specify otherwise, a configuration change (such as a change in screen orientation, language, input devices, etc) will cause your current activity to be destroyed, going through the normal activity lifecycle process of onPause(), onStop(), and onDestroy() as appropriate. If the activity had been in the foreground or visible to the user, once onDestroy() is called in that instance then a new instance of the activity will be created, with whatever savedInstanceState the previous instance had generated from onSaveInstanceState(Bundle).

This is done because any application resource, including layout files, can change based on any configuration value. Thus the only safe way to handle a configuration change is to re-retrieve all resources, including layouts, drawables, and strings. Because activities must already know how to save their state and re-create themselves from that state, this is a convenient way to have an activity restart itself with a new configuration.

In some special cases, you may want to bypass restarting of your activity based on one or more types of configuration changes. This is done with the android:configChanges attribute in its manifest. For any types of configuration changes you say that you handle there, you will receive a call to your current activity's onConfigurationChanged(Configuration) method instead of being restarted. If a configuration change involves any that you do not handle, however, the activity will still be restarted and onConfigurationChanged(Configuration) will not be called.

Starting Activities and Getting Results

The startActivity(Intent) method is used to start a new activity, which will be placed at the top of the activity stack. It takes a single argument, an Intent, which describes the activity to be executed.

Sometimes you want to get a result back from an activity when it ends. For example, you may start an activity that lets the user pick a person in a list of contacts; when it ends, it returns the person that was selected. To do this, you call the startActivityForResult(Intent, int) version with a second integer parameter identifying the call. The result will come back through your onActivityResult(int, int, Intent) method.

When an activity exits, it can call setResult(int) to return data back to its parent. It must always supply a result code, which can be the standard results RESULT_CANCELED, RESULT_OK, or any custom values starting at RESULT_FIRST_USER. In addition, it can optionally return back an Intent containing any additional data it wants. All of this information appears back on the parent's Activity.onActivityResult(), along with the integer identifier it originally supplied.

If a child activity fails for any reason (such as crashing), the parent activity will receive a result with the code RESULT_CANCELED.

 public class MyActivity extends Activity {
     ...

     static final int PICK_CONTACT_REQUEST = 0;

     public boolean onKeyDown(int keyCode, KeyEvent event) {
         if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
             // When the user center presses, let them pick a contact.
             startActivityForResult(
                 new Intent(Intent.ACTION_PICK,
                 new Uri("content://contacts")),
                 PICK_CONTACT_REQUEST);
            return true;
         }
         return false;
     }

     protected void onActivityResult(int requestCode, int resultCode,
             Intent data) {
         if (requestCode == PICK_CONTACT_REQUEST) {
             if (resultCode == RESULT_OK) {
                 // A contact was picked.  Here we will just display it
                 // to the user.
                 startActivity(new Intent(Intent.ACTION_VIEW, data));
             }
         }
     }
 }

Saving Persistent State

There are generally two kinds of persistent state that an activity will deal with: shared document-like data (typically stored in a SQLite database using a content provider) and internal state such as user preferences.

For content provider data, we suggest that activities use an "edit in place" user model. That is, any edits a user makes are effectively made immediately without requiring an additional confirmation step. Supporting this model is generally a simple matter of following two rules:

When creating a new document, the backing database entry or file for it is created immediately. For example, if the user chooses to write a new email, a new entry for that email is created as soon as they start entering data, so that if they go to any other activity after that point this email will now appear in the list of drafts.
When an activity's onPause() method is called, it should commit to the backing content provider or file any changes the user has made. This ensures that those changes will be seen by any other activity that is about to run. You will probably want to commit your data even more aggressively at key times during your activity's lifecycle: for example before starting a new activity, before finishing your own activity, when the user switches between input fields, etc.

This model is designed to prevent data loss when a user is navigating between activities, and allows the system to safely kill an activity (because system resources are needed somewhere else) at any time after it has been stopped (or paused on platform versions before Build.VERSION_CODES.HONEYCOMB). Note this implies that the user pressing BACK from your activity does not mean "cancel" -- it means to leave the activity with its current contents saved away. Canceling edits in an activity must be provided through some other mechanism, such as an explicit "revert" or "undo" option.

See the content package for more information about content providers. These are a key aspect of how different activities invoke and propagate data between themselves.

The Activity class also provides an API for managing internal persistent state associated with an activity. This can be used, for example, to remember the user's preferred initial display in a calendar (day view or week view) or the user's default home page in a web browser.

Activity persistent state is managed with the method getPreferences(int), allowing you to retrieve and modify a set of name/value pairs associated with the activity. To use preferences that are shared across multiple application components (activities, receivers, services, providers), you can use the underlying Context.getSharedPreferences() method to retrieve a preferences object stored under a specific name. (Note that it is not possible to share settings data across application packages -- for that you will need a content provider.)

Here is an excerpt from a calendar activity that stores the user's preferred view mode in its persistent settings:

 public class CalendarActivity extends Activity {
     ...

     static final int DAY_VIEW_MODE = 0;
     static final int WEEK_VIEW_MODE = 1;

     private SharedPreferences mPrefs;
     private int mCurViewMode;

     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         mPrefs = getSharedPreferences(getLocalClassName(), MODE_PRIVATE);
         mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE);
     }

     protected void onPause() {
         super.onPause();

         SharedPreferences.Editor ed = mPrefs.edit();
         ed.putInt("view_mode", mCurViewMode);
         ed.commit();
     }
 }

Permissions

The ability to start a particular Activity can be enforced when it is declared in its manifest's <activity> tag. By doing so, other applications will need to declare a corresponding <uses-permission> element in their own manifest to be able to start that activity.

When starting an Activity you can set Intent.FLAG_GRANT_READ_URI_PERMISSION and/or Intent.FLAG_GRANT_WRITE_URI_PERMISSION on the Intent. This will grant the Activity access to the specific URIs in the Intent. Access will remain until the Activity has finished (it will remain across the hosting process being killed and other temporary destruction). As of Build.VERSION_CODES.GINGERBREAD, if the Activity was already created and a new Intent is being delivered to onNewIntent(android.content.Intent), any newly granted URI permissions will be added to the existing ones it holds.

See the Security and Permissions document for more information on permissions and security in general.

Process Lifecycle

The Android system attempts to keep an application process around for as long as possible, but eventually will need to remove old processes when memory runs low. As described in Activity Lifecycle, the decision about which process to remove is intimately tied to the state of the user's interaction with it. In general, there are four states a process can be in based on the activities running in it, listed here in order of importance. The system will kill less important processes (the last ones) before it resorts to killing more important processes (the first ones).

The foreground activity (the activity at the top of the screen that the user is currently interacting with) is considered the most important. Its process will only be killed as a last resort, if it uses more memory than is available on the device. Generally at this point the device has reached a memory paging state, so this is required in order to keep the user interface responsive.
A visible activity (an activity that is visible to the user but not in the foreground, such as one sitting behind a foreground dialog or next to other activities in multi-window mode) is considered extremely important and will not be killed unless that is required to keep the foreground activity running.
A background activity (an activity that is not visible to the user and has been stopped) is no longer critical, so the system may safely kill its process to reclaim memory for other foreground or visible processes. If its process needs to be killed, when the user navigates back to the activity (making it visible on the screen again), its onCreate(Bundle) method will be called with the savedInstanceState it had previously supplied in onSaveInstanceState(Bundle) so that it can restart itself in the same state as the user last left it.
An empty process is one hosting no activities or other application components (such as Service or BroadcastReceiver classes). These are killed very quickly by the system as memory becomes low. For this reason, any background operation you do outside of an activity must be executed in the context of an activity BroadcastReceiver or Service to ensure that the system knows it needs to keep your process around.

Sometimes an Activity may need to do a long-running operation that exists independently of the activity lifecycle itself. An example may be a camera application that allows you to upload a picture to a web site. The upload may take a long time, and the application should allow the user to leave the application while it is executing. To accomplish this, your Activity should start a Service in which the upload takes place. This allows the system to properly prioritize your process (considering it to be more important than other non-visible applications) for the duration of the upload, independent of whether the original activity is paused, stopped, or finished.

Summary

Nested classes
`interface`	`Activity.ScreenCaptureCallback` Interface for observing screen captures of an `Activity`.

Constants
`int`	`DEFAULT_KEYS_DIALER` Use with `setDefaultKeyMode(int)` to launch the dialer during default key handling.
`int`	`DEFAULT_KEYS_DISABLE` Use with `setDefaultKeyMode(int)` to turn off default handling of keys.
`int`	`DEFAULT_KEYS_SEARCH_GLOBAL` Use with `setDefaultKeyMode(int)` to specify that unhandled keystrokes will start a global search (typically web search, but some platforms may define alternate methods for global search) See `android.app.SearchManager` for more details.
`int`	`DEFAULT_KEYS_SEARCH_LOCAL` Use with `setDefaultKeyMode(int)` to specify that unhandled keystrokes will start an application-defined search.
`int`	`DEFAULT_KEYS_SHORTCUT` Use with `setDefaultKeyMode(int)` to execute a menu shortcut in default key handling.
`int`	`FULLSCREEN_MODE_REQUEST_ENTER` Request type of `requestFullscreenMode(int, android.os.OutcomeReceiver)`, to request enter fullscreen mode from multi-window mode.
`int`	`FULLSCREEN_MODE_REQUEST_EXIT` Request type of `requestFullscreenMode(int, android.os.OutcomeReceiver)`, to request exiting the requested fullscreen mode and restore to the previous multi-window mode.
`int`	`OVERRIDE_TRANSITION_CLOSE` Request type of `overrideActivityTransition(int, int, int)` or `overrideActivityTransition(int, int, int, int)`, to override the closing transition.
`int`	`OVERRIDE_TRANSITION_OPEN` Request type of `overrideActivityTransition(int, int, int)` or `overrideActivityTransition(int, int, int, int)`, to override the opening transition.
`int`	`RESULT_CANCELED` Standard activity result: operation canceled.
`int`	`RESULT_FIRST_USER` Start of user-defined activity results.
`int`	`RESULT_OK` Standard activity result: operation succeeded.

Inherited constants

From class android.content.Context

`String`	`ACCESSIBILITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `AccessibilityManager` for giving the user feedback for UI events through the registered event listeners.
`String`	`ACCOUNT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `AccountManager` for receiving intents at a time of your choosing.
`String`	`ACTIVITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ActivityManager` for interacting with the global system state.
`String`	`ALARM_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `AlarmManager` for receiving intents at a time of your choosing.
`String`	`APPWIDGET_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `AppWidgetManager` for accessing AppWidgets.
`String`	`APP_OPS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `AppOpsManager` for tracking application operations on the device.
`String`	`APP_SEARCH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `AppSearchManager` for indexing and querying app data managed by the system.
`String`	`AUDIO_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `AudioManager` for handling management of volume, ringer modes and audio routing.
`String`	`BATTERY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `BatteryManager` for managing battery state.
`int`	`BIND_ABOVE_CLIENT` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: indicates that the client application binding to this service considers the service to be more important than the app itself.
`int`	`BIND_ADJUST_WITH_ACTIVITY` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: If binding from an activity, allow the target service's process importance to be raised based on whether the activity is visible to the user, regardless whether another flag is used to reduce the amount that the client process's overall importance is used to impact it.
`int`	`BIND_ALLOW_ACTIVITY_STARTS` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: If binding from an app that is visible, the bound service is allowed to start an activity from background.
`int`	`BIND_ALLOW_OOM_MANAGEMENT` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: allow the process hosting the bound service to go through its normal memory management.
`int`	`BIND_AUTO_CREATE` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: automatically create the service as long as the binding exists.
`int`	`BIND_DEBUG_UNBIND` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: include debugging help for mismatched calls to unbind.
`int`	`BIND_EXTERNAL_SERVICE` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: The service being bound is an `isolated`, `external` service.
`long`	`BIND_EXTERNAL_SERVICE_LONG` Works in the same way as `BIND_EXTERNAL_SERVICE`, but it's defined as a `long` value that is compatible to `BindServiceFlags`.
`int`	`BIND_IMPORTANT` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: this service is very important to the client, so should be brought to the foreground process level when the client is.
`int`	`BIND_INCLUDE_CAPABILITIES` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: If binding from an app that has specific capabilities due to its foreground state such as an activity or foreground service, then this flag will allow the bound app to get the same capabilities, as long as it has the required permissions as well.
`int`	`BIND_NOT_FOREGROUND` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: don't allow this binding to raise the target service's process to the foreground scheduling priority.
`int`	`BIND_NOT_PERCEPTIBLE` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: If binding from an app that is visible or user-perceptible, lower the target service's importance to below the perceptible level.
`int`	`BIND_PACKAGE_ISOLATED_PROCESS` Flag for `bindIsolatedService(Intent, BindServiceFlags, String, Executor, ServiceConnection)`: Bind the service into a shared isolated process, but only with other isolated services from the same package that declare the same process name.
`int`	`BIND_SHARED_ISOLATED_PROCESS` Flag for `bindIsolatedService(Intent, BindServiceFlags, String, Executor, ServiceConnection)`: Bind the service into a shared isolated process.
`int`	`BIND_WAIVE_PRIORITY` Flag for `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`: don't impact the scheduling or memory management priority of the target service's hosting process.
`String`	`BIOMETRIC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `BiometricManager` for handling biometric and PIN/pattern/password authentication.
`String`	`BLOB_STORE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `BlobStoreManager` for contributing and accessing data blobs from the blob store maintained by the system.
`String`	`BLUETOOTH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `BluetoothManager` for using Bluetooth.
`String`	`BUGREPORT_SERVICE` Service to capture a bugreport.
`String`	`CAMERA_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `CameraManager` for interacting with camera devices.
`String`	`CAPTIONING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `CaptioningManager` for obtaining captioning properties and listening for changes in captioning preferences.
`String`	`CARRIER_CONFIG_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `CarrierConfigManager` for reading carrier configuration values.
`String`	`CLIPBOARD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ClipboardManager` for accessing and modifying the contents of the global clipboard.
`String`	`COMPANION_DEVICE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `CompanionDeviceManager` for managing companion devices
`String`	`CONNECTIVITY_DIAGNOSTICS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ConnectivityDiagnosticsManager` for performing network connectivity diagnostics as well as receiving network connectivity information from the system.
`String`	`CONNECTIVITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ConnectivityManager` for handling management of network connections.
`String`	`CONSUMER_IR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ConsumerIrManager` for transmitting infrared signals from the device.
`String`	`CONTACT_KEYS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `E2eeContactKeysManager` to managing contact keys.
`int`	`CONTEXT_IGNORE_SECURITY` Flag for use with `createPackageContext(String, int)`: ignore any security restrictions on the Context being requested, allowing it to always be loaded.
`int`	`CONTEXT_INCLUDE_CODE` Flag for use with `createPackageContext(String, int)`: include the application code with the context.
`int`	`CONTEXT_RESTRICTED` Flag for use with `createPackageContext(String, int)`: a restricted context may disable specific features.
`String`	`CREDENTIAL_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `CredentialManager` to authenticate a user to your app.
`String`	`CROSS_PROFILE_APPS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `CrossProfileApps` for cross profile operations.
`int`	`DEVICE_ID_DEFAULT` The default device ID, which is the ID of the primary (non-virtual) device.
`int`	`DEVICE_ID_INVALID` Invalid device ID.
`String`	`DEVICE_LOCK_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `DeviceLockManager`.
`String`	`DEVICE_POLICY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `DevicePolicyManager` for working with global device policy management.
`String`	`DISPLAY_HASH_SERVICE` Use with `getSystemService(java.lang.String)` to access `DisplayHashManager` to handle display hashes.
`String`	`DISPLAY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `DisplayManager` for interacting with display devices.
`String`	`DOMAIN_VERIFICATION_SERVICE` Use with `getSystemService(java.lang.String)` to access `DomainVerificationManager` to retrieve approval and user state for declared web domains.
`String`	`DOWNLOAD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `DownloadManager` for requesting HTTP downloads.
`String`	`DROPBOX_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `DropBoxManager` instance for recording diagnostic logs.
`String`	`EUICC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `EuiccManager` to manage the device eUICC (embedded SIM).
`String`	`FILE_INTEGRITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `FileIntegrityManager`.
`String`	`FINGERPRINT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `FingerprintManager` for handling management of fingerprints.
`String`	`GAME_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `GameManager`.
`String`	`GRAMMATICAL_INFLECTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `GrammaticalInflectionManager`.
`String`	`HARDWARE_PROPERTIES_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `HardwarePropertiesManager` for accessing the hardware properties service.
`String`	`HEALTHCONNECT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `HealthConnectManager`.
`String`	`INPUT_METHOD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `InputMethodManager` for accessing input methods.
`String`	`INPUT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `InputManager` for interacting with input devices.
`String`	`IPSEC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `IpSecManager` for encrypting Sockets or Networks with IPSec.
`String`	`JOB_SCHEDULER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `JobScheduler` instance for managing occasional background tasks.
`String`	`KEYGUARD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `KeyguardManager` for controlling keyguard.
`String`	`LAUNCHER_APPS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `LauncherApps` for querying and monitoring launchable apps across profiles of a user.
`String`	`LAYOUT_INFLATER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `LayoutInflater` for inflating layout resources in this context.
`String`	`LOCALE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `LocaleManager`.
`String`	`LOCATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `LocationManager` for controlling location updates.
`String`	`MEDIA_COMMUNICATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `MediaCommunicationManager` for managing `MediaSession2`.
`String`	`MEDIA_METRICS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `MediaMetricsManager` for interacting with media metrics on the device.
`String`	`MEDIA_PROJECTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `MediaProjectionManager` instance for managing media projection sessions.
`String`	`MEDIA_ROUTER_SERVICE` Use with `getSystemService(Class)` to retrieve a `MediaRouter` for controlling and managing routing of media.
`String`	`MEDIA_SESSION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `MediaSessionManager` for managing media Sessions.
`String`	`MIDI_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `MidiManager` for accessing the MIDI service.
`int`	`MODE_APPEND` File creation mode: for use with `openFileOutput(String, int)`, if the file already exists then write data to the end of the existing file instead of erasing it.
`int`	`MODE_ENABLE_WRITE_AHEAD_LOGGING` Database open flag: when set, the database is opened with write-ahead logging enabled by default.
`int`	`MODE_MULTI_PROCESS` This constant was deprecated in API level 23. MODE_MULTI_PROCESS does not work reliably in some versions of Android, and furthermore does not provide any mechanism for reconciling concurrent modifications across processes. Applications should not attempt to use it. Instead, they should use an explicit cross-process data management approach such as `ContentProvider`.
`int`	`MODE_NO_LOCALIZED_COLLATORS` Database open flag: when set, the database is opened without support for localized collators.
`int`	`MODE_PRIVATE` File creation mode: the default mode, where the created file can only be accessed by the calling application (or all applications sharing the same user ID).
`int`	`MODE_WORLD_READABLE` This constant was deprecated in API level 17. Creating world-readable files is very dangerous, and likely to cause security holes in applications. It is strongly discouraged; instead, applications should use more formal mechanism for interactions such as `ContentProvider`, `BroadcastReceiver`, and `Service`. There are no guarantees that this access mode will remain on a file, such as when it goes through a backup and restore.
`int`	`MODE_WORLD_WRITEABLE` This constant was deprecated in API level 17. Creating world-writable files is very dangerous, and likely to cause security holes in applications. It is strongly discouraged; instead, applications should use more formal mechanism for interactions such as `ContentProvider`, `BroadcastReceiver`, and `Service`. There are no guarantees that this access mode will remain on a file, such as when it goes through a backup and restore.
`String`	`NETWORK_STATS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `NetworkStatsManager` for querying network usage stats.
`String`	`NFC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `NfcManager` for using NFC.
`String`	`NOTIFICATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `NotificationManager` for informing the user of background events.
`String`	`NSD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `NsdManager` for handling management of network service discovery
`String`	`OVERLAY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `OverlayManager` for managing overlay packages.
`String`	`PEOPLE_SERVICE` Use with `getSystemService(java.lang.String)` to access a `PeopleManager` to interact with your published conversations.
`String`	`PERFORMANCE_HINT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `PerformanceHintManager` for accessing the performance hinting service.
`String`	`PERSISTENT_DATA_BLOCK_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `PersistentDataBlockManager` instance for interacting with a storage device that lives across factory resets.
`String`	`POWER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `PowerManager` for controlling power management, including "wake locks," which let you keep the device on while you're running long tasks.
`String`	`PRINT_SERVICE` `PrintManager` for printing and managing printers and print tasks.
`String`	`PROFILING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `ProfilingManager`.
`int`	`RECEIVER_EXPORTED` Flag for `registerReceiver(BroadcastReceiver, IntentFilter)`: The receiver can receive broadcasts from other Apps.
`int`	`RECEIVER_NOT_EXPORTED` Flag for `registerReceiver(BroadcastReceiver, IntentFilter)`: The receiver cannot receive broadcasts from other Apps.
`int`	`RECEIVER_VISIBLE_TO_INSTANT_APPS` Flag for `registerReceiver(BroadcastReceiver, IntentFilter)`: The receiver can receive broadcasts from Instant Apps.
`String`	`RESTRICTIONS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `RestrictionsManager` for retrieving application restrictions and requesting permissions for restricted operations.
`String`	`ROLE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `RoleManager` for managing roles.
`String`	`SEARCH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `SearchManager` for handling searches.
`String`	`SECURITY_STATE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `SecurityStateManager` for accessing the security state manager service.
`String`	`SENSOR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `SensorManager` for accessing sensors.
`String`	`SHORTCUT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ShortcutManager` for accessing the launcher shortcut service.
`String`	`STATUS_BAR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `StatusBarManager` for interacting with the status bar and quick settings.
`String`	`STORAGE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `StorageManager` for accessing system storage functions.
`String`	`STORAGE_STATS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `StorageStatsManager` for accessing system storage statistics.
`String`	`SYSTEM_HEALTH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `SystemHealthManager` for accessing system health (battery, power, memory, etc) metrics.
`String`	`TELECOM_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TelecomManager` to manage telecom-related features of the device.
`String`	`TELEPHONY_IMS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `ImsManager`.
`String`	`TELEPHONY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TelephonyManager` for handling management the telephony features of the device.
`String`	`TELEPHONY_SUBSCRIPTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `SubscriptionManager` for handling management the telephony subscriptions of the device.
`String`	`TEXT_CLASSIFICATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TextClassificationManager` for text classification services.
`String`	`TEXT_SERVICES_MANAGER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TextServicesManager` for accessing text services.
`String`	`TV_INPUT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TvInputManager` for interacting with TV inputs on the device.
`String`	`TV_INTERACTIVE_APP_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TvInteractiveAppManager` for interacting with TV interactive applications on the device.
`String`	`UI_MODE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `UiModeManager` for controlling UI modes.
`String`	`USAGE_STATS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `UsageStatsManager` for querying device usage stats.
`String`	`USB_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `UsbManager` for access to USB devices (as a USB host) and for controlling this device's behavior as a USB device.
`String`	`USER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `UserManager` for managing users on devices that support multiple users.
`String`	`VIBRATOR_MANAGER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `VibratorManager` for accessing the device vibrators, interacting with individual ones and playing synchronized effects on multiple vibrators.
`String`	`VIBRATOR_SERVICE` This constant was deprecated in API level 31. Use `VibratorManager` to retrieve the default system vibrator.
`String`	`VIRTUAL_DEVICE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `VirtualDeviceManager` for managing virtual devices.
`String`	`VPN_MANAGEMENT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `VpnManager` to manage profiles for the platform built-in VPN.
`String`	`WALLPAPER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a com.android.server.WallpaperService for accessing wallpapers.
`String`	`WIFI_AWARE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `WifiAwareManager` for handling management of Wi-Fi Aware.
`String`	`WIFI_P2P_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `WifiP2pManager` for handling management of Wi-Fi peer-to-peer connections.
`String`	`WIFI_RTT_RANGING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `WifiRttManager` for ranging devices with wifi.
`String`	`WIFI_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `WifiManager` for handling management of Wi-Fi access.
`String`	`WINDOW_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `WindowManager` for accessing the system's window manager.

From interface android.content.ComponentCallbacks2

`int`	`TRIM_MEMORY_BACKGROUND` Level for `onTrimMemory(int)`: the process has gone on to the LRU list.
`int`	`TRIM_MEMORY_COMPLETE` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_MODERATE` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_RUNNING_CRITICAL` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_RUNNING_LOW` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_RUNNING_MODERATE` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_UI_HIDDEN` Level for `onTrimMemory(int)`: the process had been showing a user interface, and is no longer doing so.

Fields
`protected static final int[]`	`FOCUSED_STATE_SET`

Public constructors
`Activity()`

Public methods
`void`	`addContentView(View view, ViewGroup.LayoutParams params)` Add an additional content view to the activity.
`void`	`clearOverrideActivityTransition(int overrideType)` Clears the animations which are set from `overrideActivityTransition(int, int, int)`.
`void`	`closeContextMenu()` Programmatically closes the most recently opened context menu, if showing.
`void`	`closeOptionsMenu()` Progammatically closes the options menu.
`PendingIntent`	`createPendingResult(int requestCode, Intent data, int flags)` Create a new PendingIntent object which you can hand to others for them to use to send result data back to your `onActivityResult(int, int, Intent)` callback.
`final void`	`dismissDialog(int id)` This method was deprecated in API level 15. Use the new `DialogFragment` class with `FragmentManager` instead; this is also available on older platforms through the Android compatibility package.
`final void`	`dismissKeyboardShortcutsHelper()` Dismiss the Keyboard Shortcuts screen.
`boolean`	`dispatchGenericMotionEvent(MotionEvent ev)` Called to process generic motion events.
`boolean`	`dispatchKeyEvent(KeyEvent event)` Called to process key events.
`boolean`	`dispatchKeyShortcutEvent(KeyEvent event)` Called to process a key shortcut event.
`boolean`	`dispatchPopulateAccessibilityEvent(AccessibilityEvent event)` Called to process population of `AccessibilityEvent`s.
`boolean`	`dispatchTouchEvent(MotionEvent ev)` Called to process touch screen events.
`boolean`	`dispatchTrackballEvent(MotionEvent ev)` Called to process trackball events.
`void`	`dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args)` Print the Activity's state into the given stream.
`boolean`	`enterPictureInPictureMode(PictureInPictureParams params)` Puts the activity in picture-in-picture mode if possible in the current system state.
`void`	`enterPictureInPictureMode()` Puts the activity in picture-in-picture mode if possible in the current system state.
`<T extends View> T`	`findViewById(int id)` Finds a view that was identified by the `android:id` XML attribute that was processed in `onCreate(Bundle)`.
`void`	`finish()` Call this when your activity is done and should be closed.
`void`	`finishActivity(int requestCode)` Force finish another activity that you had previously started with `startActivityForResult(Intent, int)`.
`void`	`finishActivityFromChild(Activity child, int requestCode)` This method was deprecated in API level 30. Use `finishActivity(int)` instead.
`void`	`finishAffinity()` Finish this activity as well as all activities immediately below it in the current task that have the same affinity.
`void`	`finishAfterTransition()` Reverses the Activity Scene entry Transition and triggers the calling Activity to reverse its exit Transition.
`void`	`finishAndRemoveTask()` Call this when your activity is done and should be closed and the task should be completely removed as a part of finishing the root activity of the task.
`void`	`finishFromChild(Activity child)` This method was deprecated in API level 30. Use `finish()` instead.
`ActionBar`	`getActionBar()` Retrieve a reference to this activity's ActionBar.
`final Application`	`getApplication()` Return the application that owns this activity.
`ComponentCaller`	`getCaller()` Returns the ComponentCaller instance of the app that started this activity.
`ComponentName`	`getCallingActivity()` Return the name of the activity that invoked this activity.
`String`	`getCallingPackage()` Return the name of the package that invoked this activity.
`int`	`getChangingConfigurations()` If this activity is being destroyed because it can not handle a configuration parameter being changed (and thus its `onConfigurationChanged(android.content.res.Configuration)` method is not being called), then you can use this method to discover the set of changes that have occurred while in the process of being destroyed.
`ComponentName`	`getComponentName()` Returns the complete component name of this activity.
`Scene`	`getContentScene()` Retrieve the `Scene` representing this window's current content.
`TransitionManager`	`getContentTransitionManager()` Retrieve the `TransitionManager` responsible for default transitions in this window.
`ComponentCaller`	`getCurrentCaller()` Returns the ComponentCaller instance of the app that re-launched this activity with a new intent via `onNewIntent(Intent)` or `onActivityResult(int, int, Intent)`.
`View`	`getCurrentFocus()` Calls `Window.getCurrentFocus()` on the Window of this Activity to return the currently focused view.
`FragmentManager`	`getFragmentManager()` This method was deprecated in API level 28. Use `FragmentActivity.getSupportFragmentManager()`
`ComponentCaller`	`getInitialCaller()` Returns the ComponentCaller instance of the app that initially launched this activity.
`Intent`	`getIntent()` Returns the intent that started this activity.
`Object`	`getLastNonConfigurationInstance()` Retrieve the non-configuration instance data that was previously returned by `onRetainNonConfigurationInstance()`.
`String`	`getLaunchedFromPackage()` Returns the package name of the app that initially launched this activity.
`int`	`getLaunchedFromUid()` Returns the uid of the app that initially launched this activity.
`LayoutInflater`	`getLayoutInflater()` Convenience for calling `Window.getLayoutInflater()`.
`LoaderManager`	`getLoaderManager()` This method was deprecated in API level 28. Use `FragmentActivity.getSupportLoaderManager()`
`String`	`getLocalClassName()` Returns class name for this activity with the package prefix removed.
`int`	`getMaxNumPictureInPictureActions()` Return the number of actions that will be displayed in the picture-in-picture UI when the user interacts with the activity currently in picture-in-picture mode.
`final MediaController`	`getMediaController()` Gets the controller which should be receiving media key and volume events while this activity is in the foreground.
`MenuInflater`	`getMenuInflater()` Returns a `MenuInflater` with this context.
`OnBackInvokedDispatcher`	`getOnBackInvokedDispatcher()` Returns the `OnBackInvokedDispatcher` instance associated with the window that this activity is attached to.
`final Activity`	`getParent()` This method was deprecated in API level 35. `ActivityGroup` is deprecated.
`Intent`	`getParentActivityIntent()` Obtain an `Intent` that will launch an explicit target activity specified by this activity's logical parent.
`SharedPreferences`	`getPreferences(int mode)` Retrieve a `SharedPreferences` object for accessing preferences that are private to this activity.
`Uri`	`getReferrer()` Return information about who launched this activity.
`int`	`getRequestedOrientation()` Return the current requested orientation of the activity.
`final SearchEvent`	`getSearchEvent()` During the onSearchRequested() callbacks, this function will return the `SearchEvent` that triggered the callback, if it exists.
`final SplashScreen`	`getSplashScreen()` Get the interface that activity use to talk to the splash screen.
`Object`	`getSystemService(String name)` Return the handle to a system-level service by name.
`int`	`getTaskId()` Return the identifier of the task this activity is in.
`final CharSequence`	`getTitle()`
`final int`	`getTitleColor()`
`VoiceInteractor`	`getVoiceInteractor()` Retrieve the active `VoiceInteractor` that the user is going through to interact with this activity.
`final int`	`getVolumeControlStream()` Gets the suggested audio stream whose volume should be changed by the hardware volume controls.
`Window`	`getWindow()` Retrieve the current `Window` for the activity.
`WindowManager`	`getWindowManager()` Retrieve the window manager for showing custom windows.
`boolean`	`hasWindowFocus()` Returns true if this activity's main window currently has window focus.
`void`	`invalidateOptionsMenu()` Declare that the options menu has changed, so should be recreated.
`boolean`	`isActivityTransitionRunning()` Returns whether there are any activity transitions currently running on this activity.
`boolean`	`isChangingConfigurations()` Check to see whether this activity is in the process of being destroyed in order to be recreated with a new configuration.
`final boolean`	`isChild()` This method was deprecated in API level 35. `ActivityGroup` is deprecated.
`boolean`	`isDestroyed()` Returns true if the final `onDestroy()` call has been made on the Activity, so this instance is now dead.
`boolean`	`isFinishing()` Check to see whether this activity is in the process of finishing, either because you called `finish()` on it or someone else has requested that it finished.
`boolean`	`isImmersive()` Bit indicating that this activity is "immersive" and should not be interrupted by notifications if possible.
`boolean`	`isInMultiWindowMode()` Returns true if the activity is currently in multi-window mode.
`boolean`	`isInPictureInPictureMode()` Returns true if the activity is currently in picture-in-picture mode.
`boolean`	`isLaunchedFromBubble()` Indicates whether this activity is launched from a bubble.
`boolean`	`isLocalVoiceInteractionSupported()` Queries whether the currently enabled voice interaction service supports returning a voice interactor for use by the activity.
`boolean`	`isTaskRoot()` Return whether this activity is the root of a task.
`boolean`	`isVoiceInteraction()` Check whether this activity is running as part of a voice interaction with the user.
`boolean`	`isVoiceInteractionRoot()` Like `isVoiceInteraction()`, but only returns `true` if this is also the root of a voice interaction.
`final Cursor`	`managedQuery(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)` This method was deprecated in API level 15. Use `CursorLoader` instead.
`boolean`	`moveTaskToBack(boolean nonRoot)` Move the task containing this activity to the back of the activity stack.
`boolean`	`navigateUpTo(Intent upIntent)` Navigate from this activity to the activity specified by upIntent, finishing this activity in the process.
`boolean`	`navigateUpToFromChild(Activity child, Intent upIntent)` This method was deprecated in API level 30. Use `navigateUpTo(android.content.Intent)` instead.
`void`	`onActionModeFinished(ActionMode mode)` Notifies the activity that an action mode has finished.
`void`	`onActionModeStarted(ActionMode mode)` Notifies the Activity that an action mode has been started.
`void`	`onActivityReenter(int resultCode, Intent data)` Called when an activity you launched with an activity transition exposes this Activity through a returning activity transition, giving you the resultCode and any additional data from it.
`void`	`onActivityResult(int requestCode, int resultCode, Intent data, ComponentCaller caller)` Same as `onActivityResult(int, int, android.content.Intent)`, but with an extra parameter for the ComponentCaller instance associated with the app that sent the result.
`void`	`onAttachFragment(Fragment fragment)` This method was deprecated in API level 28. Use `FragmentActivity.onAttachFragment(androidx.fragment.app.Fragment)`
`void`	`onAttachedToWindow()` Called when the main window associated with the activity has been attached to the window manager.
`void`	`onBackPressed()` This method was deprecated in API level 33. Use `OnBackInvokedCallback` or `androidx.activity.OnBackPressedCallback` to handle back navigation instead. Starting from Android 13 (API level 33), back event handling is moving to an ahead-of-time model and `Activity#onBackPressed()` and `KeyEvent#KEYCODE_BACK` should not be used to handle back events (back gesture or back button click). Instead, an `OnBackInvokedCallback` should be registered using `Activity#getOnBackInvokedDispatcher()` `.registerOnBackInvokedCallback(priority, callback)`.
`void`	`onConfigurationChanged(Configuration newConfig)` Called by the system when the device configuration changes while your activity is running.
`void`	`onContentChanged()` This hook is called whenever the content view of the screen changes (due to a call to `Window.setContentView` or `Window.addContentView`).
`boolean`	`onContextItemSelected(MenuItem item)` This hook is called whenever an item in a context menu is selected.
`void`	`onContextMenuClosed(Menu menu)` This hook is called whenever the context menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).
`void`	`onCreate(Bundle savedInstanceState, PersistableBundle persistentState)` Same as `onCreate(android.os.Bundle)` but called for those activities created with the attribute `R.attr.persistableMode` set to `persistAcrossReboots`.
`void`	`onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)` Called when a context menu for the `view` is about to be shown.
`CharSequence`	`onCreateDescription()` Generate a new description for this activity.
`void`	`onCreateNavigateUpTaskStack(TaskStackBuilder builder)` Define the synthetic task stack that will be generated during Up navigation from a different task.
`boolean`	`onCreateOptionsMenu(Menu menu)` Initialize the contents of the Activity's standard options menu.
`boolean`	`onCreatePanelMenu(int featureId, Menu menu)` Default implementation of `Window.Callback.onCreatePanelMenu(int, Menu)` for activities.
`View`	`onCreatePanelView(int featureId)` Default implementation of `Window.Callback.onCreatePanelView(int)` for activities.
`boolean`	`onCreateThumbnail(Bitmap outBitmap, Canvas canvas)` This method was deprecated in API level 28. Method doesn't do anything and will be removed in the future.
`View`	`onCreateView(View parent, String name, Context context, AttributeSet attrs)` Standard implementation of `LayoutInflater.Factory2.onCreateView(View, String, Context, AttributeSet)` used when inflating with the LayoutInflater returned by `Context.getSystemService(Class)`.
`View`	`onCreateView(String name, Context context, AttributeSet attrs)` Standard implementation of `LayoutInflater.Factory.onCreateView(String, Context, AttributeSet)` used when inflating with the LayoutInflater returned by `Context.getSystemService(Class)`.
`void`	`onDetachedFromWindow()` Called when the main window associated with the activity has been detached from the window manager.
`void`	`onEnterAnimationComplete()` Activities cannot draw during the period that their windows are animating in.
`boolean`	`onGenericMotionEvent(MotionEvent event)` Called when a generic motion event was not handled by any of the views inside of the activity.
`void`	`onGetDirectActions(CancellationSignal cancellationSignal, Consumer<List<DirectAction>> callback)` Returns the list of direct actions supported by the app.
`boolean`	`onKeyDown(int keyCode, KeyEvent event)` Called when a key was pressed down and not handled by any of the views inside of the activity.
`boolean`	`onKeyLongPress(int keyCode, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyLongPress()`: always returns false (doesn't handle the event).
`boolean`	`onKeyMultiple(int keyCode, int repeatCount, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyMultiple()`: always returns false (doesn't handle the event).
`boolean`	`onKeyShortcut(int keyCode, KeyEvent event)` Called when a key shortcut event is not handled by any of the views in the Activity.
`boolean`	`onKeyUp(int keyCode, KeyEvent event)` Called when a key was released and not handled by any of the views inside of the activity.
`void`	`onLocalVoiceInteractionStarted()` Callback to indicate that `startLocalVoiceInteraction(android.os.Bundle)` has resulted in a voice interaction session being started.
`void`	`onLocalVoiceInteractionStopped()` Callback to indicate that the local voice interaction has stopped either because it was requested through a call to `stopLocalVoiceInteraction()` or because it was canceled by the user.
`void`	`onLowMemory()` This is called when the overall system is running low on memory, and actively running processes should trim their memory usage.
`boolean`	`onMenuItemSelected(int featureId, MenuItem item)` Default implementation of `Window.Callback.onMenuItemSelected(int, MenuItem)` for activities.
`boolean`	`onMenuOpened(int featureId, Menu menu)` Called when a panel's menu is opened by the user.
`void`	`onMultiWindowModeChanged(boolean isInMultiWindowMode)` This method was deprecated in API level 26. Use `onMultiWindowModeChanged(boolean, android.content.res.Configuration)` instead.
`void`	`onMultiWindowModeChanged(boolean isInMultiWindowMode, Configuration newConfig)` Called by the system when the activity changes from fullscreen mode to multi-window mode and visa-versa.
`boolean`	`onNavigateUp()` This method is called whenever the user chooses to navigate Up within your application's activity hierarchy from the action bar.
`boolean`	`onNavigateUpFromChild(Activity child)` This method was deprecated in API level 30. Use `onNavigateUp()` instead.
`void`	`onNewIntent(Intent intent, ComponentCaller caller)` Same as `onNewIntent(android.content.Intent)`, but with an extra parameter for the ComponentCaller instance associated with the app that sent the intent.
`boolean`	`onOptionsItemSelected(MenuItem item)` This hook is called whenever an item in your options menu is selected.
`void`	`onOptionsMenuClosed(Menu menu)` This hook is called whenever the options menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).
`void`	`onPanelClosed(int featureId, Menu menu)` Default implementation of `Window.Callback.onPanelClosed(int, Menu)` for activities.
`void`	`onPerformDirectAction(String actionId, Bundle arguments, CancellationSignal cancellationSignal, Consumer<Bundle> resultListener)` This is called to perform an action previously defined by the app.
`void`	`onPictureInPictureModeChanged(boolean isInPictureInPictureMode, Configuration newConfig)` Called by the system when the activity changes to and from picture-in-picture mode.
`void`	`onPictureInPictureModeChanged(boolean isInPictureInPictureMode)` This method was deprecated in API level 26. Use `onPictureInPictureModeChanged(boolean, android.content.res.Configuration)` instead.
`boolean`	`onPictureInPictureRequested()` This method is called by the system in various cases where picture in picture mode should be entered if supported.
`void`	`onPictureInPictureUiStateChanged(PictureInPictureUiState pipState)` Called by the system when the activity is in PiP and has state changes.
`void`	`onPostCreate(Bundle savedInstanceState, PersistableBundle persistentState)` This is the same as `onPostCreate(android.os.Bundle)` but is called for activities created with the attribute `R.attr.persistableMode` set to `persistAcrossReboots`.
`void`	`onPrepareNavigateUpTaskStack(TaskStackBuilder builder)` Prepare the synthetic task stack that will be generated during Up navigation from a different task.
`boolean`	`onPrepareOptionsMenu(Menu menu)` Prepare the Screen's standard options menu to be displayed.
`boolean`	`onPreparePanel(int featureId, View view, Menu menu)` Default implementation of `Window.Callback.onPreparePanel(int, View, Menu)` for activities.
`void`	`onProvideAssistContent(AssistContent outContent)` This is called when the user is requesting an assist, to provide references to content related to the current activity.
`void`	`onProvideAssistData(Bundle data)` This is called when the user is requesting an assist, to build a full `Intent#ACTION_ASSIST` Intent with all of the context of the current application.
`void`	`onProvideKeyboardShortcuts(List<KeyboardShortcutGroup> data, Menu menu, int deviceId)` Called when Keyboard Shortcuts are requested for the current window.
`Uri`	`onProvideReferrer()` Override to generate the desired referrer for the content currently being shown by the app.
`void`	`onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults)` Callback for the result from requesting permissions.
`void`	`onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults, int deviceId)` Callback for the result from requesting permissions.
`void`	`onRestoreInstanceState(Bundle savedInstanceState, PersistableBundle persistentState)` This is the same as `onRestoreInstanceState(android.os.Bundle)` but is called for activities created with the attribute `R.attr.persistableMode` set to `persistAcrossReboots`.
`Object`	`onRetainNonConfigurationInstance()` Called by the system, as part of destroying an activity due to a configuration change, when it is known that a new instance will immediately be created for the new configuration.
`void`	`onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState)` This is the same as `onSaveInstanceState(Bundle)` but is called for activities created with the attribute `R.attr.persistableMode` set to `persistAcrossReboots`.
`boolean`	`onSearchRequested(SearchEvent searchEvent)` This hook is called when the user signals the desire to start a search.
`boolean`	`onSearchRequested()` Called when the user signals the desire to start a search.
`void`	`onStateNotSaved()` This method was deprecated in API level 29. starting with `Build.VERSION_CODES.P` onSaveInstanceState is called after `onStop()`, so this hint isn't accurate anymore: you should consider your state not saved in between `onStart` and `onStop` callbacks inclusively.
`void`	`onTopResumedActivityChanged(boolean isTopResumedActivity)` Called when activity gets or loses the top resumed position in the system.
`boolean`	`onTouchEvent(MotionEvent event)` Called when a touch screen event was not handled by any of the views inside of the activity.
`boolean`	`onTrackballEvent(MotionEvent event)` Called when the trackball was moved and not handled by any of the views inside of the activity.
`void`	`onTrimMemory(int level)` Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process.
`void`	`onUserInteraction()` Called whenever a key, touch, or trackball event is dispatched to the activity.
`void`	`onVisibleBehindCanceled()` This method was deprecated in API level 26. This method's functionality is no longer supported as of `Build.VERSION_CODES.O` and will be removed in a future release.
`void`	`onWindowAttributesChanged(WindowManager.LayoutParams params)` This is called whenever the current window attributes change.
`void`	`onWindowFocusChanged(boolean hasFocus)` Called when the current `Window` of the activity gains or loses focus.
`ActionMode`	`onWindowStartingActionMode(ActionMode.Callback callback, int type)` Called when an action mode is being started for this window.
`ActionMode`	`onWindowStartingActionMode(ActionMode.Callback callback)` Give the Activity a chance to control the UI for an action mode requested by the system.
`void`	`openContextMenu(View view)` Programmatically opens the context menu for a particular `view`.
`void`	`openOptionsMenu()` Programmatically opens the options menu.
`void`	`overrideActivityTransition(int overrideType, int enterAnim, int exitAnim, int backgroundColor)` Customizes the animation for the activity transition with this activity.
`void`	`overrideActivityTransition(int overrideType, int enterAnim, int exitAnim)` Customizes the animation for the activity transition with this activity.
`void`	`overridePendingTransition(int enterAnim, int exitAnim)` This method was deprecated in API level 34. Use `overrideActivityTransition(int, int, int)`} instead.
`void`	`overridePendingTransition(int enterAnim, int exitAnim, int backgroundColor)` This method was deprecated in API level 34. Use `overrideActivityTransition(int, int, int, int)`} instead.
`void`	`postponeEnterTransition()` Postpone the entering activity transition when Activity was started with `ActivityOptions.makeSceneTransitionAnimation(Activity, android.util.Pair[])`.
`void`	`recreate()` Cause this Activity to be recreated with a new instance.
`void`	`registerActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks callback)` Register an `Application.ActivityLifecycleCallbacks` instance that receives lifecycle callbacks for only this Activity.
`void`	`registerComponentCallbacks(ComponentCallbacks callback)` Add a new `ComponentCallbacks` to the base application of the Context, which will be called at the same times as the ComponentCallbacks methods of activities and other components are called.
`void`	`registerForContextMenu(View view)` Registers a context menu to be shown for the given view (multiple views can show the context menu).
`void`	`registerScreenCaptureCallback(Executor executor, Activity.ScreenCaptureCallback callback)` Registers a screen capture callback for this activity.
`boolean`	`releaseInstance()` Ask that the local app instance of this activity be released to free up its memory.
`final void`	`removeDialog(int id)` This method was deprecated in API level 15. Use the new `DialogFragment` class with `FragmentManager` instead; this is also available on older platforms through the Android compatibility package.
`void`	`reportFullyDrawn()` Report to the system that your app is now fully drawn, for diagnostic and optimization purposes.
`DragAndDropPermissions`	`requestDragAndDropPermissions(DragEvent event)` Create `DragAndDropPermissions` object bound to this activity and controlling the access permissions for content URIs associated with the `DragEvent`.
`void`	`requestFullscreenMode(int request, OutcomeReceiver<Void, Throwable> approvalCallback)` Request to put the activity into fullscreen.
`final void`	`requestPermissions(String[] permissions, int requestCode, int deviceId)` Requests permissions to be granted to this application.
`final void`	`requestPermissions(String[] permissions, int requestCode)` Requests permissions to be granted to this application.
`final void`	`requestShowKeyboardShortcuts()` Request the Keyboard Shortcuts screen to show up.
`boolean`	`requestVisibleBehind(boolean visible)` This method was deprecated in API level 26. This method's functionality is no longer supported as of `Build.VERSION_CODES.O` and will be removed in a future release.
`final boolean`	`requestWindowFeature(int featureId)` Enable extended window features.
`final <T extends View> T`	`requireViewById(int id)` Finds a view that was identified by the `android:id` XML attribute that was processed in `onCreate(Bundle)`, or throws an IllegalArgumentException if the ID is invalid, or there is no matching view in the hierarchy.
`final void`	`runOnUiThread(Runnable action)` Runs the specified action on the UI thread.
`void`	`setActionBar(Toolbar toolbar)` Set a `Toolbar` to act as the `ActionBar` for this Activity window.
`void`	`setAllowCrossUidActivitySwitchFromBelow(boolean allowed)` Specifies whether the activities below this one in the task can also start other activities or finish the task.
`void`	`setContentTransitionManager(TransitionManager tm)` Set the `TransitionManager` to use for default transitions in this window.
`void`	`setContentView(View view, ViewGroup.LayoutParams params)` Set the activity content to an explicit view.
`void`	`setContentView(View view)` Set the activity content to an explicit view.
`void`	`setContentView(int layoutResID)` Set the activity content from a layout resource.
`final void`	`setDefaultKeyMode(int mode)` Select the default key handling for this activity.
`void`	`setEnterSharedElementCallback(SharedElementCallback callback)` When `ActivityOptions.makeSceneTransitionAnimation(Activity, android.view.View, String)` was used to start an Activity, `callback` will be called to handle shared elements on the launched Activity.
`void`	`setExitSharedElementCallback(SharedElementCallback callback)` When `ActivityOptions.makeSceneTransitionAnimation(Activity, android.view.View, String)` was used to start an Activity, `callback` will be called to handle shared elements on the launching Activity.
`final void`	`setFeatureDrawable(int featureId, Drawable drawable)` Convenience for calling `Window.setFeatureDrawable(int, Drawable)`.
`final void`	`setFeatureDrawableAlpha(int featureId, int alpha)` Convenience for calling `Window.setFeatureDrawableAlpha(int, int)`.
`final void`	`setFeatureDrawableResource(int featureId, int resId)` Convenience for calling `Window.setFeatureDrawableResource(int, int)`.
`final void`	`setFeatureDrawableUri(int featureId, Uri uri)` Convenience for calling `Window.setFeatureDrawableUri(int, Uri)`.
`void`	`setFinishOnTouchOutside(boolean finish)` Sets whether this activity is finished when touched outside its window's bounds.
`void`	`setImmersive(boolean i)` Adjust the current immersive mode setting.
`void`	`setInheritShowWhenLocked(boolean inheritShowWhenLocked)` Specifies whether this `Activity` should be shown on top of the lock screen whenever the lockscreen is up and this activity has another activity behind it with the showWhenLock attribute set.
`void`	`setIntent(Intent newIntent)` Changes the intent returned by `getIntent()`.
`void`	`setIntent(Intent newIntent, ComponentCaller newCaller)` Changes the intent returned by `getIntent()`, and ComponentCaller returned by `getCaller()`.
`void`	`setLocusContext(LocusId locusId, Bundle bundle)` Sets the `LocusId` for this activity.
`final void`	`setMediaController(MediaController controller)` Sets a `MediaController` to send media keys and volume changes to.
`void`	`setPictureInPictureParams(PictureInPictureParams params)` Updates the properties of the picture-in-picture activity, or sets it to be used later when `enterPictureInPictureMode()` is called.
`final void`	`setProgress(int progress)` This method was deprecated in API level 24. No longer supported starting in API 21.
`final void`	`setProgressBarIndeterminate(boolean indeterminate)` This method was deprecated in API level 24. No longer supported starting in API 21.
`final void`	`setProgressBarIndeterminateVisibility(boolean visible)` This method was deprecated in API level 24. No longer supported starting in API 21.
`final void`	`setProgressBarVisibility(boolean visible)` This method was deprecated in API level 24. No longer supported starting in API 21.
`void`	`setRecentsScreenshotEnabled(boolean enabled)` If set to false, this indicates to the system that it should never take a screenshot of the activity to be used as a representation in recents screen.
`void`	`setRequestedOrientation(int requestedOrientation)` Change the desired orientation of this activity.
`final void`	`setResult(int resultCode, Intent data)` Call this to set the result that your activity will return to its caller.
`final void`	`setResult(int resultCode)` Call this to set the result that your activity will return to its caller.
`final void`	`setSecondaryProgress(int secondaryProgress)` This method was deprecated in API level 24. No longer supported starting in API 21.
`void`	`setShouldDockBigOverlays(boolean shouldDockBigOverlays)` Specifies a preference to dock big overlays like the expanded picture-in-picture on TV (see `PictureInPictureParams.Builder#setExpandedAspectRatio`).
`void`	`setShowWhenLocked(boolean showWhenLocked)` Specifies whether an `Activity` should be shown on top of the lock screen whenever the lockscreen is up and the activity is resumed.
`void`	`setTaskDescription(ActivityManager.TaskDescription taskDescription)` Sets information describing the task with this activity for presentation inside the Recents System UI.
`void`	`setTheme(int resid)` Set the base theme for this context.
`void`	`setTitle(CharSequence title)` Change the title associated with this activity.
`void`	`setTitle(int titleId)` Change the title associated with this activity.
`void`	`setTitleColor(int textColor)` This method was deprecated in API level 21. Use action bar styles instead.
`boolean`	`setTranslucent(boolean translucent)` Convert an activity, which particularly with `R.attr.windowIsTranslucent` or `R.attr.windowIsFloating` attribute, to a fullscreen opaque activity, or convert it from opaque back to translucent.
`void`	`setTurnScreenOn(boolean turnScreenOn)` Specifies whether the screen should be turned on when the `Activity` is resumed.
`void`	`setVisible(boolean visible)` Control whether this activity's main window is visible.
`final void`	`setVolumeControlStream(int streamType)` Suggests an audio stream whose volume should be changed by the hardware volume controls.
`void`	`setVrModeEnabled(boolean enabled, ComponentName requestedComponent)` Enable or disable virtual reality (VR) mode for this Activity.
`boolean`	`shouldDockBigOverlays()` Returns whether big overlays should be docked next to the activity as set by `setShouldDockBigOverlays(boolean)`.
`boolean`	`shouldShowRequestPermissionRationale(String permission)` Gets whether you should show UI with rationale before requesting a permission.
`boolean`	`shouldShowRequestPermissionRationale(String permission, int deviceId)` Gets whether you should show UI with rationale before requesting a permission.
`boolean`	`shouldUpRecreateTask(Intent targetIntent)` Returns true if the app should recreate the task when navigating 'up' from this activity by using targetIntent.
`boolean`	`showAssist(Bundle args)` Ask to have the current assistant shown to the user.
`final boolean`	`showDialog(int id, Bundle args)` This method was deprecated in API level 15. Use the new `DialogFragment` class with `FragmentManager` instead; this is also available on older platforms through the Android compatibility package.
`final void`	`showDialog(int id)` This method was deprecated in API level 15. Use the new `DialogFragment` class with `FragmentManager` instead; this is also available on older platforms through the Android compatibility package.
`void`	`showLockTaskEscapeMessage()` Shows the user the system defined message for telling the user how to exit lock task mode.
`ActionMode`	`startActionMode(ActionMode.Callback callback, int type)` Start an action mode of the given type.
`ActionMode`	`startActionMode(ActionMode.Callback callback)` Start an action mode of the default type `ActionMode#TYPE_PRIMARY`.
`void`	`startActivities(Intent[] intents, Bundle options)` Launch a new activity.
`void`	`startActivities(Intent[] intents)` Same as `startActivities(android.content.Intent[], android.os.Bundle)` with no options specified.
`void`	`startActivity(Intent intent)` Same as `startActivity(android.content.Intent, android.os.Bundle)` with no options specified.
`void`	`startActivity(Intent intent, Bundle options)` Launch a new activity.
`void`	`startActivityForResult(Intent intent, int requestCode)` Same as calling `startActivityForResult(android.content.Intent, int, android.os.Bundle)` with no options.
`void`	`startActivityForResult(Intent intent, int requestCode, Bundle options)` Launch an activity for which you would like a result when it finished.
`void`	`startActivityFromChild(Activity child, Intent intent, int requestCode)` This method was deprecated in API level 30. Use `androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int)`
`void`	`startActivityFromChild(Activity child, Intent intent, int requestCode, Bundle options)` This method was deprecated in API level 30. Use `androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int,Bundle)`
`void`	`startActivityFromFragment(Fragment fragment, Intent intent, int requestCode, Bundle options)` This method was deprecated in API level 28. Use `androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int,Bundle)`
`void`	`startActivityFromFragment(Fragment fragment, Intent intent, int requestCode)` This method was deprecated in API level 28. Use `androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int)`
`boolean`	`startActivityIfNeeded(Intent intent, int requestCode, Bundle options)` A special variation to launch an activity only if a new activity instance is needed to handle the given Intent.
`boolean`	`startActivityIfNeeded(Intent intent, int requestCode)` Same as calling `startActivityIfNeeded(android.content.Intent, int, android.os.Bundle)` with no options.
`void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)` Same as calling `startIntentSender(android.content.IntentSender, android.content.Intent, int, int, int, android.os.Bundle)` with no options.
`void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Like `startActivity(android.content.Intent, android.os.Bundle)`, but taking a IntentSender to start; see `startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle)` for more information.
`void`	`startIntentSenderForResult(IntentSender intent, int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)` Same as calling `startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle)` with no options.
`void`	`startIntentSenderForResult(IntentSender intent, int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Like `startActivityForResult(android.content.Intent, int)`, but allowing you to use a IntentSender to describe the activity to be started.
`void`	`startIntentSenderFromChild(Activity child, IntentSender intent, int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` This method was deprecated in API level 30. Use `startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle)` instead.
`void`	`startIntentSenderFromChild(Activity child, IntentSender intent, int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)` This method was deprecated in API level 30. Use `startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int)` instead.
`void`	`startLocalVoiceInteraction(Bundle privateOptions)` Starts a local voice interaction session.
`void`	`startLockTask()` Request to put this activity in a mode where the user is locked to a restricted set of applications.
`void`	`startManagingCursor(Cursor c)` This method was deprecated in API level 15. Use the new `CursorLoader` class with `LoaderManager` instead; this is also available on older platforms through the Android compatibility package.
`boolean`	`startNextMatchingActivity(Intent intent, Bundle options)` Special version of starting an activity, for use when you are replacing other activity components.
`boolean`	`startNextMatchingActivity(Intent intent)` Same as calling `startNextMatchingActivity(android.content.Intent, android.os.Bundle)` with no options.
`void`	`startPostponedEnterTransition()` Begin postponed transitions after `postponeEnterTransition()` was called.
`void`	`startSearch(String initialQuery, boolean selectInitialQuery, Bundle appSearchData, boolean globalSearch)` This hook is called to launch the search UI.
`void`	`stopLocalVoiceInteraction()` Request to terminate the current voice interaction that was previously started using `startLocalVoiceInteraction(android.os.Bundle)`.
`void`	`stopLockTask()` Stop the current task from being locked.
`void`	`stopManagingCursor(Cursor c)` This method was deprecated in API level 15. Use the new `CursorLoader` class with `LoaderManager` instead; this is also available on older platforms through the Android compatibility package.
`void`	`takeKeyEvents(boolean get)` Request that key events come to this activity.
`void`	`triggerSearch(String query, Bundle appSearchData)` Similar to `startSearch(String, boolean, Bundle, boolean)`, but actually fires off the search query after invoking the search dialog.
`void`	`unregisterActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks callback)` Unregister an `Application.ActivityLifecycleCallbacks` previously registered with `registerActivityLifecycleCallbacks(ActivityLifecycleCallbacks)`.
`void`	`unregisterComponentCallbacks(ComponentCallbacks callback)` Remove a `ComponentCallbacks` object that was previously registered with `registerComponentCallbacks(android.content.ComponentCallbacks)`.
`void`	`unregisterForContextMenu(View view)` Prevents a context menu to be shown for the given view.
`void`	`unregisterScreenCaptureCallback(Activity.ScreenCaptureCallback callback)` Unregisters a screen capture callback for this surface.

Protected methods
`void`	`attachBaseContext(Context newBase)` Set the base context for this ContextWrapper.
`void`	`onActivityResult(int requestCode, int resultCode, Intent data)` Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it.
`void`	`onApplyThemeResource(Resources.Theme theme, int resid, boolean first)` Called by `setTheme(Theme)` and `getTheme()` to apply a theme resource to the current Theme object.
`void`	`onChildTitleChanged(Activity childActivity, CharSequence title)`
`void`	`onCreate(Bundle savedInstanceState)` Called when the activity is starting.
`Dialog`	`onCreateDialog(int id)` This method was deprecated in API level 15. Old no-arguments version of `onCreateDialog(int, android.os.Bundle)`.
`Dialog`	`onCreateDialog(int id, Bundle args)` This method was deprecated in API level 15. Use the new `DialogFragment` class with `FragmentManager` instead; this is also available on older platforms through the Android compatibility package.
`void`	`onDestroy()` Perform any final cleanup before an activity is destroyed.
`void`	`onNewIntent(Intent intent)` This is called for activities that set launchMode to "singleTop" in their package, or if a client used the `Intent#FLAG_ACTIVITY_SINGLE_TOP` flag when calling `startActivity(Intent)`.
`void`	`onPause()` Called as part of the activity lifecycle when the user no longer actively interacts with the activity, but it is still visible on screen.
`void`	`onPostCreate(Bundle savedInstanceState)` Called when activity start-up is complete (after `onStart()` and `onRestoreInstanceState(Bundle)` have been called).
`void`	`onPostResume()` Called when activity resume is complete (after `onResume()` has been called).
`void`	`onPrepareDialog(int id, Dialog dialog, Bundle args)` This method was deprecated in API level 15. Use the new `DialogFragment` class with `FragmentManager` instead; this is also available on older platforms through the Android compatibility package.
`void`	`onPrepareDialog(int id, Dialog dialog)` This method was deprecated in API level 15. Old no-arguments version of `onPrepareDialog(int, android.app.Dialog, android.os.Bundle)`.
`void`	`onRestart()` Called after `onStop()` when the current activity is being re-displayed to the user (the user has navigated back to it).
`void`	`onRestoreInstanceState(Bundle savedInstanceState)` This method is called after `onStart()` when the activity is being re-initialized from a previously saved state, given here in `savedInstanceState`.
`void`	`onResume()` Called after `onRestoreInstanceState(Bundle)`, `onRestart()`, or `onPause()`.
`void`	`onSaveInstanceState(Bundle outState)` Called to retrieve per-instance state from an activity before being killed so that the state can be restored in `onCreate(Bundle)` or `onRestoreInstanceState(Bundle)` (the `Bundle` populated by this method will be passed to both).
`void`	`onStart()` Called after `onCreate(Bundle)` — or after `onRestart()` when the activity had been stopped, but is now again being displayed to the user.
`void`	`onStop()` Called when you are no longer visible to the user.
`void`	`onTitleChanged(CharSequence title, int color)`
`void`	`onUserLeaveHint()` Called as part of the activity lifecycle when an activity is about to go into the background as the result of user choice.

Inherited methods

From class


        
          android.view.ContextThemeWrapper

`void`	`applyOverrideConfiguration(Configuration overrideConfiguration)` Call to set an "override configuration" on this context -- this is a configuration that replies one or more values of the standard configuration that is applied to the context.
`void`	`attachBaseContext(Context newBase)` Set the base context for this ContextWrapper.
`AssetManager`	`getAssets()` Returns an AssetManager instance for the application's package.
`Resources`	`getResources()` Returns a Resources instance for the application's package.
`Object`	`getSystemService(String name)` Return the handle to a system-level service by name.
`Resources.Theme`	`getTheme()` Return the Theme object associated with this Context.
`void`	`onApplyThemeResource(Resources.Theme theme, int resId, boolean first)` Called by `setTheme(Theme)` and `getTheme()` to apply a theme resource to the current Theme object.
`void`	`setTheme(Resources.Theme theme)` Set the configure the current theme.
`void`	`setTheme(int resid)` Set the base theme for this context.

From class


        
          android.content.ContextWrapper

`void`	`attachBaseContext(Context base)` Set the base context for this ContextWrapper.
`boolean`	`bindIsolatedService(Intent service, int flags, String instanceName, Executor executor, ServiceConnection conn)` Variation of `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)` that, in the specific case of isolated services, allows the caller to generate multiple instances of a service from a single component declaration.
`boolean`	`bindService(Intent service, int flags, Executor executor, ServiceConnection conn)` Same as `bindService(Intent, ServiceConnection, int)` with executor to control ServiceConnection callbacks.
`boolean`	`bindService(Intent service, ServiceConnection conn, Context.BindServiceFlags flags)` See `bindService(android.content.Intent, android.content.ServiceConnection, int)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`boolean`	`bindService(Intent service, ServiceConnection conn, int flags)` Connects to an application service, creating it if needed.
`boolean`	`bindService(Intent service, Context.BindServiceFlags flags, Executor executor, ServiceConnection conn)` See `bindService(android.content.Intent, int, java.util.concurrent.Executor, android.content.ServiceConnection)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`int`	`checkCallingOrSelfPermission(String permission)` Determine whether the calling process of an IPC or you have been granted a particular permission.
`int`	`checkCallingOrSelfUriPermission(Uri uri, int modeFlags)` Determine whether the calling process of an IPC or you has been granted permission to access a specific URI.
`int[]`	`checkCallingOrSelfUriPermissions(List<Uri> uris, int modeFlags)` Determine whether the calling process of an IPC or you has been granted permission to access a list of URIs.
`int`	`checkCallingPermission(String permission)` Determine whether the calling process of an IPC you are handling has been granted a particular permission.
`int`	`checkCallingUriPermission(Uri uri, int modeFlags)` Determine whether the calling process and uid has been granted permission to access a specific URI.
`int[]`	`checkCallingUriPermissions(List<Uri> uris, int modeFlags)` Determine whether the calling process and uid has been granted permission to access a list of URIs.
`int`	`checkContentUriPermissionFull(Uri uri, int pid, int uid, int modeFlags)` Determine whether a particular process and uid has been granted permission to access a specific content URI.
`int`	`checkPermission(String permission, int pid, int uid)` Determine whether the given permission is allowed for a particular process and user ID running in the system.
`int`	`checkSelfPermission(String permission)` Determine whether you have been granted a particular permission.
`int`	`checkUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags)` Check both a Uri and normal permission.
`int`	`checkUriPermission(Uri uri, int pid, int uid, int modeFlags)` Determine whether a particular process and uid has been granted permission to access a specific URI.
`int[]`	`checkUriPermissions(List<Uri> uris, int pid, int uid, int modeFlags)` Determine whether a particular process and uid has been granted permission to access a list of URIs.
`void`	`clearWallpaper()` This method is deprecated. Use `WallpaperManager.clear()` instead. This method requires the caller to hold the permission `Manifest.permission.SET_WALLPAPER`.
`Context`	`createAttributionContext(String attributionTag)` Return a new Context object for the current Context but attribute to a different tag.
`Context`	`createConfigurationContext(Configuration overrideConfiguration)` Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration.
`Context`	`createContext(ContextParams contextParams)` Creates a context with specific properties and behaviors.
`Context`	`createDeviceContext(int deviceId)` Returns a new `Context` object from the current context but with device association given by the `deviceId`.
`Context`	`createDeviceProtectedStorageContext()` Return a new Context object for the current Context but whose storage APIs are backed by device-protected storage.
`Context`	`createDisplayContext(Display display)` Returns a new `Context` object from the current context but with resources adjusted to match the metrics of `display`.
`Context`	`createPackageContext(String packageName, int flags)` Return a new Context object for the given application name.
`Context`	`createWindowContext(int type, Bundle options)` Creates a Context for a non-activity window.
`Context`	`createWindowContext(Display display, int type, Bundle options)` Creates a `Context` for a non-`activity` window on the given `Display`.
`String[]`	`databaseList()` Returns an array of strings naming the private databases associated with this Context's application package.
`boolean`	`deleteDatabase(String name)` Delete an existing private SQLiteDatabase associated with this Context's application package.
`boolean`	`deleteFile(String name)` Delete the given private file associated with this Context's application package.
`boolean`	`deleteSharedPreferences(String name)` Delete an existing shared preferences file.
`void`	`enforceCallingOrSelfPermission(String permission, String message)` If neither you nor the calling process of an IPC you are handling has been granted a particular permission, throw a `SecurityException`.
`void`	`enforceCallingOrSelfUriPermission(Uri uri, int modeFlags, String message)` If the calling process of an IPC or you has not been granted permission to access a specific URI, throw `SecurityException`.
`void`	`enforceCallingPermission(String permission, String message)` If the calling process of an IPC you are handling has not been granted a particular permission, throw a `SecurityException`.
`void`	`enforceCallingUriPermission(Uri uri, int modeFlags, String message)` If the calling process and uid has not been granted permission to access a specific URI, throw `SecurityException`.
`void`	`enforcePermission(String permission, int pid, int uid, String message)` If the given permission is not allowed for a particular process and user ID running in the system, throw a `SecurityException`.
`void`	`enforceUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags, String message)` Enforce both a Uri and normal permission.
`void`	`enforceUriPermission(Uri uri, int pid, int uid, int modeFlags, String message)` If a particular process and uid has not been granted permission to access a specific URI, throw `SecurityException`.
`String[]`	`fileList()` Returns an array of strings naming the private files associated with this Context's application package.
`Context`	`getApplicationContext()` Return the context of the single, global Application object of the current process.
`ApplicationInfo`	`getApplicationInfo()` Return the full application info for this context's package.
`AssetManager`	`getAssets()` Returns an AssetManager instance for the application's package.
`AttributionSource`	`getAttributionSource()`
`Context`	`getBaseContext()`
`File`	`getCacheDir()` Returns the absolute path to the application specific cache directory on the filesystem.
`ClassLoader`	`getClassLoader()` Return a class loader you can use to retrieve classes in this package.
`File`	`getCodeCacheDir()` Returns the absolute path to the application specific cache directory on the filesystem designed for storing cached code.
`ContentResolver`	`getContentResolver()` Return a ContentResolver instance for your application's package.
`File`	`getDataDir()` Returns the absolute path to the directory on the filesystem where all private files belonging to this app are stored.
`File`	`getDatabasePath(String name)` Returns the absolute path on the filesystem where a database created with `openOrCreateDatabase(String, int, CursorFactory)` is stored.
`int`	`getDeviceId()` Gets the device ID this context is associated with.
`File`	`getDir(String name, int mode)` Retrieve, creating if needed, a new directory in which the application can place its own custom data files.
`Display`	`getDisplay()` Get the display this context is associated with.
`File`	`getExternalCacheDir()` Returns absolute path to application-specific directory on the primary shared/external storage device where the application can place cache files it owns.
`File[]`	`getExternalCacheDirs()` Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place cache files it owns.
`File`	`getExternalFilesDir(String type)` Returns the absolute path to the directory on the primary shared/external storage device where the application can place persistent files it owns.
`File[]`	`getExternalFilesDirs(String type)` Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place persistent files it owns.
`File[]`	`getExternalMediaDirs()` This method is deprecated. These directories still exist and are scanned, but developers are encouraged to migrate to inserting content into a `MediaStore` collection directly, as any app can contribute new media to `MediaStore` with no permissions required, starting in `Build.VERSION_CODES.Q`.
`File`	`getFileStreamPath(String name)` Returns the absolute path on the filesystem where a file created with `openFileOutput(String, int)` is stored.
`File`	`getFilesDir()` Returns the absolute path to the directory on the filesystem where files created with `openFileOutput(String, int)` are stored.
`Executor`	`getMainExecutor()` Return an `Executor` that will run enqueued tasks on the main thread associated with this context.
`Looper`	`getMainLooper()` Return the Looper for the main thread of the current process.
`File`	`getNoBackupFilesDir()` Returns the absolute path to the directory on the filesystem similar to `getFilesDir()`.
`File`	`getObbDir()` Return the primary shared/external storage directory where this application's OBB files (if there are any) can be found.
`File[]`	`getObbDirs()` Returns absolute paths to application-specific directories on all shared/external storage devices where the application's OBB files (if there are any) can be found.
`String`	`getPackageCodePath()` Return the full path to this context's primary Android package.
`PackageManager`	`getPackageManager()` Return PackageManager instance to find global package information.
`String`	`getPackageName()` Return the name of this application's package.
`String`	`getPackageResourcePath()` Return the full path to this context's primary Android package.
`ContextParams`	`getParams()` Return the set of parameters which this Context was created with, if it was created via `createContext(android.content.ContextParams)`.
`Resources`	`getResources()` Returns a Resources instance for the application's package.
`SharedPreferences`	`getSharedPreferences(String name, int mode)` Retrieve and hold the contents of the preferences file 'name', returning a SharedPreferences through which you can retrieve and modify its values.
`Object`	`getSystemService(String name)` Return the handle to a system-level service by name.
`String`	`getSystemServiceName(Class<?> serviceClass)` Gets the name of the system-level service that is represented by the specified class.
`Resources.Theme`	`getTheme()` Return the Theme object associated with this Context.
`Drawable`	`getWallpaper()` This method is deprecated. Use `WallpaperManager.get()` instead.
`int`	`getWallpaperDesiredMinimumHeight()` This method is deprecated. Use `WallpaperManager.getDesiredMinimumHeight()` instead.
`int`	`getWallpaperDesiredMinimumWidth()` This method is deprecated. Use `WallpaperManager.getDesiredMinimumWidth()` instead.
`void`	`grantUriPermission(String toPackage, Uri uri, int modeFlags)` Grant permission to access a specific Uri to another package, regardless of whether that package has general permission to access the Uri's content provider.
`boolean`	`isDeviceProtectedStorage()` Indicates if the storage APIs of this Context are backed by device-protected storage.
`boolean`	`isRestricted()` Indicates whether this Context is restricted.
`boolean`	`moveDatabaseFrom(Context sourceContext, String name)` Move an existing database file from the given source storage context to this context.
`boolean`	`moveSharedPreferencesFrom(Context sourceContext, String name)` Move an existing shared preferences file from the given source storage context to this context.
`FileInputStream`	`openFileInput(String name)` Open a private file associated with this Context's application package for reading.
`FileOutputStream`	`openFileOutput(String name, int mode)` Open a private file associated with this Context's application package for writing.
`SQLiteDatabase`	`openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory, DatabaseErrorHandler errorHandler)` Open a new private SQLiteDatabase associated with this Context's application package.
`SQLiteDatabase`	`openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory)` Open a new private SQLiteDatabase associated with this Context's application package.
`Drawable`	`peekWallpaper()` This method is deprecated. Use `WallpaperManager.peek()` instead.
`void`	`registerComponentCallbacks(ComponentCallbacks callback)` Add a new `ComponentCallbacks` to the base application of the Context, which will be called at the same times as the ComponentCallbacks methods of activities and other components are called.
`void`	`registerDeviceIdChangeListener(Executor executor, IntConsumer listener)` Adds a new device ID changed listener to the `Context`, which will be called when the device association is changed by the system.
`Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter)` Register a BroadcastReceiver to be run in the main activity thread.
`Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter, int flags)` Register to receive intent broadcasts, with the receiver optionally being exposed to Instant Apps.
`Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler, int flags)` Register to receive intent broadcasts, to run in the context of `scheduler`.
`Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler)` Register to receive intent broadcasts, to run in the context of `scheduler`.
`void`	`removeStickyBroadcast(Intent intent)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`removeStickyBroadcastAsUser(Intent intent, UserHandle user)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`revokeSelfPermissionsOnKill(Collection<String> permissions)` Triggers the revocation of one or more permissions for the calling package.
`void`	`revokeUriPermission(Uri uri, int modeFlags)` Remove all permissions to access a particular content provider Uri that were previously added with `grantUriPermission(String, Uri, int)` or any other mechanism.
`void`	`revokeUriPermission(String targetPackage, Uri uri, int modeFlags)` Remove permissions to access a particular content provider Uri that were previously added with `grantUriPermission(String, Uri, int)` for a specific target package.
`void`	`sendBroadcast(Intent intent, String receiverPermission, Bundle options)` Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.
`void`	`sendBroadcast(Intent intent, String receiverPermission)` Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.
`void`	`sendBroadcast(Intent intent)` Broadcast the given intent to all interested BroadcastReceivers.
`void`	`sendBroadcastAsUser(Intent intent, UserHandle user)` Version of `sendBroadcast(android.content.Intent)` that allows you to specify the user the broadcast will be sent to.
`void`	`sendBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission)` Version of `sendBroadcast(android.content.Intent, java.lang.String)` that allows you to specify the user the broadcast will be sent to.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle)` that allows you to specify the App Op to enforce restrictions on which receivers the broadcast will be sent to.
`void`	`sendOrderedBroadcast(Intent intent, int initialCode, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, String initialData, Bundle initialExtras, Bundle options)`
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendBroadcast(android.content.Intent)` that allows you to receive data back from the broadcast.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options)` Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendBroadcast(android.content.Intent)` that allows you to receive data back from the broadcast.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission)` Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers.
`void`	`sendOrderedBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle)` that allows you to specify the user the broadcast will be sent to.
`void`	`sendStickyBroadcast(Intent intent)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`sendStickyBroadcast(Intent intent, Bundle options)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`sendStickyBroadcastAsUser(Intent intent, UserHandle user)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`sendStickyOrderedBroadcast(Intent intent, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`sendStickyOrderedBroadcastAsUser(Intent intent, UserHandle user, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`setTheme(int resid)` Set the base theme for this context.
`void`	`setWallpaper(Bitmap bitmap)` This method is deprecated. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `Manifest.permission.SET_WALLPAPER`.
`void`	`setWallpaper(InputStream data)` This method is deprecated. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `Manifest.permission.SET_WALLPAPER`.
`void`	`startActivities(Intent[] intents, Bundle options)` Launch multiple new activities.
`void`	`startActivities(Intent[] intents)` Same as `startActivities(android.content.Intent[], android.os.Bundle)` with no options specified.
`void`	`startActivity(Intent intent)` Same as `startActivity(android.content.Intent, android.os.Bundle)` with no options specified.
`void`	`startActivity(Intent intent, Bundle options)` Launch a new activity.
`ComponentName`	`startForegroundService(Intent service)` Similar to `startService(android.content.Intent)`, but with an implicit promise that the Service will call `startForeground(int, android.app.Notification)` once it begins running.
`boolean`	`startInstrumentation(ComponentName className, String profileFile, Bundle arguments)` Start executing an `Instrumentation` class.
`void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)` Same as `startIntentSender(android.content.IntentSender, android.content.Intent, int, int, int, android.os.Bundle)` with no options specified.
`void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Like `startActivity(android.content.Intent, android.os.Bundle)`, but taking a IntentSender to start.
`ComponentName`	`startService(Intent service)` Request that a given application service be started.
`boolean`	`stopService(Intent name)` Request that a given application service be stopped.
`void`	`unbindService(ServiceConnection conn)` Disconnect from an application service.
`void`	`unregisterComponentCallbacks(ComponentCallbacks callback)` Remove a `ComponentCallbacks` object that was previously registered with `registerComponentCallbacks(android.content.ComponentCallbacks)`.
`void`	`unregisterDeviceIdChangeListener(IntConsumer listener)` Removes a device ID changed listener from the Context.
`void`	`unregisterReceiver(BroadcastReceiver receiver)` Unregister a previously registered BroadcastReceiver.
`void`	`updateServiceGroup(ServiceConnection conn, int group, int importance)` For a service previously bound with `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)` or a related method, change how the system manages that service's process in relation to other processes.

From class


        
          android.content.Context

`boolean`	`bindIsolatedService(Intent service, int flags, String instanceName, Executor executor, ServiceConnection conn)` Variation of `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)` that, in the specific case of isolated services, allows the caller to generate multiple instances of a service from a single component declaration.
`boolean`	`bindIsolatedService(Intent service, Context.BindServiceFlags flags, String instanceName, Executor executor, ServiceConnection conn)` See `bindIsolatedService(android.content.Intent, int, java.lang.String, java.util.concurrent.Executor, android.content.ServiceConnection)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`boolean`	`bindService(Intent service, int flags, Executor executor, ServiceConnection conn)` Same as `bindService(Intent, ServiceConnection, int)` with executor to control ServiceConnection callbacks.
`boolean`	`bindService(Intent service, ServiceConnection conn, Context.BindServiceFlags flags)` See `bindService(android.content.Intent, android.content.ServiceConnection, int)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`abstract boolean`	`bindService(Intent service, ServiceConnection conn, int flags)` Connects to an application service, creating it if needed.
`boolean`	`bindService(Intent service, Context.BindServiceFlags flags, Executor executor, ServiceConnection conn)` See `bindService(android.content.Intent, int, java.util.concurrent.Executor, android.content.ServiceConnection)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`boolean`	`bindServiceAsUser(Intent service, ServiceConnection conn, int flags, UserHandle user)` Binds to a service in the given `user` in the same manner as `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)`.
`boolean`	`bindServiceAsUser(Intent service, ServiceConnection conn, Context.BindServiceFlags flags, UserHandle user)` See `bindServiceAsUser(android.content.Intent, android.content.ServiceConnection, int, android.os.UserHandle)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`abstract int`	`checkCallingOrSelfPermission(String permission)` Determine whether the calling process of an IPC or you have been granted a particular permission.
`abstract int`	`checkCallingOrSelfUriPermission(Uri uri, int modeFlags)` Determine whether the calling process of an IPC or you has been granted permission to access a specific URI.
`int[]`	`checkCallingOrSelfUriPermissions(List<Uri> uris, int modeFlags)` Determine whether the calling process of an IPC or you has been granted permission to access a list of URIs.
`abstract int`	`checkCallingPermission(String permission)` Determine whether the calling process of an IPC you are handling has been granted a particular permission.
`abstract int`	`checkCallingUriPermission(Uri uri, int modeFlags)` Determine whether the calling process and uid has been granted permission to access a specific URI.
`int[]`	`checkCallingUriPermissions(List<Uri> uris, int modeFlags)` Determine whether the calling process and uid has been granted permission to access a list of URIs.
`int`	`checkContentUriPermissionFull(Uri uri, int pid, int uid, int modeFlags)` Determine whether a particular process and uid has been granted permission to access a specific content URI.
`abstract int`	`checkPermission(String permission, int pid, int uid)` Determine whether the given permission is allowed for a particular process and user ID running in the system.
`abstract int`	`checkSelfPermission(String permission)` Determine whether you have been granted a particular permission.
`abstract int`	`checkUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags)` Check both a Uri and normal permission.
`abstract int`	`checkUriPermission(Uri uri, int pid, int uid, int modeFlags)` Determine whether a particular process and uid has been granted permission to access a specific URI.
`int[]`	`checkUriPermissions(List<Uri> uris, int pid, int uid, int modeFlags)` Determine whether a particular process and uid has been granted permission to access a list of URIs.
`abstract void`	`clearWallpaper()` This method was deprecated in API level 15. Use `WallpaperManager.clear()` instead. This method requires the caller to hold the permission `Manifest.permission.SET_WALLPAPER`.
`Context`	`createAttributionContext(String attributionTag)` Return a new Context object for the current Context but attribute to a different tag.
`abstract Context`	`createConfigurationContext(Configuration overrideConfiguration)` Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration.
`Context`	`createContext(ContextParams contextParams)` Creates a context with specific properties and behaviors.
`abstract Context`	`createContextForSplit(String splitName)` Return a new Context object for the given split name.
`Context`	`createDeviceContext(int deviceId)` Returns a new `Context` object from the current context but with device association given by the `deviceId`.
`abstract Context`	`createDeviceProtectedStorageContext()` Return a new Context object for the current Context but whose storage APIs are backed by device-protected storage.
`abstract Context`	`createDisplayContext(Display display)` Returns a new `Context` object from the current context but with resources adjusted to match the metrics of `display`.
`abstract Context`	`createPackageContext(String packageName, int flags)` Return a new Context object for the given application name.
`Context`	`createWindowContext(int type, Bundle options)` Creates a Context for a non-activity window.
`Context`	`createWindowContext(Display display, int type, Bundle options)` Creates a `Context` for a non-`activity` window on the given `Display`.
`abstract String[]`	`databaseList()` Returns an array of strings naming the private databases associated with this Context's application package.
`abstract boolean`	`deleteDatabase(String name)` Delete an existing private SQLiteDatabase associated with this Context's application package.
`abstract boolean`	`deleteFile(String name)` Delete the given private file associated with this Context's application package.
`abstract boolean`	`deleteSharedPreferences(String name)` Delete an existing shared preferences file.
`abstract void`	`enforceCallingOrSelfPermission(String permission, String message)` If neither you nor the calling process of an IPC you are handling has been granted a particular permission, throw a `SecurityException`.
`abstract void`	`enforceCallingOrSelfUriPermission(Uri uri, int modeFlags, String message)` If the calling process of an IPC or you has not been granted permission to access a specific URI, throw `SecurityException`.
`abstract void`	`enforceCallingPermission(String permission, String message)` If the calling process of an IPC you are handling has not been granted a particular permission, throw a `SecurityException`.
`abstract void`	`enforceCallingUriPermission(Uri uri, int modeFlags, String message)` If the calling process and uid has not been granted permission to access a specific URI, throw `SecurityException`.
`abstract void`	`enforcePermission(String permission, int pid, int uid, String message)` If the given permission is not allowed for a particular process and user ID running in the system, throw a `SecurityException`.
`abstract void`	`enforceUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags, String message)` Enforce both a Uri and normal permission.
`abstract void`	`enforceUriPermission(Uri uri, int pid, int uid, int modeFlags, String message)` If a particular process and uid has not been granted permission to access a specific URI, throw `SecurityException`.
`abstract String[]`	`fileList()` Returns an array of strings naming the private files associated with this Context's application package.
`abstract Context`	`getApplicationContext()` Return the context of the single, global Application object of the current process.
`abstract ApplicationInfo`	`getApplicationInfo()` Return the full application info for this context's package.
`abstract AssetManager`	`getAssets()` Returns an AssetManager instance for the application's package.
`AttributionSource`	`getAttributionSource()`
`String`	`getAttributionTag()` Attribution can be used in complex apps to logically separate parts of the app.
`abstract File`	`getCacheDir()` Returns the absolute path to the application specific cache directory on the filesystem.
`abstract ClassLoader`	`getClassLoader()` Return a class loader you can use to retrieve classes in this package.
`abstract File`	`getCodeCacheDir()` Returns the absolute path to the application specific cache directory on the filesystem designed for storing cached code.
`final int`	`getColor(int id)` Returns a color associated with a particular resource ID and styled for the current theme.
`final ColorStateList`	`getColorStateList(int id)` Returns a color state list associated with a particular resource ID and styled for the current theme.
`abstract ContentResolver`	`getContentResolver()` Return a ContentResolver instance for your application's package.
`abstract File`	`getDataDir()` Returns the absolute path to the directory on the filesystem where all private files belonging to this app are stored.
`abstract File`	`getDatabasePath(String name)` Returns the absolute path on the filesystem where a database created with `openOrCreateDatabase(String, int, CursorFactory)` is stored.
`int`	`getDeviceId()` Gets the device ID this context is associated with.
`abstract File`	`getDir(String name, int mode)` Retrieve, creating if needed, a new directory in which the application can place its own custom data files.
`Display`	`getDisplay()` Get the display this context is associated with.
`final Drawable`	`getDrawable(int id)` Returns a drawable object associated with a particular resource ID and styled for the current theme.
`abstract File`	`getExternalCacheDir()` Returns absolute path to application-specific directory on the primary shared/external storage device where the application can place cache files it owns.
`abstract File[]`	`getExternalCacheDirs()` Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place cache files it owns.
`abstract File`	`getExternalFilesDir(String type)` Returns the absolute path to the directory on the primary shared/external storage device where the application can place persistent files it owns.
`abstract File[]`	`getExternalFilesDirs(String type)` Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place persistent files it owns.
`abstract File[]`	`getExternalMediaDirs()` This method was deprecated in API level 30. These directories still exist and are scanned, but developers are encouraged to migrate to inserting content into a `MediaStore` collection directly, as any app can contribute new media to `MediaStore` with no permissions required, starting in `Build.VERSION_CODES.Q`.
`abstract File`	`getFileStreamPath(String name)` Returns the absolute path on the filesystem where a file created with `openFileOutput(String, int)` is stored.
`abstract File`	`getFilesDir()` Returns the absolute path to the directory on the filesystem where files created with `openFileOutput(String, int)` are stored.
`Executor`	`getMainExecutor()` Return an `Executor` that will run enqueued tasks on the main thread associated with this context.
`abstract Looper`	`getMainLooper()` Return the Looper for the main thread of the current process.
`abstract File`	`getNoBackupFilesDir()` Returns the absolute path to the directory on the filesystem similar to `getFilesDir()`.
`abstract File`	`getObbDir()` Return the primary shared/external storage directory where this application's OBB files (if there are any) can be found.
`abstract File[]`	`getObbDirs()` Returns absolute paths to application-specific directories on all shared/external storage devices where the application's OBB files (if there are any) can be found.
`String`	`getOpPackageName()` Return the package name that should be used for `AppOpsManager` calls from this context, so that app ops manager's uid verification will work with the name.
`abstract String`	`getPackageCodePath()` Return the full path to this context's primary Android package.
`abstract PackageManager`	`getPackageManager()` Return PackageManager instance to find global package information.
`abstract String`	`getPackageName()` Return the name of this application's package.
`abstract String`	`getPackageResourcePath()` Return the full path to this context's primary Android package.
`ContextParams`	`getParams()` Return the set of parameters which this Context was created with, if it was created via `createContext(android.content.ContextParams)`.
`abstract Resources`	`getResources()` Returns a Resources instance for the application's package.
`abstract SharedPreferences`	`getSharedPreferences(String name, int mode)` Retrieve and hold the contents of the preferences file 'name', returning a SharedPreferences through which you can retrieve and modify its values.
`final String`	`getString(int resId)` Returns a localized string from the application's package's default string table.
`final String`	`getString(int resId, Object... formatArgs)` Returns a localized formatted string from the application's package's default string table, substituting the format arguments as defined in `Formatter` and `String.format(String, Object)`.
`final <T> T`	`getSystemService(Class<T> serviceClass)` Return the handle to a system-level service by class.
`abstract Object`	`getSystemService(String name)` Return the handle to a system-level service by name.
`abstract String`	`getSystemServiceName(Class<?> serviceClass)` Gets the name of the system-level service that is represented by the specified class.
`final CharSequence`	`getText(int resId)` Return a localized, styled CharSequence from the application's package's default string table.
`abstract Resources.Theme`	`getTheme()` Return the Theme object associated with this Context.
`abstract Drawable`	`getWallpaper()` This method was deprecated in API level 15. Use `WallpaperManager.get()` instead.
`abstract int`	`getWallpaperDesiredMinimumHeight()` This method was deprecated in API level 15. Use `WallpaperManager.getDesiredMinimumHeight()` instead.
`abstract int`	`getWallpaperDesiredMinimumWidth()` This method was deprecated in API level 15. Use `WallpaperManager.getDesiredMinimumWidth()` instead.
`abstract void`	`grantUriPermission(String toPackage, Uri uri, int modeFlags)` Grant permission to access a specific Uri to another package, regardless of whether that package has general permission to access the Uri's content provider.
`abstract boolean`	`isDeviceProtectedStorage()` Indicates if the storage APIs of this Context are backed by device-protected storage.
`boolean`	`isRestricted()` Indicates whether this Context is restricted.
`boolean`	`isUiContext()` Returns `true` if the context is a UI context which can access UI components such as `WindowManager`, `LayoutInflater` or `WallpaperManager`.
`abstract boolean`	`moveDatabaseFrom(Context sourceContext, String name)` Move an existing database file from the given source storage context to this context.
`abstract boolean`	`moveSharedPreferencesFrom(Context sourceContext, String name)` Move an existing shared preferences file from the given source storage context to this context.
`final TypedArray`	`obtainStyledAttributes(AttributeSet set, int[] attrs)` Retrieve styled attribute information in this Context's theme.
`final TypedArray`	`obtainStyledAttributes(AttributeSet set, int[] attrs, int defStyleAttr, int defStyleRes)` Retrieve styled attribute information in this Context's theme.
`final TypedArray`	`obtainStyledAttributes(int resid, int[] attrs)` Retrieve styled attribute information in this Context's theme.
`final TypedArray`	`obtainStyledAttributes(int[] attrs)` Retrieve styled attribute information in this Context's theme.
`abstract FileInputStream`	`openFileInput(String name)` Open a private file associated with this Context's application package for reading.
`abstract FileOutputStream`	`openFileOutput(String name, int mode)` Open a private file associated with this Context's application package for writing.
`abstract SQLiteDatabase`	`openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory, DatabaseErrorHandler errorHandler)` Open a new private SQLiteDatabase associated with this Context's application package.
`abstract SQLiteDatabase`	`openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory)` Open a new private SQLiteDatabase associated with this Context's application package.
`abstract Drawable`	`peekWallpaper()` This method was deprecated in API level 15. Use `WallpaperManager.peek()` instead.
`void`	`registerComponentCallbacks(ComponentCallbacks callback)` Add a new `ComponentCallbacks` to the base application of the Context, which will be called at the same times as the ComponentCallbacks methods of activities and other components are called.
`void`	`registerDeviceIdChangeListener(Executor executor, IntConsumer listener)` Adds a new device ID changed listener to the `Context`, which will be called when the device association is changed by the system.
`abstract Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter)` Register a BroadcastReceiver to be run in the main activity thread.
`abstract Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter, int flags)` Register to receive intent broadcasts, with the receiver optionally being exposed to Instant Apps.
`abstract Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler, int flags)` Register to receive intent broadcasts, to run in the context of `scheduler`.
`abstract Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler)` Register to receive intent broadcasts, to run in the context of `scheduler`.
`abstract void`	`removeStickyBroadcast(Intent intent)` This method was deprecated in API level 21. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`abstract void`	`removeStickyBroadcastAsUser(Intent intent, UserHandle user)` This method was deprecated in API level 21. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`revokeSelfPermissionOnKill(String permName)` Triggers the asynchronous revocation of a runtime permission.
`void`	`revokeSelfPermissionsOnKill(Collection<String> permissions)` Triggers the revocation of one or more permissions for the calling package.
`abstract void`	`revokeUriPermission(Uri uri, int modeFlags)` Remove all permissions to access a particular content provider Uri that were previously added with `grantUriPermission(String, Uri, int)` or any other mechanism.
`abstract void`	`revokeUriPermission(String toPackage, Uri uri, int modeFlags)` Remove permissions to access a particular content provider Uri that were previously added with `grantUriPermission(String, Uri, int)` for a specific target package.
`void`	`sendBroadcast(Intent intent, String receiverPermission, Bundle options)` Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.
`abstract void`	`sendBroadcast(Intent intent, String receiverPermission)` Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.
`abstract void`	`sendBroadcast(Intent intent)` Broadcast the given intent to all interested BroadcastReceivers.
`abstract void`	`sendBroadcastAsUser(Intent intent, UserHandle user)` Version of `sendBroadcast(android.content.Intent)` that allows you to specify the user the broadcast will be sent to.
`abstract void`	`sendBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission)` Version of `sendBroadcast(android.content.Intent, java.lang.String)` that allows you to specify the user the broadcast will be sent to.
`void`	`sendBroadcastWithMultiplePermissions(Intent intent, String[] receiverPermissions)` Broadcast the given intent to all interested BroadcastReceivers, allowing an array of required permissions to be enforced.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle)` that allows you to specify the App Op to enforce restrictions on which receivers the broadcast will be sent to.
`abstract void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendBroadcast(android.content.Intent)` that allows you to receive data back from the broadcast.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options)` Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendBroadcast(android.content.Intent)` that allows you to receive data back from the broadcast.
`abstract void`	`sendOrderedBroadcast(Intent intent, String receiverPermission)` Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers.
`abstract void`	`sendOrderedBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle)` that allows you to specify the user the broadcast will be sent to.
`abstract void`	`sendStickyBroadcast(Intent intent)` This method was deprecated in API level 21. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`void`	`sendStickyBroadcast(Intent intent, Bundle options)` This method was deprecated in API level 31. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`abstract void`	`sendStickyBroadcastAsUser(Intent intent, UserHandle user)` This method was deprecated in API level 21. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`abstract void`	`sendStickyOrderedBroadcast(Intent intent, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` This method was deprecated in API level 21. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`abstract void`	`sendStickyOrderedBroadcastAsUser(Intent intent, UserHandle user, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` This method was deprecated in API level 21. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.
`abstract void`	`setTheme(int resid)` Set the base theme for this context.
`abstract void`	`setWallpaper(Bitmap bitmap)` This method was deprecated in API level 15. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `Manifest.permission.SET_WALLPAPER`.
`abstract void`	`setWallpaper(InputStream data)` This method was deprecated in API level 15. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `Manifest.permission.SET_WALLPAPER`.
`abstract void`	`startActivities(Intent[] intents, Bundle options)` Launch multiple new activities.
`abstract void`	`startActivities(Intent[] intents)` Same as `startActivities(android.content.Intent[], android.os.Bundle)` with no options specified.
`abstract void`	`startActivity(Intent intent)` Same as `startActivity(android.content.Intent, android.os.Bundle)` with no options specified.
`abstract void`	`startActivity(Intent intent, Bundle options)` Launch a new activity.
`abstract ComponentName`	`startForegroundService(Intent service)` Similar to `startService(android.content.Intent)`, but with an implicit promise that the Service will call `startForeground(int, android.app.Notification)` once it begins running.
`abstract boolean`	`startInstrumentation(ComponentName className, String profileFile, Bundle arguments)` Start executing an `Instrumentation` class.
`abstract void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)` Same as `startIntentSender(android.content.IntentSender, android.content.Intent, int, int, int, android.os.Bundle)` with no options specified.
`abstract void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Like `startActivity(android.content.Intent, android.os.Bundle)`, but taking a IntentSender to start.
`abstract ComponentName`	`startService(Intent service)` Request that a given application service be started.
`abstract boolean`	`stopService(Intent service)` Request that a given application service be stopped.
`abstract void`	`unbindService(ServiceConnection conn)` Disconnect from an application service.
`void`	`unregisterComponentCallbacks(ComponentCallbacks callback)` Remove a `ComponentCallbacks` object that was previously registered with `registerComponentCallbacks(android.content.ComponentCallbacks)`.
`void`	`unregisterDeviceIdChangeListener(IntConsumer listener)` Removes a device ID changed listener from the Context.
`abstract void`	`unregisterReceiver(BroadcastReceiver receiver)` Unregister a previously registered BroadcastReceiver.
`void`	`updateServiceGroup(ServiceConnection conn, int group, int importance)` For a service previously bound with `bindService(Intent, BindServiceFlags, Executor, ServiceConnection)` or a related method, change how the system manages that service's process in relation to other processes.

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          android.view.LayoutInflater.Factory2


      onCreateView(View parent, String name, Context context, AttributeSet attrs)

Version of LayoutInflater.Factory.onCreateView(java.lang.String, android.content.Context, android.util.AttributeSet) that also supplies the parent that the view created view will be placed in.

From interface


        
          android.view.Window.Callback

`abstract boolean`	`dispatchGenericMotionEvent(MotionEvent event)` Called to process generic motion events.
`abstract boolean`	`dispatchKeyEvent(KeyEvent event)` Called to process key events.
`abstract boolean`	`dispatchKeyShortcutEvent(KeyEvent event)` Called to process a key shortcut event.
`abstract boolean`	`dispatchPopulateAccessibilityEvent(AccessibilityEvent event)` Called to process population of `AccessibilityEvent`s.
`abstract boolean`	`dispatchTouchEvent(MotionEvent event)` Called to process touch screen events.
`abstract boolean`	`dispatchTrackballEvent(MotionEvent event)` Called to process trackball events.
`abstract void`	`onActionModeFinished(ActionMode mode)` Called when an action mode has been finished.
`abstract void`	`onActionModeStarted(ActionMode mode)` Called when an action mode has been started.
`abstract void`	`onAttachedToWindow()` Called when the window has been attached to the window manager.
`abstract void`	`onContentChanged()` This hook is called whenever the content view of the screen changes (due to a call to `Window.setContentView` or `Window.addContentView`).
`abstract boolean`	`onCreatePanelMenu(int featureId, Menu menu)` Initialize the contents of the menu for panel 'featureId'.
`abstract View`	`onCreatePanelView(int featureId)` Instantiate the view to display in the panel for 'featureId'.
`abstract void`	`onDetachedFromWindow()` Called when the window has been detached from the window manager.
`abstract boolean`	`onMenuItemSelected(int featureId, MenuItem item)` Called when a panel's menu item has been selected by the user.
`abstract boolean`	`onMenuOpened(int featureId, Menu menu)` Called when a panel's menu is opened by the user.
`abstract void`	`onPanelClosed(int featureId, Menu menu)` Called when a panel is being closed.
`default void`	`onPointerCaptureChanged(boolean hasCapture)` Called when pointer capture is enabled or disabled for the current window.
`abstract boolean`	`onPreparePanel(int featureId, View view, Menu menu)` Prepare a panel to be displayed.
`default void`	`onProvideKeyboardShortcuts(List<KeyboardShortcutGroup> data, Menu menu, int deviceId)` Called when Keyboard Shortcuts are requested for the current window.
`abstract boolean`	`onSearchRequested()` Called when the user signals the desire to start a search.
`abstract boolean`	`onSearchRequested(SearchEvent searchEvent)` Called when the user signals the desire to start a search.
`abstract void`	`onWindowAttributesChanged(WindowManager.LayoutParams attrs)` This is called whenever the current window attributes change.
`abstract void`	`onWindowFocusChanged(boolean hasFocus)` This hook is called whenever the window focus changes.
`abstract ActionMode`	`onWindowStartingActionMode(ActionMode.Callback callback)` Called when an action mode is being started for this window.
`abstract ActionMode`	`onWindowStartingActionMode(ActionMode.Callback callback, int type)` Called when an action mode is being started for this window.

From interface


        
          android.view.KeyEvent.Callback

`abstract boolean`	`onKeyDown(int keyCode, KeyEvent event)` Called when a key down event has occurred.
`abstract boolean`	`onKeyLongPress(int keyCode, KeyEvent event)` Called when a long press has occurred.
`abstract boolean`	`onKeyMultiple(int keyCode, int count, KeyEvent event)` Called when a user's interaction with an analog control, such as flinging a trackball, generates simulated down/up events for the same key multiple times in quick succession.
`abstract boolean`	`onKeyUp(int keyCode, KeyEvent event)` Called when a key up event has occurred.

From interface


        
          android.view.View.OnCreateContextMenuListener


      onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)

Called when the context menu for this view is being built.

From interface


        
          android.content.ComponentCallbacks2


      onTrimMemory(int level)

Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process.

From interface


        
          android.view.LayoutInflater.Factory


      onCreateView(String name, Context context, AttributeSet attrs)

Hook you can supply that is called when inflating from a LayoutInflater.

From interface


        
          android.content.ComponentCallbacks

`abstract void`	`onConfigurationChanged(Configuration newConfig)` Called by the system when the device configuration changes while your component is running.
`abstract void`	`onLowMemory()` This method was deprecated in API level 35. Since API level 14 this is superseded by `ComponentCallbacks2#onTrimMemory`. Since API level 34 this is never called. Apps targeting API level 34 and above may provide an empty implementation.

Constants

DEFAULT_KEYS_DIALER

Added in API level 1

public static final int DEFAULT_KEYS_DIALER

Use with setDefaultKeyMode(int) to launch the dialer during default key handling.

See also:

setDefaultKeyMode(int)

Constant Value: 1 (0x00000001)

DEFAULT_KEYS_DISABLE

Added in API level 1

public static final int DEFAULT_KEYS_DISABLE

Use with setDefaultKeyMode(int) to turn off default handling of keys.

See also:

setDefaultKeyMode(int)

Constant Value: 0 (0x00000000)

DEFAULT_KEYS_SEARCH_GLOBAL

Added in API level 1

public static final int DEFAULT_KEYS_SEARCH_GLOBAL

Use with setDefaultKeyMode(int) to specify that unhandled keystrokes will start a global search (typically web search, but some platforms may define alternate methods for global search)

See android.app.SearchManager for more details.

See also:

setDefaultKeyMode(int)

Constant Value: 4 (0x00000004)

DEFAULT_KEYS_SEARCH_LOCAL

Added in API level 1

public static final int DEFAULT_KEYS_SEARCH_LOCAL

Use with setDefaultKeyMode(int) to specify that unhandled keystrokes will start an application-defined search. (If the application or activity does not actually define a search, the keys will be ignored.)

See android.app.SearchManager for more details.

See also:

setDefaultKeyMode(int)

Constant Value: 3 (0x00000003)

DEFAULT_KEYS_SHORTCUT

Added in API level 1

public static final int DEFAULT_KEYS_SHORTCUT

Use with setDefaultKeyMode(int) to execute a menu shortcut in default key handling.

That is, the user does not need to hold down the menu key to execute menu shortcuts.

See also:

setDefaultKeyMode(int)

Constant Value: 2 (0x00000002)

FULLSCREEN_MODE_REQUEST_ENTER

Added in API level 34

public static final int FULLSCREEN_MODE_REQUEST_ENTER

Request type of requestFullscreenMode(int, android.os.OutcomeReceiver), to request enter fullscreen mode from multi-window mode.

Constant Value: 1 (0x00000001)

FULLSCREEN_MODE_REQUEST_EXIT

Added in API level 34

public static final int FULLSCREEN_MODE_REQUEST_EXIT

Request type of requestFullscreenMode(int, android.os.OutcomeReceiver), to request exiting the requested fullscreen mode and restore to the previous multi-window mode.

Constant Value: 0 (0x00000000)

OVERRIDE_TRANSITION_CLOSE

Added in API level 34

public static final int OVERRIDE_TRANSITION_CLOSE

Request type of overrideActivityTransition(int, int, int) or overrideActivityTransition(int, int, int, int), to override the closing transition.

Constant Value: 1 (0x00000001)

OVERRIDE_TRANSITION_OPEN

Added in API level 34

public static final int OVERRIDE_TRANSITION_OPEN

Request type of overrideActivityTransition(int, int, int) or overrideActivityTransition(int, int, int, int), to override the opening transition.

Constant Value: 0 (0x00000000)

RESULT_CANCELED

Added in API level 1

public static final int RESULT_CANCELED

Standard activity result: operation canceled.

Constant Value: 0 (0x00000000)

RESULT_FIRST_USER

Added in API level 1

public static final int RESULT_FIRST_USER

Start of user-defined activity results.

Constant Value: 1 (0x00000001)

RESULT_OK

Added in API level 1

public static final int RESULT_OK

Standard activity result: operation succeeded.

Constant Value: -1 (0xffffffff)

Fields

FOCUSED_STATE_SET

Added in API level 1

protected static final int[] FOCUSED_STATE_SET

Public constructors

Activity

public Activity ()

Public methods

addContentView

Added in API level 1

public void addContentView (View view, 
                ViewGroup.LayoutParams params)

Add an additional content view to the activity. Added after any existing ones in the activity -- existing views are NOT removed.

Parameters
`view`	`View`: The desired content to display.
`params`	`ViewGroup.LayoutParams`: Layout parameters for the view.

clearOverrideActivityTransition

Added in API level 34

public void clearOverrideActivityTransition (int overrideType)

Clears the animations which are set from overrideActivityTransition(int, int, int).

Parameters
`overrideType`	`int`: `OVERRIDE_TRANSITION_OPEN` clear the animation set for starting a new activity. `OVERRIDE_TRANSITION_CLOSE` clear the animation set for finishing an activity. Value is `OVERRIDE_TRANSITION_OPEN`, or `OVERRIDE_TRANSITION_CLOSE`

See also:

closeContextMenu

Added in API level 3

public void closeContextMenu ()

Programmatically closes the most recently opened context menu, if showing.

closeOptionsMenu

Added in API level 1

public void closeOptionsMenu ()

Progammatically closes the options menu. If the options menu is already closed, this method does nothing.

createPendingResult

Added in API level 1

public PendingIntent createPendingResult (int requestCode, 
                Intent data, 
                int flags)

Create a new PendingIntent object which you can hand to others for them to use to send result data back to your onActivityResult(int, int, Intent) callback. The created object will be either one-shot (becoming invalid after a result is sent back) or multiple (allowing any number of results to be sent through it).

Parameters
`requestCode`	`int`: Private request code for the sender that will be associated with the result data when it is returned. The sender can not modify this value, allowing you to identify incoming results.
`data`	`Intent`: Default data to supply in the result, which may be modified by the sender. This value cannot be `null`.
`flags`	`int`: May be `PendingIntent.FLAG_ONE_SHOT`, `PendingIntent.FLAG_NO_CREATE`, `PendingIntent.FLAG_CANCEL_CURRENT`, `PendingIntent.FLAG_UPDATE_CURRENT`, or any of the flags as supported by `Intent.fillIn()` to control which unspecified parts of the intent that can be supplied when the actual send happens. Value is either `0` or a combination of `PendingIntent.FLAG_ONE_SHOT`, `PendingIntent.FLAG_NO_CREATE`, `PendingIntent.FLAG_CANCEL_CURRENT`, `PendingIntent.FLAG_UPDATE_CURRENT`, `PendingIntent.FLAG_IMMUTABLE`, `PendingIntent.FLAG_MUTABLE`, android.app.PendingIntent.FLAG_MUTABLE_UNAUDITED, `PendingIntent.FLAG_ALLOW_UNSAFE_IMPLICIT_INTENT`, `Intent.FILL_IN_ACTION`, `Intent.FILL_IN_DATA`, `Intent.FILL_IN_CATEGORIES`, `Intent.FILL_IN_COMPONENT`, `Intent.FILL_IN_PACKAGE`, `Intent.FILL_IN_SOURCE_BOUNDS`, `Intent.FILL_IN_SELECTOR`, and `Intent.FILL_IN_CLIP_DATA`

Returns
`PendingIntent`	Returns an existing or new PendingIntent matching the given parameters. May return null only if `PendingIntent.FLAG_NO_CREATE` has been supplied.

See also:

PendingIntent

dismissDialog

Added in API level 1
Deprecated in API level 15

public final void dismissDialog (int id)

This method was deprecated in API level 15.
Use the new DialogFragment class with FragmentManager instead; this is also available on older platforms through the Android compatibility package.

Dismiss a dialog that was previously shown via showDialog(int).

Parameters
`id`	`int`: The id of the managed dialog.

Throws
`IllegalArgumentException`	if the id was not previously shown via `showDialog(int)`.

See also:

dismissKeyboardShortcutsHelper

Added in API level 24

public final void dismissKeyboardShortcutsHelper ()

Dismiss the Keyboard Shortcuts screen.

dispatchGenericMotionEvent

Added in API level 12

public boolean dispatchGenericMotionEvent (MotionEvent ev)

Called to process generic motion events. You can override this to intercept all generic motion events before they are dispatched to the window. Be sure to call this implementation for generic motion events that should be handled normally.

Parameters
`ev`	`MotionEvent`: The generic motion event.

Returns
`boolean`	boolean Return true if this event was consumed.

See also:

onGenericMotionEvent(MotionEvent)

dispatchKeyEvent

Added in API level 1

public boolean dispatchKeyEvent (KeyEvent event)

Called to process key events. You can override this to intercept all key events before they are dispatched to the window. Be sure to call this implementation for key events that should be handled normally.

Parameters
`event`	`KeyEvent`: The key event.

Returns
`boolean`	boolean Return true if this event was consumed.

dispatchKeyShortcutEvent

Added in API level 11

public boolean dispatchKeyShortcutEvent (KeyEvent event)

Called to process a key shortcut event. You can override this to intercept all key shortcut events before they are dispatched to the window. Be sure to call this implementation for key shortcut events that should be handled normally.

Parameters
`event`	`KeyEvent`: The key shortcut event.

Returns
`boolean`	True if this event was consumed.

dispatchPopulateAccessibilityEvent

Added in API level 4

public boolean dispatchPopulateAccessibilityEvent (AccessibilityEvent event)

Called to process population of AccessibilityEvents.

Parameters
`event`	`AccessibilityEvent`: The event.

Returns
`boolean`	boolean Return true if event population was completed.

dispatchTouchEvent

Added in API level 1

public boolean dispatchTouchEvent (MotionEvent ev)

Called to process touch screen events. You can override this to intercept all touch screen events before they are dispatched to the window. Be sure to call this implementation for touch screen events that should be handled normally.

Parameters
`ev`	`MotionEvent`: The touch screen event.

Returns
`boolean`	boolean Return true if this event was consumed.

See also:

onTouchEvent(MotionEvent)

dispatchTrackballEvent

Added in API level 1

public boolean dispatchTrackballEvent (MotionEvent ev)

Called to process trackball events. You can override this to intercept all trackball events before they are dispatched to the window. Be sure to call this implementation for trackball events that should be handled normally.

Parameters
`ev`	`MotionEvent`: The trackball event.

Returns
`boolean`	boolean Return true if this event was consumed.

See also:

onTrackballEvent(MotionEvent)

dump

Added in API level 11

public void dump (String prefix, 
                FileDescriptor fd, 
                PrintWriter writer, 
                String[] args)

Print the Activity's state into the given stream. This gets invoked if you run adb shell dumpsys activity <activity_component_name>.

This method won't be called if the app targets Build.VERSION_CODES.TIRAMISU or later if the dump request starts with one of the following arguments:

--autofill
--contentcapture
--translation
--list-dumpables
--dump-dumpable

Parameters
`prefix`	`String`: Desired prefix to prepend at each line of output. This value cannot be `null`.
`fd`	`FileDescriptor`: The raw file descriptor that the dump is being sent to. This value may be `null`.
`writer`	`PrintWriter`: The PrintWriter to which you should dump your state. This will be closed for you after you return. This value cannot be `null`.
`args`	`String`: additional arguments to the dump request. This value may be `null`.

enterPictureInPictureMode

Added in API level 26

public boolean enterPictureInPictureMode (PictureInPictureParams params)

Puts the activity in picture-in-picture mode if possible in the current system state. The set parameters in will be combined with the parameters from prior calls to setPictureInPictureParams(android.app.PictureInPictureParams). The system may disallow entering picture-in-picture in various cases, including when the activity is not visible, if the screen is locked or if the user has an activity pinned.

By default, system calculates the dimension of picture-in-picture window based on the given . See Picture-in-picture Support on how to override this behavior.

Returns
`boolean`	true if the system successfully put this activity into picture-in-picture mode or was already in picture-in-picture mode (see `isInPictureInPictureMode()`). If the device does not support picture-in-picture, return false.

See also:

enterPictureInPictureMode

Added in API level 24
Deprecated in API level 26

public void enterPictureInPictureMode ()

Puts the activity in picture-in-picture mode if possible in the current system state. Any prior calls to setPictureInPictureParams(android.app.PictureInPictureParams) will still apply when entering picture-in-picture through this call.

See also:

findViewById

Added in API level 1

public T findViewById (int id)

Finds a view that was identified by the android:id XML attribute that was processed in onCreate(Bundle).

Note: In most cases -- depending on compiler support -- the resulting view is automatically cast to the target class type. If the target class type is unconstrained, an explicit cast may be necessary.

Parameters
`id`	`int`: the ID to search for

Returns
`T`	a view with given ID if found, or `null` otherwise

See also:

finish

Added in API level 1

public void finish ()

Call this when your activity is done and should be closed. The ActivityResult is propagated back to whoever launched you via onActivityResult().

finishActivity

Added in API level 1

public void finishActivity (int requestCode)

Force finish another activity that you had previously started with startActivityForResult(Intent, int).

Parameters
`requestCode`	`int`: The request code of the activity that you had given to startActivityForResult(). If there are multiple activities started with this request code, they will all be finished.

finishActivityFromChild

Added in API level 1
Deprecated in API level 30

public void finishActivityFromChild (Activity child, 
                int requestCode)

This method was deprecated in API level 30.
Use finishActivity(int) instead.

This is called when a child activity of this one calls its finishActivity().

Parameters
`child`	`Activity`: The activity making the call. This value cannot be `null`.
`requestCode`	`int`: Request code that had been used to start the activity.

finishAffinity

Added in API level 16

public void finishAffinity ()

Finish this activity as well as all activities immediately below it in the current task that have the same affinity. This is typically used when an application can be launched on to another task (such as from an ACTION_VIEW of a content type it understands) and the user has used the up navigation to switch out of the current task and in to its own task. In this case, if the user has navigated down into any other activities of the second application, all of those should be removed from the original task as part of the task switch.

Note that this finish does not allow you to deliver results to the previous activity, and an exception will be thrown if you are trying to do so.

finishAfterTransition

Added in API level 21

public void finishAfterTransition ()

Reverses the Activity Scene entry Transition and triggers the calling Activity to reverse its exit Transition. When the exit Transition completes, finish() is called. If no entry Transition was used, finish() is called immediately and the Activity exit Transition is run.

See also:

ActivityOptions.makeSceneTransitionAnimation(Activity, android.util.Pair[])

finishAndRemoveTask

Added in API level 21

public void finishAndRemoveTask ()

Call this when your activity is done and should be closed and the task should be completely removed as a part of finishing the root activity of the task.

finishFromChild

Added in API level 1
Deprecated in API level 30

public void finishFromChild (Activity child)

This method was deprecated in API level 30.
Use finish() instead.

This is called when a child activity of this one calls its finish() method. The default implementation simply calls finish() on this activity (the parent), finishing the entire group.

Parameters
`child`	`Activity`: The activity making the call.

See also:

finish()

getActionBar

Added in API level 11

public ActionBar getActionBar ()

Retrieve a reference to this activity's ActionBar.

Returns
`ActionBar`	The Activity's ActionBar, or null if it does not have one.

getApplication

Added in API level 1

public final Application getApplication ()

Return the application that owns this activity.

Returns
`Application`

getCaller

Added in API level 35

public ComponentCaller getCaller ()

Returns the ComponentCaller instance of the app that started this activity.

To keep the ComponentCaller instance for future use, call setIntent(android.content.Intent, android.app.ComponentCaller), and use this method to retrieve it.

Note that in onNewIntent(Intent), this method will return the original ComponentCaller. You can use setIntent(android.content.Intent, android.app.ComponentCaller) to update it to the new ComponentCaller.

Returns
`ComponentCaller`	`ComponentCaller` instance corresponding to the intent from `getIntent()`, or `null` if the activity was not launched with that intent

See also:

getCallingActivity

Added in API level 1

public ComponentName getCallingActivity ()

Return the name of the activity that invoked this activity. This is who the data in setResult() will be sent to. You can use this information to validate that the recipient is allowed to receive the data.

Note: if the calling activity is not expecting a result (that is it did not use the startActivityForResult(Intent, int) form that includes a request code), then the calling package will be null.

Returns
`ComponentName`	The ComponentName of the activity that will receive your reply, or null if none.

getCallingPackage

Added in API level 1

public String getCallingPackage ()

Return the name of the package that invoked this activity. This is who the data in setResult() will be sent to. You can use this information to validate that the recipient is allowed to receive the data.

Note: if the calling activity is not expecting a result (that is it did not use the startActivityForResult(Intent, int) form that includes a request code), then the calling package will be null.

Note: prior to Build.VERSION_CODES.JELLY_BEAN_MR2, the result from this method was unstable. If the process hosting the calling package was no longer running, it would return null instead of the proper package name. You can use getCallingActivity() and retrieve the package name from that instead.

Returns
`String`	The package of the activity that will receive your reply, or null if none.

getChangingConfigurations

Added in API level 1

public int getChangingConfigurations ()

If this activity is being destroyed because it can not handle a configuration parameter being changed (and thus its onConfigurationChanged(android.content.res.Configuration) method is not being called), then you can use this method to discover the set of changes that have occurred while in the process of being destroyed. Note that there is no guarantee that these will be accurate (other changes could have happened at any time), so you should only use this as an optimization hint.

Returns
`int`	Returns a bit field of the configuration parameters that are changing, as defined by the `Configuration` class.

getComponentName

Added in API level 1

public ComponentName getComponentName ()

Returns the complete component name of this activity.

Returns
`ComponentName`	Returns the complete component name for this activity

getContentScene

Added in API level 21

public Scene getContentScene ()

Retrieve the Scene representing this window's current content. Requires Window#FEATURE_CONTENT_TRANSITIONS.

This method will return null if the current content is not represented by a Scene.

Returns
`Scene`	Current Scene being shown or null

getContentTransitionManager

Added in API level 21

public TransitionManager getContentTransitionManager ()

Retrieve the TransitionManager responsible for default transitions in this window. Requires Window#FEATURE_CONTENT_TRANSITIONS.

This method will return non-null after content has been initialized (e.g. by using setContentView(View)) if Window#FEATURE_CONTENT_TRANSITIONS has been granted.

Returns
`TransitionManager`	This window's content TransitionManager or null if none is set.

getCurrentCaller

Added in API level 35

public ComponentCaller getCurrentCaller ()

Returns the ComponentCaller instance of the app that re-launched this activity with a new intent via onNewIntent(Intent) or onActivityResult(int, int, Intent).

Note that this method only works within the onNewIntent(Intent) and onActivityResult(int, int, Intent) methods. If you call this method outside onNewIntent(Intent) and onActivityResult(int, int, Intent), it will throw an IllegalStateException.

You can also retrieve the caller if you override onNewIntent(android.content.Intent, android.app.ComponentCaller) or onActivityResult(int, int, android.content.Intent, android.app.ComponentCaller).

To keep the ComponentCaller instance for future use, call setIntent(android.content.Intent, android.app.ComponentCaller), and use getCaller() to retrieve it.

Returns
`ComponentCaller`	`ComponentCaller` instance This value cannot be `null`.

Throws
`IllegalStateException`	if the caller is `null`, indicating the method was called outside `onNewIntent(Intent)`

See also:

getCurrentFocus

Added in API level 1

public View getCurrentFocus ()

Calls Window.getCurrentFocus() on the Window of this Activity to return the currently focused view.

Returns
`View`	View The current View with focus or null.

See also:

getFragmentManager

Added in API level 11
Deprecated in API level 28

public FragmentManager getFragmentManager ()

This method was deprecated in API level 28.
Use FragmentActivity.getSupportFragmentManager()

Return the FragmentManager for interacting with fragments associated with this activity.

Returns
`FragmentManager`

getInitialCaller

Added in API level 35

public ComponentCaller getInitialCaller ()

Returns the ComponentCaller instance of the app that initially launched this activity.

Note that calls to onNewIntent(Intent) and setIntent(Intent) have no effect on the returned value of this method.

Returns
`ComponentCaller`	`ComponentCaller` instance This value cannot be `null`.

See also:

ComponentCaller

getIntent

Added in API level 1

public Intent getIntent ()

Returns the intent that started this activity.

To keep the Intent instance for future use, call setIntent(android.content.Intent), and use this method to retrieve it.

Note that in onNewIntent(Intent), this method will return the original Intent. You can use setIntent(android.content.Intent) to update it to the new Intent.

Returns
`Intent`	`Intent` instance that started this activity, or that was kept for future use

getLastNonConfigurationInstance

Added in API level 1

public Object getLastNonConfigurationInstance ()

Retrieve the non-configuration instance data that was previously returned by onRetainNonConfigurationInstance(). This will be available from the initial onCreate(Bundle) and onStart() calls to the new instance, allowing you to extract any useful dynamic state from the previous instance.

Note that the data you retrieve here should only be used as an optimization for handling configuration changes. You should always be able to handle getting a null pointer back, and an activity must still be able to restore itself to its previous state (through the normal onSaveInstanceState(android.os.Bundle) mechanism) even if this function returns null.

Note: For most cases you should use the Fragment API Fragment#setRetainInstance(boolean) instead; this is also available on older platforms through the Android support libraries.

Returns
`Object`	the object previously returned by `onRetainNonConfigurationInstance()`

getLaunchedFromPackage

Added in API level 34

public String getLaunchedFromPackage ()

Returns the package name of the app that initially launched this activity.

In order to receive the launching app's package name, at least one of the following has to be met:

The app must call ActivityOptions#setShareIdentityEnabled(boolean) with a value of true and launch this activity with the resulting ActivityOptions.
The launched activity has the same uid as the launching app.
The launched activity is running in a package that is signed with the same key used to sign the platform (typically only system packages such as Settings will meet this requirement).

. These are the same requirements for getLaunchedFromUid(); if any of these are met, then these methods can be used to obtain the uid and package name of the launching app. If none are met, then null is returned.

Note, even if the above conditions are not met, the launching app's identity may still be available from getCallingPackage() if this activity was started with Activity#startActivityForResult to allow validation of the result's recipient.

Returns
`String`	the package name of the launching app or null if the current activity cannot access the identity of the launching app

See also:

getLaunchedFromUid

Added in API level 34

public int getLaunchedFromUid ()

Returns the uid of the app that initially launched this activity.

In order to receive the launching app's uid, at least one of the following has to be met:

The app must call ActivityOptions#setShareIdentityEnabled(boolean) with a value of true and launch this activity with the resulting ActivityOptions.
The launched activity has the same uid as the launching app.
The launched activity is running in a package that is signed with the same key used to sign the platform (typically only system packages such as Settings will meet this requirement).

. These are the same requirements for getLaunchedFromPackage(); if any of these are met, then these methods can be used to obtain the uid and package name of the launching app. If none are met, then Process#INVALID_UID is returned.

Returns
`int`	the uid of the launching app or `Process#INVALID_UID` if the current activity cannot access the identity of the launching app

See also:

getLayoutInflater

Added in API level 1

public LayoutInflater getLayoutInflater ()

Convenience for calling Window.getLayoutInflater().

Returns
`LayoutInflater`	This value cannot be `null`.

getLoaderManager

Added in API level 11
Deprecated in API level 28

public LoaderManager getLoaderManager ()

This method was deprecated in API level 28.
Use FragmentActivity.getSupportLoaderManager()

Return the LoaderManager for this activity, creating it if needed.

Returns
`LoaderManager`

getLocalClassName

Added in API level 1

public String getLocalClassName ()

Returns class name for this activity with the package prefix removed. This is the default name used to read and write settings.

Returns
`String`	The local class name. This value cannot be `null`.

getMaxNumPictureInPictureActions

Added in API level 26

public int getMaxNumPictureInPictureActions ()

Return the number of actions that will be displayed in the picture-in-picture UI when the user interacts with the activity currently in picture-in-picture mode. This number may change if the global configuration changes (ie. if the device is plugged into an external display), but will always be at least three.

Returns
`int`

getMediaController

Added in API level 21

public final MediaController getMediaController ()

Gets the controller which should be receiving media key and volume events while this activity is in the foreground.

Returns
`MediaController`	The controller which should receive events.

See also:

setMediaController(android.media.session.MediaController)

getMenuInflater

Added in API level 1

public MenuInflater getMenuInflater ()

Returns a MenuInflater with this context.

Returns
`MenuInflater`	This value cannot be `null`.

getOnBackInvokedDispatcher

Added in API level 33

public OnBackInvokedDispatcher getOnBackInvokedDispatcher ()

Returns the OnBackInvokedDispatcher instance associated with the window that this activity is attached to.

Returns
`OnBackInvokedDispatcher`	This value cannot be `null`.

Throws
`IllegalStateException`	if this Activity is not visual.

getParent

Added in API level 1
Deprecated in API level 35

public final Activity getParent ()

This method was deprecated in API level 35.
ActivityGroup is deprecated.

Returns the parent Activity if this is a child Activity of an ActivityGroup.

Returns
`Activity`

getParentActivityIntent

Added in API level 16

public Intent getParentActivityIntent ()

Obtain an Intent that will launch an explicit target activity specified by this activity's logical parent. The logical parent is named in the application's manifest by the parentActivityName attribute. Activity subclasses may override this method to modify the Intent returned by super.getParentActivityIntent() or to implement a different mechanism of retrieving the parent intent entirely.

Returns
`Intent`	a new Intent targeting the defined parent of this activity or null if there is no valid parent.

getPreferences

Added in API level 1

public SharedPreferences getPreferences (int mode)

Retrieve a SharedPreferences object for accessing preferences that are private to this activity. This simply calls the underlying ContextWrapper.getSharedPreferences(java.lang.String, int) method by passing in this activity's class name as the preferences name.

Parameters
`mode`	`int`: Operating mode. Use `Context.MODE_PRIVATE` for the default operation. Value is either `0` or a combination of `Context.MODE_PRIVATE`, `Context.MODE_WORLD_READABLE`, `Context.MODE_WORLD_WRITEABLE`, and `Context.MODE_MULTI_PROCESS`

Returns
`SharedPreferences`	Returns the single SharedPreferences instance that can be used to retrieve and modify the preference values.

getReferrer

Added in API level 22

public Uri getReferrer ()

Return information about who launched this activity. If the launching Intent contains an Intent.EXTRA_REFERRER, that will be returned as-is; otherwise, if known, an android-app: referrer URI containing the package name that started the Intent will be returned. This may return null if no referrer can be identified -- it is neither explicitly specified, nor is it known which application package was involved.

If called while inside the handling of onNewIntent(Intent), this function will return the referrer that submitted that new intent to the activity only after setIntent(android.content.Intent) is called with the provided intent.

Note that this is not a security feature -- you can not trust the referrer information, applications can spoof it.

Returns
`Uri`

getRequestedOrientation

Added in API level 1

public int getRequestedOrientation ()

Return the current requested orientation of the activity. This will either be the orientation requested in its component's manifest, or the last requested orientation given to setRequestedOrientation(int).

Returns

int

Returns an orientation constant as used in ActivityInfo.screenOrientation. Value is android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSET, ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED, ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_USER, ActivityInfo.SCREEN_ORIENTATION_BEHIND, ActivityInfo.SCREEN_ORIENTATION_SENSOR, ActivityInfo.SCREEN_ORIENTATION_NOSENSOR, ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR, ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_FULL_USER, or ActivityInfo.SCREEN_ORIENTATION_LOCKED

getSearchEvent

Added in API level 23

public final SearchEvent getSearchEvent ()

During the onSearchRequested() callbacks, this function will return the SearchEvent that triggered the callback, if it exists.

Returns
`SearchEvent`	SearchEvent The SearchEvent that triggered the `onSearchRequested()` callback.

getSplashScreen

Added in API level 31

public final SplashScreen getSplashScreen ()

Get the interface that activity use to talk to the splash screen.

Returns
`SplashScreen`	This value cannot be `null`.

See also:

SplashScreen

getSystemService

Added in API level 1

public Object getSystemService (String name)

Return the handle to a system-level service by name. The class of the returned object varies by the requested name. Currently available names are:

WINDOW_SERVICE ("window"): The top-level window manager in which you can place custom windows. The returned object is a WindowManager. Must only be obtained from a visual context such as Activity or a Context created with createWindowContext(int, android.os.Bundle), which are adjusted to the configuration and visual bounds of an area on screen.
LAYOUT_INFLATER_SERVICE ("layout_inflater"): A LayoutInflater for inflating layout resources in this context. Must only be obtained from a visual context such as Activity or a Context created with createWindowContext(int, android.os.Bundle), which are adjusted to the configuration and visual bounds of an area on screen.
ACTIVITY_SERVICE ("activity"): A ActivityManager for interacting with the global activity state of the system.
WALLPAPER_SERVICE ("wallpaper"): A WallpaperService for accessing wallpapers in this context. Must only be obtained from a visual context such as Activity or a Context created with createWindowContext(int, android.os.Bundle), which are adjusted to the configuration and visual bounds of an area on screen.
POWER_SERVICE ("power"): A PowerManager for controlling power management.
ALARM_SERVICE ("alarm"): A AlarmManager for receiving intents at the time of your choosing.
NOTIFICATION_SERVICE ("notification"): A NotificationManager for informing the user of background events.
KEYGUARD_SERVICE ("keyguard"): A KeyguardManager for controlling keyguard.
LOCATION_SERVICE ("location"): A LocationManager for controlling location (e.g., GPS) updates.
SEARCH_SERVICE ("search"): A SearchManager for handling search.
VIBRATOR_MANAGER_SERVICE ("vibrator_manager"): A VibratorManager for accessing the device vibrators, interacting with individual ones and playing synchronized effects on multiple vibrators.
VIBRATOR_SERVICE ("vibrator"): A Vibrator for interacting with the vibrator hardware.
CONNECTIVITY_SERVICE ("connectivity"): A ConnectivityManager for handling management of network connections.
IPSEC_SERVICE ("ipsec"): A IpSecManager for managing IPSec on sockets and networks.
WIFI_SERVICE ("wifi"): A WifiManager for management of Wi-Fi connectivity. On releases before Android 7, it should only be obtained from an application context, and not from any other derived context to avoid memory leaks within the calling process.
WIFI_AWARE_SERVICE ("wifiaware"): A WifiAwareManager for management of Wi-Fi Aware discovery and connectivity.
WIFI_P2P_SERVICE ("wifip2p"): A WifiP2pManager for management of Wi-Fi Direct connectivity.
INPUT_METHOD_SERVICE ("input_method"): An InputMethodManager for management of input methods.
UI_MODE_SERVICE ("uimode"): An UiModeManager for controlling UI modes.
DOWNLOAD_SERVICE ("download"): A DownloadManager for requesting HTTP downloads
BATTERY_SERVICE ("batterymanager"): A BatteryManager for managing battery state
JOB_SCHEDULER_SERVICE ("taskmanager"): A JobScheduler for managing scheduled tasks
NETWORK_STATS_SERVICE ("netstats"): A NetworkStatsManager for querying network usage statistics.
HARDWARE_PROPERTIES_SERVICE ("hardware_properties"): A HardwarePropertiesManager for accessing hardware properties.
DOMAIN_VERIFICATION_SERVICE ("domain_verification"): A DomainVerificationManager for accessing web domain approval state.
DISPLAY_HASH_SERVICE ("display_hash"): A DisplayHashManager for management of display hashes.

Note: System services obtained via this API may be closely associated with the Context in which they are obtained from. In general, do not share the service objects between various different contexts (Activities, Applications, Services, Providers, etc.)

Note: Instant apps, for which PackageManager#isInstantApp() returns true, don't have access to the following system services: DEVICE_POLICY_SERVICE, FINGERPRINT_SERVICE, KEYGUARD_SERVICE, SHORTCUT_SERVICE, USB_SERVICE, WALLPAPER_SERVICE, WIFI_P2P_SERVICE, WIFI_SERVICE, WIFI_AWARE_SERVICE. For these services this method will return null. Generally, if you are running as an instant app you should always check whether the result of this method is null.

Note: When implementing this method, keep in mind that new services can be added on newer Android releases, so if you're looking for just the explicit names mentioned above, make sure to return null when you don't recognize the name — if you throw a RuntimeException exception instead, your app might break on new Android releases.

Parameters

name

String: Value is Context.POWER_SERVICE, Context.WINDOW_SERVICE, Context.LAYOUT_INFLATER_SERVICE, Context.ACCOUNT_SERVICE, Context.ACTIVITY_SERVICE, Context.ALARM_SERVICE, Context.NOTIFICATION_SERVICE, Context.ACCESSIBILITY_SERVICE, Context.CAPTIONING_SERVICE, Context.KEYGUARD_SERVICE, Context.LOCATION_SERVICE, Context.HEALTHCONNECT_SERVICE, Context.SEARCH_SERVICE, Context.SENSOR_SERVICE, android.content.Context.SENSOR_PRIVACY_SERVICE, Context.STORAGE_SERVICE, Context.STORAGE_STATS_SERVICE, Context.WALLPAPER_SERVICE, Context.VIBRATOR_MANAGER_SERVICE, Context.VIBRATOR_SERVICE, android.content.Context.THREAD_NETWORK_SERVICE, Context.CONNECTIVITY_SERVICE, android.content.Context.PAC_PROXY_SERVICE, android.content.Context.VCN_MANAGEMENT_SERVICE, Context.IPSEC_SERVICE, Context.VPN_MANAGEMENT_SERVICE, android.content.Context.TEST_NETWORK_SERVICE, Context.NETWORK_STATS_SERVICE, Context.WIFI_SERVICE, Context.WIFI_AWARE_SERVICE, Context.WIFI_P2P_SERVICE, android.content.Context.WIFI_SCANNING_SERVICE, Context.WIFI_RTT_RANGING_SERVICE, Context.NSD_SERVICE, Context.AUDIO_SERVICE, android.content.Context.AUDIO_DEVICE_VOLUME_SERVICE, android.content.Context.AUTH_SERVICE, Context.FINGERPRINT_SERVICE, Context.BIOMETRIC_SERVICE, Context.MEDIA_ROUTER_SERVICE, Context.TELEPHONY_SERVICE, Context.TELEPHONY_SUBSCRIPTION_SERVICE, Context.CARRIER_CONFIG_SERVICE, Context.EUICC_SERVICE, Context.TELECOM_SERVICE, Context.CLIPBOARD_SERVICE, Context.INPUT_METHOD_SERVICE, Context.TEXT_SERVICES_MANAGER_SERVICE, Context.TEXT_CLASSIFICATION_SERVICE, Context.APPWIDGET_SERVICE, android.content.Context.REBOOT_READINESS_SERVICE, android.content.Context.ROLLBACK_SERVICE, Context.DROPBOX_SERVICE, Context.DEVICE_POLICY_SERVICE, Context.UI_MODE_SERVICE, Context.DOWNLOAD_SERVICE, Context.NFC_SERVICE, Context.BLUETOOTH_SERVICE, Context.USB_SERVICE, Context.LAUNCHER_APPS_SERVICE, Context.INPUT_SERVICE, Context.DISPLAY_SERVICE, Context.USER_SERVICE, Context.RESTRICTIONS_SERVICE, Context.APP_OPS_SERVICE, Context.ROLE_SERVICE, Context.CAMERA_SERVICE, Context.PRINT_SERVICE, Context.CONSUMER_IR_SERVICE, Context.TV_INTERACTIVE_APP_SERVICE, Context.TV_INPUT_SERVICE, Context.USAGE_STATS_SERVICE, Context.MEDIA_SESSION_SERVICE, Context.MEDIA_COMMUNICATION_SERVICE, Context.BATTERY_SERVICE, Context.JOB_SCHEDULER_SERVICE, Context.PERSISTENT_DATA_BLOCK_SERVICE, Context.MEDIA_PROJECTION_SERVICE, Context.MIDI_SERVICE, android.content.Context.RADIO_SERVICE, Context.HARDWARE_PROPERTIES_SERVICE, Context.SHORTCUT_SERVICE, Context.SYSTEM_HEALTH_SERVICE, Context.COMPANION_DEVICE_SERVICE, Context.VIRTUAL_DEVICE_SERVICE, Context.CROSS_PROFILE_APPS_SERVICE, android.content.Context.PERMISSION_SERVICE, android.content.Context.LIGHTS_SERVICE, Context.LOCALE_SERVICE, android.content.Context.UWB_SERVICE, Context.MEDIA_METRICS_SERVICE, Context.DISPLAY_HASH_SERVICE, Context.CREDENTIAL_SERVICE, Context.DEVICE_LOCK_SERVICE, android.content.Context.VIRTUALIZATION_SERVICE, Context.GRAMMATICAL_INFLECTION_SERVICE, Context.SECURITY_STATE_SERVICE, or Context.CONTACT_KEYS_SERVICE This value cannot be null.

Returns
`Object`	The service or `null` if the name does not exist.

getTaskId

Added in API level 1

public int getTaskId ()

Return the identifier of the task this activity is in. This identifier will remain the same for the lifetime of the activity.

Returns
`int`	Task identifier, an opaque integer.

getTitle

Added in API level 1

public final CharSequence getTitle ()

Returns
`CharSequence`

getTitleColor

Added in API level 1

public final int getTitleColor ()

Returns
`int`

getVoiceInteractor

Added in API level 23

public VoiceInteractor getVoiceInteractor ()

Retrieve the active VoiceInteractor that the user is going through to interact with this activity.

Returns
`VoiceInteractor`

getVolumeControlStream

Added in API level 1

public final int getVolumeControlStream ()

Gets the suggested audio stream whose volume should be changed by the hardware volume controls.

Returns
`int`	The suggested audio stream type whose volume should be changed by the hardware volume controls.

See also:

setVolumeControlStream(int)

getWindow

Added in API level 1

public Window getWindow ()

Retrieve the current Window for the activity. This can be used to directly access parts of the Window API that are not available through Activity/Screen.

Returns
`Window`	Window The current window, or null if the activity is not visual.

getWindowManager

Added in API level 1

public WindowManager getWindowManager ()

Retrieve the window manager for showing custom windows.

Returns
`WindowManager`

hasWindowFocus

Added in API level 3

public boolean hasWindowFocus ()

Returns true if this activity's main window currently has window focus. Note that this is not the same as the view itself having focus.

Returns
`boolean`	True if this activity's main window currently has window focus.

See also:

onWindowAttributesChanged(android.view.WindowManager.LayoutParams)

invalidateOptionsMenu

Added in API level 11

public void invalidateOptionsMenu ()

Declare that the options menu has changed, so should be recreated. The onCreateOptionsMenu(android.view.Menu) method will be called the next time it needs to be displayed.

isActivityTransitionRunning

Added in API level 26

public boolean isActivityTransitionRunning ()

Returns whether there are any activity transitions currently running on this activity. A return value of true can mean that either an enter or exit transition is running, including whether the background of the activity is animating as a part of that transition.

Returns
`boolean`	true if a transition is currently running on this activity, false otherwise.

isChangingConfigurations

Added in API level 11

public boolean isChangingConfigurations ()

Check to see whether this activity is in the process of being destroyed in order to be recreated with a new configuration. This is often used in onStop() to determine whether the state needs to be cleaned up or will be passed on to the next instance of the activity via onRetainNonConfigurationInstance().

Returns
`boolean`	If the activity is being torn down in order to be recreated with a new configuration, returns true; else returns false.

isChild

Added in API level 1
Deprecated in API level 35

public final boolean isChild ()

This method was deprecated in API level 35.
ActivityGroup is deprecated.

Whether this is a child Activity of an ActivityGroup.

Returns
`boolean`

isDestroyed

Added in API level 17

public boolean isDestroyed ()

Returns true if the final onDestroy() call has been made on the Activity, so this instance is now dead.

Returns
`boolean`

isFinishing

Added in API level 1

public boolean isFinishing ()

Check to see whether this activity is in the process of finishing, either because you called finish() on it or someone else has requested that it finished. This is often used in onPause() to determine whether the activity is simply pausing or completely finishing.

Returns
`boolean`	If the activity is finishing, returns true; else returns false.

See also:

finish()

isImmersive

Added in API level 18

public boolean isImmersive ()

Bit indicating that this activity is "immersive" and should not be interrupted by notifications if possible. This value is initially set by the manifest property android:immersive but may be changed at runtime by setImmersive(boolean).

Returns
`boolean`

See also:

isInMultiWindowMode

Added in API level 24

public boolean isInMultiWindowMode ()

Returns true if the activity is currently in multi-window mode.

Returns
`boolean`	True if the activity is in multi-window mode.

See also:

R.attr.resizeableActivity

isInPictureInPictureMode

Added in API level 24

public boolean isInPictureInPictureMode ()

Returns true if the activity is currently in picture-in-picture mode.

Returns
`boolean`	True if the activity is in picture-in-picture mode.

See also:

R.attr.supportsPictureInPicture

isLaunchedFromBubble

Added in API level 31

public boolean isLaunchedFromBubble ()

Indicates whether this activity is launched from a bubble. A bubble is a floating shortcut on the screen that expands to show an activity. If your activity can be used normally or as a bubble, you might use this method to check if the activity is bubbled to modify any behaviour that might be different between the normal activity and the bubbled activity. For example, if you normally cancel the notification associated with the activity when you open the activity, you might not want to do that when you're bubbled as that would remove the bubble.

Returns
`boolean`	`true` if the activity is launched from a bubble.

See also:

isLocalVoiceInteractionSupported

Added in API level 24

public boolean isLocalVoiceInteractionSupported ()

Queries whether the currently enabled voice interaction service supports returning a voice interactor for use by the activity. This is valid only for the duration of the activity.

Returns
`boolean`	whether the current voice interaction service supports local voice interaction

isTaskRoot

Added in API level 1

public boolean isTaskRoot ()

Return whether this activity is the root of a task. The root is the first activity in a task.

Returns
`boolean`	True if this is the root activity, else false.

isVoiceInteraction

Added in API level 23

public boolean isVoiceInteraction ()

Check whether this activity is running as part of a voice interaction with the user. If true, it should perform its interaction with the user through the VoiceInteractor returned by getVoiceInteractor().

Returns
`boolean`

isVoiceInteractionRoot

Added in API level 23

public boolean isVoiceInteractionRoot ()

Like isVoiceInteraction(), but only returns true if this is also the root of a voice interaction. That is, returns true if this activity was directly started by the voice interaction service as the initiation of a voice interaction. Otherwise, for example if it was started by another activity while under voice interaction, returns false. If the activity launchMode is singleTask, it forces the activity to launch in a new task, separate from the one that started it. Therefore, there is no longer a relationship between them, and isVoiceInteractionRoot() return false in this case.

Returns
`boolean`

managedQuery

Added in API level 1
Deprecated in API level 15

public final Cursor managedQuery (Uri uri, 
                String[] projection, 
                String selection, 
                String[] selectionArgs, 
                String sortOrder)

This method was deprecated in API level 15.
Use CursorLoader instead.

Wrapper around ContentResolver#query(android.net.Uri , String[], String, String[], String) that gives the resulting Cursor to call startManagingCursor(Cursor) so that the activity will manage its lifecycle for you. If you are targeting Build.VERSION_CODES.HONEYCOMB or later, consider instead using LoaderManager instead, available via getLoaderManager().

Warning: Do not call Cursor#close() on a cursor obtained using this method, because the activity will do that for you at the appropriate time. However, if you call stopManagingCursor(Cursor) on a cursor from a managed query, the system will not automatically close the cursor and, in that case, you must call Cursor#close().

Parameters
`uri`	`Uri`: The URI of the content provider to query.
`projection`	`String`: List of columns to return.
`selection`	`String`: SQL WHERE clause.
`selectionArgs`	`String`: The arguments to selection, if any ?s are pesent
`sortOrder`	`String`: SQL ORDER BY clause.

Returns
`Cursor`	The Cursor that was returned by query().

See also:

moveTaskToBack

Added in API level 1

public boolean moveTaskToBack (boolean nonRoot)

Move the task containing this activity to the back of the activity stack. The activity's order within the task is unchanged.

Parameters
`nonRoot`	`boolean`: If false then this only works if the activity is the root of a task; if true it will work for any activity in a task.

Returns
`boolean`	If the task was moved (or it was already at the back) true is returned, else false.

navigateUpTo

Added in API level 16

public boolean navigateUpTo (Intent upIntent)

Navigate from this activity to the activity specified by upIntent, finishing this activity in the process. If the activity indicated by upIntent already exists in the task's history, this activity and all others before the indicated activity in the history stack will be finished.

If the indicated activity does not appear in the history stack, this will finish each activity in this task until the root activity of the task is reached, resulting in an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy when an activity may be reached by a path not passing through a canonical parent activity.

This method should be used when performing up navigation from within the same task as the destination. If up navigation should cross tasks in some cases, see shouldUpRecreateTask(android.content.Intent).

Parameters
`upIntent`	`Intent`: An intent representing the target destination for up navigation

Returns
`boolean`	true if up navigation successfully reached the activity indicated by upIntent and upIntent was delivered to it. false if an instance of the indicated activity could not be found and this activity was simply finished normally.

navigateUpToFromChild

Added in API level 16
Deprecated in API level 30

public boolean navigateUpToFromChild (Activity child, 
                Intent upIntent)

This method was deprecated in API level 30.
Use navigateUpTo(android.content.Intent) instead.

This is called when a child activity of this one calls its navigateUpTo(Intent) method. The default implementation simply calls navigateUpTo(upIntent) on this activity (the parent).

Parameters
`child`	`Activity`: The activity making the call.
`upIntent`	`Intent`: An intent representing the target destination for up navigation

Returns
`boolean`	true if up navigation successfully reached the activity indicated by upIntent and upIntent was delivered to it. false if an instance of the indicated activity could not be found and this activity was simply finished normally.

onActionModeFinished

Added in API level 11

public void onActionModeFinished (ActionMode mode)

Notifies the activity that an action mode has finished. Activity subclasses overriding this method should call the superclass implementation.
If you override this method you must call through to the superclass implementation.

Parameters
`mode`	`ActionMode`: The action mode that just finished.

onActionModeStarted

Added in API level 11

public void onActionModeStarted (ActionMode mode)

Notifies the Activity that an action mode has been started. Activity subclasses overriding this method should call the superclass implementation.
If you override this method you must call through to the superclass implementation.

Parameters
`mode`	`ActionMode`: The new action mode.

onActivityReenter

Added in API level 21

public void onActivityReenter (int resultCode, 
                Intent data)

Called when an activity you launched with an activity transition exposes this Activity through a returning activity transition, giving you the resultCode and any additional data from it. This method will only be called if the activity set a result code other than RESULT_CANCELED and it supports activity transitions with Window#FEATURE_ACTIVITY_TRANSITIONS.

The purpose of this function is to let the called Activity send a hint about its state so that this underlying Activity can prepare to be exposed. A call to this method does not guarantee that the called Activity has or will be exiting soon. It only indicates that it will expose this Activity's Window and it has some data to pass to prepare it.

Parameters
`resultCode`	`int`: The integer result code returned by the child activity through its setResult().
`data`	`Intent`: An Intent, which can return result data to the caller (various data can be attached to Intent "extras").

onActivityResult

Added in API level 35

public void onActivityResult (int requestCode, 
                int resultCode, 
                Intent data, 
                ComponentCaller caller)

Same as onActivityResult(int, int, android.content.Intent), but with an extra parameter for the ComponentCaller instance associated with the app that sent the result.

If you want to retrieve the caller without overriding this method, call getCurrentCaller() inside your existing onActivityResult(int, int, android.content.Intent).

Note that you should only override one onActivityResult(int, int, Intent) method.

Parameters
`requestCode`	`int`: The integer request code originally supplied to startActivityForResult(), allowing you to identify who this result came from.
`resultCode`	`int`: The integer result code returned by the child activity through its setResult().
`data`	`Intent`: An Intent, which can return result data to the caller (various data can be attached to Intent "extras"). This value may be `null`.
`caller`	`ComponentCaller`: The `ComponentCaller` instance associated with the app that sent the intent. This value cannot be `null`.

onAttachFragment

Added in API level 11
Deprecated in API level 28

public void onAttachFragment (Fragment fragment)

This method was deprecated in API level 28.
Use FragmentActivity.onAttachFragment(androidx.fragment.app.Fragment)

Called when a Fragment is being attached to this activity, immediately after the call to its Fragment.onAttach() method and before Fragment.onCreate().

Parameters
`fragment`	`Fragment`

onAttachedToWindow

Added in API level 5

public void onAttachedToWindow ()

Called when the main window associated with the activity has been attached to the window manager. See View.onAttachedToWindow() for more information.

See also:

View.onAttachedToWindow()

onBackPressed

Added in API level 5
Deprecated in API level 33

public void onBackPressed ()

This method was deprecated in API level 33.
Use OnBackInvokedCallback or androidx.activity.OnBackPressedCallback to handle back navigation instead.

Starting from Android 13 (API level 33), back event handling is moving to an ahead-of-time model and Activity#onBackPressed() and KeyEvent#KEYCODE_BACK should not be used to handle back events (back gesture or back button click). Instead, an OnBackInvokedCallback should be registered using Activity#getOnBackInvokedDispatcher() .registerOnBackInvokedCallback(priority, callback).

Called when the activity has detected the user's press of the back key. The default implementation depends on the platform version:

On platform versions prior to Build.VERSION_CODES.S, it finishes the current activity, but you can override this to do whatever you want.
Starting with platform version Build.VERSION_CODES.S, for activities that are the root activity of the task and also declare an IntentFilter with Intent#ACTION_MAIN and Intent#CATEGORY_LAUNCHER in the manifest, the current activity and its task will be moved to the back of the activity stack instead of being finished. Other activities will simply be finished.
If you target version Build.VERSION_CODES.S and override this method, we strongly recommend to call through to the superclass implementation after you finish handling navigation within the app.
If you target version Build.VERSION_CODES.TIRAMISU or later, you should not use this method but register an OnBackInvokedCallback on an OnBackInvokedDispatcher that you can retrieve using getOnBackInvokedDispatcher(). You should also set android:enableOnBackInvokedCallback="true" in the application manifest.
Alternatively, you can use androidx.activity.ComponentActivity#getOnBackPressedDispatcher() for backward compatibility.

See also:

moveTaskToBack(boolean)

onConfigurationChanged

Added in API level 1

public void onConfigurationChanged (Configuration newConfig)

Called by the system when the device configuration changes while your activity is running. Note that this will only be called if you have selected configurations you would like to handle with the R.attr.configChanges attribute in your manifest. If any configuration change occurs that is not selected to be reported by that attribute, then instead of reporting it the system will stop and restart the activity (to have it launched with the new configuration). The only exception is if a size-based configuration is not large enough to be considered significant, in which case the system will not recreate the activity and will instead call this method. For details on this see the documentation on size-based config change.

At the time that this function has been called, your Resources object will have been updated to return resource values matching the new configuration.

Parameters
`newConfig`	`Configuration`: The new device configuration. This value cannot be `null`.

onContentChanged

Added in API level 1

public void onContentChanged ()

This hook is called whenever the content view of the screen changes (due to a call to Window.setContentView or Window.addContentView).

onContextItemSelected

Added in API level 1

public boolean onContextItemSelected (MenuItem item)

This hook is called whenever an item in a context menu is selected. The default implementation simply returns false to have the normal processing happen (calling the item's Runnable or sending a message to its Handler as appropriate). You can use this method for any items for which you would like to do processing without those other facilities.

Use MenuItem#getMenuInfo() to get extra information set by the View that added this menu item.

Derived classes should call through to the base class for it to perform the default menu handling.

Parameters
`item`	`MenuItem`: The context menu item that was selected. This value cannot be `null`.

Returns
`boolean`	boolean Return false to allow normal context menu processing to proceed, true to consume it here.

Added in API level 1

public void onContextMenuClosed (Menu menu)

This hook is called whenever the context menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).

Parameters
`menu`	`Menu`: The context menu that is being closed. This value cannot be `null`.

onCreate

Added in API level 21

public void onCreate (Bundle savedInstanceState, 
                PersistableBundle persistentState)

Same as onCreate(android.os.Bundle) but called for those activities created with the attribute R.attr.persistableMode set to persistAcrossReboots.

Parameters
`savedInstanceState`	`Bundle`: if the activity is being re-initialized after previously being shut down then this Bundle contains the data it most recently supplied in `onSaveInstanceState(Bundle)`. *Note: Otherwise it is null.*
`persistentState`	`PersistableBundle`: if the activity is being re-initialized after previously being shut down or powered off then this Bundle contains the data it most recently supplied to outPersistentState in `onSaveInstanceState(Bundle)`. *Note: Otherwise it is null.*

See also:

onCreateContextMenu

Added in API level 1

public void onCreateContextMenu (ContextMenu menu, 
                View v, 
                ContextMenu.ContextMenuInfo menuInfo)

Called when a context menu for the view is about to be shown. Unlike onCreateOptionsMenu(android.view.Menu), this will be called every time the context menu is about to be shown and should be populated for the view (or item inside the view for AdapterView subclasses, this can be found in the menuInfo)).

Use onContextItemSelected(android.view.MenuItem) to know when an item has been selected.

It is not safe to hold onto the context menu after this method returns.

Parameters
`menu`	`ContextMenu`: The context menu that is being built
`v`	`View`: The view for which the context menu is being built
`menuInfo`	`ContextMenu.ContextMenuInfo`: Extra information about the item for which the context menu should be shown. This information will vary depending on the class of v.

onCreateDescription

Added in API level 1

public CharSequence onCreateDescription ()

Generate a new description for this activity. This method is called before stopping the activity and can, if desired, return some textual description of its current state to be displayed to the user.

The default implementation returns null, which will cause you to inherit the description from the previous activity. If all activities return null, generally the label of the top activity will be used as the description.

Returns
`CharSequence`	A description of what the user is doing. It should be short and sweet (only a few words).

See also:

onCreateNavigateUpTaskStack

Added in API level 16

public void onCreateNavigateUpTaskStack (TaskStackBuilder builder)

Define the synthetic task stack that will be generated during Up navigation from a different task.

The default implementation of this method adds the parent chain of this activity as specified in the manifest to the supplied TaskStackBuilder. Applications may choose to override this method to construct the desired task stack in a different way.

This method will be invoked by the default implementation of onNavigateUp() if shouldUpRecreateTask(android.content.Intent) returns true when supplied with the intent returned by getParentActivityIntent().

Applications that wish to supply extra Intent parameters to the parent stack defined by the manifest should override onPrepareNavigateUpTaskStack(android.app.TaskStackBuilder).

Parameters
`builder`	`TaskStackBuilder`: An empty TaskStackBuilder - the application should add intents representing the desired task stack

Added in API level 1

public boolean onCreateOptionsMenu (Menu menu)

Initialize the contents of the Activity's standard options menu. You should place your menu items in to menu.

This is only called once, the first time the options menu is displayed. To update the menu every time it is displayed, see onPrepareOptionsMenu(Menu).

The default implementation populates the menu with standard system menu items. These are placed in the Menu#CATEGORY_SYSTEM group so that they will be correctly ordered with application-defined menu items. Deriving classes should always call through to the base implementation.

You can safely hold on to menu (and any items created from it), making modifications to it as desired, until the next time onCreateOptionsMenu() is called.

When you add items to the menu, you can implement the Activity's onOptionsItemSelected(MenuItem) method to handle them there.

Parameters
`menu`	`Menu`: The options menu in which you place your items.

Returns
`boolean`	You must return true for the menu to be displayed; if you return false it will not be shown.

See also:

Added in API level 1

public boolean onCreatePanelMenu (int featureId, 
                Menu menu)

Default implementation of Window.Callback.onCreatePanelMenu(int, Menu) for activities. This calls through to the new onCreateOptionsMenu(Menu) method for the Window.FEATURE_OPTIONS_PANEL panel, so that subclasses of Activity don't need to deal with feature codes.

Parameters
`featureId`	`int`: The panel being created.
`menu`	`Menu`: This value cannot be `null`.

Returns
`boolean`	boolean You must return true for the panel to be displayed; if you return false it will not be shown.

onCreatePanelView

Added in API level 1

public View onCreatePanelView (int featureId)

Default implementation of Window.Callback.onCreatePanelView(int) for activities. This simply returns null so that all panel sub-windows will have the default menu behavior.

Parameters
`featureId`	`int`: Which panel is being created.

Returns
`View`	view The top-level view to place in the panel.

onCreateThumbnail

Added in API level 1
Deprecated in API level 28

public boolean onCreateThumbnail (Bitmap outBitmap, 
                Canvas canvas)

This method was deprecated in API level 28.
Method doesn't do anything and will be removed in the future.

Parameters
`outBitmap`	`Bitmap`
`canvas`	`Canvas`

Returns
`boolean`

onCreateView

Added in API level 11

public View onCreateView (View parent, 
                String name, 
                Context context, 
                AttributeSet attrs)

Standard implementation of LayoutInflater.Factory2.onCreateView(View, String, Context, AttributeSet) used when inflating with the LayoutInflater returned by Context.getSystemService(Class). This implementation handles tags to embed fragments inside of the activity.

Parameters
`parent`	`View`: This value may be `null`.
`name`	`String`: This value cannot be `null`.
`context`	`Context`: This value cannot be `null`.
`attrs`	`AttributeSet`: This value cannot be `null`.

Returns
`View`	This value may be `null`.

See also:

onCreateView

Added in API level 1

public View onCreateView (String name, 
                Context context, 
                AttributeSet attrs)

Standard implementation of LayoutInflater.Factory.onCreateView(String, Context, AttributeSet) used when inflating with the LayoutInflater returned by Context.getSystemService(Class). This implementation does nothing and is for pre-Build.VERSION_CODES.HONEYCOMB apps. Newer apps should use onCreateView(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet).

Parameters
`name`	`String`: This value cannot be `null`.
`context`	`Context`: This value cannot be `null`.
`attrs`	`AttributeSet`: This value cannot be `null`.

Returns
`View`	This value may be `null`.

See also:

onDetachedFromWindow

Added in API level 5

public void onDetachedFromWindow ()

Called when the main window associated with the activity has been detached from the window manager. See View.onDetachedFromWindow() for more information.

See also:

View.onDetachedFromWindow()

onEnterAnimationComplete

Added in API level 21

public void onEnterAnimationComplete ()

Activities cannot draw during the period that their windows are animating in. In order to know when it is safe to begin drawing they can override this method which will be called when the entering animation has completed.

onGenericMotionEvent

Added in API level 12

public boolean onGenericMotionEvent (MotionEvent event)

Called when a generic motion event was not handled by any of the views inside of the activity.

Generic motion events describe joystick movements, hover events from mouse or stylus devices, trackpad touches, scroll wheel movements and other motion events not handled by onTouchEvent(android.view.MotionEvent) or onTrackballEvent(android.view.MotionEvent). The source of the motion event specifies the class of input that was received. Implementations of this method must examine the bits in the source before processing the event.

Generic motion events with source class InputDevice.SOURCE_CLASS_POINTER are delivered to the view under the pointer. All other generic motion events are delivered to the focused view.

See View#onGenericMotionEvent(MotionEvent) for an example of how to handle this event.

Parameters
`event`	`MotionEvent`: The generic motion event being processed.

Returns
`boolean`	Return true if you have consumed the event, false if you haven't. The default implementation always returns false.

onGetDirectActions

Added in API level 29

public void onGetDirectActions (CancellationSignal cancellationSignal, 
                Consumer<List<DirectAction>> callback)

Returns the list of direct actions supported by the app.

You should return the list of actions that could be executed in the current context, which is in the current state of the app. If the actions that could be executed by the app changes you should report that via calling VoiceInteractor#notifyDirectActionsChanged().

To get the voice interactor you need to call getVoiceInteractor() which would return non null only if there is an ongoing voice interaction session. You can also detect when the voice interactor is no longer valid because the voice interaction session that is backing is finished by calling VoiceInteractor#registerOnDestroyedCallback(Executor, Runnable).

This method will be called only after onStart() and before onStop().

You should pass to the callback the currently supported direct actions which cannot be null or contain null elements.

You should return the action list as soon as possible to ensure the consumer, for example the assistant, is as responsive as possible which would improve user experience of your app.

Parameters
`cancellationSignal`	`CancellationSignal`: A signal to cancel the operation in progress. This value cannot be `null`.
`callback`	`Consumer`: The callback to send the action list. The actions list cannot contain `null` elements. You can call this on any thread.

onKeyDown

Added in API level 1

public boolean onKeyDown (int keyCode, 
                KeyEvent event)

Called when a key was pressed down and not handled by any of the views inside of the activity. So, for example, key presses while the cursor is inside a TextView will not trigger the event (unless it is a navigation to another object) because TextView handles its own key presses.

If the focused view didn't want this event, this method is called.

The default implementation takes care of KeyEvent#KEYCODE_BACK by calling onBackPressed(), though the behavior varies based on the application compatibility mode: for Build.VERSION_CODES.ECLAIR or later applications, it will set up the dispatch to call onKeyUp(int, KeyEvent) where the action will be performed; for earlier applications, it will perform the action immediately in on-down, as those versions of the platform behaved. This implementation will also take care of KeyEvent#KEYCODE_ESCAPE by finishing the activity if it would be closed by touching outside of it.

Other additional default key handling may be performed if configured with setDefaultKeyMode(int).

Parameters
`keyCode`	`int`: The value in event.getKeyCode().
`event`	`KeyEvent`: Description of the key event.

Returns
`boolean`	Return `true` to prevent this event from being propagated further, or `false` to indicate that you have not handled this event and it should continue to be propagated.

See also:

onKeyLongPress

Added in API level 5

public boolean onKeyLongPress (int keyCode, 
                KeyEvent event)

Default implementation of KeyEvent.Callback.onKeyLongPress(): always returns false (doesn't handle the event). To receive this callback, you must return true from onKeyDown for the current event stream.

Parameters
`keyCode`	`int`: The value in event.getKeyCode().
`event`	`KeyEvent`: Description of the key event.

Returns
`boolean`	If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

See also:

KeyEvent.Callback.onKeyLongPress(int, KeyEvent)

onKeyMultiple

Added in API level 1

public boolean onKeyMultiple (int keyCode, 
                int repeatCount, 
                KeyEvent event)

Default implementation of KeyEvent.Callback.onKeyMultiple(): always returns false (doesn't handle the event).

Parameters
`keyCode`	`int`: The value in event.getKeyCode().
`repeatCount`	`int`: Number of pairs as returned by event.getRepeatCount().
`event`	`KeyEvent`: Description of the key event.

Returns
`boolean`	If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

onKeyShortcut

Added in API level 11

public boolean onKeyShortcut (int keyCode, 
                KeyEvent event)

Called when a key shortcut event is not handled by any of the views in the Activity. Override this method to implement global key shortcuts for the Activity. Key shortcuts can also be implemented by setting the shortcut property of menu items.

Parameters
`keyCode`	`int`: The value in event.getKeyCode().
`event`	`KeyEvent`: Description of the key event.

Returns
`boolean`	True if the key shortcut was handled.

onKeyUp

Added in API level 1

public boolean onKeyUp (int keyCode, 
                KeyEvent event)

Called when a key was released and not handled by any of the views inside of the activity. So, for example, key presses while the cursor is inside a TextView will not trigger the event (unless it is a navigation to another object) because TextView handles its own key presses.

The default implementation handles KEYCODE_BACK to stop the activity and go back.

Parameters
`keyCode`	`int`: The value in event.getKeyCode().
`event`	`KeyEvent`: Description of the key event.

Returns
`boolean`	Return `true` to prevent this event from being propagated further, or `false` to indicate that you have not handled this event and it should continue to be propagated.

See also:

onLocalVoiceInteractionStarted

Added in API level 24

public void onLocalVoiceInteractionStarted ()

Callback to indicate that startLocalVoiceInteraction(android.os.Bundle) has resulted in a voice interaction session being started. You can now retrieve a voice interactor using getVoiceInteractor().

onLocalVoiceInteractionStopped

Added in API level 24

public void onLocalVoiceInteractionStopped ()

Callback to indicate that the local voice interaction has stopped either because it was requested through a call to stopLocalVoiceInteraction() or because it was canceled by the user. The previously acquired VoiceInteractor is no longer valid after this.

onLowMemory

Added in API level 1

public void onLowMemory ()

This is called when the overall system is running low on memory, and actively running processes should trim their memory usage. While the exact point at which this will be called is not defined, generally it will happen when all background process have been killed. That is, before reaching the point of killing processes hosting service and foreground UI that we would like to avoid killing.

onMenuItemSelected

Added in API level 1

public boolean onMenuItemSelected (int featureId, 
                MenuItem item)

Default implementation of Window.Callback.onMenuItemSelected(int, MenuItem) for activities. This calls through to the new onOptionsItemSelected(MenuItem) method for the Window.FEATURE_OPTIONS_PANEL panel, so that subclasses of Activity don't need to deal with feature codes.

Parameters
`featureId`	`int`: The panel that the menu is in.
`item`	`MenuItem`: This value cannot be `null`.

Returns
`boolean`	boolean Return true to finish processing of selection, or false to perform the normal menu handling (calling its Runnable or sending a Message to its target Handler).

Added in API level 1

public boolean onMenuOpened (int featureId, 
                Menu menu)

Called when a panel's menu is opened by the user. This may also be called when the menu is changing from one type to another (for example, from the icon menu to the expanded menu).

Parameters
`featureId`	`int`: The panel that the menu is in.
`menu`	`Menu`: This value cannot be `null`.

Returns
`boolean`	The default implementation returns true.

onMultiWindowModeChanged

Added in API level 24
Deprecated in API level 26

public void onMultiWindowModeChanged (boolean isInMultiWindowMode)

This method was deprecated in API level 26.
Use onMultiWindowModeChanged(boolean, android.content.res.Configuration) instead.

Called by the system when the activity changes from fullscreen mode to multi-window mode and visa-versa.

Parameters
`isInMultiWindowMode`	`boolean`: True if the activity is in multi-window mode.

See also:

R.attr.resizeableActivity

onMultiWindowModeChanged

Added in API level 26

public void onMultiWindowModeChanged (boolean isInMultiWindowMode, 
                Configuration newConfig)

Called by the system when the activity changes from fullscreen mode to multi-window mode and visa-versa. This method provides the same configuration that will be sent in the following onConfigurationChanged(android.content.res.Configuration) call after the activity enters this mode.

Parameters
`isInMultiWindowMode`	`boolean`: True if the activity is in multi-window mode.
`newConfig`	`Configuration`: The new configuration of the activity with the state .

See also:

R.attr.resizeableActivity

onNavigateUp

Added in API level 16

public boolean onNavigateUp ()

This method is called whenever the user chooses to navigate Up within your application's activity hierarchy from the action bar.

If the attribute parentActivityName was specified in the manifest for this activity or an activity-alias to it, default Up navigation will be handled automatically. If any activity along the parent chain requires extra Intent arguments, the Activity subclass should override the method onPrepareNavigateUpTaskStack(android.app.TaskStackBuilder) to supply those arguments.

See Tasks and Back Stack from the developer guide and Navigation from the design guide for more information about navigating within your app.

See the TaskStackBuilder class and the Activity methods getParentActivityIntent(), shouldUpRecreateTask(android.content.Intent), and navigateUpTo(android.content.Intent) for help implementing custom Up navigation. The AppNavigation sample application in the Android SDK is also available for reference.

Returns
`boolean`	true if Up navigation completed successfully and this Activity was finished, false otherwise.

onNavigateUpFromChild

Added in API level 16
Deprecated in API level 30

public boolean onNavigateUpFromChild (Activity child)

This method was deprecated in API level 30.
Use onNavigateUp() instead.

This is called when a child activity of this one attempts to navigate up. The default implementation simply calls onNavigateUp() on this activity (the parent).

Parameters
`child`	`Activity`: The activity making the call.

Returns
`boolean`

onNewIntent

Added in API level 35

public void onNewIntent (Intent intent, 
                ComponentCaller caller)

Same as onNewIntent(android.content.Intent), but with an extra parameter for the ComponentCaller instance associated with the app that sent the intent.

If you want to retrieve the caller without overriding this method, call getCurrentCaller() inside your existing onNewIntent(android.content.Intent).

Note that you should only override one onNewIntent(Intent) method.

Parameters
`intent`	`Intent`: The new intent that was used to start the activity This value cannot be `null`.
`caller`	`ComponentCaller`: The `ComponentCaller` instance associated with the app that sent the intent This value cannot be `null`.

See also:

onOptionsItemSelected

Added in API level 1

public boolean onOptionsItemSelected (MenuItem item)

This hook is called whenever an item in your options menu is selected. The default implementation simply returns false to have the normal processing happen (calling the item's Runnable or sending a message to its Handler as appropriate). You can use this method for any items for which you would like to do processing without those other facilities.

Derived classes should call through to the base class for it to perform the default menu handling.

Parameters
`item`	`MenuItem`: The menu item that was selected. This value cannot be `null`.

Returns
`boolean`	boolean Return false to allow normal menu processing to proceed, true to consume it here.

See also:

onCreateOptionsMenu(Menu)

Added in API level 1

public void onOptionsMenuClosed (Menu menu)

This hook is called whenever the options menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).

Parameters
`menu`	`Menu`: The options menu as last shown or first initialized by onCreateOptionsMenu().

Added in API level 1

public void onPanelClosed (int featureId, 
                Menu menu)

Default implementation of Window.Callback.onPanelClosed(int, Menu) for activities. This calls through to onOptionsMenuClosed(android.view.Menu) method for the Window.FEATURE_OPTIONS_PANEL panel, so that subclasses of Activity don't need to deal with feature codes. For context menus (Window#FEATURE_CONTEXT_MENU), the onContextMenuClosed(android.view.Menu) will be called.

Parameters
`featureId`	`int`: The panel that is being displayed.
`menu`	`Menu`: This value cannot be `null`.

onPerformDirectAction

Added in API level 29

public void onPerformDirectAction (String actionId, 
                Bundle arguments, 
                CancellationSignal cancellationSignal, 
                Consumer<Bundle> resultListener)

This is called to perform an action previously defined by the app. Apps also have access to getVoiceInteractor() to follow up on the action.

Parameters
`actionId`	`String`: The ID for the action you previously reported via `onGetDirectActions(android.os.CancellationSignal, java.util.function.Consumer)`. This value cannot be `null`.
`arguments`	`Bundle`: Any additional arguments provided by the caller that are specific to the given action. This value cannot be `null`.
`cancellationSignal`	`CancellationSignal`: A signal to cancel the operation in progress. This value cannot be `null`.
`resultListener`	`Consumer`: The callback to provide the result back to the caller. You can call this on any thread. The result bundle is action specific. This value cannot be `null`.

See also:

onGetDirectActions(CancellationSignal, Consumer)

onPictureInPictureModeChanged

Added in API level 26

public void onPictureInPictureModeChanged (boolean isInPictureInPictureMode, 
                Configuration newConfig)

Called by the system when the activity changes to and from picture-in-picture mode. This method provides the same configuration that will be sent in the following onConfigurationChanged(android.content.res.Configuration) call after the activity enters this mode.

Parameters
`isInPictureInPictureMode`	`boolean`: True if the activity is in picture-in-picture mode.
`newConfig`	`Configuration`: The new configuration of the activity with the state .

See also:

R.attr.supportsPictureInPicture

onPictureInPictureModeChanged

Added in API level 24
Deprecated in API level 26

public void onPictureInPictureModeChanged (boolean isInPictureInPictureMode)

This method was deprecated in API level 26.
Use onPictureInPictureModeChanged(boolean, android.content.res.Configuration) instead.

Called by the system when the activity changes to and from picture-in-picture mode.

Parameters
`isInPictureInPictureMode`	`boolean`: True if the activity is in picture-in-picture mode.

See also:

R.attr.supportsPictureInPicture

onPictureInPictureRequested

Added in API level 30

public boolean onPictureInPictureRequested ()

This method is called by the system in various cases where picture in picture mode should be entered if supported.

It is up to the app developer to choose whether to call enterPictureInPictureMode(android.app.PictureInPictureParams) at this time. For example, the system will call this method when the activity is being put into the background, so the app developer might want to switch an activity into PIP mode instead.

Returns
`boolean`	`true` if the activity received this callback regardless of if it acts on it or not. If `false`, the framework will assume the app hasn't been updated to leverage this callback and will in turn send a legacy callback of `onUserLeaveHint()` for the app to enter picture-in-picture mode.

onPictureInPictureUiStateChanged

Added in API level 31

public void onPictureInPictureUiStateChanged (PictureInPictureUiState pipState)

Called by the system when the activity is in PiP and has state changes. Compare to onPictureInPictureModeChanged(boolean, android.content.res.Configuration), which is only called when PiP mode changes (meaning, enters or exits PiP), this can be called at any time while the activity is in PiP mode. Therefore, all invocation can only happen after onPictureInPictureModeChanged(boolean, android.content.res.Configuration) is called with true, and before onPictureInPictureModeChanged(boolean, android.content.res.Configuration) is called with false. You would not need to worry about cases where this is called and the activity is not in Picture-In-Picture mode. For managing cases where the activity enters/exits Picture-in-Picture (e.g. resources clean-up on exit), use onPictureInPictureModeChanged(boolean, android.content.res.Configuration). The default state is everything declared in PictureInPictureUiState is false, such as PictureInPictureUiState#isStashed().

Parameters
`pipState`	`PictureInPictureUiState`: the new Picture-in-Picture state. This value cannot be `null`.

onPostCreate

Added in API level 21

public void onPostCreate (Bundle savedInstanceState, 
                PersistableBundle persistentState)

This is the same as onPostCreate(android.os.Bundle) but is called for activities created with the attribute R.attr.persistableMode set to persistAcrossReboots.

Parameters
`savedInstanceState`	`Bundle`: The data most recently supplied in `onSaveInstanceState(Bundle)` This value may be `null`.
`persistentState`	`PersistableBundle`: The data coming from the PersistableBundle first saved in `onSaveInstanceState(android.os.Bundle, android.os.PersistableBundle)`. This value may be `null`.

See also:

onCreate(Bundle)

onPrepareNavigateUpTaskStack

Added in API level 16

public void onPrepareNavigateUpTaskStack (TaskStackBuilder builder)

Prepare the synthetic task stack that will be generated during Up navigation from a different task.

This method receives the TaskStackBuilder with the constructed series of Intents as generated by onCreateNavigateUpTaskStack(android.app.TaskStackBuilder). If any extra data should be added to these intents before launching the new task, the application should override this method and add that data here.

Parameters
`builder`	`TaskStackBuilder`: A TaskStackBuilder that has been populated with Intents by onCreateNavigateUpTaskStack.

Added in API level 1

public boolean onPrepareOptionsMenu (Menu menu)

Prepare the Screen's standard options menu to be displayed. This is called right before the menu is shown, every time it is shown. You can use this method to efficiently enable/disable items or otherwise dynamically modify the contents.

The default implementation updates the system menu items based on the activity's state. Deriving classes should always call through to the base class implementation.

Parameters
`menu`	`Menu`: The options menu as last shown or first initialized by onCreateOptionsMenu().

Returns
`boolean`	You must return true for the menu to be displayed; if you return false it will not be shown.

See also:

onCreateOptionsMenu(Menu)

Added in API level 1

public boolean onPreparePanel (int featureId, 
                View view, 
                Menu menu)

Default implementation of Window.Callback.onPreparePanel(int, View, Menu) for activities. This calls through to the new onPrepareOptionsMenu(Menu) method for the Window.FEATURE_OPTIONS_PANEL panel, so that subclasses of Activity don't need to deal with feature codes.

Parameters
`featureId`	`int`: The panel that is being displayed.
`view`	`View`: This value may be `null`.
`menu`	`Menu`: This value cannot be `null`.

Returns
`boolean`	boolean You must return true for the panel to be displayed; if you return false it will not be shown.

onProvideAssistContent

Added in API level 23

public void onProvideAssistContent (AssistContent outContent)

This is called when the user is requesting an assist, to provide references to content related to the current activity. Before being called, the outContent Intent is filled with the base Intent of the activity (the Intent returned by getIntent()). The Intent's extras are stripped of any types that are not valid for PersistableBundle or non-framework Parcelables, and the flags Intent#FLAG_GRANT_WRITE_URI_PERMISSION and Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION are cleared from the Intent.

Custom implementation may adjust the content intent to better reflect the top-level context of the activity, and fill in its ClipData with additional content of interest that the user is currently viewing. For example, an image gallery application that has launched in to an activity allowing the user to swipe through pictures should modify the intent to reference the current image they are looking it; such an application when showing a list of pictures should add a ClipData that has references to all of the pictures currently visible on screen.

Parameters
`outContent`	`AssistContent`: The assist content to return.

onProvideAssistData

Added in API level 18

public void onProvideAssistData (Bundle data)

This is called when the user is requesting an assist, to build a full Intent#ACTION_ASSIST Intent with all of the context of the current application. You can override this method to place into the bundle anything you would like to appear in the Intent#EXTRA_ASSIST_CONTEXT part of the assist Intent.

This function will be called after any global assist callbacks that had been registered with Application.registerOnProvideAssistDataListener.

Parameters
`data`	`Bundle`

Added in API level 24

public void onProvideKeyboardShortcuts (List<KeyboardShortcutGroup> data, 
                Menu menu, 
                int deviceId)

Called when Keyboard Shortcuts are requested for the current window.

Parameters
`data`	`List`: The data list to populate with shortcuts.
`menu`	`Menu`: The current menu, which may be null.
`deviceId`	`int`: The id for the connected device the shortcuts should be provided for.

onProvideReferrer

Added in API level 23

public Uri onProvideReferrer ()

Override to generate the desired referrer for the content currently being shown by the app. The default implementation returns null, meaning the referrer will simply be the android-app: of the package name of this activity. Return a non-null Uri to have that supplied as the Intent#EXTRA_REFERRER of any activities started from it.

Returns
`Uri`

onRequestPermissionsResult

Added in API level 23

public void onRequestPermissionsResult (int requestCode, 
                String[] permissions, 
                int[] grantResults)

Callback for the result from requesting permissions. This method is invoked for every call on requestPermissions(String, int)

Note: It is possible that the permissions request interaction with the user is interrupted. In this case you will receive empty permissions and results arrays which should be treated as a cancellation.

Parameters
`requestCode`	`int`: The request code passed in `requestPermissions(String, int)`.
`permissions`	`String`: The requested permissions. Never null.
`grantResults`	`int`: The grant results for the corresponding permissions which is either `PackageManager.PERMISSION_GRANTED` or `PackageManager.PERMISSION_DENIED`. Never null.

See also:

requestPermissions(String, int)

onRequestPermissionsResult

Added in API level 35

public void onRequestPermissionsResult (int requestCode, 
                String[] permissions, 
                int[] grantResults, 
                int deviceId)

Callback for the result from requesting permissions. This method is invoked for every call on requestPermissions(String, int).

Parameters
`requestCode`	`int`: The request code passed in `requestPermissions(String, int)`.
`permissions`	`String`: The requested permissions. Never null.
`grantResults`	`int`: The grant results for the corresponding permissions which is either `PackageManager.PERMISSION_GRANTED` or `PackageManager.PERMISSION_DENIED`. Never null.
`deviceId`	`int`: The deviceId for which permissions were requested. The primary/physical device is assigned `Context#DEVICE_ID_DEFAULT`, and virtual devices are assigned unique device Ids.

See also:

requestPermissions(String, int)

onRestoreInstanceState

Added in API level 21

public void onRestoreInstanceState (Bundle savedInstanceState, 
                PersistableBundle persistentState)

This is the same as onRestoreInstanceState(android.os.Bundle) but is called for activities created with the attribute R.attr.persistableMode set to persistAcrossReboots. The PersistableBundle passed came from the restored PersistableBundle first saved in onSaveInstanceState(android.os.Bundle, android.os.PersistableBundle).

This method is called between onStart() and onPostCreate(Bundle).

If this method is called onRestoreInstanceState(android.os.Bundle) will not be called.

At least one of savedInstanceState or persistentState will not be null.

Parameters
`savedInstanceState`	`Bundle`: the data most recently supplied in `onSaveInstanceState(Bundle)` or null.
`persistentState`	`PersistableBundle`: the data most recently supplied in `onSaveInstanceState(Bundle)` or null.

See also:

onRetainNonConfigurationInstance

Added in API level 1

public Object onRetainNonConfigurationInstance ()

Called by the system, as part of destroying an activity due to a configuration change, when it is known that a new instance will immediately be created for the new configuration. You can return any object you like here, including the activity instance itself, which can later be retrieved by calling getLastNonConfigurationInstance() in the new activity instance. If you are targeting Build.VERSION_CODES.HONEYCOMB or later, consider instead using a Fragment with Fragment.setRetainInstance(boolean.

This function is called purely as an optimization, and you must not rely on it being called. When it is called, a number of guarantees will be made to help optimize configuration switching:

The function will be called between onStop() and onDestroy().
A new instance of the activity will always be immediately created after this one's onDestroy() is called. In particular, no messages will be dispatched during this time (when the returned object does not have an activity to be associated with).
The object you return here will always be available from the getLastNonConfigurationInstance() method of the following activity instance as described there.

These guarantees are designed so that an activity can use this API to propagate extensive state from the old to new activity instance, from loaded bitmaps, to network connections, to evenly actively running threads. Note that you should not propagate any data that may change based on the configuration, including any data loaded from resources such as strings, layouts, or drawables.

The guarantee of no message handling during the switch to the next activity simplifies use with active objects. For example if your retained state is an AsyncTask you are guaranteed that its call back functions (like AsyncTask.onPostExecute(Result)) will not be called from the call here until you execute the next instance's onCreate(android.os.Bundle). (Note however that there is of course no such guarantee for AsyncTask.doInBackground(Params) since that is running in a separate thread.)

Note: For most cases you should use the Fragment API Fragment#setRetainInstance(boolean) instead; this is also available on older platforms through the Android support libraries.

Returns
`Object`	any Object holding the desired state to propagate to the next activity instance

onSaveInstanceState

Added in API level 21

public void onSaveInstanceState (Bundle outState, 
                PersistableBundle outPersistentState)

This is the same as onSaveInstanceState(Bundle) but is called for activities created with the attribute R.attr.persistableMode set to persistAcrossReboots. The PersistableBundle passed in will be saved and presented in onCreate(android.os.Bundle, android.os.PersistableBundle) the first time that this activity is restarted following the next device reboot.

Parameters
`outState`	`Bundle`: Bundle in which to place your saved state. This value cannot be `null`.
`outPersistentState`	`PersistableBundle`: State which will be saved across reboots. This value cannot be `null`.

See also:

onSearchRequested

Added in API level 23

public boolean onSearchRequested (SearchEvent searchEvent)

This hook is called when the user signals the desire to start a search.

You can use this function as a simple way to launch the search UI, in response to a menu item, search button, or other widgets within your activity. Unless overridden, calling this function is the same as calling startSearch(null,false,null,false), which launches search for the current activity as specified in its manifest, see SearchManager.

You can override this function to force global search, e.g. in response to a dedicated search key, or to block search entirely (by simply returning false).

Note: when running in a Configuration#UI_MODE_TYPE_TELEVISION or Configuration#UI_MODE_TYPE_WATCH, the default implementation changes to simply return false and you must supply your own custom implementation if you want to support search.

Parameters
`searchEvent`	`SearchEvent`: The `SearchEvent` that signaled this search. This value may be `null`.

Returns
`boolean`	Returns `true` if search launched, and `false` if the activity does not respond to search. The default implementation always returns `true`, except when in `Configuration#UI_MODE_TYPE_TELEVISION` mode where it returns false.

See also:

SearchManager

onSearchRequested

Added in API level 1

public boolean onSearchRequested ()

Called when the user signals the desire to start a search.

Returns
`boolean`	true if search launched, false if activity refuses (blocks)

See also:

onSearchRequested(SearchEvent)

onStateNotSaved

Added in API level 23
Deprecated in API level 29

public void onStateNotSaved ()

This method was deprecated in API level 29.
starting with Build.VERSION_CODES.P onSaveInstanceState is called after onStop(), so this hint isn't accurate anymore: you should consider your state not saved in between onStart and onStop callbacks inclusively.

Called when an onResume() is coming up, prior to other pre-resume callbacks such as onNewIntent(Intent) and onActivityResult(int, int, Intent). This is primarily intended to give the activity a hint that its state is no longer saved -- it will generally be called after onSaveInstanceState(Bundle) and prior to the activity being resumed/started again.

onTopResumedActivityChanged

Added in API level 29

public void onTopResumedActivityChanged (boolean isTopResumedActivity)

Called when activity gets or loses the top resumed position in the system.

Starting with Build.VERSION_CODES.Q multiple activities can be resumed at the same time in multi-window and multi-display modes. This callback should be used instead of onResume() as an indication that the activity can try to open exclusive-access devices like camera.

It will always be delivered after the activity was resumed and before it is paused. In some cases it might be skipped and activity can go straight from onResume() to onPause() without receiving the top resumed state.

Parameters
`isTopResumedActivity`	`boolean`: `true` if it's the topmost resumed activity in the system, `false` otherwise. A call with this as `true` will always be followed by another one with `false`.

See also:

onTouchEvent

Added in API level 1

public boolean onTouchEvent (MotionEvent event)

Called when a touch screen event was not handled by any of the views inside of the activity. This is most useful to process touch events that happen outside of your window bounds, where there is no view to receive it.

Parameters
`event`	`MotionEvent`: The touch screen event being processed.

Returns
`boolean`	Return true if you have consumed the event, false if you haven't.

onTrackballEvent

Added in API level 1

public boolean onTrackballEvent (MotionEvent event)

Called when the trackball was moved and not handled by any of the views inside of the activity. So, for example, if the trackball moves while focus is on a button, you will receive a call here because buttons do not normally do anything with trackball events. The call here happens before trackball movements are converted to DPAD key events, which then get sent back to the view hierarchy, and will be processed at the point for things like focus navigation.

Parameters
`event`	`MotionEvent`: The trackball event being processed.

Returns
`boolean`	Return true if you have consumed the event, false if you haven't. The default implementation always returns false.

onTrimMemory

Added in API level 14

public void onTrimMemory (int level)

Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process. You should never compare to exact values of the level, since new intermediate values may be added -- you will typically want to compare if the value is greater or equal to a level you are interested in.

To retrieve the processes current trim level at any point, you can use ActivityManager.getMyMemoryState(RunningAppProcessInfo).

Parameters

level

int: The context of the trim, giving a hint of the amount of trimming the application may like to perform. Value is ComponentCallbacks2.TRIM_MEMORY_COMPLETE, ComponentCallbacks2.TRIM_MEMORY_MODERATE, ComponentCallbacks2.TRIM_MEMORY_BACKGROUND, ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN, ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL, ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW, or ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE

onUserInteraction

Added in API level 3

public void onUserInteraction ()

Called whenever a key, touch, or trackball event is dispatched to the activity. Implement this method if you wish to know that the user has interacted with the device in some way while your activity is running. This callback and onUserLeaveHint() are intended to help activities manage status bar notifications intelligently; specifically, for helping activities determine the proper time to cancel a notification.

All calls to your activity's onUserLeaveHint() callback will be accompanied by calls to onUserInteraction(). This ensures that your activity will be told of relevant user activity such as pulling down the notification pane and touching an item there.

Note that this callback will be invoked for the touch down action that begins a touch gesture, but may not be invoked for the touch-moved and touch-up actions that follow.

See also:

onUserLeaveHint()

onVisibleBehindCanceled

Added in API level 21
Deprecated in API level 26

public void onVisibleBehindCanceled ()

This method was deprecated in API level 26.
This method's functionality is no longer supported as of Build.VERSION_CODES.O and will be removed in a future release.

Called when a translucent activity over this activity is becoming opaque or another activity is being launched. Activities that override this method must call super.onVisibleBehindCanceled() or a SuperNotCalledException will be thrown.

When this method is called the activity has 500 msec to release any resources it may be using while visible in the background. If the activity has not returned from this method in 500 msec the system will destroy the activity and kill the process in order to recover the resources for another process. Otherwise onStop() will be called following return.
If you override this method you must call through to the superclass implementation.

See also:

requestVisibleBehind(boolean)

onWindowAttributesChanged

Added in API level 1

public void onWindowAttributesChanged (WindowManager.LayoutParams params)

This is called whenever the current window attributes change.

Parameters
`params`	`WindowManager.LayoutParams`

onWindowFocusChanged

Added in API level 1

public void onWindowFocusChanged (boolean hasFocus)

Called when the current Window of the activity gains or loses focus. This is the best indicator of whether this activity is the entity with which the user actively interacts. The default implementation clears the key tracking state, so should always be called.

Note that this provides information about global focus state, which is managed independently of activity lifecycle. As such, while focus changes will generally have some relation to lifecycle changes (an activity that is stopped will not generally get window focus), you should not rely on any particular order between the callbacks here and those in the other lifecycle methods such as onResume().

As a general rule, however, a foreground activity will have window focus... unless it has displayed other dialogs or popups that take input focus, in which case the activity itself will not have focus when the other windows have it. Likewise, the system may display system-level windows (such as the status bar notification panel or a system alert) which will temporarily take window input focus without pausing the foreground activity.

Starting with Build.VERSION_CODES.Q there can be multiple resumed activities at the same time in multi-window mode, so resumed state does not guarantee window focus even if there are no overlays above.

If the intent is to know when an activity is the topmost active, the one the user interacted with last among all activities but not including non-activity windows like dialogs and popups, then onTopResumedActivityChanged(boolean) should be used. On platform versions prior to Build.VERSION_CODES.Q, onResume() is the best indicator.

Parameters
`hasFocus`	`boolean`: Whether the window of this activity has focus.

See also:

onWindowStartingActionMode

Added in API level 23

public ActionMode onWindowStartingActionMode (ActionMode.Callback callback, 
                int type)

Called when an action mode is being started for this window. Gives the callback an opportunity to handle the action mode in its own unique and beautiful way. If this method returns null the system can choose a way to present the mode or choose not to start the mode at all.

Parameters
`callback`	`ActionMode.Callback`: Callback to control the lifecycle of this action mode
`type`	`int`: One of `ActionMode#TYPE_PRIMARY` or `ActionMode#TYPE_FLOATING`.

Returns
`ActionMode`	This value may be `null`.

onWindowStartingActionMode

Added in API level 11

public ActionMode onWindowStartingActionMode (ActionMode.Callback callback)

Give the Activity a chance to control the UI for an action mode requested by the system.

Note: If you are looking for a notification callback that an action mode has been started for this activity, see onActionModeStarted(android.view.ActionMode).

Parameters
`callback`	`ActionMode.Callback`: The callback that should control the new action mode

Returns
`ActionMode`	The new action mode, or `null` if the activity does not want to provide special handling for this action mode. (It will be handled by the system.)

openContextMenu

Added in API level 1

public void openContextMenu (View view)

Programmatically opens the context menu for a particular view. The view should have been added via registerForContextMenu(android.view.View).

Parameters
`view`	`View`: The view to show the context menu for.

openOptionsMenu

Added in API level 1

public void openOptionsMenu ()

Programmatically opens the options menu. If the options menu is already open, this method does nothing.

overrideActivityTransition

Added in API level 34

public void overrideActivityTransition (int overrideType, 
                int enterAnim, 
                int exitAnim, 
                int backgroundColor)

Customizes the animation for the activity transition with this activity. This can be called at any time while the activity still alive.

This is a more robust method of overriding the transition animation at runtime without relying on overridePendingTransition(int, int) which doesn't work for predictive back. However, the animation set from overridePendingTransition(int, int) still has higher priority when the system is looking for the next transition animation.

The animations resources set by this method will be chosen if and only if the activity is on top of the task while activity transitions are being played. For example, if we want to customize the opening transition when launching Activity B which gets started from Activity A, we should call this method inside B's onCreate with overrideType = OVERRIDE_TRANSITION_OPEN because the Activity B will on top of the task. And if we want to customize the closing transition when finishing Activity B and back to Activity A, since B is still is above A, we should call this method in Activity B with overrideType = OVERRIDE_TRANSITION_CLOSE.

If an Activity has called this method, and it also set another activity animation by Window#setWindowAnimations(int), the system will choose the animation set from this method.

Note that Window#setWindowAnimations, overridePendingTransition(int, int) and this method will be ignored if the Activity is started with ActivityOptions#makeSceneTransitionAnimation(Activity, Pair[]). Also note that this method can only be used to customize cross-activity transitions but not cross-task transitions which are fully non-customizable as of Android 11.

Parameters
`overrideType`	`int`: `OVERRIDE_TRANSITION_OPEN` This animation will be used when starting/entering an activity. `OVERRIDE_TRANSITION_CLOSE` This animation will be used when finishing/closing an activity. Value is `OVERRIDE_TRANSITION_OPEN`, or `OVERRIDE_TRANSITION_CLOSE`
`enterAnim`	`int`: A resource ID of the animation resource to use for the incoming activity. Use 0 for no animation.
`exitAnim`	`int`: A resource ID of the animation resource to use for the outgoing activity. Use 0 for no animation.
`backgroundColor`	`int`: The background color to use for the background during the animation if the animation requires a background. Set to `Color#TRANSPARENT` to not override the default color.

See also:

overrideActivityTransition

Added in API level 34

public void overrideActivityTransition (int overrideType, 
                int enterAnim, 
                int exitAnim)

Customizes the animation for the activity transition with this activity. This can be called at any time while the activity still alive.

If an Activity has called this method, and it also set another activity animation by Window#setWindowAnimations(int), the system will choose the animation set from this method.

Parameters
`overrideType`	`int`: `OVERRIDE_TRANSITION_OPEN` This animation will be used when starting/entering an activity. `OVERRIDE_TRANSITION_CLOSE` This animation will be used when finishing/closing an activity. Value is `OVERRIDE_TRANSITION_OPEN`, or `OVERRIDE_TRANSITION_CLOSE`
`enterAnim`	`int`: A resource ID of the animation resource to use for the incoming activity. Use 0 for no animation.
`exitAnim`	`int`: A resource ID of the animation resource to use for the outgoing activity. Use 0 for no animation.

See also:

overridePendingTransition

Added in API level 5
Deprecated in API level 34

public void overridePendingTransition (int enterAnim, 
                int exitAnim)

This method was deprecated in API level 34.
Use overrideActivityTransition(int, int, int)} instead.

Call immediately after one of the flavors of startActivity(android.content.Intent) or finish() to specify an explicit transition animation to perform next.

As of Build.VERSION_CODES.JELLY_BEAN an alternative to using this with starting activities is to supply the desired animation information through a ActivityOptions bundle to startActivity(android.content.Intent, android.os.Bundle) or a related function. This allows you to specify a custom animation even when starting an activity from outside the context of the current top activity.

Af of Build.VERSION_CODES.S application can only specify a transition animation when the transition happens within the same task. System default animation is used for cross-task transition animations.

Parameters
`enterAnim`	`int`: A resource ID of the animation resource to use for the incoming activity. Use 0 for no animation.
`exitAnim`	`int`: A resource ID of the animation resource to use for the outgoing activity. Use 0 for no animation.

overridePendingTransition

Added in API level 33
Deprecated in API level 34

public void overridePendingTransition (int enterAnim, 
                int exitAnim, 
                int backgroundColor)

This method was deprecated in API level 34.
Use overrideActivityTransition(int, int, int, int)} instead.

Call immediately after one of the flavors of startActivity(android.content.Intent) or finish() to specify an explicit transition animation to perform next.

Parameters
`enterAnim`	`int`: A resource ID of the animation resource to use for the incoming activity. Use 0 for no animation.
`exitAnim`	`int`: A resource ID of the animation resource to use for the outgoing activity. Use 0 for no animation.
`backgroundColor`	`int`: The background color to use for the background during the animation if the animation requires a background. Set to 0 to not override the default color.

postponeEnterTransition

Added in API level 21

public void postponeEnterTransition ()

Postpone the entering activity transition when Activity was started with ActivityOptions.makeSceneTransitionAnimation(Activity, android.util.Pair[]).

This method gives the Activity the ability to delay starting the entering and shared element transitions until all data is loaded. Until then, the Activity won't draw into its window, leaving the window transparent. This may also cause the returning animation to be delayed until data is ready. This method should be called in onCreate(android.os.Bundle) or in onActivityReenter(int, android.content.Intent). startPostponedEnterTransition() must be called to allow the Activity to start the transitions. If the Activity did not use ActivityOptions.makeSceneTransitionAnimation(Activity, android.util.Pair[]), then this method does nothing.

recreate

Added in API level 11

public void recreate ()

Cause this Activity to be recreated with a new instance. This results in essentially the same flow as when the Activity is created due to a configuration change -- the current instance will go through its lifecycle to onDestroy() and a new instance then created after it.

registerActivityLifecycleCallbacks

Added in API level 29

public void registerActivityLifecycleCallbacks (Application.ActivityLifecycleCallbacks callback)

In relation to any Application registered callbacks, the callbacks registered here will always occur nested within those callbacks. This means:

Pre events will first be sent to Application registered callbacks, then to callbacks registered here.
Application.ActivityLifecycleCallbacks#onActivityCreated(Activity, Bundle), Application.ActivityLifecycleCallbacks#onActivityStarted(Activity), and Application.ActivityLifecycleCallbacks#onActivityResumed(Activity) will be sent first to Application registered callbacks, then to callbacks registered here. For all other events, callbacks registered here will be sent first.
Post events will first be sent to callbacks registered here, then to Application registered callbacks.

If multiple callbacks are registered here, they receive events in a first in (up through Application.ActivityLifecycleCallbacks#onActivityPostResumed, last out ordering.

It is strongly recommended to register this in the constructor of your Activity to ensure you get all available callbacks. As this callback is associated with only this Activity, it is not usually necessary to unregister it unless you specifically do not want to receive further lifecycle callbacks.

Parameters
`callback`	`Application.ActivityLifecycleCallbacks`: The callback instance to register This value cannot be `null`.

registerComponentCallbacks

Added in API level 14

public void registerComponentCallbacks (ComponentCallbacks callback)

Add a new ComponentCallbacks to the base application of the Context, which will be called at the same times as the ComponentCallbacks methods of activities and other components are called. Note that you must be sure to use unregisterComponentCallbacks(ComponentCallbacks) when appropriate in the future; this will not be removed for you.

After Build.VERSION_CODES#TIRAMISU, the ComponentCallbacks will be registered to the base Context, and can be only used after attachBaseContext(android.content.Context). Users can still call to getApplicationContext().registerComponentCallbacks(ComponentCallbacks) to add ComponentCallbacks to the base application.

Parameters
`callback`	`ComponentCallbacks`: The interface to call. This can be either a `ComponentCallbacks` or `ComponentCallbacks2` interface.

registerForContextMenu

Added in API level 1

public void registerForContextMenu (View view)

Registers a context menu to be shown for the given view (multiple views can show the context menu). This method will set the OnCreateContextMenuListener on the view to this activity, so onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo) will be called when it is time to show the context menu.

Parameters
`view`	`View`: The view that should show a context menu.

See also:

unregisterForContextMenu(View)

registerScreenCaptureCallback

Added in API level 34

public void registerScreenCaptureCallback (Executor executor, 
                Activity.ScreenCaptureCallback callback)

Registers a screen capture callback for this activity. The callback will be triggered when a screen capture of this activity is attempted. This callback will be executed on the thread of the passed executor. For details, see ScreenCaptureCallback#onScreenCaptured.
Requires Manifest.permission.DETECT_SCREEN_CAPTURE

Parameters
`executor`	`Executor`: This value cannot be `null`. Callback and listener events are dispatched through this `Executor`, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use `Context.getMainExecutor()`. Otherwise, provide an `Executor` that dispatches to an appropriate thread.
`callback`	`Activity.ScreenCaptureCallback`: This value cannot be `null`.

releaseInstance

Added in API level 21

public boolean releaseInstance ()

Ask that the local app instance of this activity be released to free up its memory. This is asking for the activity to be destroyed, but does not finish the activity -- a new instance of the activity will later be re-created if needed due to the user navigating back to it.

Returns
`boolean`	Returns true if the activity was in a state that it has started the process of destroying its current instance; returns false if for any reason this could not be done: it is currently visible to the user, it is already being destroyed, it is being finished, it hasn't yet saved its state, etc.

removeDialog

Added in API level 1
Deprecated in API level 15

public final void removeDialog (int id)

This method was deprecated in API level 15.
Use the new DialogFragment class with FragmentManager instead; this is also available on older platforms through the Android compatibility package.

Removes any internal references to a dialog managed by this Activity. If the dialog is showing, it will dismiss it as part of the clean up.

This can be useful if you know that you will never show a dialog again and want to avoid the overhead of saving and restoring it in the future.

As of Build.VERSION_CODES.GINGERBREAD, this function will not throw an exception if you try to remove an ID that does not currently have an associated dialog.

Parameters
`id`	`int`: The id of the managed dialog.

See also:

reportFullyDrawn

Added in API level 19

public void reportFullyDrawn ()

Report to the system that your app is now fully drawn, for diagnostic and optimization purposes. The system may adjust optimizations to prioritize work that happens before reportFullyDrawn is called, to improve app startup. Misrepresenting the startup window by calling reportFullyDrawn too late or too early may decrease application and startup performance.

This is also used to help instrument application launch times, so that the app can report when it is fully in a usable state; without this, the only thing the system itself can determine is the point at which the activity's window is first drawn and displayed. To participate in app launch time measurement, you should always call this method after first launch (when onCreate(android.os.Bundle) is called), at the point where you have entirely drawn your UI and populated with all of the significant data. You can safely call this method any time after first launch as well, in which case it will simply be ignored.

If this method is called before the activity's window is first drawn and displayed as measured by the system, the reported time here will be shifted to the system measured time.

requestDragAndDropPermissions

Added in API level 24

public DragAndDropPermissions requestDragAndDropPermissions (DragEvent event)

Create DragAndDropPermissions object bound to this activity and controlling the access permissions for content URIs associated with the DragEvent.

Parameters
`event`	`DragEvent`: Drag event

Returns
`DragAndDropPermissions`	The `DragAndDropPermissions` object used to control access to the content URIs. Null if no content URIs are associated with the event or if permissions could not be granted.

requestFullscreenMode

Added in API level 34

public void requestFullscreenMode (int request, 
                OutcomeReceiver<Void, Throwable> approvalCallback)

Request to put the activity into fullscreen. The requester must be pinned or the top-most activity of the focused display which can be verified using onTopResumedActivityChanged(boolean). The request should also be a response to a user input. When getting fullscreen and receiving corresponding onConfigurationChanged(android.content.res.Configuration) and onMultiWindowModeChanged(boolean, android.content.res.Configuration), the activity should relayout itself and the system bars' visibilities can be controlled as usual fullscreen apps. Calling it again with the exit request can restore the activity to the previous status. This will only happen when it got into fullscreen through this API.

Parameters

request

int: Can be FULLSCREEN_MODE_REQUEST_ENTER or FULLSCREEN_MODE_REQUEST_EXIT to indicate this request is to get fullscreen or get restored. Value is FULLSCREEN_MODE_REQUEST_EXIT, or FULLSCREEN_MODE_REQUEST_ENTER

approvalCallback

OutcomeReceiver: Optional callback, use null when not necessary. When the request is approved or rejected, the callback will be triggered. This will happen before any configuration change. The callback will be dispatched on the main thread. If the request is rejected, the Throwable provided will be an IllegalStateException with a detailed message can be retrieved by Throwable#getMessage().

requestPermissions

Added in API level 35

public final void requestPermissions (String[] permissions, 
                int requestCode, 
                int deviceId)

Requests permissions to be granted to this application. These permissions must be requested in your manifest, they should not be granted to your app, and they should have protection level dangerous, regardless whether they are declared by the platform or a third-party app.

Normal permissions PermissionInfo.PROTECTION_NORMAL are granted at install time if requested in the manifest. Signature permissions PermissionInfo.PROTECTION_SIGNATURE are granted at install time if requested in the manifest and the signature of your app matches the signature of the app declaring the permissions.

Call shouldShowRequestPermissionRationale(String) before calling this API to check if the system recommends to show a rationale UI before asking for a permission.

If your app does not have the requested permissions the user will be presented with UI for accepting them. After the user has accepted or rejected the requested permissions you will receive a callback on onRequestPermissionsResult(int, String, int) reporting whether the permissions were granted or not.

Note that requesting a permission does not guarantee it will be granted and your app should be able to run without having this permission.

This method may start an activity allowing the user to choose which permissions to grant and which to reject. Hence, you should be prepared that your activity may be paused and resumed. Further, granting some permissions may require a restart of you application. In such a case, the system will recreate the activity stack before delivering the result to onRequestPermissionsResult(int, String, int).

When checking whether you have a permission you should use ContextWrapper.checkSelfPermission(java.lang.String).

You cannot request a permission if your activity sets noHistory to true because in this case the activity would not receive result callbacks including onRequestPermissionsResult(int, String, int).

The permissions samples repo demonstrates how to use this method to request permissions at run time.

Parameters
`permissions`	`String`: The requested permissions. Must be non-null and not empty.
`requestCode`	`int`: Application specific request code to match with a result reported to `onRequestPermissionsResult(int, String, int)`. Should be >= 0.
`deviceId`	`int`: The app is requesting permissions for this device. The primary/physical device is assigned `Context#DEVICE_ID_DEFAULT`, and virtual devices are assigned unique device Ids.

Throws
`IllegalArgumentException`	if requestCode is negative.

See also:

requestPermissions

Added in API level 23

public final void requestPermissions (String[] permissions, 
                int requestCode)

Call shouldShowRequestPermissionRationale(String) before calling this API to check if the system recommends to show a rationale UI before asking for a permission.

Note that requesting a permission does not guarantee it will be granted and your app should be able to run without having this permission.

When checking whether you have a permission you should use ContextWrapper.checkSelfPermission(java.lang.String).

The permissions samples repo demonstrates how to use this method to request permissions at run time.

Parameters
`permissions`	`String`: The requested permissions. Must be non-null and not empty.
`requestCode`	`int`: Application specific request code to match with a result reported to `onRequestPermissionsResult(int, String, int)`. Should be >= 0.

Throws
`IllegalArgumentException`	if requestCode is negative.

See also:

requestShowKeyboardShortcuts

Added in API level 24

public final void requestShowKeyboardShortcuts ()

Request the Keyboard Shortcuts screen to show up. This will trigger onProvideKeyboardShortcuts(List, Menu, int) to retrieve the shortcuts for the foreground activity.

requestVisibleBehind

Added in API level 21
Deprecated in API level 26

public boolean requestVisibleBehind (boolean visible)

This method was deprecated in API level 26.
This method's functionality is no longer supported as of Build.VERSION_CODES.O and will be removed in a future release.

Activities that want to remain visible behind a translucent activity above them must call this method anytime between the start of onResume() and the return from onPause(). If this call is successful then the activity will remain visible after onPause() is called, and is allowed to continue playing media in the background.

The actions of this call are reset each time that this activity is brought to the front. That is, every time onResume() is called the activity will be assumed to not have requested visible behind. Therefore, if you want this activity to continue to be visible in the background you must call this method again.

Only fullscreen opaque activities may make this call. I.e. this call is a nop for dialog and translucent activities.

Under all circumstances, the activity must stop playing and release resources prior to or within a call to onVisibleBehindCanceled() or if this call returns false.

False will be returned any time this method is called between the return of onPause and the next call to onResume.

Parameters
`visible`	`boolean`: true to notify the system that the activity wishes to be visible behind other translucent activities, false to indicate otherwise. Resources must be released when passing false to this method.

Returns

boolean

the resulting visibiity state. If true the activity will remain visible beyond onPause() if the next activity is translucent or not fullscreen. If false then the activity may not count on being visible behind other translucent activities, and must stop any media playback and release resources. Returning false may occur in lieu of a call to onVisibleBehindCanceled() so the return value must be checked.

See also:

onVisibleBehindCanceled()

requestWindowFeature

Added in API level 1

public final boolean requestWindowFeature (int featureId)

Enable extended window features. This is a convenience for calling getWindow().requestFeature().

Parameters
`featureId`	`int`: The desired feature as defined in `Window`.

Returns
`boolean`	Returns true if the requested feature is supported and now enabled.

See also:

Window.requestFeature(int)

requireViewById

Added in API level 28

public final T requireViewById (int id)

Finds a view that was identified by the android:id XML attribute that was processed in onCreate(Bundle), or throws an IllegalArgumentException if the ID is invalid, or there is no matching view in the hierarchy.

Parameters
`id`	`int`: the ID to search for

Returns
`T`	a view with given ID This value cannot be `null`.

See also:

runOnUiThread

Added in API level 1

public final void runOnUiThread (Runnable action)

Runs the specified action on the UI thread. If the current thread is the UI thread, then the action is executed immediately. If the current thread is not the UI thread, the action is posted to the event queue of the UI thread.

Parameters
`action`	`Runnable`: the action to run on the UI thread

Added in API level 21

public void setActionBar (Toolbar toolbar)

Set a Toolbar to act as the ActionBar for this Activity window.

When set to a non-null value the getActionBar() method will return an ActionBar object that can be used to control the given toolbar as if it were a traditional window decor action bar. The toolbar's menu will be populated with the Activity's options menu and the navigation button will be wired through the standard home menu select action.

In order to use a Toolbar within the Activity's window content the application must not request the window feature FEATURE_ACTION_BAR.

Parameters
`toolbar`	`Toolbar`: Toolbar to set as the Activity's action bar, or `null` to clear it

setAllowCrossUidActivitySwitchFromBelow

Added in API level 35

public void setAllowCrossUidActivitySwitchFromBelow (boolean allowed)

Specifies whether the activities below this one in the task can also start other activities or finish the task.

Starting from Target SDK Level Build.VERSION_CODES.VANILLA_ICE_CREAM, apps may be blocked from starting new activities or finishing their task unless the top activity of such task belong to the same UID for security reasons.

Setting this flag to true will allow the launching app to ignore the restriction if this activity is on top. Apps matching the UID of this activity are always exempt.

Parameters
`allowed`	`boolean`: `true` to disable the UID restrictions; `false` to revert back to the default behaviour

setContentTransitionManager

Added in API level 21

public void setContentTransitionManager (TransitionManager tm)

Set the TransitionManager to use for default transitions in this window. Requires Window#FEATURE_CONTENT_TRANSITIONS.

Parameters
`tm`	`TransitionManager`: The TransitionManager to use for scene changes.

setContentView

Added in API level 1

public void setContentView (View view, 
                ViewGroup.LayoutParams params)

Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy.

Parameters
`view`	`View`: The desired content to display.
`params`	`ViewGroup.LayoutParams`: Layout parameters for the view.

See also:

setContentView

Added in API level 1

public void setContentView (View view)

Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy. When calling this method, the layout parameters of the specified view are ignored. Both the width and the height of the view are set by default to ViewGroup.LayoutParams#MATCH_PARENT. To use your own layout parameters, invoke setContentView(android.view.View, android.view.ViewGroup.LayoutParams) instead.

Parameters
`view`	`View`: The desired content to display.

See also:

setContentView

Added in API level 1

public void setContentView (int layoutResID)

Set the activity content from a layout resource. The resource will be inflated, adding all top-level views to the activity.

Parameters
`layoutResID`	`int`: Resource ID to be inflated.

See also:

setDefaultKeyMode

Added in API level 1

public final void setDefaultKeyMode (int mode)

Select the default key handling for this activity. This controls what will happen to key events that are not otherwise handled. The default mode (DEFAULT_KEYS_DISABLE) will simply drop them on the floor. Other modes allow you to launch the dialer (DEFAULT_KEYS_DIALER), execute a shortcut in your options menu without requiring the menu key be held down (DEFAULT_KEYS_SHORTCUT), or launch a search (DEFAULT_KEYS_SEARCH_LOCAL and DEFAULT_KEYS_SEARCH_GLOBAL).

Note that the mode selected here does not impact the default handling of system keys, such as the "back" and "menu" keys, and your activity and its views always get a first chance to receive and handle all application keys.

Parameters
`mode`	`int`: The desired default key mode constant. Value is `DEFAULT_KEYS_DISABLE`, `DEFAULT_KEYS_DIALER`, `DEFAULT_KEYS_SHORTCUT`, `DEFAULT_KEYS_SEARCH_LOCAL`, or `DEFAULT_KEYS_SEARCH_GLOBAL`

See also:

onKeyDown(int, KeyEvent)

setEnterSharedElementCallback

Added in API level 21

public void setEnterSharedElementCallback (SharedElementCallback callback)

When ActivityOptions.makeSceneTransitionAnimation(Activity, android.view.View, String) was used to start an Activity, callback will be called to handle shared elements on the launched Activity. This requires Window#FEATURE_ACTIVITY_TRANSITIONS.

Parameters
`callback`	`SharedElementCallback`: Used to manipulate shared element transitions on the launched Activity.

setExitSharedElementCallback

Added in API level 21

public void setExitSharedElementCallback (SharedElementCallback callback)

When ActivityOptions.makeSceneTransitionAnimation(Activity, android.view.View, String) was used to start an Activity, callback will be called to handle shared elements on the launching Activity. Most calls will only come when returning from the started Activity. This requires Window#FEATURE_ACTIVITY_TRANSITIONS.

Parameters
`callback`	`SharedElementCallback`: Used to manipulate shared element transitions on the launching Activity.

setFeatureDrawable

Added in API level 1

public final void setFeatureDrawable (int featureId, 
                Drawable drawable)

Convenience for calling Window.setFeatureDrawable(int, Drawable).

Parameters
`featureId`	`int`
`drawable`	`Drawable`

setFeatureDrawableAlpha

Added in API level 1

public final void setFeatureDrawableAlpha (int featureId, 
                int alpha)

Convenience for calling Window.setFeatureDrawableAlpha(int, int).

Parameters
`featureId`	`int`
`alpha`	`int`

setFeatureDrawableResource

Added in API level 1

public final void setFeatureDrawableResource (int featureId, 
                int resId)

Convenience for calling Window.setFeatureDrawableResource(int, int).

Parameters
`featureId`	`int`
`resId`	`int`

setFeatureDrawableUri

Added in API level 1

public final void setFeatureDrawableUri (int featureId, 
                Uri uri)

Convenience for calling Window.setFeatureDrawableUri(int, Uri).

Parameters
`featureId`	`int`
`uri`	`Uri`

setFinishOnTouchOutside

Added in API level 11

public void setFinishOnTouchOutside (boolean finish)

Sets whether this activity is finished when touched outside its window's bounds.

Parameters
`finish`	`boolean`

setImmersive

Added in API level 18

public void setImmersive (boolean i)

Adjust the current immersive mode setting. Note that changing this value will have no effect on the activity's ActivityInfo structure; that is, if android:immersive is set to true in the application's manifest entry for this activity, the ActivityInfo.flags member will always have its FLAG_IMMERSIVE bit set.

Parameters
`i`	`boolean`

See also:

setInheritShowWhenLocked

Added in API level 29

public void setInheritShowWhenLocked (boolean inheritShowWhenLocked)

Specifies whether this Activity should be shown on top of the lock screen whenever the lockscreen is up and this activity has another activity behind it with the showWhenLock attribute set. That is, this activity is only visible on the lock screen if there is another activity with the showWhenLock attribute visible at the same time on the lock screen. A use case for this is permission dialogs, that should only be visible on the lock screen if their requesting activity is also visible. This value can be set as a manifest attribute using android.R.attr#inheritShowWhenLocked.

Parameters
`inheritShowWhenLocked`	`boolean`: `true` to show the `Activity` on top of the lock screen when this activity has another activity behind it with the showWhenLock attribute set; `false` otherwise.

See also:

setIntent

Added in API level 1

public void setIntent (Intent newIntent)

Changes the intent returned by getIntent(). This holds a reference to the given intent; it does not copy it. Often used in conjunction with onNewIntent(android.content.Intent).

Parameters
`newIntent`	`Intent`: The new Intent object to return from `getIntent()`

See also:

setIntent

Added in API level 35

public void setIntent (Intent newIntent, 
                ComponentCaller newCaller)

Changes the intent returned by getIntent(), and ComponentCaller returned by getCaller(). This holds references to the given intent, and ComponentCaller; it does not copy them. Often used in conjunction with onNewIntent(android.content.Intent). To retrieve the caller from onNewIntent(android.content.Intent), use getCurrentCaller(), otherwise override onNewIntent(android.content.Intent, android.app.ComponentCaller).

Parameters
`newIntent`	`Intent`: The new Intent object to return from `getIntent()` This value may be `null`.
`newCaller`	`ComponentCaller`: The new `ComponentCaller` object to return from `getCaller()` This value may be `null`.

See also:

setLocusContext

Added in API level 30

public void setLocusContext (LocusId locusId, 
                Bundle bundle)

Sets the LocusId for this activity. The locus id helps identify different instances of the same Activity class.

For example, a locus id based on a specific conversation could be set on a conversation app's chat Activity. The system can then use this locus id along with app's contents to provide ranking signals in various UI surfaces including sharing, notifications, shortcuts and so on.

It is recommended to set the same locus id in the shortcut's locus id using setLocusId so that the system can learn appropriate ranking signals linking the activity's locus id with the matching shortcut.

Parameters
`locusId`	`LocusId`: a unique, stable id that identifies this `Activity` instance. LocusId is an opaque ID that links this Activity's state to different Android concepts: `setLocusId`. LocusID is null by default or if you explicitly reset it.
`bundle`	`Bundle`: extras set or updated as part of this locus context. This may help provide additional metadata such as URLs, conversation participants specific to this `Activity`'s context. Bundle can be null if additional metadata is not needed. Bundle should always be null for null locusId.

See also:

setMediaController

Added in API level 21

public final void setMediaController (MediaController controller)

Sets a MediaController to send media keys and volume changes to.

The controller will be tied to the window of this Activity. Media key and volume events which are received while the Activity is in the foreground will be forwarded to the controller and used to invoke transport controls or adjust the volume. This may be used instead of or in addition to setVolumeControlStream(int) to affect a specific session instead of a specific stream.

It is not guaranteed that the hardware volume controls will always change this session's volume (for example, if a call is in progress, its stream's volume may be changed instead). To reset back to the default use null as the controller.

Parameters
`controller`	`MediaController`: The controller for the session which should receive media keys and volume changes.

setPictureInPictureParams

Added in API level 26

public void setPictureInPictureParams (PictureInPictureParams params)

Updates the properties of the picture-in-picture activity, or sets it to be used later when enterPictureInPictureMode() is called.

Parameters
`params`	`PictureInPictureParams`: the new parameters for the picture-in-picture. This value cannot be `null`.

setProgress

Added in API level 1
Deprecated in API level 24

public final void setProgress (int progress)

This method was deprecated in API level 24.
No longer supported starting in API 21.

Sets the progress for the progress bars in the title.

In order for the progress bar to be shown, the feature must be requested via requestWindowFeature(int).

Parameters
`progress`	`int`: The progress for the progress bar. Valid ranges are from 0 to 10000 (both inclusive). If 10000 is given, the progress bar will be completely filled and will fade out.

setProgressBarIndeterminate

Added in API level 1
Deprecated in API level 24

public final void setProgressBarIndeterminate (boolean indeterminate)

This method was deprecated in API level 24.
No longer supported starting in API 21.

Sets whether the horizontal progress bar in the title should be indeterminate (the circular is always indeterminate).

In order for the progress bar to be shown, the feature must be requested via requestWindowFeature(int).

Parameters
`indeterminate`	`boolean`: Whether the horizontal progress bar should be indeterminate.

setProgressBarIndeterminateVisibility

Added in API level 1
Deprecated in API level 24

public final void setProgressBarIndeterminateVisibility (boolean visible)

This method was deprecated in API level 24.
No longer supported starting in API 21.

Sets the visibility of the indeterminate progress bar in the title.

In order for the progress bar to be shown, the feature must be requested via requestWindowFeature(int).

Parameters
`visible`	`boolean`: Whether to show the progress bars in the title.

setProgressBarVisibility

Added in API level 1
Deprecated in API level 24

public final void setProgressBarVisibility (boolean visible)

This method was deprecated in API level 24.
No longer supported starting in API 21.

Sets the visibility of the progress bar in the title.

In order for the progress bar to be shown, the feature must be requested via requestWindowFeature(int).

Parameters
`visible`	`boolean`: Whether to show the progress bars in the title.

setRecentsScreenshotEnabled

Added in API level 33

public void setRecentsScreenshotEnabled (boolean enabled)

If set to false, this indicates to the system that it should never take a screenshot of the activity to be used as a representation in recents screen. By default, this value is true.

Note that the system may use the window background of the theme instead to represent the window when it is not running.

Also note that in comparison to WindowManager.LayoutParams.FLAG_SECURE, this only affects the behavior when the activity's screenshot would be used as a representation when the activity is not in a started state, i.e. in Overview. The system may still take screenshots of the activity in other contexts; for example, when the user takes a screenshot of the entire screen, or when the active VoiceInteractionService requests a screenshot via VoiceInteractionSession.SHOW_WITH_SCREENSHOT.

Parameters
`enabled`	`boolean`: `true` to enable recents screenshots; `false` otherwise.

setRequestedOrientation

Added in API level 1

public void setRequestedOrientation (int requestedOrientation)

Change the desired orientation of this activity. If the activity is currently in the foreground or otherwise impacting the screen orientation, the screen will immediately be changed (possibly causing the activity to be restarted). Otherwise, this will be used the next time the activity is visible.

Parameters

requestedOrientation

int: An orientation constant as used in ActivityInfo.screenOrientation. Value is android.content.pm.ActivityInfo.SCREEN_ORIENTATION_UNSET, ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED, ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_USER, ActivityInfo.SCREEN_ORIENTATION_BEHIND, ActivityInfo.SCREEN_ORIENTATION_SENSOR, ActivityInfo.SCREEN_ORIENTATION_NOSENSOR, ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR, ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE, ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT, ActivityInfo.SCREEN_ORIENTATION_FULL_USER, or ActivityInfo.SCREEN_ORIENTATION_LOCKED

setResult

Added in API level 1

public final void setResult (int resultCode, 
                Intent data)

Call this to set the result that your activity will return to its caller.

As of Build.VERSION_CODES.GINGERBREAD, the Intent you supply here can have Intent.FLAG_GRANT_READ_URI_PERMISSION and/or Intent.FLAG_GRANT_WRITE_URI_PERMISSION set. This will grant the Activity receiving the result access to the specific URIs in the Intent. Access will remain until the Activity has finished (it will remain across the hosting process being killed and other temporary destruction) and will be added to any existing set of URI permissions it already holds.

Parameters
`resultCode`	`int`: The result code to propagate back to the originating activity, often RESULT_CANCELED or RESULT_OK
`data`	`Intent`: The data to propagate back to the originating activity.

See also:

setResult

Added in API level 1

public final void setResult (int resultCode)

Call this to set the result that your activity will return to its caller.

Parameters
`resultCode`	`int`: The result code to propagate back to the originating activity, often RESULT_CANCELED or RESULT_OK

See also:

setSecondaryProgress

Added in API level 1
Deprecated in API level 24

public final void setSecondaryProgress (int secondaryProgress)

This method was deprecated in API level 24.
No longer supported starting in API 21.

Sets the secondary progress for the progress bar in the title. This progress is drawn between the primary progress (set via setProgress(int) and the background. It can be ideal for media scenarios such as showing the buffering progress while the default progress shows the play progress.

In order for the progress bar to be shown, the feature must be requested via requestWindowFeature(int).

Parameters
`secondaryProgress`	`int`: The secondary progress for the progress bar. Valid ranges are from 0 to 10000 (both inclusive).

setShouldDockBigOverlays

Added in API level 33

public void setShouldDockBigOverlays (boolean shouldDockBigOverlays)

Specifies a preference to dock big overlays like the expanded picture-in-picture on TV (see PictureInPictureParams.Builder#setExpandedAspectRatio). Docking puts the big overlay side-by-side next to this activity, so that both windows are fully visible to the user.

If unspecified, whether the overlay window will be docked or not, will be defined by the system.

If specified, the system will try to respect the preference, but it may be overridden by a user preference.

Parameters
`shouldDockBigOverlays`	`boolean`: indicates that big overlays should be docked next to the activity instead of overlay its content

See also:

setShowWhenLocked

Added in API level 27

public void setShowWhenLocked (boolean showWhenLocked)

Specifies whether an Activity should be shown on top of the lock screen whenever the lockscreen is up and the activity is resumed. Normally an activity will be transitioned to the stopped state if it is started while the lockscreen is up, but with this flag set the activity will remain in the resumed state visible on-top of the lock screen. This value can be set as a manifest attribute using R.attr.showWhenLocked.

Parameters
`showWhenLocked`	`boolean`: `true` to show the `Activity` on top of the lock screen; `false` otherwise.

See also:

setTaskDescription

Added in API level 21

public void setTaskDescription (ActivityManager.TaskDescription taskDescription)

Sets information describing the task with this activity for presentation inside the Recents System UI. When ActivityManager#getRecentTasks is called, the activities of each task are traversed in order from the topmost activity to the bottommost. The traversal continues for each property until a suitable value is found. For each task the taskDescription will be returned in ActivityManager.TaskDescription.

Parameters
`taskDescription`	`ActivityManager.TaskDescription`: The TaskDescription properties that describe the task with this activity

See also:

setTheme

Added in API level 1

public void setTheme (int resid)

Set the base theme for this context. Note that this should be called before any views are instantiated in the Context (for example before calling Activity.setContentView(View) or LayoutInflater.inflate(int, ViewGroup)).

Parameters
`resid`	`int`: The style resource describing the theme.

setTitle

Added in API level 1

public void setTitle (CharSequence title)

Change the title associated with this activity. If this is a top-level activity, the title for its window will change. If it is an embedded activity, the parent can do whatever it wants with it.

Parameters
`title`	`CharSequence`

setTitle

Added in API level 1

public void setTitle (int titleId)

Change the title associated with this activity. If this is a top-level activity, the title for its window will change. If it is an embedded activity, the parent can do whatever it wants with it.

Parameters
`titleId`	`int`

setTitleColor

Added in API level 1
Deprecated in API level 21

public void setTitleColor (int textColor)

This method was deprecated in API level 21.
Use action bar styles instead.

Change the color of the title associated with this activity.

This method is deprecated starting in API Level 11 and replaced by action bar styles. For information on styling the Action Bar, read the Action Bar developer guide.

Parameters
`textColor`	`int`

setTranslucent

Added in API level 30

public boolean setTranslucent (boolean translucent)

Convert an activity, which particularly with R.attr.windowIsTranslucent or R.attr.windowIsFloating attribute, to a fullscreen opaque activity, or convert it from opaque back to translucent.

Parameters
`translucent`	`boolean`: `true` convert from opaque to translucent. `false` convert from translucent to opaque.

Returns
`boolean`	The result of setting translucency. Return `true` if set successfully, `false` otherwise.

setTurnScreenOn

Added in API level 27

public void setTurnScreenOn (boolean turnScreenOn)

Specifies whether the screen should be turned on when the Activity is resumed. Normally an activity will be transitioned to the stopped state if it is started while the screen if off, but with this flag set the activity will cause the screen to turn on if the activity will be visible and resumed due to the screen coming on. The screen will not be turned on if the activity won't be visible after the screen is turned on. This flag is normally used in conjunction with the R.attr.showWhenLocked flag to make sure the activity is visible after the screen is turned on when the lockscreen is up. In addition, if this flag is set and the activity calls KeyguardManager.requestDismissKeyguard(android.app.Activity, android.app.KeyguardManager.KeyguardDismissCallback) the screen will turn on.

Parameters
`turnScreenOn`	`boolean`: `true` to turn on the screen; `false` otherwise.

See also:

setVisible

Added in API level 3

public void setVisible (boolean visible)

Control whether this activity's main window is visible. This is intended only for the special case of an activity that is not going to show a UI itself, but can't just finish prior to onResume() because it needs to wait for a service binding or such. Setting this to false allows you to prevent your UI from being shown during that time.

The default value for this is taken from the R.attr.windowNoDisplay attribute of the activity's theme.

Parameters
`visible`	`boolean`

setVolumeControlStream

Added in API level 1

public final void setVolumeControlStream (int streamType)

Suggests an audio stream whose volume should be changed by the hardware volume controls.

The suggested audio stream will be tied to the window of this Activity. Volume requests which are received while the Activity is in the foreground will affect this stream.

It is not guaranteed that the hardware volume controls will always change this stream's volume (for example, if a call is in progress, its stream's volume may be changed instead). To reset back to the default, use AudioManager#USE_DEFAULT_STREAM_TYPE.

Parameters
`streamType`	`int`: The type of the audio stream whose volume should be changed by the hardware volume controls.

setVrModeEnabled

Added in API level 24

public void setVrModeEnabled (boolean enabled, 
                ComponentName requestedComponent)

Enable or disable virtual reality (VR) mode for this Activity.

VR mode is a hint to Android system to switch to a mode optimized for VR applications while this Activity has user focus.

It is recommended that applications additionally declare R.attr.enableVrMode in their manifest to allow for smooth activity transitions when switching between VR activities.

If the requested VrListenerService component is not available, VR mode will not be started. Developers can handle this case as follows:

 String servicePackage = "com.whatever.app";
 String serviceClass = "com.whatever.app.MyVrListenerService";

 // Name of the component of the VrListenerService to start.
 ComponentName serviceComponent = new ComponentName(servicePackage, serviceClass);

 try {
    setVrModeEnabled(true, myComponentName);
 } catch (PackageManager.NameNotFoundException e) {
        List<ApplicationInfo> installed = getPackageManager().getInstalledApplications(0);
        boolean isInstalled = false;
        for (ApplicationInfo app : installed) {
            if (app.packageName.equals(servicePackage)) {
                isInstalled = true;
                break;
            }
        }
        if (isInstalled) {
            // Package is installed, but not enabled in Settings.  Let user enable it.
            startActivity(new Intent(Settings.ACTION_VR_LISTENER_SETTINGS));
        } else {
            // Package is not installed.  Send an intent to download this.
            sentIntentToLaunchAppStore(servicePackage);
        }
 }

Parameters
`enabled`	`boolean`: `true` to enable this mode.
`requestedComponent`	`ComponentName`: the name of the component to use as a `VrListenerService` while VR mode is enabled. This value cannot be `null`.

Throws
`PackageManager.NameNotFoundException`	if the given component to run as a `VrListenerService` is not installed, or has not been enabled in user settings.

See also:

shouldDockBigOverlays

Added in API level 33

public boolean shouldDockBigOverlays ()

Returns whether big overlays should be docked next to the activity as set by setShouldDockBigOverlays(boolean).

Returns
`boolean`	`true` if big overlays should be docked next to the activity instead of overlay its content

See also:

setShouldDockBigOverlays(boolean)

shouldShowRequestPermissionRationale

Added in API level 23

public boolean shouldShowRequestPermissionRationale (String permission)

Gets whether you should show UI with rationale before requesting a permission.

Parameters
`permission`	`String`: A permission your app wants to request. This value cannot be `null`.

Returns
`boolean`	Whether you should show permission rationale UI.

See also:

shouldShowRequestPermissionRationale

Added in API level 35

public boolean shouldShowRequestPermissionRationale (String permission, 
                int deviceId)

Gets whether you should show UI with rationale before requesting a permission.

Parameters
`permission`	`String`: A permission your app wants to request. This value cannot be `null`.
`deviceId`	`int`: The app is requesting permissions for this device. The primary/physical device is assigned `Context#DEVICE_ID_DEFAULT`, and virtual devices are assigned unique device Ids.

Returns
`boolean`	Whether you should show permission rationale UI.

See also:

shouldUpRecreateTask

Added in API level 16

public boolean shouldUpRecreateTask (Intent targetIntent)

Returns true if the app should recreate the task when navigating 'up' from this activity by using targetIntent.

If this method returns false the app can trivially call navigateUpTo(android.content.Intent) using the same parameters to correctly perform up navigation. If this method returns false, the app should synthesize a new task stack by using TaskStackBuilder or another similar mechanism to perform up navigation.

Parameters
`targetIntent`	`Intent`: An intent representing the target destination for up navigation

Returns
`boolean`	true if navigating up should recreate a new task stack, false if the same task should be used for the destination

showAssist

Added in API level 23

public boolean showAssist (Bundle args)

Ask to have the current assistant shown to the user. This only works if the calling activity is the current foreground activity. It is the same as calling VoiceInteractionService.showSession and requesting all of the possible context. The receiver will always see VoiceInteractionSession.SHOW_SOURCE_APPLICATION set.

Parameters
`args`	`Bundle`

Returns
`boolean`	Returns true if the assistant was successfully invoked, else false. For example false will be returned if the caller is not the current top activity.

showDialog

Added in API level 8
Deprecated in API level 15

public final boolean showDialog (int id, 
                Bundle args)

This method was deprecated in API level 15.
Use the new DialogFragment class with FragmentManager instead; this is also available on older platforms through the Android compatibility package.

Show a dialog managed by this activity. A call to onCreateDialog(int, android.os.Bundle) will be made with the same id the first time this is called for a given id. From thereafter, the dialog will be automatically saved and restored. If you are targeting Build.VERSION_CODES.HONEYCOMB or later, consider instead using a DialogFragment instead.

Each time a dialog is shown, onPrepareDialog(int, android.app.Dialog, android.os.Bundle) will be made to provide an opportunity to do any timely preparation.

Parameters
`id`	`int`: The id of the managed dialog.
`args`	`Bundle`: Arguments to pass through to the dialog. These will be saved and restored for you. Note that if the dialog is already created, `onCreateDialog(int, android.os.Bundle)` will not be called with the new arguments but `onPrepareDialog(int, android.app.Dialog, android.os.Bundle)` will be. If you need to rebuild the dialog, call `removeDialog(int)` first.

Returns
`boolean`	Returns true if the Dialog was created; false is returned if it is not created because `onCreateDialog(int, android.os.Bundle)` returns false.

See also:

showDialog

Added in API level 1
Deprecated in API level 15

public final void showDialog (int id)

This method was deprecated in API level 15.
Use the new DialogFragment class with FragmentManager instead; this is also available on older platforms through the Android compatibility package.

Simple version of showDialog(int, android.os.Bundle) that does not take any arguments. Simply calls showDialog(int, android.os.Bundle) with null arguments.

Parameters
`id`	`int`

showLockTaskEscapeMessage

Added in API level 23

public void showLockTaskEscapeMessage ()

Shows the user the system defined message for telling the user how to exit lock task mode. The task containing this activity must be in lock task mode at the time of this call for the message to be displayed.

startActionMode

Added in API level 23

public ActionMode startActionMode (ActionMode.Callback callback, 
                int type)

Start an action mode of the given type.

Parameters
`callback`	`ActionMode.Callback`: Callback that will manage lifecycle events for this action mode
`type`	`int`: One of `ActionMode#TYPE_PRIMARY` or `ActionMode#TYPE_FLOATING`.

Returns
`ActionMode`	The ActionMode that was started, or null if it was canceled

See also:

ActionMode

startActionMode

Added in API level 11

public ActionMode startActionMode (ActionMode.Callback callback)

Start an action mode of the default type ActionMode#TYPE_PRIMARY.

Parameters
`callback`	`ActionMode.Callback`: Callback that will manage lifecycle events for this action mode

Returns
`ActionMode`	The ActionMode that was started, or null if it was canceled

See also:

ActionMode

startActivities

Added in API level 16

public void startActivities (Intent[] intents, 
                Bundle options)

Launch a new activity. You will not receive any information about when the activity exits. This implementation overrides the base version, providing information about the activity performing the launch. Because of this additional information, the Intent#FLAG_ACTIVITY_NEW_TASK launch flag is not required; if not specified, the new activity will be added to the task of the caller.

This method throws ActivityNotFoundException if there was no Activity found to run the given Intent.

Parameters
`intents`	`Intent`: The intents to start.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Throws
	android.content.ActivityNotFoundException

See also:

startActivities

Added in API level 11

public void startActivities (Intent[] intents)

Same as startActivities(android.content.Intent[], android.os.Bundle) with no options specified.

Parameters
`intents`	`Intent`: The intents to start.

Throws
	android.content.ActivityNotFoundException

See also:

startActivity

Added in API level 1

public void startActivity (Intent intent)

Same as startActivity(android.content.Intent, android.os.Bundle) with no options specified.

Parameters
`intent`	`Intent`: The intent to start.

Throws
	android.content.ActivityNotFoundException

See also:

startActivity

Added in API level 16

public void startActivity (Intent intent, 
                Bundle options)

This method throws ActivityNotFoundException if there was no Activity found to run the given Intent.

Parameters
`intent`	`Intent`: The intent to start.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Throws
	android.content.ActivityNotFoundException

See also:

startActivityForResult

Added in API level 1

public void startActivityForResult (Intent intent, 
                int requestCode)

Same as calling startActivityForResult(android.content.Intent, int, android.os.Bundle) with no options.

Parameters
`intent`	`Intent`: The intent to start.
`requestCode`	`int`: If >= 0, this code will be returned in onActivityResult() when the activity exits.

Throws
	android.content.ActivityNotFoundException

See also:

startActivity(Intent)

startActivityForResult

Added in API level 16

public void startActivityForResult (Intent intent, 
                int requestCode, 
                Bundle options)

Launch an activity for which you would like a result when it finished. When this activity exits, your onActivityResult() method will be called with the given requestCode. Using a negative requestCode is the same as calling startActivity(Intent) (the activity is not launched as a sub-activity).

Note that this method should only be used with Intent protocols that are defined to return a result. In other protocols (such as Intent#ACTION_MAIN or Intent#ACTION_VIEW), you may not get the result when you expect. For example, if the activity you are launching uses Intent#FLAG_ACTIVITY_NEW_TASK, it will not run in your task and thus you will immediately receive a cancel result.

As a special case, if you call startActivityForResult() with a requestCode >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your activity, then your window will not be displayed until a result is returned back from the started activity. This is to avoid visible flickering when redirecting to another activity.

This method throws ActivityNotFoundException if there was no Activity found to run the given Intent.

Parameters
`intent`	`Intent`: The intent to start.
`requestCode`	`int`: If >= 0, this code will be returned in onActivityResult() when the activity exits.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Throws
	android.content.ActivityNotFoundException

See also:

startActivity(Intent)

startActivityFromChild

Added in API level 1
Deprecated in API level 30

public void startActivityFromChild (Activity child, 
                Intent intent, 
                int requestCode)

This method was deprecated in API level 30.
Use androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int)

Same as calling startActivityFromChild(android.app.Activity, android.content.Intent, int, android.os.Bundle) with no options.

Parameters
`child`	`Activity`: The activity making the call. This value cannot be `null`.
`intent`	`Intent`: The intent to start.
`requestCode`	`int`: Reply request code. < 0 if reply is not requested.

Throws
	android.content.ActivityNotFoundException

See also:

startActivityFromChild

Added in API level 16
Deprecated in API level 30

public void startActivityFromChild (Activity child, 
                Intent intent, 
                int requestCode, 
                Bundle options)

This method was deprecated in API level 30.
Use androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int,Bundle)

This is called when a child activity of this one calls its startActivity(Intent) or startActivityForResult(Intent, int) method.

This method throws ActivityNotFoundException if there was no Activity found to run the given Intent.

Parameters
`child`	`Activity`: The activity making the call. This value cannot be `null`.
`intent`	`Intent`: The intent to start.
`requestCode`	`int`: Reply request code. < 0 if reply is not requested.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Throws
	android.content.ActivityNotFoundException

See also:

startActivityFromFragment

Added in API level 16
Deprecated in API level 28

public void startActivityFromFragment (Fragment fragment, 
                Intent intent, 
                int requestCode, 
                Bundle options)

This method was deprecated in API level 28.
Use androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int,Bundle)

This is called when a Fragment in this activity calls its Fragment#startActivity or Fragment#startActivityForResult method.

This method throws ActivityNotFoundException if there was no Activity found to run the given Intent.

Parameters
`fragment`	`Fragment`: The fragment making the call. This value cannot be `null`.
`intent`	`Intent`: The intent to start.
`requestCode`	`int`: Reply request code. < 0 if reply is not requested.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Throws
	android.content.ActivityNotFoundException

See also:

startActivityFromFragment

Added in API level 11
Deprecated in API level 28

public void startActivityFromFragment (Fragment fragment, 
                Intent intent, 
                int requestCode)

This method was deprecated in API level 28.
Use androidx.fragment.app.FragmentActivity#startActivityFromFragment( androidx.fragment.app.Fragment,Intent,int)

Same as calling startActivityFromFragment(android.app.Fragment, android.content.Intent, int, android.os.Bundle) with no options.

Parameters
`fragment`	`Fragment`: The fragment making the call. This value cannot be `null`.
`intent`	`Intent`: The intent to start.
`requestCode`	`int`: Reply request code. < 0 if reply is not requested.

Throws
	android.content.ActivityNotFoundException

See also:

startActivityIfNeeded

Added in API level 16

public boolean startActivityIfNeeded (Intent intent, 
                int requestCode, 
                Bundle options)

A special variation to launch an activity only if a new activity instance is needed to handle the given Intent. In other words, this is just like startActivityForResult(android.content.Intent, int) except: if you are using the Intent#FLAG_ACTIVITY_SINGLE_TOP flag, or singleTask or singleTop launchMode, and the activity that handles intent is the same as your currently running activity, then a new instance is not needed. In this case, instead of the normal behavior of calling onNewIntent(Intent) this function will return and you can handle the Intent yourself.

This function can only be called from a top-level activity; if it is called from a child activity, a runtime exception will be thrown.

Parameters
`intent`	`Intent`: The intent to start. This value cannot be `null`.
`requestCode`	`int`: If >= 0, this code will be returned in onActivityResult() when the activity exits, as described in `startActivityForResult(Intent, int)`.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Returns
`boolean`	If a new activity was launched then true is returned; otherwise false is returned and you must handle the Intent yourself.

See also:

startActivityIfNeeded

Added in API level 1

public boolean startActivityIfNeeded (Intent intent, 
                int requestCode)

Same as calling startActivityIfNeeded(android.content.Intent, int, android.os.Bundle) with no options.

Parameters
`intent`	`Intent`: The intent to start. This value cannot be `null`.
`requestCode`	`int`: If >= 0, this code will be returned in onActivityResult() when the activity exits, as described in `startActivityForResult(Intent, int)`.

Returns
`boolean`	If a new activity was launched then true is returned; otherwise false is returned and you must handle the Intent yourself.

See also:

startIntentSender

Added in API level 5

public void startIntentSender (IntentSender intent, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags)

Same as calling startIntentSender(android.content.IntentSender, android.content.Intent, int, int, int, android.os.Bundle) with no options.

Parameters
`intent`	`IntentSender`: The IntentSender to launch.
`fillInIntent`	`Intent`: If non-null, this will be provided as the intent parameter to `IntentSender#sendIntent`.
`flagsMask`	`int`: Intent flags in the original IntentSender that you would like to change.
`flagsValues`	`int`: Desired values for any bits set in `flagsMask`
`extraFlags`	`int`: Always set to 0.

Throws
`IntentSender.SendIntentException`

startIntentSender

Added in API level 16

public void startIntentSender (IntentSender intent, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags, 
                Bundle options)

Like startActivity(android.content.Intent, android.os.Bundle), but taking a IntentSender to start; see startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle) for more information.

Parameters
`intent`	`IntentSender`: The IntentSender to launch.
`fillInIntent`	`Intent`: If non-null, this will be provided as the intent parameter to `IntentSender#sendIntent`.
`flagsMask`	`int`: Intent flags in the original IntentSender that you would like to change.
`flagsValues`	`int`: Desired values for any bits set in `flagsMask`
`extraFlags`	`int`: Always set to 0.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. If options have also been supplied by the IntentSender, options given here will override any that conflict with those given by the IntentSender. This value may be `null`.

Throws
`IntentSender.SendIntentException`

startIntentSenderForResult

Added in API level 5

public void startIntentSenderForResult (IntentSender intent, 
                int requestCode, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags)

Same as calling startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle) with no options.

Parameters
`intent`	`IntentSender`: The IntentSender to launch.
`requestCode`	`int`: If >= 0, this code will be returned in onActivityResult() when the activity exits.
`fillInIntent`	`Intent`: If non-null, this will be provided as the intent parameter to `IntentSender#sendIntent`.
`flagsMask`	`int`: Intent flags in the original IntentSender that you would like to change.
`flagsValues`	`int`: Desired values for any bits set in `flagsMask`
`extraFlags`	`int`: Always set to 0.

Throws
`IntentSender.SendIntentException`

startIntentSenderForResult

Added in API level 16

public void startIntentSenderForResult (IntentSender intent, 
                int requestCode, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags, 
                Bundle options)

Like startActivityForResult(android.content.Intent, int), but allowing you to use a IntentSender to describe the activity to be started. If the IntentSender is for an activity, that activity will be started as if you had called the regular startActivityForResult(android.content.Intent, int) here; otherwise, its associated action will be executed (such as sending a broadcast) as if you had called IntentSender.sendIntent on it.

Parameters
`intent`	`IntentSender`: The IntentSender to launch.
`requestCode`	`int`: If >= 0, this code will be returned in onActivityResult() when the activity exits.
`fillInIntent`	`Intent`: If non-null, this will be provided as the intent parameter to `IntentSender#sendIntent`.
`flagsMask`	`int`: Intent flags in the original IntentSender that you would like to change.
`flagsValues`	`int`: Desired values for any bits set in `flagsMask`
`extraFlags`	`int`: Always set to 0.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. If options have also been supplied by the IntentSender, options given here will override any that conflict with those given by the IntentSender. This value may be `null`.

Throws
`IntentSender.SendIntentException`

startIntentSenderFromChild

Added in API level 16
Deprecated in API level 30

public void startIntentSenderFromChild (Activity child, 
                IntentSender intent, 
                int requestCode, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags, 
                Bundle options)

This method was deprecated in API level 30.
Use startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle) instead.

Like startActivityFromChild(android.app.Activity, android.content.Intent, int), but taking a IntentSender; see startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int) for more information.

Parameters
`child`	`Activity`
`intent`	`IntentSender`
`requestCode`	`int`
`fillInIntent`	`Intent`
`flagsMask`	`int`
`flagsValues`	`int`
`extraFlags`	`int`
`options`	`Bundle`: This value may be `null`.

Throws
`IntentSender.SendIntentException`

startIntentSenderFromChild

Added in API level 5
Deprecated in API level 30

public void startIntentSenderFromChild (Activity child, 
                IntentSender intent, 
                int requestCode, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags)

This method was deprecated in API level 30.
Use startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int) instead.

Same as calling startIntentSenderFromChild(android.app.Activity, android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle) with no options.

Parameters
`child`	`Activity`
`intent`	`IntentSender`
`requestCode`	`int`
`fillInIntent`	`Intent`
`flagsMask`	`int`
`flagsValues`	`int`
`extraFlags`	`int`

Throws
`IntentSender.SendIntentException`

startLocalVoiceInteraction

Added in API level 24

public void startLocalVoiceInteraction (Bundle privateOptions)

Starts a local voice interaction session. When ready, onLocalVoiceInteractionStarted() is called. You can pass a bundle of private options to the registered voice interaction service.

Parameters
`privateOptions`	`Bundle`: a Bundle of private arguments to the current voice interaction service

startLockTask

Added in API level 21

public void startLockTask ()

Request to put this activity in a mode where the user is locked to a restricted set of applications.

If DevicePolicyManager#isLockTaskPermitted(String) returns true for this component, the current task will be launched directly into LockTask mode. Only apps allowlisted by DevicePolicyManager#setLockTaskPackages(ComponentName, String[]) can be launched while LockTask mode is active. The user will not be able to leave this mode until this activity calls stopLockTask(). Calling this method while the device is already in LockTask mode has no effect.

Otherwise, the current task will be launched into screen pinning mode. In this case, the system will prompt the user with a dialog requesting permission to use this mode. The user can exit at any time through instructions shown on the request dialog. Calling stopLockTask() will also terminate this mode.

Note: this method can only be called when the activity is foreground. That is, between onResume() and onPause().

See also:

startManagingCursor

Added in API level 1
Deprecated in API level 15

public void startManagingCursor (Cursor c)

This method was deprecated in API level 15.
Use the new CursorLoader class with LoaderManager instead; this is also available on older platforms through the Android compatibility package.

This method allows the activity to take care of managing the given Cursor's lifecycle for you based on the activity's lifecycle. That is, when the activity is stopped it will automatically call Cursor#deactivate on the given Cursor, and when it is later restarted it will call Cursor#requery for you. When the activity is destroyed, all managed Cursors will be closed automatically. If you are targeting Build.VERSION_CODES.HONEYCOMB or later, consider instead using LoaderManager instead, available via getLoaderManager().

Warning: Do not call Cursor#close() on cursor obtained from managedQuery(Uri, String, String, String, String), because the activity will do that for you at the appropriate time. However, if you call stopManagingCursor(Cursor) on a cursor from a managed query, the system will not automatically close the cursor and, in that case, you must call Cursor#close().

Parameters
`c`	`Cursor`: The Cursor to be managed.

See also:

startNextMatchingActivity

Added in API level 16

public boolean startNextMatchingActivity (Intent intent, 
                Bundle options)

Special version of starting an activity, for use when you are replacing other activity components. You can use this to hand the Intent off to the next Activity that can handle it. You typically call this in onCreate(Bundle) with the Intent returned by getIntent().

Parameters
`intent`	`Intent`: The intent to dispatch to the next activity. For correct behavior, this must be the same as the Intent that started your own activity; the only changes you can make are to the extras inside of it. This value cannot be `null`.
`options`	`Bundle`: Additional options for how the Activity should be started. See `Context.startActivity(Intent, Bundle)` Context.startActivity(Intent, Bundle)} for more details. This value may be `null`.

Returns
`boolean`	Returns a boolean indicating whether there was another Activity to start: true if there was a next activity to start, false if there wasn't. In general, if true is returned you will then want to call finish() on yourself.

startNextMatchingActivity

Added in API level 1

public boolean startNextMatchingActivity (Intent intent)

Same as calling startNextMatchingActivity(android.content.Intent, android.os.Bundle) with no options.

Parameters
`intent`	`Intent`: The intent to dispatch to the next activity. For correct behavior, this must be the same as the Intent that started your own activity; the only changes you can make are to the extras inside of it. This value cannot be `null`.

Returns
`boolean`	Returns a boolean indicating whether there was another Activity to start: true if there was a next activity to start, false if there wasn't. In general, if true is returned you will then want to call finish() on yourself.

startPostponedEnterTransition

Added in API level 21

public void startPostponedEnterTransition ()

Begin postponed transitions after postponeEnterTransition() was called. If postponeEnterTransition() was called, you must call startPostponedEnterTransition() to have your Activity start drawing.

startSearch

Added in API level 1

public void startSearch (String initialQuery, 
                boolean selectInitialQuery, 
                Bundle appSearchData, 
                boolean globalSearch)

This hook is called to launch the search UI.

It is typically called from onSearchRequested(), either directly from Activity.onSearchRequested() or from an overridden version in any given Activity. If your goal is simply to activate search, it is preferred to call onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal is to inject specific data such as context data, it is preferred to override onSearchRequested(), so that any callers to it will benefit from the override.

Note: when running in a Configuration#UI_MODE_TYPE_WATCH, use of this API is not supported.

Parameters
`initialQuery`	`String`: Any non-null non-empty string will be inserted as pre-entered text in the search query box.
`selectInitialQuery`	`boolean`: If true, the initial query will be preselected, which means that any further typing will replace it. This is useful for cases where an entire pre-formed query is being inserted. If false, the selection point will be placed at the end of the inserted query. This is useful when the inserted query is text that the user entered, and the user would expect to be able to keep typing. This parameter is only meaningful if initialQuery is a non-empty string.
`appSearchData`	`Bundle`: An application can insert application-specific context here, in order to improve quality or specificity of its own searches. This data will be returned with SEARCH intent(s). Null if no extra data is required. This value may be `null`.
`globalSearch`	`boolean`: If false, this will only launch the search that has been specifically defined by the application (which is usually defined as a local search). If no default search is defined in the current application or activity, global search will be launched. If true, this will always launch a platform-global (e.g. web-based) search instead.

See also:

stopLocalVoiceInteraction

Added in API level 24

public void stopLocalVoiceInteraction ()

Request to terminate the current voice interaction that was previously started using startLocalVoiceInteraction(android.os.Bundle). When the interaction is terminated, onLocalVoiceInteractionStopped() will be called.

stopLockTask

Added in API level 21

public void stopLockTask ()

Stop the current task from being locked.

Called to end the LockTask or screen pinning mode started by startLockTask(). This can only be called by activities that have called startLockTask() previously.

Note: If the device is in LockTask mode that is not initially started by this activity, then calling this method will not terminate the LockTask mode, but only finish its own task. The device will remain in LockTask mode, until the activity which started the LockTask mode calls this method, or until its allowlist authorization is revoked by DevicePolicyManager#setLockTaskPackages(ComponentName, String[]).

See also:

stopManagingCursor

Added in API level 1
Deprecated in API level 15

public void stopManagingCursor (Cursor c)

This method was deprecated in API level 15.
Use the new CursorLoader class with LoaderManager instead; this is also available on older platforms through the Android compatibility package.

Given a Cursor that was previously given to startManagingCursor(Cursor), stop the activity's management of that cursor.

Warning: After calling this method on a cursor from a managed query, the system will not automatically close the cursor and you must call Cursor#close().

Parameters
`c`	`Cursor`: The Cursor that was being managed.

See also:

startManagingCursor(Cursor)

takeKeyEvents

Added in API level 1

public void takeKeyEvents (boolean get)

Request that key events come to this activity. Use this if your activity has no views with focus, but the activity still wants a chance to process key events.

Parameters
`get`	`boolean`

See also:

Window.takeKeyEvents(boolean)

triggerSearch

Added in API level 5

public void triggerSearch (String query, 
                Bundle appSearchData)

Similar to startSearch(String, boolean, Bundle, boolean), but actually fires off the search query after invoking the search dialog. Made available for testing purposes.

Parameters
`query`	`String`: The query to trigger. If empty, the request will be ignored.
`appSearchData`	`Bundle`: An application can insert application-specific context here, in order to improve quality or specificity of its own searches. This data will be returned with SEARCH intent(s). Null if no extra data is required. This value may be `null`.

unregisterActivityLifecycleCallbacks

Added in API level 29

public void unregisterActivityLifecycleCallbacks (Application.ActivityLifecycleCallbacks callback)

Unregister an Application.ActivityLifecycleCallbacks previously registered with registerActivityLifecycleCallbacks(ActivityLifecycleCallbacks). It will not receive any further callbacks.

Parameters
`callback`	`Application.ActivityLifecycleCallbacks`: The callback instance to unregister This value cannot be `null`.

See also:

registerActivityLifecycleCallbacks(ActivityLifecycleCallbacks)

unregisterComponentCallbacks

Added in API level 14

public void unregisterComponentCallbacks (ComponentCallbacks callback)

Remove a ComponentCallbacks object that was previously registered with registerComponentCallbacks(android.content.ComponentCallbacks).

After Build.VERSION_CODES#TIRAMISU, the ComponentCallbacks will be unregistered to the base Context, and can be only used after attachBaseContext(android.content.Context)

Parameters
`callback`	`ComponentCallbacks`: The interface to call. This can be either a `ComponentCallbacks` or `ComponentCallbacks2` interface.

unregisterForContextMenu

Added in API level 1

public void unregisterForContextMenu (View view)

Prevents a context menu to be shown for the given view. This method will remove the OnCreateContextMenuListener on the view.

Parameters
`view`	`View`: The view that should stop showing a context menu.

See also:

registerForContextMenu(View)

unregisterScreenCaptureCallback

Added in API level 34

public void unregisterScreenCaptureCallback (Activity.ScreenCaptureCallback callback)

Unregisters a screen capture callback for this surface.
Requires Manifest.permission.DETECT_SCREEN_CAPTURE

Parameters
`callback`	`Activity.ScreenCaptureCallback`: This value cannot be `null`.

Protected methods

attachBaseContext

Added in API level 1

protected void attachBaseContext (Context newBase)

Set the base context for this ContextWrapper. All calls will then be delegated to the base context. Throws IllegalStateException if a base context has already been set.

Parameters
`newBase`	`Context`: The new base context for this wrapper.

onActivityResult

Added in API level 1

protected void onActivityResult (int requestCode, 
                int resultCode, 
                Intent data)

Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it. The resultCode will be RESULT_CANCELED if the activity explicitly returned that, didn't return any result, or crashed during its operation.

An activity can never receive a result in the resumed state. You can count on onResume() being called after this method, though not necessarily immediately after. If the activity was resumed, it will be paused and the result will be delivered, followed by onResume(). If the activity wasn't in the resumed state, then the result will be delivered, with onResume() called sometime later when the activity becomes active again.

This method is never invoked if your activity sets noHistory to true.

Parameters
`requestCode`	`int`: The integer request code originally supplied to startActivityForResult(), allowing you to identify who this result came from.
`resultCode`	`int`: The integer result code returned by the child activity through its setResult().
`data`	`Intent`: An Intent, which can return result data to the caller (various data can be attached to Intent "extras").

See also:

onApplyThemeResource

Added in API level 1

protected void onApplyThemeResource (Resources.Theme theme, 
                int resid, 
                boolean first)

Called by setTheme(Theme) and getTheme() to apply a theme resource to the current Theme object. May be overridden to change the default (simple) behavior. This method will not be called in multiple threads simultaneously.

Parameters
`theme`	`Resources.Theme`: the theme being modified
`resid`	`int`: the style resource being applied to `theme`
`first`	`boolean`: `true` if this is the first time a style is being applied to `theme`

onChildTitleChanged

Added in API level 1

protected void onChildTitleChanged (Activity childActivity, 
                CharSequence title)

Parameters
`childActivity`	`Activity`
`title`	`CharSequence`

onCreate

Added in API level 1

protected void onCreate (Bundle savedInstanceState)

Called when the activity is starting. This is where most initialization should go: calling setContentView(int) to inflate the activity's UI, using findViewById(int) to programmatically interact with widgets in the UI, calling managedQuery(android.net.Uri, java.lang.String[], java.lang.String, java.lang.String[], java.lang.String) to retrieve cursors for data being displayed, etc.

You can call finish() from within this function, in which case onDestroy() will be immediately called after onCreate(Bundle) without any of the rest of the activity lifecycle (onStart(), onResume(), onPause(), etc) executing.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

This method must be called from the main thread of your app.
If you override this method you must call through to the superclass implementation.

Parameters
`savedInstanceState`	`Bundle`: If the activity is being re-initialized after previously being shut down then this Bundle contains the data it most recently supplied in `onSaveInstanceState(Bundle)`. *Note: Otherwise it is null.*

See also:

onCreateDialog

Added in API level 1
Deprecated in API level 15

protected Dialog onCreateDialog (int id)

This method was deprecated in API level 15.
Old no-arguments version of onCreateDialog(int, android.os.Bundle).

Parameters
`id`	`int`

Returns
`Dialog`

onCreateDialog

Added in API level 8
Deprecated in API level 15

protected Dialog onCreateDialog (int id, 
                Bundle args)

This method was deprecated in API level 15.
Use the new DialogFragment class with FragmentManager instead; this is also available on older platforms through the Android compatibility package.

Callback for creating dialogs that are managed (saved and restored) for you by the activity. The default implementation calls through to onCreateDialog(int) for compatibility. If you are targeting Build.VERSION_CODES.HONEYCOMB or later, consider instead using a DialogFragment instead.

If you use showDialog(int), the activity will call through to this method the first time, and hang onto it thereafter. Any dialog that is created by this method will automatically be saved and restored for you, including whether it is showing.

If you would like the activity to manage saving and restoring dialogs for you, you should override this method and handle any ids that are passed to showDialog(int).

If you would like an opportunity to prepare your dialog before it is shown, override onPrepareDialog(int, android.app.Dialog, android.os.Bundle).

Parameters
`id`	`int`: The id of the dialog.
`args`	`Bundle`: The dialog arguments provided to `showDialog(int, android.os.Bundle)`.

Returns
`Dialog`	The dialog. If you return null, the dialog will not be created.

See also:

onDestroy

Added in API level 1

protected void onDestroy ()

Perform any final cleanup before an activity is destroyed. This can happen either because the activity is finishing (someone called finish() on it), or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these two scenarios with the isFinishing() method.

Note: do not count on this method being called as a place for saving data! For example, if an activity is editing data in a content provider, those edits should be committed in either onPause() or onSaveInstanceState(Bundle), not here. This method is usually implemented to free resources like threads that are associated with an activity, so that a destroyed activity does not leave such things around while the rest of its application is still running. There are situations where the system will simply kill the activity's hosting process without calling this method (or any others) in it, so it should not be used to do things that are intended to remain around after the process goes away.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onNewIntent

Added in API level 1

protected void onNewIntent (Intent intent)

This is called for activities that set launchMode to "singleTop" in their package, or if a client used the Intent#FLAG_ACTIVITY_SINGLE_TOP flag when calling startActivity(Intent). In either case, when the activity is re-launched while at the top of the activity stack instead of a new instance of the activity being started, onNewIntent() will be called on the existing instance with the Intent that was used to re-launch it.

An activity can never receive a new intent in the resumed state. You can count on onResume() being called after this method, though not necessarily immediately after the completion of this callback. If the activity was resumed, it will be paused and new intent will be delivered, followed by onResume(). If the activity wasn't in the resumed state, then new intent can be delivered immediately, with onResume() called sometime later when activity becomes active again.

Note that getIntent() still returns the original Intent. You can use setIntent(android.content.Intent) to update it to this new Intent.

Parameters
`intent`	`Intent`: The new intent that was used to start the activity

See also:

onPause

Added in API level 1

protected void onPause ()

Called as part of the activity lifecycle when the user no longer actively interacts with the activity, but it is still visible on screen. The counterpart to onResume().

When activity B is launched in front of activity A, this callback will be invoked on A. B will not be created until A's onPause() returns, so be sure to not do anything lengthy here.

This callback is mostly used for saving any persistent state the activity is editing, to present a "edit in place" model to the user and making sure nothing is lost if there are not enough resources to start the new activity without first killing this one. This is also a good place to stop things that consume a noticeable amount of CPU in order to make the switch to the next activity as fast as possible.

On platform versions prior to Build.VERSION_CODES.Q this is also a good place to try to close exclusive-access devices or to release access to singleton resources. Starting with Build.VERSION_CODES.Q there can be multiple resumed activities in the system at the same time, so onTopResumedActivityChanged(boolean) should be used for that purpose instead.

If an activity is launched on top, after receiving this call you will usually receive a following call to onStop() (after the next activity has been resumed and displayed above). However in some cases there will be a direct call back to onResume() without going through the stopped state. An activity can also rest in paused state in some cases when in multi-window mode, still visible to user.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onPostCreate

Added in API level 1

protected void onPostCreate (Bundle savedInstanceState)

Called when activity start-up is complete (after onStart() and onRestoreInstanceState(Bundle) have been called). Applications will generally not implement this method; it is intended for system classes to do final initialization after application code has run.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

Parameters
`savedInstanceState`	`Bundle`: If the activity is being re-initialized after previously being shut down then this Bundle contains the data it most recently supplied in `onSaveInstanceState(Bundle)`. *Note: Otherwise it is null.*

See also:

onCreate(Bundle)

onPostResume

Added in API level 1

protected void onPostResume ()

Called when activity resume is complete (after onResume() has been called). Applications will generally not implement this method; it is intended for system classes to do final setup after application resume code has run.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onResume()

onPrepareDialog

Added in API level 8
Deprecated in API level 15

protected void onPrepareDialog (int id, 
                Dialog dialog, 
                Bundle args)

This method was deprecated in API level 15.
Use the new DialogFragment class with FragmentManager instead; this is also available on older platforms through the Android compatibility package.

Provides an opportunity to prepare a managed dialog before it is being shown. The default implementation calls through to onPrepareDialog(int, android.app.Dialog) for compatibility.

Override this if you need to update a managed dialog based on the state of the application each time it is shown. For example, a time picker dialog might want to be updated with the current time. You should call through to the superclass's implementation. The default implementation will set this Activity as the owner activity on the Dialog.

Parameters
`id`	`int`: The id of the managed dialog.
`dialog`	`Dialog`: The dialog.
`args`	`Bundle`: The dialog arguments provided to `showDialog(int, android.os.Bundle)`.

See also:

onPrepareDialog

Added in API level 1
Deprecated in API level 15

protected void onPrepareDialog (int id, 
                Dialog dialog)

This method was deprecated in API level 15.
Old no-arguments version of onPrepareDialog(int, android.app.Dialog, android.os.Bundle).

Parameters
`id`	`int`
`dialog`	`Dialog`

onRestart

Added in API level 1

protected void onRestart ()

Called after onStop() when the current activity is being re-displayed to the user (the user has navigated back to it). It will be followed by onStart() and then onResume().

For activities that are using raw Cursor objects (instead of creating them through managedQuery(android.net.Uri, java.lang.String[], java.lang.String, java.lang.String[], java.lang.String), this is usually the place where the cursor should be requeried (because you had deactivated it in onStop().

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onRestoreInstanceState

Added in API level 1

protected void onRestoreInstanceState (Bundle savedInstanceState)

This method is called after onStart() when the activity is being re-initialized from a previously saved state, given here in savedInstanceState. Most implementations will simply use onCreate(Bundle) to restore their state, but it is sometimes convenient to do it here after all of the initialization has been done or to allow subclasses to decide whether to use your default implementation. The default implementation of this method performs a restore of any view state that had previously been frozen by onSaveInstanceState(Bundle).

This method is called between onStart() and onPostCreate(Bundle). This method is called only when recreating an activity; the method isn't invoked if onStart() is called for any other reason.

Parameters
`savedInstanceState`	`Bundle`: the data most recently supplied in `onSaveInstanceState(Bundle)`. This value cannot be `null`.

See also:

onResume

Added in API level 1

protected void onResume ()

Called after onRestoreInstanceState(Bundle), onRestart(), or onPause(). This is usually a hint for your activity to start interacting with the user, which is a good indicator that the activity became active and ready to receive input. This sometimes could also be a transit state toward another resting state. For instance, an activity may be relaunched to onPause() due to configuration changes and the activity was visible, but wasn't the top-most activity of an activity task. onResume() is guaranteed to be called before onPause() in this case which honors the activity lifecycle policy and the activity eventually rests in onPause().

On platform versions prior to Build.VERSION_CODES.Q this is also a good place to try to open exclusive-access devices or to get access to singleton resources. Starting with Build.VERSION_CODES.Q there can be multiple resumed activities in the system simultaneously, so onTopResumedActivityChanged(boolean) should be used for that purpose instead.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onSaveInstanceState

Added in API level 1

protected void onSaveInstanceState (Bundle outState)

Called to retrieve per-instance state from an activity before being killed so that the state can be restored in onCreate(Bundle) or onRestoreInstanceState(Bundle) (the Bundle populated by this method will be passed to both).

This method is called before an activity may be killed so that when it comes back some time in the future it can restore its state. For example, if activity B is launched in front of activity A, and at some point activity A is killed to reclaim resources, activity A will have a chance to save the current state of its user interface via this method so that when the user returns to activity A, the state of the user interface can be restored via onCreate(Bundle) or onRestoreInstanceState(Bundle).

Do not confuse this method with activity lifecycle callbacks such as onPause(), which is always called when the user no longer actively interacts with an activity, or onStop() which is called when activity becomes invisible. One example of when onPause() and onStop() is called and not this method is when a user navigates back from activity B to activity A: there is no need to call onSaveInstanceState(Bundle) on B because that particular instance will never be restored, so the system avoids calling it. An example when onPause() is called and not onSaveInstanceState(Bundle) is when activity B is launched in front of activity A: the system may avoid calling onSaveInstanceState(Bundle) on activity A if it isn't killed during the lifetime of B since the state of the user interface of A will stay intact.

The default implementation takes care of most of the UI per-instance state for you by calling View.onSaveInstanceState() on each view in the hierarchy that has an id, and by saving the id of the currently focused view (all of which is restored by the default implementation of onRestoreInstanceState(Bundle)). If you override this method to save additional information not captured by each individual view, you will likely want to call through to the default implementation, otherwise be prepared to save all of the state of each view yourself.

If called, this method will occur after onStop() for applications targeting platforms starting with Build.VERSION_CODES.P. For applications targeting earlier platform versions this method will occur before onStop() and there are no guarantees about whether it will occur before or after onPause().

Parameters
`outState`	`Bundle`: Bundle in which to place your saved state. This value cannot be `null`.

See also:

onStart

Added in API level 1

protected void onStart ()

Called after onCreate(Bundle) — or after onRestart() when the activity had been stopped, but is now again being displayed to the user. It will usually be followed by onResume(). This is a good place to begin drawing visual elements, running animations, etc.

You can call finish() from within this function, in which case onStop() will be immediately called after onStart() without the lifecycle transitions in-between (onResume(), onPause(), etc) executing.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onStop

Added in API level 1

protected void onStop ()

Called when you are no longer visible to the user. You will next receive either onRestart(), onDestroy(), or nothing, depending on later user activity. This is a good place to stop refreshing UI, running animations and other visual things.

Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.

If you override this method you must call through to the superclass implementation.

See also:

onTitleChanged

Added in API level 1

protected void onTitleChanged (CharSequence title, 
                int color)

Parameters
`title`	`CharSequence`
`color`	`int`

onUserLeaveHint

Added in API level 3

protected void onUserLeaveHint ()

Called as part of the activity lifecycle when an activity is about to go into the background as the result of user choice. For example, when the user presses the Home key, onUserLeaveHint() will be called, but when an incoming phone call causes the in-call Activity to be automatically brought to the foreground, onUserLeaveHint() will not be called on the activity being interrupted. In cases when it is invoked, this method is called right before the activity's onPause() callback.

This callback and onUserInteraction() are intended to help activities manage status bar notifications intelligently; specifically, for helping activities determine the proper time to cancel a notification.

See also:

Activity

Developer Guides

Fragments

Activity Lifecycle

Configuration Changes

Starting Activities and Getting Results

Saving Persistent State

Permissions

Process Lifecycle

Summary

Nested classes

Constants

Inherited constants

Fields

Public constructors

Public methods

Protected methods

Inherited methods

Constants

DEFAULT_KEYS_DIALER

DEFAULT_KEYS_DISABLE

DEFAULT_KEYS_SEARCH_GLOBAL

DEFAULT_KEYS_SEARCH_LOCAL

DEFAULT_KEYS_SHORTCUT

FULLSCREEN_MODE_REQUEST_ENTER

FULLSCREEN_MODE_REQUEST_EXIT

OVERRIDE_TRANSITION_CLOSE

OVERRIDE_TRANSITION_OPEN

RESULT_CANCELED

RESULT_FIRST_USER

RESULT_OK

Fields

FOCUSED_STATE_SET

Public constructors

Activity

Public methods

addContentView

clearOverrideActivityTransition

closeContextMenu

closeOptionsMenu

createPendingResult

dismissDialog

dismissKeyboardShortcutsHelper

dispatchGenericMotionEvent

dispatchKeyEvent

dispatchKeyShortcutEvent

dispatchPopulateAccessibilityEvent

dispatchTouchEvent

dispatchTrackballEvent

dump

enterPictureInPictureMode

enterPictureInPictureMode

findViewById

finish

finishActivity

finishActivityFromChild

finishAffinity

finishAfterTransition

finishAndRemoveTask

finishFromChild

getActionBar

getApplication

getCaller

getCallingActivity

getCallingPackage

getChangingConfigurations

getComponentName

getContentScene

getContentTransitionManager

getCurrentCaller

getCurrentFocus

getFragmentManager

getInitialCaller

getIntent

getLastNonConfigurationInstance

getLaunchedFromPackage

getLaunchedFromUid

getLayoutInflater

getLoaderManager

getLocalClassName