AppCompatActivity

Kotlin |Java

open class AppCompatActivity : FragmentActivity, AppCompatCallback, TaskStackBuilder.SupportParentable, ActionBarDrawerToggle.DelegateProvider

androidx.activity.ComponentActivity
↳	androidx.fragment.app.FragmentActivity
	↳	androidx.appcompat.app.AppCompatActivity

Base class for activities that wish to use some of the newer platform features on older Android devices. Some of these backported features include:

Using the action bar, including action items, navigation modes and more with the setSupportActionBar(Toolbar) API.
Built-in switching between light and dark themes by using the Theme.AppCompat.DayNight theme and AppCompatDelegate#setDefaultNightMode(int) API.
Integration with DrawerLayout by using the getDrawerToggleDelegate() API.

Note that every activity that extends this class has to be themed with Theme.AppCompat or a theme that extends that theme.

Summary

Public constructors
`<init>()` Default constructor for AppCompatActivity.
`<init>(@LayoutRes contentLayoutId: Int)` Alternate constructor that can be used to provide a default layout that will be inflated as part of `super.onCreate(savedInstanceState)`.

Public methods
open Unit	`addContentView(view: View!, params: LayoutParams!)`
open Unit	`closeOptionsMenu()`
open Boolean	`dispatchKeyEvent(event: KeyEvent!)`
open T	`findViewById(@IdRes id: Int)`
open AppCompatDelegate	`getDelegate()`
open ActionBarDrawerToggle.Delegate?	`getDrawerToggleDelegate()`
open MenuInflater	`getMenuInflater()`
open Resources!	`getResources()`
open ActionBar?	`getSupportActionBar()` Support library version of `android.app.Activity#getActionBar`.
open Intent?	`getSupportParentActivityIntent()` Obtain an `android.content.Intent` that will launch an explicit target activity specified by sourceActivity's `androidx.core.app.NavUtils#PARENT_ACTIVITY` <meta-data> element in the application's manifest.
open Unit	`invalidateOptionsMenu()`
open Unit	`onConfigurationChanged(@NonNull newConfig: Configuration)`
open Unit	`onContentChanged()`
open Unit	`onCreateSupportNavigateUpTaskStack(@NonNull builder: TaskStackBuilder)` Support version of `onCreateNavigateUpTaskStack(android.app.TaskStackBuilder)`.
open Boolean	`onKeyDown(keyCode: Int, event: KeyEvent!)`
Boolean	`onMenuItemSelected(featureId: Int, @NonNull item: MenuItem)`
open Boolean	`onMenuOpened(featureId: Int, menu: Menu)` Please note: AppCompat uses its own feature id for the action bar: `FEATURE_SUPPORT_ACTION_BAR`.
open Unit	`onPanelClosed(featureId: Int, @NonNull menu: Menu)` Call onOptionsMenuClosed() on fragments.
open Unit	`onPrepareSupportNavigateUpTaskStack(@NonNull builder: TaskStackBuilder)` Support version of `onPrepareNavigateUpTaskStack(android.app.TaskStackBuilder)`.
open Unit	`onSupportActionModeFinished(@NonNull mode: ActionMode)` Notifies the activity that a support action mode has finished.
open Unit	`onSupportActionModeStarted(@NonNull mode: ActionMode)` Notifies the Activity that a support action mode has been started.
open Unit	`onSupportContentChanged()`
open Boolean	`onSupportNavigateUp()` This method is called whenever the user chooses to navigate Up within your application's activity hierarchy from the action bar.
open ActionMode?	`onWindowStartingSupportActionMode(@NonNull callback: ActionMode.Callback)` Called when a support action mode is being started for this window.
open Unit	`openOptionsMenu()`
open Unit	`setContentView(@LayoutRes layoutResID: Int)`
open Unit	`setContentView(view: View!)`
open Unit	`setContentView(view: View!, params: LayoutParams!)`
open Unit	`setSupportActionBar(@Nullable toolbar: Toolbar?)` Set a `Toolbar` to act as the `androidx.appcompat.app.ActionBar` for this Activity window.
open Unit	`setSupportProgress(progress: Int)`
open Unit	`setSupportProgressBarIndeterminate(indeterminate: Boolean)`
open Unit	`setSupportProgressBarIndeterminateVisibility(visible: Boolean)`
open Unit	`setSupportProgressBarVisibility(visible: Boolean)`
open Unit	`setTheme(@StyleRes resId: Int)`
open ActionMode?	`startSupportActionMode(@NonNull callback: ActionMode.Callback)` Start an action mode.
open Unit	`supportInvalidateOptionsMenu()`
open Unit	`supportNavigateUpTo(@NonNull upIntent: Intent)` Navigate from sourceActivity to the activity specified by upIntent, finishing sourceActivity in the process.
open Boolean	`supportRequestWindowFeature(featureId: Int)` Enable extended support library window features.
open Boolean	`supportShouldUpRecreateTask(@NonNull targetIntent: Intent)` Returns true if sourceActivity should recreate the task when navigating 'up' by using targetIntent.

Protected methods
open Unit	`attachBaseContext(newBase: Context!)`
open Unit	`onDestroy()`
open Unit	`onNightModeChanged(mode: Int)` Called when the night mode has changed.
open Unit	`onPostCreate(@Nullable savedInstanceState: Bundle?)`
open Unit	`onPostResume()`
open Unit	`onStart()`
open Unit	`onStop()`
open Unit	`onTitleChanged(title: CharSequence!, color: Int)`

Inherited functions

From class ComponentActivity

`Unit`	`addContentView(view: View!, params: LayoutParams!)`
`Unit`	`addOnContextAvailableListener(@NonNull listener: OnContextAvailableListener)` Add a new `OnContextAvailableListener` for receiving a callback for when this class is associated with a `android.content.Context`. Listeners are triggered in the order they are added when added before the Context is available. Listeners added after the context has been made available will have the Context synchronously delivered to them as part of this call. Any listener added here will receive a callback as part of `super.onCreate()`, but importantly before any other logic is done (including calling through to the framework `Activity#onCreate(Bundle)` with the exception of restoring the state of the `SavedStateRegistry` for use in your listener.
`ActivityResultRegistry`	`getActivityResultRegistry()` Get the `ActivityResultRegistry` associated with this activity.
`ViewModelProvider.Factory`	`getDefaultViewModelProviderFactory()` Returns the default `ViewModelProvider.Factory` that should be used when no custom `Factory` is provided to the `ViewModelProvider` constructors. The extras of `getIntent()` when this is first called will be used as the defaults to any `androidx.lifecycle.SavedStateHandle` passed to a view model created using this factory.
`Any?`	`getLastCustomNonConfigurationInstance()` Return the value previously returned from `onRetainCustomNonConfigurationInstance()`.
`Lifecycle`	`getLifecycle()` Returns the Lifecycle of the provider. Overriding this method is no longer supported and this method will be made `final` in a future version of ComponentActivity. If you do override this method, you `must`: Return an instance of `LifecycleRegistry` Lazily initialize your LifecycleRegistry object when this is first called. Note that this method will be called in the super classes' constructor, before any field initialization or object state creation is complete.
`OnBackPressedDispatcher`	`getOnBackPressedDispatcher()` Retrieve the `OnBackPressedDispatcher` that will be triggered when `onBackPressed()` is called.
`SavedStateRegistry`	`getSavedStateRegistry()`
`ViewModelStore`	`getViewModelStore()` Returns the `ViewModelStore` associated with this activity Overriding this method is no longer supported and this method will be made `final` in a future version of ComponentActivity.
`Unit`	`onBackPressed()` Called when the activity has detected the user's press of the back key. The `OnBackPressedDispatcher` will be given a chance to handle the back button before the default behavior of `android.app.Activity#onBackPressed()` is invoked.
`Any?`	`onRetainCustomNonConfigurationInstance()` Use this instead of `onRetainNonConfigurationInstance()`. Retrieve later with `getLastCustomNonConfigurationInstance()`.
`Any?`	`onRetainNonConfigurationInstance()` Retain all appropriate non-config state. You can NOT override this yourself! Use a `androidx.lifecycle.ViewModel` if you want to retain your own non config state.
`Unit`	`onSaveInstanceState(@NonNull outState: Bundle)`
`Context?`	`peekAvailableContext()`
`ActivityResultLauncher<I>`	`registerForActivityResult(@NonNull contract: ActivityResultContract<I, O>, @NonNull registry: ActivityResultRegistry, @NonNull callback: ActivityResultCallback<O>)`
`ActivityResultLauncher<I>`	`registerForActivityResult(@NonNull contract: ActivityResultContract<I, O>, @NonNull callback: ActivityResultCallback<O>)`
`Unit`	`removeOnContextAvailableListener(@NonNull listener: OnContextAvailableListener)`
`Unit`	`setContentView(@LayoutRes layoutResID: Int)`
`Unit`	`setContentView(view: View!)`
`Unit`	`setContentView(view: View!, params: LayoutParams!)`
`Unit`	`startActivityForResult(intent: Intent!, requestCode: Int)`
`Unit`	`startActivityForResult(intent: Intent!, requestCode: Int, @Nullable options: Bundle?)`
`Unit`	`startIntentSenderForResult(intent: IntentSender!, requestCode: Int, @Nullable fillInIntent: Intent?, flagsMask: Int, flagsValues: Int, extraFlags: Int)`
`Unit`	`startIntentSenderForResult(intent: IntentSender!, requestCode: Int, @Nullable fillInIntent: Intent?, flagsMask: Int, flagsValues: Int, extraFlags: Int, @Nullable options: Bundle?)`

From class FragmentActivity

`Unit`	`dump(@NonNull prefix: String, @Nullable fd: FileDescriptor?, @NonNull writer: PrintWriter, @Nullable args: Array<String!>?)` Print the Activity's state into the given stream. This gets invoked if you run "adb shell dumpsys activity ".
`FragmentManager`	`getSupportFragmentManager()` Return the FragmentManager for interacting with fragments associated with this activity.
`LoaderManager`	`getSupportLoaderManager()`
`Unit`	`onActivityResult(requestCode: Int, resultCode: Int, @Nullable data: Intent?)`
`Unit`	`onAttachFragment(@NonNull fragment: Fragment)` Called when a fragment is attached to the activity. This is called after the attached fragment's `onAttach` and before the attached fragment's `onCreate` if the fragment has not yet had a previous call to `onCreate`.
`Unit`	`onCreate(@Nullable savedInstanceState: Bundle?)` Perform initialization of all fragments.
`Boolean`	`onCreatePanelMenu(featureId: Int, @NonNull menu: Menu)` Dispatch to Fragment.onCreateOptionsMenu().
`View?`	`onCreateView(@Nullable parent: View?, @NonNull name: String, @NonNull context: Context, @NonNull attrs: AttributeSet)`
`View?`	`onCreateView(@NonNull name: String, @NonNull context: Context, @NonNull attrs: AttributeSet)`
`Unit`	`onLowMemory()` Dispatch onLowMemory() to all fragments.
`Unit`	`onMultiWindowModeChanged(isInMultiWindowMode: Boolean)` Note: If you override this method you must call `super.onMultiWindowModeChanged` to correctly dispatch the event to support fragments attached to this activity.
`Unit`	`onNewIntent(intent: Intent!)` Handle onNewIntent() to inform the fragment manager that the state is not saved. If you are handling new intents and may be making changes to the fragment state, you want to be sure to call through to the super-class here first. Otherwise, if your state is saved but the activity is not stopped, you could get an onNewIntent() call which happens before onResume() and trying to perform fragment operations at that point will throw IllegalStateException because the fragment manager thinks the state is still saved.
`Unit`	`onPause()` Dispatch onPause() to fragments.
`Unit`	`onPictureInPictureModeChanged(isInPictureInPictureMode: Boolean)`