Added in API level 17

DreamService

Kotlin |Java

public class DreamService
extends Service implements Window.Callback

java.lang.Object
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	android.app.Service
			↳	android.service.dreams.DreamService

Extend this class to implement a custom dream (available to the user as a "Daydream").

Dreams are interactive screensavers launched when a charging device is idle, or docked in a desk dock. Dreams provide another modality for apps to express themselves, tailored for an exhibition/lean-back experience.

The DreamService lifecycle is as follows:

onAttachedToWindow()
Use this for initial setup, such as calling setContentView().
onDreamingStarted()
Your dream has started, so you should begin animations or other behaviors here.
onDreamingStopped()
Use this to stop the things you started in onDreamingStarted().
onDetachedFromWindow()
Use this to dismantle resources (for example, detach from handlers and listeners).

In addition, onCreate and onDestroy (from the Service interface) will also be called, but initialization and teardown should be done by overriding the hooks above.

To be available to the system, your DreamService should be declared in the manifest as follows (note: when targeting API level 21 and above, you must declare the service in your app manifest file with the Manifest.permission.BIND_DREAM_SERVICE permission):

 <service
     android:name=".MyDream"
     android:exported="true"
     android:icon="@drawable/my_icon"
     android:label="@string/my_dream_label"
     android:permission="android.permission.BIND_DREAM_SERVICE">

     <intent-filter>
         <action android:name="android.service.dreams.DreamService" />
         <category android:name="android.intent.category.DEFAULT" />
     </intent-filter>

     <!-- Point to additional information for this dream (optional) -->
     <meta-data
         android:name="android.service.dream"
         android:resource="@xml/my_dream" />
 </service>

If specified with the <meta-data> element, additional information for the dream is defined using the <dream> element in a separate XML file. For example:

res/xml/my_dream.xml

 <dream xmlns:android="http://schemas.android.com/apk/res/android"
     android:previewImage="@drawable/screensaver_preview"
     android:showClockAndComplications="true"
     android:settingsActivity="com.example.app/.MyDreamSettingsActivity" />

android:previewImage specifies a preview image to display in the screensavers grid in Settings. android:settingsActivity makes a Settings button available alongside your dream's listing in the system settings, which when pressed opens the specified activity. android:showClockAndComplications can be set to true to indicate that a clock and other complications may be shown above the screensaver. (This is currently only available on large-screen devices.)

Interactive screensavers that require users to swipe near areas reserved for system gestures can use the Window.setSystemGestureExclusionRects API to exclude areas that overlap system gesture areas. See https://developer.android.com/develop/ui/views/touch-and-input/gestures/gesturenav#games for more information.

To specify your dream layout, call setContentView(View), typically during the onAttachedToWindow() callback. For example:

 public class MyDream extends DreamService {

     @Override
     public void onAttachedToWindow() {
         super.onAttachedToWindow();

         // Exit dream upon user touch
         setInteractive(false);
         // Hide system UI
         setFullscreen(true);
         // Set the dream layout
         setContentView(R.layout.dream);
     }
 }

Summary

Constants
`String`	`DREAM_META_DATA` Name under which a Dream publishes information about itself.
`String`	`SERVICE_INTERFACE` The `Intent` that must be declared as handled by the service.

Inherited constants

From class android.app.Service

`int`	`START_CONTINUATION_MASK` Bits returned by `onStartCommand(Intent, int, int)` describing how to continue the service if it is killed.
`int`	`START_FLAG_REDELIVERY` This flag is set in `onStartCommand(Intent, int, int)` if the Intent is a re-delivery of a previously delivered intent, because the service had previously returned `START_REDELIVER_INTENT` but had been killed before calling `stopSelf(int)` for that Intent.
`int`	`START_FLAG_RETRY` This flag is set in `onStartCommand(Intent, int, int)` if the Intent is a retry because the original attempt never got to or returned from `onStartCommand(android.content.Intent, int, int)`.
`int`	`START_NOT_STICKY` Constant to return from `onStartCommand(Intent, int, int)`: if this service's process is killed while it is started (after returning from `onStartCommand(Intent, int, int)`), and there are no new start intents to deliver to it, then take the service out of the started state and don't recreate until a future explicit call to `Context.startService(Intent)`.
`int`	`START_REDELIVER_INTENT` Constant to return from `onStartCommand(Intent, int, int)`: if this service's process is killed while it is started (after returning from `onStartCommand(Intent, int, int)`), then it will be scheduled for a restart and the last delivered Intent re-delivered to it again via `onStartCommand(Intent, int, int)`.
`int`	`START_STICKY` Constant to return from `onStartCommand(Intent, int, int)`: if this service's process is killed while it is started (after returning from `onStartCommand(Intent, int, int)`), then leave it in the started state but don't retain this delivered intent.
`int`	`START_STICKY_COMPATIBILITY` Constant to return from `onStartCommand(Intent, int, int)`: compatibility version of `START_STICKY` that does not guarantee that `onStartCommand(Intent, int, int)` will be called again after being killed.
`int`	`STOP_FOREGROUND_DETACH` Selector for `stopForeground(int)`: if set, the notification previously supplied to `startForeground(int, Notification)` will be detached from the service's lifecycle.
`int`	`STOP_FOREGROUND_LEGACY` This constant was deprecated in API level 33. Use `STOP_FOREGROUND_DETACH` instead. The legacy behavior was inconsistent, leading to bugs around unpredictable results.
`int`	`STOP_FOREGROUND_REMOVE` Selector for `stopForeground(int)`: if supplied, the notification previously supplied to `startForeground(int, Notification)` will be cancelled and removed from display.

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`	`ADVANCED_PROTECTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `AdvancedProtectionManager`
`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_FUNCTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `AppFunctionManager` for executing app functions.
`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`	`CHOOSER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `ChooserManager`.
`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`	`KEYSTORE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `KeyStoreManager` for accessing Android Keystore functions.
`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_QUALITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `MediaQualityManager` for standardize picture and audio API parameters.
`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`	`SATELLITE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `SatelliteManager` for accessing satellite functionality.
`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_PHONE_NUMBER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `PhoneNumberManager` for parsing phone numbers.
`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`	`TETHERING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TetheringManager` for managing tethering functions.
`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_AD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TvAdManager` for interacting with TV client-side advertisement services on the device.
`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.

Public constructors
`DreamService()`

Public methods
`void`	`addContentView(View view, ViewGroup.LayoutParams params)` Adds a view to the Dream's window, leaving other content views in place.
`boolean`	`dispatchGenericMotionEvent(MotionEvent event)` 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 event)` Called to process touch screen events.
`boolean`	`dispatchTrackballEvent(MotionEvent event)` Called to process trackball events.
`<T extends View> T`	`findViewById(int id)` Finds a view that was identified by the id attribute from the XML that was processed in `onCreate()`.
`final void`	`finish()` Stops the dream and detaches from the window.
`Window`	`getWindow()` Retrieves the current `Window` for the dream.
`WindowManager`	`getWindowManager()` Retrieves the current `WindowManager` for the dream.
`boolean`	`isFullscreen()` Returns whether this dream is in fullscreen mode.
`boolean`	`isInteractive()` Returns whether this dream is interactive.
`boolean`	`isScreenBright()` Returns whether this dream keeps the screen bright while dreaming.
`void`	`onActionModeFinished(ActionMode mode)` Called when an action mode has been finished.
`void`	`onActionModeStarted(ActionMode mode)` Called when an action mode has been started.
`void`	`onAttachedToWindow()` Called when the window has been attached to the window manager.
`final IBinder`	`onBind(Intent intent)` Return the communication channel to the service.
`void`	`onContentChanged()` This hook is called whenever the content view of the screen changes (due to a call to `Window.setContentView` or `Window.addContentView`).
`void`	`onCreate()` Called when this Dream is constructed.
`boolean`	`onCreatePanelMenu(int featureId, Menu menu)` Initialize the contents of the menu for panel 'featureId'.
`View`	`onCreatePanelView(int featureId)` Instantiate the view to display in the panel for 'featureId'.
`void`	`onDestroy()` Called by the system to notify a Service that it is no longer used and is being removed.
`void`	`onDetachedFromWindow()` Called when the window has been detached from the window manager.
`void`	`onDreamingStarted()` Called when the dream's window has been created and is visible and animation may now begin.
`void`	`onDreamingStopped()` Called when this Dream is stopped, either by external request or by calling finish(), before the window has been removed.
`boolean`	`onMenuItemSelected(int featureId, MenuItem item)` Called when a panel's menu item has been selected by the user.
`boolean`	`onMenuOpened(int featureId, Menu menu)` Called when a panel's menu is opened by the user.
`void`	`onPanelClosed(int featureId, Menu menu)` Called when a panel is being closed.
`boolean`	`onPreparePanel(int featureId, View view, Menu menu)` Prepare a panel to be displayed.
`boolean`	`onSearchRequested()` Called when the user signals the desire to start a search.
`boolean`	`onSearchRequested(SearchEvent event)` Called when the user signals the desire to start a search.
`boolean`	`onUnbind(Intent intent)` Called when all clients have disconnected from a particular interface published by the service.
`void`	`onWakeUp()` Called when the dream is being asked to stop itself and wake.
`void`	`onWindowAttributesChanged(WindowManager.LayoutParams attrs)` This is called whenever the current window attributes change.
`void`	`onWindowFocusChanged(boolean hasFocus)` This hook is called whenever the window focus changes.
`ActionMode`	`onWindowStartingActionMode(ActionMode.Callback callback)` Called when an action mode is being started for this window.
`ActionMode`	`onWindowStartingActionMode(ActionMode.Callback callback, int type)` Called when an action mode is being started for this window.
`final <T extends View> T`	`requireViewById(int id)` Finds a view that was identified by the id attribute from the XML that was processed in `onCreate()`, or throws an IllegalArgumentException if the ID is invalid or there is no matching view in the hierarchy.
`void`	`setContentView(View view)` Sets a view to be the content view for this Dream.
`void`	`setContentView(int layoutResID)` Inflates a layout resource and set it to be the content view for this Dream.
`void`	`setContentView(View view, ViewGroup.LayoutParams params)` Sets a view to be the content view for this Dream.
`void`	`setFullscreen(boolean fullscreen)` Controls `WindowManager.LayoutParams.FLAG_FULLSCREEN` on the dream's window.
`void`	`setInteractive(boolean interactive)` Marks this dream as interactive to receive input events.
`void`	`setScreenBright(boolean screenBright)` Marks this dream as keeping the screen bright while dreaming.
`final void`	`wakeUp()` Wakes the dream up gently.

Protected methods
`void`	`dump(FileDescriptor fd, PrintWriter pw, String[] args)` Print the Service's state into the given stream.

Inherited methods

From class


        
          android.app.Service

`void`	`attachBaseContext(Context newBase)` Set the base context for this ContextWrapper.
`void`	`dump(FileDescriptor fd, PrintWriter writer, String[] args)` Print the Service's state into the given stream.
`final Application`	`getApplication()` Return the application that owns this service.
`final int`	`getForegroundServiceType()` If the service has become a foreground service by calling `startForeground(int, android.app.Notification)` or `startForeground(int, android.app.Notification, int)`, `getForegroundServiceType()` returns the current foreground service type.
`abstract IBinder`	`onBind(Intent intent)` Return the communication channel to the service.
`void`	`onConfigurationChanged(Configuration newConfig)` Called by the system when the device configuration changes while your component is running.
`void`	`onCreate()` Called by the system when the service is first created.
`void`	`onDestroy()` Called by the system to notify a Service that it is no longer used and is being removed.
`void`	`onLowMemory()` This is called when the overall system is running low on memory, and actively running processes should trim their memory usage.
`void`	`onRebind(Intent intent)` Called when new clients have connected to the service, after it had previously been notified that all had disconnected in its `onUnbind(Intent)`.
`void`	`onStart(Intent intent, int startId)` This method was deprecated in API level 15. Implement `onStartCommand(android.content.Intent, int, int)` instead.
`int`	`onStartCommand(Intent intent, int flags, int startId)` Called by the system every time a client explicitly starts the service by calling `Context.startService(Intent)`, providing the arguments it supplied and a unique integer token representing the start request.
`void`	`onTaskRemoved(Intent rootIntent)` This is called if the service is currently running and the user has removed a task that comes from the service's application.
`void`	`onTimeout(int startId, int fgsType)` Callback called when a particular foreground service type has timed out.
`void`	`onTimeout(int startId)` Callback called on timeout for `ServiceInfo.FOREGROUND_SERVICE_TYPE_SHORT_SERVICE`.
`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.
`boolean`	`onUnbind(Intent intent)` Called when all clients have disconnected from a particular interface published by the service.
`final void`	`startForeground(int id, Notification notification)` If your service is started (running through `Context.startService(Intent)`), then also make this service run in the foreground, supplying the ongoing notification to be shown to the user while in this state.
`final void`	`startForeground(int id, Notification notification, int foregroundServiceType)` An overloaded version of `startForeground(int, android.app.Notification)` with additional foregroundServiceType parameter.
`final void`	`stopForeground(int notificationBehavior)` Remove this service from foreground state, allowing it to be killed if more memory is needed.
`final void`	`stopForeground(boolean removeNotification)` This method was deprecated in API level 33. call `stopForeground(int)` and pass either `STOP_FOREGROUND_REMOVE` or `STOP_FOREGROUND_DETACH` explicitly instead.
`final void`	`stopSelf()` Stop the service, if it was previously started.
`final void`	`stopSelf(int startId)` Old version of `stopSelfResult(int)` that doesn't return a result.
`final boolean`	`stopSelfResult(int startId)` Stop the service if the most recent time it was started was `startId`.

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.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.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.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. If you're overriding ComponentCallbacks2#onTrimMemory and your minSdkVersion is greater than API 14, you can provide an empty implementation for this method.

Constants

DREAM_META_DATA

Added in API level 17

public static final String DREAM_META_DATA

Name under which a Dream publishes information about itself. This meta-data must reference an XML resource containing a <dream> tag.

Constant Value: "android.service.dream"

SERVICE_INTERFACE

Added in API level 17

public static final String SERVICE_INTERFACE

The Intent that must be declared as handled by the service.

Constant Value: "android.service.dreams.DreamService"

Public constructors

DreamService

Added in API level 17

public DreamService ()

Public methods

addContentView

Added in API level 17

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

Adds a view to the Dream's window, leaving other content views in place.

Note: Requires a window, do not call before onAttachedToWindow()

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

dispatchGenericMotionEvent

Added in API level 17

public boolean dispatchGenericMotionEvent (MotionEvent event)

Called to process generic motion events. At the very least your implementation must call Window.superDispatchGenericMotionEvent(MotionEvent) to do the standard processing.

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

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

dispatchKeyEvent

Added in API level 17

public boolean dispatchKeyEvent (KeyEvent event)

Called to process key events. At the very least your implementation must call Window.superDispatchKeyEvent(KeyEvent) to do the standard key processing.

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

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

dispatchKeyShortcutEvent

Added in API level 17

public boolean dispatchKeyShortcutEvent (KeyEvent event)

Called to process a key shortcut event. At the very least your implementation must call Window.superDispatchKeyShortcutEvent(KeyEvent) to do the standard key shortcut processing.

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

Returns
`boolean`	True if this event was consumed.

dispatchPopulateAccessibilityEvent

Added in API level 17

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 17

public boolean dispatchTouchEvent (MotionEvent event)

Called to process touch screen events. At the very least your implementation must call Window.superDispatchTouchEvent(MotionEvent) to do the standard touch screen processing.

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

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

dispatchTrackballEvent

Added in API level 17

public boolean dispatchTrackballEvent (MotionEvent event)

Called to process trackball events. At the very least your implementation must call Window.superDispatchTrackballEvent(MotionEvent) to do the standard trackball processing.

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

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

findViewById

Added in API level 17

public T findViewById (int id)

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

Note: Requires a window, do not call before onAttachedToWindow()

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`	The view if found or null otherwise.

See also:

finish

Added in API level 17

public final void finish ()

Stops the dream and detaches from the window.

When the dream ends, the system will be allowed to go to sleep fully unless there is a reason for it to be awake such as recent user activity or wake locks being held.

getWindow

Added in API level 17

public Window getWindow ()

Retrieves the current Window for the dream. Behaves similarly to Activity.getWindow().

Returns
`Window`	The current window, or null if the dream is not started.

getWindowManager

Added in API level 17

public WindowManager getWindowManager ()

Retrieves the current WindowManager for the dream. Behaves similarly to Activity.getWindowManager().

Returns
`WindowManager`	The current window manager, or null if the dream is not started.

isFullscreen

Added in API level 17

public boolean isFullscreen ()

Returns whether this dream is in fullscreen mode. Defaults to false.

Returns
`boolean`

See also:

setFullscreen(boolean)

isInteractive

Added in API level 17

public boolean isInteractive ()

Returns whether this dream is interactive. Defaults to false.

Returns
`boolean`

See also:

setInteractive(boolean)

isScreenBright

Added in API level 17

public boolean isScreenBright ()

Returns whether this dream keeps the screen bright while dreaming. Defaults to true, preventing the screen from dimming.

Returns
`boolean`

See also:

setScreenBright(boolean)

onActionModeFinished

Added in API level 17

public void onActionModeFinished (ActionMode mode)

Called when an action mode has been finished. The appropriate mode callback method will have already been invoked.

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

onActionModeStarted

Added in API level 17

public void onActionModeStarted (ActionMode mode)

Called when an action mode has been started. The appropriate mode callback method will have already been invoked.

Parameters
`mode`	`ActionMode`: The new mode that has just been started.

onAttachedToWindow

Added in API level 17

public void onAttachedToWindow ()

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

onBind

Added in API level 17

public final IBinder onBind (Intent intent)

Return the communication channel to the service. May return null if clients can not bind to the service. The returned IBinder is usually for a complex interface that has been described using aidl.

Note that unlike other application components, calls on to the IBinder interface returned here may not happen on the main thread of the process. More information about the main thread can be found in Processes and Threads.

Parameters
`intent`	`Intent`: The Intent that was used to bind to this service, as given to `Context.bindService`. Note that any extras that were included with the Intent at that point will not be seen here.

Returns
`IBinder`	Return an IBinder through which clients can call on to the service.

onContentChanged

Added in API level 17

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).

onCreate

Added in API level 17

public void onCreate ()

Called when this Dream is constructed.

Added in API level 17

public boolean onCreatePanelMenu (int featureId, 
                Menu menu)

Initialize the contents of the menu for panel 'featureId'. This is called if onCreatePanelView() returns null, giving you a standard menu in which you can place your items. It is only called once for the panel, the first time it is shown.

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

Parameters
`featureId`	`int`: The panel being created.
`menu`	`Menu`: The menu inside the panel. 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 17

public View onCreatePanelView (int featureId)

Instantiate the view to display in the panel for 'featureId'. You can return null, in which case the default content (typically a menu) will be created for you.

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

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

onDestroy

Added in API level 17

public void onDestroy ()

Called by the system to notify a Service that it is no longer used and is being removed. The service should clean up any resources it holds (threads, registered receivers, etc) at this point. Upon return, there will be no more calls in to this Service object and it is effectively dead. Do not call this method directly.

onDetachedFromWindow

Added in API level 17

public void onDetachedFromWindow ()

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

onDreamingStarted

Added in API level 17

public void onDreamingStarted ()

Called when the dream's window has been created and is visible and animation may now begin.

onDreamingStopped

Added in API level 17

public void onDreamingStopped ()

Called when this Dream is stopped, either by external request or by calling finish(), before the window has been removed.

onMenuItemSelected

Added in API level 17

public boolean onMenuItemSelected (int featureId, 
                MenuItem item)

Called when a panel's menu item has been selected by the user.

Parameters
`featureId`	`int`: The panel that the menu is in.
`item`	`MenuItem`: The menu item that was selected. 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 17

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`: The menu that is opened. This value cannot be `null`.

Returns
`boolean`	Return true to allow the menu to open, or false to prevent the menu from opening.

Added in API level 17

public void onPanelClosed (int featureId, 
                Menu menu)

Called when a panel is being closed. If another logical subsequent panel is being opened (and this panel is being closed to make room for the subsequent panel), this method will NOT be called.

Parameters
`featureId`	`int`: The panel that is being displayed.
`menu`	`Menu`: If onCreatePanelView() returned null, this is the Menu being displayed in the panel.

Added in API level 17

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

Prepare a panel to be displayed. This is called right before the panel window is shown, every time it is shown.

Parameters
`featureId`	`int`: The panel that is being displayed.
`view`	`View`: The View that was returned by onCreatePanelView(). This value may be `null`.
`menu`	`Menu`: If onCreatePanelView() returned null, this is the Menu being displayed in the panel.

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

onSearchRequested

Added in API level 17

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)

onSearchRequested

Added in API level 23

public boolean onSearchRequested (SearchEvent event)

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

Parameters
`event`	`SearchEvent`: A `SearchEvent` describing the signal to start a search.

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

onUnbind

Added in API level 17

public boolean onUnbind (Intent intent)

Called when all clients have disconnected from a particular interface published by the service. The default implementation does nothing and returns false.

Parameters
`intent`	`Intent`: The Intent that was used to bind to this service, as given to `Context.bindService`. Note that any extras that were included with the Intent at that point will not be seen here.

Returns
`boolean`	Return true if you would like to have the service's `onRebind(Intent)` method later called when new clients bind to it.

onWakeUp

Added in API level 21

public void onWakeUp ()

Called when the dream is being asked to stop itself and wake.

The default implementation simply calls finish() which ends the dream immediately. Subclasses may override this function to perform a smooth exit transition then call finish() afterwards.

Note that the dream will only be given a short period of time (currently about five seconds) to wake up. If the dream does not finish itself in a timely manner then the system will forcibly finish it once the time allowance is up.

onWindowAttributesChanged

Added in API level 17

public void onWindowAttributesChanged (WindowManager.LayoutParams attrs)

This is called whenever the current window attributes change.

Parameters
`attrs`	`WindowManager.LayoutParams`

onWindowFocusChanged

Added in API level 17

public void onWindowFocusChanged (boolean hasFocus)

This hook is called whenever the window focus changes. See View.onWindowFocusChangedNotLocked(boolean) for more information.

Parameters
`hasFocus`	`boolean`: Whether the window now has focus.

onWindowStartingActionMode

Added in API level 17

public ActionMode onWindowStartingActionMode (ActionMode.Callback callback)

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. This is equivalent to onWindowStartingActionMode(android.view.ActionMode.Callback, int) with type ActionMode.TYPE_PRIMARY.

Parameters
`callback`	`ActionMode.Callback`: Callback to control the lifecycle of this action mode

Returns
`ActionMode`	The ActionMode that was started, or null if the system should present it

onWindowStartingActionMode

Added in API level 23

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

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`	The ActionMode that was started, or null if the system should present it

requireViewById

Added in API level 28

public final T requireViewById (int id)

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

Note: Requires a window, do not call before onAttachedToWindow()

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

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

See also:

setContentView

Added in API level 17

public void setContentView (View view)

Sets a view to be the content view for this Dream. Behaves similarly to Activity.setContentView(android.view.View) in an activity, including using ViewGroup.LayoutParams.MATCH_PARENT as the layout height and width of the view.

Note: This requires a window, so you should usually call it during onAttachedToWindow() and never earlier (you cannot call it during onCreate()).

Parameters
`view`	`View`

See also:

setContentView

Added in API level 17

public void setContentView (int layoutResID)

Inflates a layout resource and set it to be the content view for this Dream. Behaves similarly to Activity.setContentView(int).

Note: Requires a window, do not call before onAttachedToWindow()

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

See also:

setContentView

Added in API level 17

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

Sets a view to be the content view for this Dream. Behaves similarly to Activity.setContentView(android.view.View, android.view.ViewGroup.LayoutParams) in an activity.

Note: This requires a window, so you should usually call it during onAttachedToWindow() and never earlier (you cannot call it during onCreate()).

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

See also:

setFullscreen

Added in API level 17

public void setFullscreen (boolean fullscreen)

Controls WindowManager.LayoutParams.FLAG_FULLSCREEN on the dream's window.

Parameters
`fullscreen`	`boolean`: If true, the fullscreen flag will be set; else it will be cleared.

setInteractive

Added in API level 17

public void setInteractive (boolean interactive)

Marks this dream as interactive to receive input events.

Non-interactive dreams (default) will dismiss on the first input event.

Interactive dreams should call finish() to dismiss themselves.

Parameters
`interactive`	`boolean`: True if this dream will handle input events.

setScreenBright

Added in API level 17

public void setScreenBright (boolean screenBright)

Marks this dream as keeping the screen bright while dreaming. In preview mode, the screen is always allowed to dim and overrides the value specified here.

Parameters
`screenBright`	`boolean`: True to keep the screen bright while dreaming.

wakeUp

Added in API level 21

public final void wakeUp ()

Wakes the dream up gently.

Calls onWakeUp() to give the dream a chance to perform an exit transition. When the transition is over, the dream should call finish().

Protected methods

dump

Added in API level 17

protected void dump (FileDescriptor fd, 
                PrintWriter pw, 
                String[] args)

Print the Service's state into the given stream. This gets invoked if you run "adb shell dumpsys activity service <yourservicename>" (note that for this command to work, the service must be running, and you must specify a fully-qualified service name). This is distinct from "dumpsys <servicename>", which only works for named system services and which invokes the IBinder.dump method on the IBinder interface registered with ServiceManager.

Parameters
`fd`	`FileDescriptor`: The raw file descriptor that the dump is being sent to.
`pw`	`PrintWriter`: The PrintWriter to which you should dump your state. This will be closed for you after you return.
`args`	`String`: additional arguments to the dump request.