Most visited

Recently visited

Results for

Added in API level 4

AccessibilityService

public abstract class AccessibilityService
extends Service

java.lang.Object
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	android.app.Service
			↳	android.accessibilityservice.AccessibilityService

Accessibility services are intended to assist users with disabilities in using Android devices and apps. They run in the background and receive callbacks by the system when AccessibilityEvents are fired. Such events denote some state transition in the user interface, for example, the focus has changed, a button has been clicked, etc. Such a service can optionally request the capability for querying the content of the active window. Development of an accessibility service requires extending this class and implementing its abstract methods.

Developer Guides

For more information about creating AccessibilityServices, read the Accessibility developer guide.

Lifecycle

The lifecycle of an accessibility service is managed exclusively by the system and follows the established service life cycle. Starting an accessibility service is triggered exclusively by the user explicitly turning the service on in device settings. After the system binds to a service, it calls onServiceConnected(). This method can be overriden by clients that want to perform post binding setup.

An accessibility service stops either when the user turns it off in device settings or when it calls disableSelf().

Declaration

An accessibility is declared as any other service in an AndroidManifest.xml, but it must do two things:

Intent

BIND_ACCESSIBILITY_SERVICE

If either of these items is missing, the system will ignore the accessibility service. Following is an example declaration:

 <service android:name=".MyAccessibilityService"
         android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
     <intent-filter>
         <action android:name="android.accessibilityservice.AccessibilityService" />
     </intent-filter>
     . . .
 </service>

Configuration

An accessibility service can be configured to receive specific types of accessibility events, listen only to specific packages, get events from each type only once in a given time frame, retrieve window content, specify a settings activity, etc.

There are two approaches for configuring an accessibility service:

Providing a meta-data entry in the manifest when declaring the service. A service declaration with a meta-data tag is presented below:

 <service android:name=".MyAccessibilityService">
     <intent-filter>
         <action android:name="android.accessibilityservice.AccessibilityService" />
     </intent-filter>
     <meta-data android:name="android.accessibilityservice" android:resource="@xml/accessibilityservice" />
 </service>

Note: This approach enables setting all properties.

For more details refer to SERVICE_META_DATA and <accessibility-service>.

Calling setServiceInfo(AccessibilityServiceInfo). Note that this method can be called any time to dynamically change the service configuration.
Note: This approach enables setting only dynamically configurable properties: eventTypes, feedbackType, flags, notificationTimeout, packageNames

For more details refer to AccessibilityServiceInfo.

Retrieving window content

A service can specify in its declaration that it can retrieve window content which is represented as a tree of AccessibilityWindowInfo and AccessibilityNodeInfo objects. Note that declaring this capability requires that the service declares its configuration via an XML resource referenced by SERVICE_META_DATA.

Window content may be retrieved with AccessibilityEvent.getSource(), findFocus(int), getWindows(), or getRootInActiveWindow().

Note An accessibility service may have requested to be notified for a subset of the event types, and thus be unaware when the node hierarchy has changed. It is also possible for a node to contain outdated information because the window content may change at any time.

Notification strategy

All accessibility services are notified of all events they have requested, regardless of their feedback type.

Note: The event notification timeout is useful to avoid propagating events to the client too frequently since this is accomplished via an expensive interprocess call. One can think of the timeout as a criteria to determine when event generation has settled down.

Event types

Feedback types

See also:

Summary

Nested classes
`class`	`AccessibilityService.GestureResultCallback` Class used to report status of dispatched gestures
`class`	`AccessibilityService.MagnificationController` Used to control and query the state of display magnification.
`class`	`AccessibilityService.SoftKeyboardController` Used to control and query the soft keyboard show mode.

Constants
`int`	`GESTURE_SWIPE_DOWN` The user has performed a swipe down gesture on the touch screen.
`int`	`GESTURE_SWIPE_DOWN_AND_LEFT` The user has performed an down and left gesture on the touch screen.
`int`	`GESTURE_SWIPE_DOWN_AND_RIGHT` The user has performed an down and right gesture on the touch screen.
`int`	`GESTURE_SWIPE_DOWN_AND_UP` The user has performed a swipe down and up gesture on the touch screen.
`int`	`GESTURE_SWIPE_LEFT` The user has performed a swipe left gesture on the touch screen.
`int`	`GESTURE_SWIPE_LEFT_AND_DOWN` The user has performed a left and down gesture on the touch screen.
`int`	`GESTURE_SWIPE_LEFT_AND_RIGHT` The user has performed a swipe left and right gesture on the touch screen.
`int`	`GESTURE_SWIPE_LEFT_AND_UP` The user has performed a left and up gesture on the touch screen.
`int`	`GESTURE_SWIPE_RIGHT` The user has performed a swipe right gesture on the touch screen.
`int`	`GESTURE_SWIPE_RIGHT_AND_DOWN` The user has performed a right and down gesture on the touch screen.
`int`	`GESTURE_SWIPE_RIGHT_AND_LEFT` The user has performed a swipe right and left gesture on the touch screen.
`int`	`GESTURE_SWIPE_RIGHT_AND_UP` The user has performed a right and up gesture on the touch screen.
`int`	`GESTURE_SWIPE_UP` The user has performed a swipe up gesture on the touch screen.
`int`	`GESTURE_SWIPE_UP_AND_DOWN` The user has performed a swipe up and down gesture on the touch screen.
`int`	`GESTURE_SWIPE_UP_AND_LEFT` The user has performed an up and left gesture on the touch screen.
`int`	`GESTURE_SWIPE_UP_AND_RIGHT` The user has performed an up and right gesture on the touch screen.
`int`	`GLOBAL_ACTION_BACK` Action to go back.
`int`	`GLOBAL_ACTION_HOME` Action to go home.
`int`	`GLOBAL_ACTION_NOTIFICATIONS` Action to open the notifications.
`int`	`GLOBAL_ACTION_POWER_DIALOG` Action to open the power long-press dialog.
`int`	`GLOBAL_ACTION_QUICK_SETTINGS` Action to open the quick settings.
`int`	`GLOBAL_ACTION_RECENTS` Action to toggle showing the overview of recent apps
`int`	`GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN` Action to toggle docking the current app's window
`String`	`SERVICE_INTERFACE` The `Intent` that must be declared as handled by the service.
`String`	`SERVICE_META_DATA` Name under which an AccessibilityService component publishes information about itself.
`int`	`SHOW_MODE_AUTO`
`int`	`SHOW_MODE_HIDDEN`

Inherited constants

From class


    android.app.Service

From class


    android.content.Context

From interface


    android.content.ComponentCallbacks2

Public constructors
`AccessibilityService()`

Public methods
`final void`	`disableSelf()` Disables the service.
`final boolean`	`dispatchGesture(GestureDescription gesture, AccessibilityService.GestureResultCallback callback, Handler handler)` Dispatch a gesture to the touch screen.
`AccessibilityNodeInfo`	`findFocus(int focus)` Find the view that has the specified focus type.
`final AccessibilityService.MagnificationController`	`getMagnificationController()` Returns the magnification controller, which may be used to query and modify the state of display magnification.
`AccessibilityNodeInfo`	`getRootInActiveWindow()` Gets the root node in the currently active window if this service can retrieve window content.
`final AccessibilityServiceInfo`	`getServiceInfo()` Gets the an `AccessibilityServiceInfo` describing this `AccessibilityService`.
`final AccessibilityService.SoftKeyboardController`	`getSoftKeyboardController()` Returns the soft keyboard controller, which may be used to query and modify the soft keyboard show mode.
`Object`	`getSystemService(String name)` Return the handle to a system-level service by name.
`List<AccessibilityWindowInfo>`	`getWindows()` Gets the windows on the screen.
`abstract void`	`onAccessibilityEvent(AccessibilityEvent event)` Callback for `AccessibilityEvent`s.
`final IBinder`	`onBind(Intent intent)` Implement to return the implementation of the internal accessibility service interface.
`abstract void`	`onInterrupt()` Callback for interrupting the accessibility feedback.
`final boolean`	`performGlobalAction(int action)` Performs a global action.
`final void`	`setServiceInfo(AccessibilityServiceInfo info)` Sets the `AccessibilityServiceInfo` that describes this service.

Protected methods
`boolean`	`onGesture(int gestureId)` Called by the system when the user performs a specific gesture on the touch screen.
`boolean`	`onKeyEvent(KeyEvent event)` Callback that allows an accessibility service to observe the key events before they are passed to the rest of the system.
`void`	`onServiceConnected()` This method is a part of the `AccessibilityService` lifecycle and is called after the system has successfully bound to the service.

Inherited methods

From class


  
    android.app.Service

`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.
`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 5. Implement `onStartCommand(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 `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`	`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)` Make this service run in the foreground, supplying the ongoing notification to be shown to the user while in this state.
`final void`	`stopForeground(int flags)` Remove this service from foreground state, allowing it to be killed if more memory is needed.
`final void`	`stopForeground(boolean removeNotification)` Synonym for `stopForeground(int)`.
`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`	`bindService(Intent service, ServiceConnection conn, int flags)` Connect to an application service, creating it if needed.
`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`	`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 user ID has been granted permission to access a specific 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 user ID has been granted permission to access a specific URI.
`void`	`clearWallpaper()` This method was deprecated in API level 23. Use `WallpaperManager.clear()` instead. This method requires the caller to hold the permission `SET_WALLPAPER`.
`Context`	`createConfigurationContext(Configuration overrideConfiguration)` Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration.
`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)` Return a new Context object for the current Context but whose resources are adjusted to match the metrics of the given Display.
`Context`	`createPackageContext(String packageName, int flags)` Return a new Context object for the given application name.
`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 user ID 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 user ID 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.
`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, SQLiteDatabase.CursorFactory)` is stored.
`File`	`getDir(String name, int mode)` Retrieve, creating if needed, a new directory in which the application can place its own custom data files.
`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()` Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place media files.
`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.
`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.
`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 was deprecated in API level 23. Use `WallpaperManager.get()` instead.
`int`	`getWallpaperDesiredMinimumHeight()` This method was deprecated in API level 23. Use `WallpaperManager.getDesiredMinimumHeight()` instead.
`int`	`getWallpaperDesiredMinimumWidth()` This method was deprecated in API level 23. 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 was deprecated in API level 23. Use `WallpaperManager.peek()` instead.
`Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter)` Register a BroadcastReceiver to be run in the main activity thread.
`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 was deprecated in API level 23. 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 was deprecated in API level 23. 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`	`revokeUriPermission(Uri uri, int modeFlags)` Remove all permissions to access a particular content provider Uri that were previously added with `grantUriPermission(String, Uri, int)`.
`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(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(Intent, String)` that allows you to specify the user the broadcast will be sent to.
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)` Version of `sendBroadcast(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(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)` that allows you to specify the user the broadcast will be sent to.
`void`	`sendStickyBroadcast(Intent intent)` This method was deprecated in API level 23. 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 was deprecated in API level 23. 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 was deprecated in API level 23. 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 was deprecated in API level 23. 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 was deprecated in API level 23. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `SET_WALLPAPER`.
`void`	`setWallpaper(InputStream data)` This method was deprecated in API level 23. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `SET_WALLPAPER`.
`void`	`startActivities(Intent[] intents, Bundle options)` Launch multiple new activities.
`void`	`startActivities(Intent[] intents)` Same as `startActivities(Intent[], Bundle)` with no options specified.
`void`	`startActivity(Intent intent)` Same as `startActivity(Intent, Bundle)` with no options specified.
`void`	`startActivity(Intent intent, Bundle options)` Launch a new activity.
`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(IntentSender, Intent, int, int, int, Bundle)` with no options specified.
`void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Like `startActivity(Intent, 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`	`unregisterReceiver(BroadcastReceiver receiver)` Unregister a previously registered BroadcastReceiver.

From class


  
    android.content.Context

`abstract boolean`	`bindService(Intent service, ServiceConnection conn, int flags)` Connect to an application service, creating it if needed.
`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.
`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 user ID has been granted permission to access a specific 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 user ID has been granted permission to access a specific URI.
`abstract void`	`clearWallpaper()` This method was deprecated in API level 5. Use `WallpaperManager.clear()` instead. This method requires the caller to hold the permission `SET_WALLPAPER`.
`abstract Context`	`createConfigurationContext(Configuration overrideConfiguration)` Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration.
`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)` Return a new Context object for the current Context but whose resources are adjusted to match the metrics of the given Display.
`abstract Context`	`createPackageContext(String packageName, int flags)` Return a new Context object for the given application name.
`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 user ID 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 user ID 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.
`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, SQLiteDatabase.CursorFactory)` is stored.
`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.
`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()` Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place media files.
`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.
`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.
`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.
`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, 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 `format(String, Object...)`.
`final String`	`getString(int resId)` Returns a localized string from the application's package's default string table.
`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 5. Use `WallpaperManager.get()` instead.
`abstract int`	`getWallpaperDesiredMinimumHeight()` This method was deprecated in API level 5. Use `WallpaperManager.getDesiredMinimumHeight()` instead.
`abstract int`	`getWallpaperDesiredMinimumWidth()` This method was deprecated in API level 5. 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.
`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 5. 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.
`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, 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.
`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)`.
`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(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(Intent, String)` that allows you to specify the user 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(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(Intent, String, BroadcastReceiver, Handler, int, String, 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.
`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 5. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `SET_WALLPAPER`.
`abstract void`	`setWallpaper(InputStream data)` This method was deprecated in API level 5. Use `WallpaperManager.set()` instead. This method requires the caller to hold the permission `SET_WALLPAPER`.
`abstract void`	`startActivities(Intent[] intents, Bundle options)` Launch multiple new activities.
`abstract void`	`startActivities(Intent[] intents)` Same as `startActivities(Intent[], Bundle)` with no options specified.
`abstract void`	`startActivity(Intent intent)` Same as `startActivity(Intent, Bundle)` with no options specified.
`abstract void`	`startActivity(Intent intent, Bundle options)` Launch a new activity.
`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(IntentSender, Intent, int, int, int, Bundle)` with no options specified.
`abstract void`	`startIntentSender(IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Like `startActivity(Intent, 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(ComponentCallbacks)`.
`abstract void`	`unregisterReceiver(BroadcastReceiver receiver)` Unregister a previously registered BroadcastReceiver.

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 millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    android.content.ComponentCallbacks2

From interface


  
    android.content.ComponentCallbacks

Constants

GESTURE_SWIPE_DOWN

Added in API level 16

int GESTURE_SWIPE_DOWN

The user has performed a swipe down gesture on the touch screen.

Constant Value: 2 (0x00000002)

GESTURE_SWIPE_DOWN_AND_LEFT

Added in API level 16

int GESTURE_SWIPE_DOWN_AND_LEFT

The user has performed an down and left gesture on the touch screen.

Constant Value: 15 (0x0000000f)

GESTURE_SWIPE_DOWN_AND_RIGHT

Added in API level 16

int GESTURE_SWIPE_DOWN_AND_RIGHT

The user has performed an down and right gesture on the touch screen.

Constant Value: 16 (0x00000010)

GESTURE_SWIPE_DOWN_AND_UP

Added in API level 16

int GESTURE_SWIPE_DOWN_AND_UP

The user has performed a swipe down and up gesture on the touch screen.

Constant Value: 8 (0x00000008)

GESTURE_SWIPE_LEFT

Added in API level 16

int GESTURE_SWIPE_LEFT

The user has performed a swipe left gesture on the touch screen.

Constant Value: 3 (0x00000003)

GESTURE_SWIPE_LEFT_AND_DOWN

Added in API level 16

int GESTURE_SWIPE_LEFT_AND_DOWN

The user has performed a left and down gesture on the touch screen.

Constant Value: 10 (0x0000000a)

GESTURE_SWIPE_LEFT_AND_RIGHT

Added in API level 16

int GESTURE_SWIPE_LEFT_AND_RIGHT

The user has performed a swipe left and right gesture on the touch screen.

Constant Value: 5 (0x00000005)

GESTURE_SWIPE_LEFT_AND_UP

Added in API level 16

int GESTURE_SWIPE_LEFT_AND_UP

The user has performed a left and up gesture on the touch screen.

Constant Value: 9 (0x00000009)

GESTURE_SWIPE_RIGHT

Added in API level 16

int GESTURE_SWIPE_RIGHT

The user has performed a swipe right gesture on the touch screen.

Constant Value: 4 (0x00000004)

GESTURE_SWIPE_RIGHT_AND_DOWN

Added in API level 16

int GESTURE_SWIPE_RIGHT_AND_DOWN

The user has performed a right and down gesture on the touch screen.

Constant Value: 12 (0x0000000c)

GESTURE_SWIPE_RIGHT_AND_LEFT

Added in API level 16

int GESTURE_SWIPE_RIGHT_AND_LEFT

The user has performed a swipe right and left gesture on the touch screen.

Constant Value: 6 (0x00000006)

GESTURE_SWIPE_RIGHT_AND_UP

Added in API level 16

int GESTURE_SWIPE_RIGHT_AND_UP

The user has performed a right and up gesture on the touch screen.

Constant Value: 11 (0x0000000b)

GESTURE_SWIPE_UP

Added in API level 16

int GESTURE_SWIPE_UP

The user has performed a swipe up gesture on the touch screen.

Constant Value: 1 (0x00000001)

GESTURE_SWIPE_UP_AND_DOWN

Added in API level 16

int GESTURE_SWIPE_UP_AND_DOWN

The user has performed a swipe up and down gesture on the touch screen.

Constant Value: 7 (0x00000007)

GESTURE_SWIPE_UP_AND_LEFT

Added in API level 16

int GESTURE_SWIPE_UP_AND_LEFT

The user has performed an up and left gesture on the touch screen.

Constant Value: 13 (0x0000000d)

GESTURE_SWIPE_UP_AND_RIGHT

Added in API level 16

int GESTURE_SWIPE_UP_AND_RIGHT

The user has performed an up and right gesture on the touch screen.

Constant Value: 14 (0x0000000e)

GLOBAL_ACTION_BACK

Added in API level 16

int GLOBAL_ACTION_BACK

Action to go back.

Constant Value: 1 (0x00000001)

GLOBAL_ACTION_HOME

Added in API level 16

int GLOBAL_ACTION_HOME

Action to go home.

Constant Value: 2 (0x00000002)

GLOBAL_ACTION_NOTIFICATIONS

Added in API level 16

int GLOBAL_ACTION_NOTIFICATIONS

Action to open the notifications.

Constant Value: 4 (0x00000004)

GLOBAL_ACTION_POWER_DIALOG

Added in API level 21

int GLOBAL_ACTION_POWER_DIALOG

Action to open the power long-press dialog.

Constant Value: 6 (0x00000006)

GLOBAL_ACTION_QUICK_SETTINGS

Added in API level 17

int GLOBAL_ACTION_QUICK_SETTINGS

Action to open the quick settings.

Constant Value: 5 (0x00000005)

GLOBAL_ACTION_RECENTS

Added in API level 16

int GLOBAL_ACTION_RECENTS

Action to toggle showing the overview of recent apps

Constant Value: 3 (0x00000003)

GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN

Added in API level 24

int GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN

Action to toggle docking the current app's window

Constant Value: 7 (0x00000007)

SERVICE_INTERFACE

Added in API level 4

String SERVICE_INTERFACE

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

Constant Value: "android.accessibilityservice.AccessibilityService"

SERVICE_META_DATA

Added in API level 14

String SERVICE_META_DATA

Name under which an AccessibilityService component publishes information about itself. This meta-data must reference an XML resource containing an <accessibility-service> tag. This is a a sample XML file configuring an accessibility service:

 <accessibility-service
     android:accessibilityEventTypes="typeViewClicked|typeViewFocused"
     android:packageNames="foo.bar, foo.baz"
     android:accessibilityFeedbackType="feedbackSpoken"
     android:notificationTimeout="100"
     android:accessibilityFlags="flagDefault"
     android:settingsActivity="foo.bar.TestBackActivity"
     android:canRetrieveWindowContent="true"
     android:canRequestTouchExplorationMode="true"
     . . .
 />

Constant Value: "android.accessibilityservice"

SHOW_MODE_AUTO

Added in API level 24

int SHOW_MODE_AUTO

Constant Value: 0 (0x00000000)

SHOW_MODE_HIDDEN

Added in API level 24

int SHOW_MODE_HIDDEN

Constant Value: 1 (0x00000001)

Public constructors

AccessibilityService

Added in API level 4

AccessibilityService ()

Public methods

disableSelf

Added in API level 24

void disableSelf ()

Disables the service. After calling this method, the service will be disabled and settings will show that it is turned off.

dispatchGesture

Added in API level 24

boolean dispatchGesture (GestureDescription gesture, 
                AccessibilityService.GestureResultCallback callback, 
                Handler handler)

Dispatch a gesture to the touch screen. Any gestures currently in progress, whether from the user, this service, or another service, will be cancelled.

The gesture will be dispatched as if it were performed directly on the screen by a user, so the events may be affected by features such as magnification and explore by touch.

Note: In order to dispatch gestures, your service must declare the capability by setting the AccessibilityService_canPerformGestures property in its meta-data. For more information, see SERVICE_META_DATA.

Parameters
`gesture`	`GestureDescription`: The gesture to dispatch
`callback`	`AccessibilityService.GestureResultCallback`: The object to call back when the status of the gesture is known. If `null`, no status is reported.
`handler`	`Handler`: The handler on which to call back the `callback` object. If `null`, the object is called back on the service's main thread.

Returns
`boolean`	`true` if the gesture is dispatched, `false` if not.

findFocus

Added in API level 21

AccessibilityNodeInfo findFocus (int focus)

Find the view that has the specified focus type. The search is performed across all windows.

Note: In order to access the windows your service has to declare the capability to retrieve window content by setting the AccessibilityService_canRetrieveWindowContent property in its meta-data. For details refer to SERVICE_META_DATA. Also the service has to opt-in to retrieve the interactive windows by setting the FLAG_RETRIEVE_INTERACTIVE_WINDOWS flag. Otherwise, the search will be performed only in the active window.

Parameters
`focus`	`int`: The focus to find. One of `FOCUS_INPUT` or `FOCUS_ACCESSIBILITY`.

Returns
`AccessibilityNodeInfo`	The node info of the focused view or null.

See also:

getMagnificationController

Added in API level 24

AccessibilityService.MagnificationController getMagnificationController ()

Returns the magnification controller, which may be used to query and modify the state of display magnification.

Note: In order to control magnification, your service must declare the capability by setting the AccessibilityService_canControlMagnification property in its meta-data. For more information, see SERVICE_META_DATA.

Returns
`AccessibilityService.MagnificationController`	the magnification controller

getRootInActiveWindow

Added in API level 16

AccessibilityNodeInfo getRootInActiveWindow ()

Gets the root node in the currently active window if this service can retrieve window content. The active window is the one that the user is currently touching or the window with input focus, if the user is not touching any window.

The currently active window is defined as the window that most recently fired one of the following events: TYPE_WINDOW_STATE_CHANGED, TYPE_VIEW_HOVER_ENTER, TYPE_VIEW_HOVER_EXIT. In other words, the last window shown that also has input focus.

Note: In order to access the root node your service has to declare the capability to retrieve window content by setting the AccessibilityService_canRetrieveWindowContent property in its meta-data. For details refer to SERVICE_META_DATA.

Returns
`AccessibilityNodeInfo`	The root node if this service can retrieve window content.

getServiceInfo

Added in API level 16

AccessibilityServiceInfo getServiceInfo ()

Gets the an AccessibilityServiceInfo describing this AccessibilityService. This method is useful if one wants to change some of the dynamically configurable properties at runtime.

Returns
`AccessibilityServiceInfo`	The accessibility service info.

See also:

AccessibilityServiceInfo

getSoftKeyboardController

Added in API level 24

AccessibilityService.SoftKeyboardController getSoftKeyboardController ()

Returns the soft keyboard controller, which may be used to query and modify the soft keyboard show mode.

Returns
`AccessibilityService.SoftKeyboardController`	the soft keyboard controller

getSystemService

Added in API level 4

Object getSystemService (String name)

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

WINDOW_SERVICE ("window"): The top-level window manager in which you can place custom windows. The returned object is a WindowManager.
LAYOUT_INFLATER_SERVICE ("layout_inflater"): A LayoutInflater for inflating layout resources in this context.
ACTIVITY_SERVICE ("activity"): A ActivityManager for interacting with the global activity state of the system.
POWER_SERVICE ("power"): A PowerManager for controlling power management.
ALARM_SERVICE ("alarm"): A AlarmManager for receiving intents at the time of your choosing.
NOTIFICATION_SERVICE ("notification"): A NotificationManager for informing the user of background events.
KEYGUARD_SERVICE ("keyguard"): A KeyguardManager for controlling keyguard.
LOCATION_SERVICE ("location"): A LocationManager for controlling location (e.g., GPS) updates.
SEARCH_SERVICE ("search"): A SearchManager for handling search.
VIBRATOR_SERVICE ("vibrator"): A Vibrator for interacting with the vibrator hardware.
CONNECTIVITY_SERVICE ("connection"): A ConnectivityManager for handling management of network connections.
WIFI_SERVICE ("wifi"): A WifiManager for management of Wi-Fi connectivity.
WIFI_P2P_SERVICE ("wifip2p"): A WifiP2pManager for management of Wi-Fi Direct connectivity.
INPUT_METHOD_SERVICE ("input_method"): An InputMethodManager for management of input methods.
UI_MODE_SERVICE ("uimode"): An UiModeManager for controlling UI modes.
DOWNLOAD_SERVICE ("download"): A DownloadManager for requesting HTTP downloads
BATTERY_SERVICE ("batterymanager"): A BatteryManager for managing battery state
JOB_SCHEDULER_SERVICE ("taskmanager"): A JobScheduler for managing scheduled tasks
NETWORK_STATS_SERVICE ("netstats"): A NetworkStatsManager for querying network usage statistics.
HARDWARE_PROPERTIES_SERVICE ("hardware_properties"): A HardwarePropertiesManager for accessing hardware properties.

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

Parameters
`name`	`String`: The name of the desired service.

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

getWindows

Added in API level 21

List<AccessibilityWindowInfo> getWindows ()

Gets the windows on the screen. This method returns only the windows that a sighted user can interact with, as opposed to all windows. For example, if there is a modal dialog shown and the user cannot touch anything behind it, then only the modal window will be reported (assuming it is the top one). For convenience the returned windows are ordered in a descending layer order, which is the windows that are higher in the Z-order are reported first. Since the user can always interact with the window that has input focus by typing, the focused window is always returned (even if covered by a modal window).

Returns
`List<AccessibilityWindowInfo>`	The windows if there are windows and the service is can retrieve them, otherwise an empty list.

onAccessibilityEvent

Added in API level 4

void onAccessibilityEvent (AccessibilityEvent event)

Callback for AccessibilityEvents.

Parameters
`event`	`AccessibilityEvent`: The new event. This event is owned by the caller and cannot be used after this method returns. Services wishing to use the event after this method returns should make a copy.

onBind

Added in API level 4

IBinder onBind (Intent intent)

Implement to return the implementation of the internal accessibility service interface.

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.

onInterrupt

Added in API level 4

void onInterrupt ()

Callback for interrupting the accessibility feedback.

performGlobalAction

Added in API level 16

boolean performGlobalAction (int action)

Performs a global action. Such an action can be performed at any moment regardless of the current application or user location in that application. For example going back, going home, opening recents, etc.

Parameters
`action`	`int`: The action to perform.

Returns
`boolean`	Whether the action was successfully performed.

See also:

setServiceInfo

Added in API level 4

void setServiceInfo (AccessibilityServiceInfo info)

Sets the AccessibilityServiceInfo that describes this service.

Note: You can call this method any time but the info will be picked up after the system has bound to this service and when this method is called thereafter.

Parameters
`info`	`AccessibilityServiceInfo`: The info.

Protected methods

onGesture

Added in API level 16

boolean onGesture (int gestureId)

Called by the system when the user performs a specific gesture on the touch screen. Note: To receive gestures an accessibility service must request that the device is in touch exploration mode by setting the FLAG_REQUEST_TOUCH_EXPLORATION_MODE flag.

Parameters
`gestureId`	`int`: The unique id of the performed gesture.

Returns
`boolean`	Whether the gesture was handled.

See also:

onKeyEvent

Added in API level 18

boolean onKeyEvent (KeyEvent event)

Callback that allows an accessibility service to observe the key events before they are passed to the rest of the system. This means that the events are first delivered here before they are passed to the device policy, the input method, or applications.

Note: It is important that key events are handled in such a way that the event stream that would be passed to the rest of the system is well-formed. For example, handling the down event but not the up event and vice versa would generate an inconsistent event stream.

Note: The key events delivered in this method are copies and modifying them will have no effect on the events that will be passed to the system. This method is intended to perform purely filtering functionality.

Parameters
`event`	`KeyEvent`: The event to be processed. This event is owned by the caller and cannot be used after this method returns. Services wishing to use the event after this method returns should make a copy.

Returns
`boolean`	If true then the event will be consumed and not delivered to applications, otherwise it will be delivered as usual.

onServiceConnected

Added in API level 4

void onServiceConnected ()

This method is a part of the AccessibilityService lifecycle and is called after the system has successfully bound to the service. If is convenient to use this method for setting the AccessibilityServiceInfo.

See also:

Most visited

Recently visited

Results for

AccessibilityService

Developer Guides

Lifecycle

Declaration

Configuration

Retrieving window content

Notification strategy

Event types

Feedback types

Summary

Nested classes

Constants

Inherited constants

Public constructors

Public methods

Protected methods

Inherited methods

Constants

GESTURE_SWIPE_DOWN

GESTURE_SWIPE_DOWN_AND_LEFT

GESTURE_SWIPE_DOWN_AND_RIGHT

GESTURE_SWIPE_DOWN_AND_UP

GESTURE_SWIPE_LEFT

GESTURE_SWIPE_LEFT_AND_DOWN

GESTURE_SWIPE_LEFT_AND_RIGHT

GESTURE_SWIPE_LEFT_AND_UP

GESTURE_SWIPE_RIGHT

GESTURE_SWIPE_RIGHT_AND_DOWN

GESTURE_SWIPE_RIGHT_AND_LEFT

GESTURE_SWIPE_RIGHT_AND_UP

GESTURE_SWIPE_UP

GESTURE_SWIPE_UP_AND_DOWN

GESTURE_SWIPE_UP_AND_LEFT

GESTURE_SWIPE_UP_AND_RIGHT

GLOBAL_ACTION_BACK

GLOBAL_ACTION_HOME

GLOBAL_ACTION_NOTIFICATIONS

GLOBAL_ACTION_POWER_DIALOG

GLOBAL_ACTION_QUICK_SETTINGS

GLOBAL_ACTION_RECENTS

GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN

SERVICE_INTERFACE

SERVICE_META_DATA

SHOW_MODE_AUTO

SHOW_MODE_HIDDEN

Public constructors

AccessibilityService

Public methods

disableSelf

dispatchGesture

findFocus

getMagnificationController

getRootInActiveWindow

getServiceInfo

getSoftKeyboardController

getSystemService

getWindows

onAccessibilityEvent

onBind

onInterrupt

performGlobalAction

setServiceInfo

Protected methods

onGesture

onKeyEvent

onServiceConnected