added in API level 3

IntentService

public abstract class IntentService
extends Service

java.lang.Object
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	android.app.Service
			↳	android.app.IntentService

IntentService is a base class for Services that handle asynchronous requests (expressed as Intents) on demand. Clients send requests through startService(Intent) calls; the service is started as needed, handles each Intent in turn using a worker thread, and stops itself when it runs out of work.

This "work queue processor" pattern is commonly used to offload tasks from an application's main thread. The IntentService class exists to simplify this pattern and take care of the mechanics. To use it, extend IntentService and implement onHandleIntent(Intent). IntentService will receive the Intents, launch a worker thread, and stop the service as appropriate.

All requests are handled on a single worker thread -- they may take as long as necessary (and will not block the application's main loop), but only one request will be processed at a time.

Developer Guides

For a detailed discussion about how to create services, read the Services developer guide.

See also:

AsyncTask

Summary

Inherited constants

From class


    android.app.Service

From class


    android.content.Context

From interface


    android.content.ComponentCallbacks2

Public constructors
`IntentService(String name)` Creates an IntentService.

Public methods
`IBinder`	`onBind(Intent intent)` Unless you provide binding for your service, you don't need to implement this method, because the default implementation returns null.
`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`	`onStart(Intent intent, int startId)` This method is deprecated. Implement `onStartCommand(Intent, int, int)` instead.
`int`	`onStartCommand(Intent intent, int flags, int startId)` You should not override this method for your IntentService.
`void`	`setIntentRedelivery(boolean enabled)` Sets intent redelivery preferences.

Protected methods
`abstract void`	`onHandleIntent(Intent intent)` This method is invoked on the worker thread with a request to process.

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)` If your service is started (running through `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`	`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, 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 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)` 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)` 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.
`ComponentName`	`startForegroundService(Intent service)` Similar to `startService(Intent)`, but with an implicit promise that the Service will call `startForeground(int, 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(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`	`createContextForSplit(String splitName)` Return a new Context object for the given split name.
`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, 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.
`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.
`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 ComponentName`	`startForegroundService(Intent service)` Similar to `startService(Intent)`, but with an implicit promise that the Service will call `startForeground(int, 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(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

Public constructors

IntentService

added in API level 3

IntentService (String name)

Creates an IntentService. Invoked by your subclass's constructor.

Parameters
`name`	`String`: Used to name the worker thread, important only for debugging.

Public methods

onBind

added in API level 3

IBinder onBind (Intent intent)

Unless you provide binding for your service, you don't need to implement this method, because the default implementation returns null.

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. This value may be `null`.

See also:

onBind(Intent)

onCreate

added in API level 3

void onCreate ()

Called by the system when the service is first created. Do not call this method directly.

onDestroy

added in API level 3

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.

onStart

added in API level 3

void onStart (Intent intent, 
                int startId)

This method is deprecated.
Implement onStartCommand(Intent, int, int) instead.

Parameters
`intent`	`Intent` This value may be `null`.
`startId`	`int`

onStartCommand

added in API level 5

int onStartCommand (Intent intent, 
                int flags, 
                int startId)

You should not override this method for your IntentService. Instead, override onHandleIntent(Intent), which the system calls when the IntentService receives a start request.

Parameters
`intent`	`Intent`: The Intent supplied to `startService(Intent)`, as given. This may be null if the service is being restarted after its process has gone away, and it had previously returned anything except `START_STICKY_COMPATIBILITY`. This value may be `null`.
`flags`	`int`: Additional data about this start request.
`startId`	`int`: A unique integer representing this specific request to start. Use with `stopSelfResult(int)`.

Returns
`int`	The return value indicates what semantics the system should use for the service's current started state. It may be one of the constants associated with the `START_CONTINUATION_MASK` bits.

See also:

onStartCommand(Intent, int, int)

setIntentRedelivery

added in API level 5

void setIntentRedelivery (boolean enabled)

Sets intent redelivery preferences. Usually called from the constructor with your preferred semantics.

If enabled is true, onStartCommand(Intent, int, int) will return START_REDELIVER_INTENT, so if this process dies before onHandleIntent(Intent) returns, the process will be restarted and the intent redelivered. If multiple Intents have been sent, only the most recent one is guaranteed to be redelivered.

If enabled is false (the default), onStartCommand(Intent, int, int) will return START_NOT_STICKY, and if the process dies, the Intent dies along with it.

Parameters
`enabled`	`boolean`

Protected methods

onHandleIntent

added in API level 3

void onHandleIntent (Intent intent)

This method is invoked on the worker thread with a request to process. Only one Intent is processed at a time, but the processing happens on a worker thread that runs independently from other application logic. So, if this code takes a long time, it will hold up other requests to the same IntentService, but it will not hold up anything else. When all requests have been handled, the IntentService stops itself, so you should not call stopSelf().

This method may take several seconds to complete, so it should only be called from a worker thread.

Parameters
`intent`	`Intent`: The value passed to `startService(Intent)`. This may be null if the service is being restarted after its process has gone away; see `onStartCommand(Intent, int, int)` for details. This value may be `null`.

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Inherited constants

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Public methods

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Inherited methods

Public constructors

IntentService

Public methods

onBind

onCreate

onDestroy

onStart

onStartCommand

setIntentRedelivery

Protected methods

onHandleIntent

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