ContextWrapper

public class ContextWrapper
extends Context

java.lang.Object
   ↳ android.content.Context
     ↳ android.content.ContextWrapper

Proxying implementation of Context that simply delegates all of its calls to another Context. Can be subclassed to modify behavior without changing the original Context.

Summary

Inherited constants

Public constructors

ContextWrapper(Context base)

Public methods

boolean bindIsolatedService(Intent service, int flags, String instanceName, Executor executor, ServiceConnection conn)

Variation of bindService(Intent, BindServiceFlags, Executor, ServiceConnection) that, in the specific case of isolated services, allows the caller to generate multiple instances of a service from a single component declaration.

boolean bindService(Intent service, int flags, Executor executor, ServiceConnection conn)

Same as bindService(Intent, ServiceConnection, int) with executor to control ServiceConnection callbacks.

boolean bindService(Intent service, ServiceConnection conn, Context.BindServiceFlags flags)

See bindService(android.content.Intent, android.content.ServiceConnection, int) Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.

boolean bindService(Intent service, ServiceConnection conn, int flags)

Connects to an application service, creating it if needed.

boolean bindService(Intent service, Context.BindServiceFlags flags, Executor executor, ServiceConnection conn)

See bindService(android.content.Intent, int, java.util.concurrent.Executor, android.content.ServiceConnection) Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.

int checkCallingOrSelfPermission(String permission)

Determine whether the calling process of an IPC or you have been granted a particular permission.

int checkCallingOrSelfUriPermission(Uri uri, int modeFlags)

Determine whether the calling process of an IPC or you has been granted permission to access a specific URI.

int[] checkCallingOrSelfUriPermissions(List<Uri> uris, int modeFlags)

Determine whether the calling process of an IPC or you has been granted permission to access a list of URIs.

int checkCallingPermission(String permission)

Determine whether the calling process of an IPC you are handling has been granted a particular permission.

int checkCallingUriPermission(Uri uri, int modeFlags)

Determine whether the calling process and uid has been granted permission to access a specific URI.

int[] checkCallingUriPermissions(List<Uri> uris, int modeFlags)

Determine whether the calling process and uid has been granted permission to access a list of URIs.

int checkContentUriPermissionFull(Uri uri, int pid, int uid, int modeFlags)

Determine whether a particular process and uid has been granted permission to access a specific content URI.

int checkPermission(String permission, int pid, int uid)

Determine whether the given permission is allowed for a particular process and user ID running in the system.

int checkSelfPermission(String permission)

Determine whether you have been granted a particular permission.

int checkUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags)

Check both a Uri and normal permission.

int checkUriPermission(Uri uri, int pid, int uid, int modeFlags)

Determine whether a particular process and uid has been granted permission to access a specific URI.

int[] checkUriPermissions(List<Uri> uris, int pid, int uid, int modeFlags)

Determine whether a particular process and uid has been granted permission to access a list of URIs.

void clearWallpaper()

This method is deprecated. Use WallpaperManager.clear() instead.

This method requires the caller to hold the permission Manifest.permission.SET_WALLPAPER.

Context createAttributionContext(String attributionTag)

Return a new Context object for the current Context but attribute to a different tag.

Context createConfigurationContext(Configuration overrideConfiguration)

Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration.

Context createContext(ContextParams contextParams)

Creates a context with specific properties and behaviors.

Context createDeviceContext(int deviceId)

Returns a new Context object from the current context but with device association given by the deviceId.

Context createDeviceProtectedStorageContext()

Return a new Context object for the current Context but whose storage APIs are backed by device-protected storage.

Context createDisplayContext(Display display)

Returns a new Context object from the current context but with resources adjusted to match the metrics of display.

Context createPackageContext(String packageName, int flags)

Return a new Context object for the given application name.

Context createWindowContext(int type, Bundle options)

Creates a Context for a non-activity window.

Context createWindowContext(Display display, int type, Bundle options)

Creates a Context for a non-activity window on the given Display.

String[] databaseList()

Returns an array of strings naming the private databases associated with this Context's application package.

boolean deleteDatabase(String name)

Delete an existing private SQLiteDatabase associated with this Context's application package.

boolean deleteFile(String name)

Delete the given private file associated with this Context's application package.

boolean deleteSharedPreferences(String name)

Delete an existing shared preferences file.

void enforceCallingOrSelfPermission(String permission, String message)

If neither you nor the calling process of an IPC you are handling has been granted a particular permission, throw a SecurityException.

void enforceCallingOrSelfUriPermission(Uri uri, int modeFlags, String message)

If the calling process of an IPC or you has not been granted permission to access a specific URI, throw SecurityException.

void enforceCallingPermission(String permission, String message)

If the calling process of an IPC you are handling has not been granted a particular permission, throw a SecurityException.

void enforceCallingUriPermission(Uri uri, int modeFlags, String message)

If the calling process and uid has not been granted permission to access a specific URI, throw SecurityException.

void enforcePermission(String permission, int pid, int uid, String message)

If the given permission is not allowed for a particular process and user ID running in the system, throw a SecurityException.

void enforceUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags, String message)

Enforce both a Uri and normal permission.

void enforceUriPermission(Uri uri, int pid, int uid, int modeFlags, String message)

If a particular process and uid has not been granted permission to access a specific URI, throw SecurityException.

String[] fileList()

Returns an array of strings naming the private files associated with this Context's application package.

Context getApplicationContext()

Return the context of the single, global Application object of the current process.

ApplicationInfo getApplicationInfo()

Return the full application info for this context's package.

AssetManager getAssets()

Returns an AssetManager instance for the application's package.

AttributionSource getAttributionSource()

Context getBaseContext()
File getCacheDir()

Returns the absolute path to the application specific cache directory on the filesystem.

ClassLoader getClassLoader()

Return a class loader you can use to retrieve classes in this package.

File getCodeCacheDir()

Returns the absolute path to the application specific cache directory on the filesystem designed for storing cached code.

ContentResolver getContentResolver()

Return a ContentResolver instance for your application's package.

File getDataDir()

Returns the absolute path to the directory on the filesystem where all private files belonging to this app are stored.

File getDatabasePath(String name)

Returns the absolute path on the filesystem where a database created with openOrCreateDatabase(String, int, CursorFactory) is stored.

int getDeviceId()

Gets the device ID this context is associated with.

File getDir(String name, int mode)

Retrieve, creating if needed, a new directory in which the application can place its own custom data files.

Display getDisplay()

Get the display this context is associated with.

File getExternalCacheDir()

Returns absolute path to application-specific directory on the primary shared/external storage device where the application can place cache files it owns.

File[] getExternalCacheDirs()

Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place cache files it owns.

File getExternalFilesDir(String type)

Returns the absolute path to the directory on the primary shared/external storage device where the application can place persistent files it owns.

File[] getExternalFilesDirs(String type)

Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place persistent files it owns.

File[] getExternalMediaDirs()

This method is deprecated. These directories still exist and are scanned, but developers are encouraged to migrate to inserting content into a MediaStore collection directly, as any app can contribute new media to MediaStore with no permissions required, starting in Build.VERSION_CODES.Q.

File getFileStreamPath(String name)

Returns the absolute path on the filesystem where a file created with openFileOutput(String, int) is stored.

File getFilesDir()

Returns the absolute path to the directory on the filesystem where files created with openFileOutput(String, int) are stored.

Executor getMainExecutor()

Return an Executor that will run enqueued tasks on the main thread associated with this context.

Looper getMainLooper()

Return the Looper for the main thread of the current process.

File getNoBackupFilesDir()

Returns the absolute path to the directory on the filesystem similar to getFilesDir().

File getObbDir()

Return the primary shared/external storage directory where this application's OBB files (if there are any) can be found.

File[] getObbDirs()

Returns absolute paths to application-specific directories on all shared/external storage devices where the application's OBB files (if there are any) can be found.

String getPackageCodePath()

Return the full path to this context's primary Android package.

PackageManager getPackageManager()

Return PackageManager instance to find global package information.

String getPackageName()

Return the name of this application's package.

String getPackageResourcePath()

Return the full path to this context's primary Android package.

ContextParams getParams()

Return the set of parameters which this Context was created with, if it was created via createContext(android.content.ContextParams).

Resources getResources()

Returns a Resources instance for the application's package.

SharedPreferences getSharedPreferences(String name, int mode)

Retrieve and hold the contents of the preferences file 'name', returning a SharedPreferences through which you can retrieve and modify its values.

Object getSystemService(String name)

Return the handle to a system-level service by name.

String getSystemServiceName(Class<?> serviceClass)

Gets the name of the system-level service that is represented by the specified class.

Resources.Theme getTheme()

Return the Theme object associated with this Context.

Drawable getWallpaper()

This method is deprecated. Use WallpaperManager.get() instead.

int getWallpaperDesiredMinimumHeight()

This method is deprecated. Use WallpaperManager.getDesiredMinimumHeight() instead.

int getWallpaperDesiredMinimumWidth()

This method is deprecated. Use WallpaperManager.getDesiredMinimumWidth() instead.

void grantUriPermission(String toPackage, Uri uri, int modeFlags)

Grant permission to access a specific Uri to another package, regardless of whether that package has general permission to access the Uri's content provider.

boolean isDeviceProtectedStorage()

Indicates if the storage APIs of this Context are backed by device-protected storage.

boolean isRestricted()

Indicates whether this Context is restricted.

boolean moveDatabaseFrom(Context sourceContext, String name)

Move an existing database file from the given source storage context to this context.

boolean moveSharedPreferencesFrom(Context sourceContext, String name)

Move an existing shared preferences file from the given source storage context to this context.

FileInputStream openFileInput(String name)

Open a private file associated with this Context's application package for reading.

FileOutputStream openFileOutput(String name, int mode)

Open a private file associated with this Context's application package for writing.

SQLiteDatabase openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory, DatabaseErrorHandler errorHandler)

Open a new private SQLiteDatabase associated with this Context's application package.

SQLiteDatabase openOrCreateDatabase(String name, int mode, SQLiteDatabase.CursorFactory factory)

Open a new private SQLiteDatabase associated with this Context's application package.

Drawable peekWallpaper()

This method is deprecated. Use WallpaperManager.peek() instead.

void registerComponentCallbacks(ComponentCallbacks callback)

Add a new ComponentCallbacks to the base application of the Context, which will be called at the same times as the ComponentCallbacks methods of activities and other components are called.

void registerDeviceIdChangeListener(Executor executor, IntConsumer listener)

Adds a new device ID changed listener to the Context, which will be called when the device association is changed by the system.

Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter)

Register a BroadcastReceiver to be run in the main activity thread.

Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter, int flags)

Register to receive intent broadcasts, with the receiver optionally being exposed to Instant Apps.

Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler, int flags)

Register to receive intent broadcasts, to run in the context of scheduler.

Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler)

Register to receive intent broadcasts, to run in the context of scheduler.

void removeStickyBroadcast(Intent intent)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void removeStickyBroadcastAsUser(Intent intent, UserHandle user)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void revokeSelfPermissionsOnKill(Collection<String> permissions)

Triggers the revocation of one or more permissions for the calling package.

void revokeUriPermission(Uri uri, int modeFlags)

Remove all permissions to access a particular content provider Uri that were previously added with grantUriPermission(String, Uri, int) or any other mechanism.

void revokeUriPermission(String targetPackage, Uri uri, int modeFlags)

Remove permissions to access a particular content provider Uri that were previously added with grantUriPermission(String, Uri, int) for a specific target package.

void sendBroadcast(Intent intent, String receiverPermission, Bundle options)

Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.

void sendBroadcast(Intent intent, String receiverPermission)

Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.

void sendBroadcast(Intent intent)

Broadcast the given intent to all interested BroadcastReceivers.

void sendBroadcastAsUser(Intent intent, UserHandle user)

Version of sendBroadcast(android.content.Intent) that allows you to specify the user the broadcast will be sent to.

void sendBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission)

Version of sendBroadcast(android.content.Intent, java.lang.String) that allows you to specify the user the broadcast will be sent to.

void sendOrderedBroadcast(Intent intent, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)

Version of sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the App Op to enforce restrictions on which receivers the broadcast will be sent to.

void sendOrderedBroadcast(Intent intent, int initialCode, String receiverPermission, String receiverAppOp, BroadcastReceiver resultReceiver, Handler scheduler, String initialData, Bundle initialExtras, Bundle options)

void sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)

Version of sendBroadcast(android.content.Intent) that allows you to receive data back from the broadcast.

void sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options)

Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers.

void sendOrderedBroadcast(Intent intent, String receiverPermission, Bundle options, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)

Version of sendBroadcast(android.content.Intent) that allows you to receive data back from the broadcast.

void sendOrderedBroadcast(Intent intent, String receiverPermission)

Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers.

void sendOrderedBroadcastAsUser(Intent intent, UserHandle user, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)

Version of sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the user the broadcast will be sent to.

void sendStickyBroadcast(Intent intent)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void sendStickyBroadcast(Intent intent, Bundle options)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void sendStickyBroadcastAsUser(Intent intent, UserHandle user)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void sendStickyOrderedBroadcast(Intent intent, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void sendStickyOrderedBroadcastAsUser(Intent intent, UserHandle user, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras)

This method is deprecated. Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

void setTheme(int resid)

Set the base theme for this context.

void setWallpaper(Bitmap bitmap)

This method is deprecated. Use WallpaperManager.set() instead.

This method requires the caller to hold the permission Manifest.permission.SET_WALLPAPER.

void setWallpaper(InputStream data)

This method is deprecated. Use WallpaperManager.set() instead.

This method requires the caller to hold the permission Manifest.permission.SET_WALLPAPER.

void startActivities(Intent[] intents, Bundle options)

Launch multiple new activities.

void startActivities(Intent[] intents)

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

void startActivity(Intent intent)

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

void startActivity(Intent intent, Bundle options)

Launch a new activity.

ComponentName startForegroundService(Intent service)

Similar to startService(android.content.Intent), but with an implicit promise that the Service will call startForeground(int, android.app.Notification) once it begins running.

boolean startInstrumentation(ComponentName className, String profileFile, Bundle arguments)

Start executing an Instrumentation class.

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

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

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

Like startActivity(android.content.Intent, android.os.Bundle), but taking a IntentSender to start.

ComponentName startService(Intent service)

Request that a given application service be started.

boolean stopService(Intent name)

Request that a given application service be stopped.

void unbindService(ServiceConnection conn)

Disconnect from an application service.

void unregisterComponentCallbacks(ComponentCallbacks callback)

Remove a ComponentCallbacks object that was previously registered with registerComponentCallbacks(android.content.ComponentCallbacks).

void unregisterDeviceIdChangeListener(IntConsumer listener)

Removes a device ID changed listener from the Context.

void unregisterReceiver(BroadcastReceiver receiver)

Unregister a previously registered BroadcastReceiver.

void updateServiceGroup(ServiceConnection conn, int group, int importance)

For a service previously bound with bindService(Intent, BindServiceFlags, Executor, ServiceConnection) or a related method, change how the system manages that service's process in relation to other processes.

Protected methods

void attachBaseContext(Context base)

Set the base context for this ContextWrapper.

Inherited methods

Public constructors

ContextWrapper

Added in API level 1 
public ContextWrapper (Context base)

Parameters
base Context

Public methods

bindIsolatedService

Added in API level 29 
public boolean bindIsolatedService (Intent service, 
                int flags, 
                String instanceName, 
                Executor executor, 
                ServiceConnection conn)

Variation of bindService(Intent, BindServiceFlags, Executor, ServiceConnection) that, in the specific case of isolated services, allows the caller to generate multiple instances of a service from a single component declaration. In other words, you can use this to bind to a service that has specified R.attr.isolatedProcess and, in addition to the existing behavior of running in an isolated process, you can also through the arguments here have the system bring up multiple concurrent processes hosting their own instances of that service. The instanceName you provide here identifies the different instances, and you can use updateServiceGroup(android.content.ServiceConnection, int, int) to tell the system how it should manage each of these instances.

Parameters
service Intent: Identifies the service to connect to. The Intent must specify an explicit component name. This value cannot be null.
flags int: Operation options for the binding as per bindService(Intent, BindServiceFlags, Executor, ServiceConnection).
instanceName String: Unique identifier for the service instance. Each unique name here will result in a different service instance being created. Identifiers must only contain ASCII letters, digits, underscores, and periods. This value cannot be null.
executor Executor: Callbacks on ServiceConnection will be called on executor. Must use same instance for the same instance of ServiceConnection. This value cannot be null. Callback and listener events are dispatched through this Executor, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use Context.getMainExecutor(). Otherwise, provide an Executor that dispatches to an appropriate thread.
conn ServiceConnection: Receives information as the service is started and stopped. This must be a valid ServiceConnection object; it must not be null.
Returns
boolean Returns success of binding as per bindService(Intent, BindServiceFlags, Executor, ServiceConnection).

bindService

Added in API level 29 
public boolean bindService (Intent service, 
                int flags, 
                Executor executor, 
                ServiceConnection conn)

Same as bindService(Intent, ServiceConnection, int) with executor to control ServiceConnection callbacks.

This method only accepts a 32 bits flag, to pass in a 64 bits flag, call bindService(android.content.Intent, android.content.Context.BindServiceFlags, java.util.concurrent.Executor, android.content.ServiceConnection) instead.

Parameters
service Intent: This value cannot be null.
flags int: Value is either 0 or a combination of Context.BIND_AUTO_CREATE, Context.BIND_DEBUG_UNBIND, Context.BIND_NOT_FOREGROUND, Context.BIND_ABOVE_CLIENT, Context.BIND_ALLOW_OOM_MANAGEMENT, Context.BIND_WAIVE_PRIORITY, Context.BIND_IMPORTANT, Context.BIND_ADJUST_WITH_ACTIVITY, Context.BIND_NOT_PERCEPTIBLE, Context.BIND_ALLOW_ACTIVITY_STARTS, Context.BIND_INCLUDE_CAPABILITIES, Context.BIND_SHARED_ISOLATED_PROCESS, Context.BIND_PACKAGE_ISOLATED_PROCESS, and Context.BIND_EXTERNAL_SERVICE
executor Executor: Callbacks on ServiceConnection will be called on executor. Must use same instance for the same instance of ServiceConnection. This value cannot be null. Callback and listener events are dispatched through this Executor, providing an easy way to control which thread is used. To dispatch events through the main thread of your application, you can use Context.getMainExecutor(). Otherwise, provide an Executor that dispatches to an appropriate thread.
conn ServiceConnection: This value cannot be null.
Returns
boolean The result of the binding as described in bindService(Intent, ServiceConnection, int).

bindService

Added in API level 34 
public boolean bindService (Intent service, 
                ServiceConnection conn, 
                Context.BindServiceFlags flags)

See bindService(android.content.Intent, android.content.ServiceConnection, int) Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.

Parameters
service Intent: This value cannot be null.
conn ServiceConnection: This value cannot be null.
flags Context.BindServiceFlags: This value cannot be null.
Returns
boolean

bindService

Added in API level 1 
public boolean bindService (Intent service, 
                ServiceConnection conn, 
                int flags)

Connects to an application service, creating it if needed. This defines a dependency between your application and the service. The given conn will receive the service object when it is created and be told if it dies and restarts. The service will be considered required by the system only for as long as the calling context exists. For example, if this Context is an Activity that is stopped, the service will not be required to continue running until the Activity is resumed.

If the service does not support binding, it may return null from its onBind() method. If it does, then the ServiceConnection's onNullBinding() method will be invoked instead of onServiceConnected().

Note: This method cannot be called from a BroadcastReceiver component. A pattern you can use to communicate from a BroadcastReceiver to a Service is to call startService(Intent) with the arguments containing the command to be sent, with the service calling its Service.stopSelf(int) method when done executing that command. See the API demo App/Service/Service Start Arguments Controller for an illustration of this. It is okay, however, to use this method from a BroadcastReceiver that has been registered with registerReceiver(BroadcastReceiver, IntentFilter), since the lifetime of this BroadcastReceiver is tied to another object (the one that registered it).

This method only accepts a int type flag, to pass in a long type flag, call bindService(android.content.Intent, android.content.ServiceConnection, android.content.Context.BindServiceFlags) instead.

Parameters
service Intent: Identifies the service to connect to. The Intent must specify an explicit component name. This value cannot be null.
conn ServiceConnection: Receives information as the service is started and stopped. This must be a valid ServiceConnection object; it must not be null.
flags int: Operation options for the binding. Can be:

Returns
boolean true if the system is in the process of bringing up a service that your client has permission to bind to; false if the system couldn't find the service or if your client doesn't have permission to bind to it. Regardless of the return value, you should later call unbindService(ServiceConnection) to release the connection.

bindService

Added in API level 34 
public boolean bindService (Intent service, 
                Context.BindServiceFlags flags, 
                Executor executor, 
                ServiceConnection conn)

See bindService(android.content.Intent, int, java.util.concurrent.Executor, android.content.ServiceConnection) Call BindServiceFlags#of(long) to obtain a BindServiceFlags object.

Parameters
service Intent: This value cannot be null.
flags Context.BindServiceFlags: This value cannot be null.
executor Executor: This value cannot be null.
conn ServiceConnection: This value cannot be null.
Returns
boolean

checkCallingOrSelfPermission

Added in API level 1 
public int checkCallingOrSelfPermission (String permission)

Determine whether the calling process of an IPC or you have been granted a particular permission. This is the same as checkCallingPermission(String), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Parameters
permission String: The name of the permission being checked. This value cannot be null.
Returns
int PackageManager#PERMISSION_GRANTED if the calling pid/uid is allowed that permission, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkCallingOrSelfUriPermission

Added in API level 1 
public 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. This is the same as checkCallingUriPermission(Uri, int), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Parameters
uri Uri: The uri that is being checked.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int PackageManager#PERMISSION_GRANTED if the caller is allowed to access that uri, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkCallingOrSelfUriPermissions

Added in API level 31 
public int[] checkCallingOrSelfUriPermissions (List<Uri> uris, 
                int modeFlags)

Determine whether the calling process of an IPC or you has been granted permission to access a list of URIs. This is the same as checkCallingUriPermission(Uri, int), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Parameters
uris List: This value cannot be null.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int[] This value cannot be null.

checkCallingPermission

Added in API level 1 
public int checkCallingPermission (String permission)

Determine whether the calling process of an IPC you are handling has been granted a particular permission. This is basically the same as calling checkPermission(java.lang.String, int, int) with the pid and uid returned by Binder.getCallingPid() and Binder.getCallingUid(). One important difference is that if you are not currently processing an IPC, this function will always fail. This is done to protect against accidentally leaking permissions; you can use checkCallingOrSelfPermission(String) to avoid this protection.

Parameters
permission String: The name of the permission being checked. This value cannot be null.
Returns
int PackageManager#PERMISSION_GRANTED if the calling pid/uid is allowed that permission, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkCallingUriPermission

Added in API level 1 
public int checkCallingUriPermission (Uri uri, 
                int modeFlags)

Determine whether the calling process and uid has been granted permission to access a specific URI. This is basically the same as calling checkUriPermission(android.net.Uri, int, int, int) with the pid and uid returned by Binder.getCallingPid() and Binder.getCallingUid(). One important difference is that if you are not currently processing an IPC, this function will always fail.

Parameters
uri Uri: The uri that is being checked.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int PackageManager#PERMISSION_GRANTED if the caller is allowed to access that uri, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkCallingUriPermissions

Added in API level 31 
public int[] checkCallingUriPermissions (List<Uri> uris, 
                int modeFlags)

Determine whether the calling process and uid has been granted permission to access a list of URIs. This is basically the same as calling checkUriPermissions(java.util.List, int, int, int) with the pid and uid returned by Binder.getCallingPid() and Binder.getCallingUid(). One important difference is that if you are not currently processing an IPC, this function will always fail.

Parameters
uris List: This value cannot be null.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int[] This value cannot be null.

checkContentUriPermissionFull

Added in API level 35 
public int checkContentUriPermissionFull (Uri uri, 
                int pid, 
                int uid, 
                int modeFlags)

Determine whether a particular process and uid has been granted permission to access a specific content URI.

Unlike checkUriPermission(android.net.Uri, int, int, int), this method checks for general access to the URI's content provider, as well as explicitly granted permissions.

Note, this check will throw an IllegalArgumentException for non-content URIs.

Parameters
uri Uri: This value cannot be null.
pid int: (Optional) The process ID being checked against. If the pid is unknown, pass -1.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int PackageManager#PERMISSION_GRANTED if the given pid/uid is allowed to access that uri, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkPermission

Added in API level 1 
public 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.

Parameters
permission String: The name of the permission being checked. This value cannot be null.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
Returns
int PackageManager#PERMISSION_GRANTED if the given pid/uid is allowed that permission, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkSelfPermission

Added in API level 23 
public int checkSelfPermission (String permission)

Determine whether you have been granted a particular permission.

Parameters
permission String: The name of the permission being checked. This value cannot be null.
Returns
int PackageManager#PERMISSION_GRANTED if you have the permission, or PackageManager#PERMISSION_DENIED if not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkUriPermission

Added in API level 1 
public int checkUriPermission (Uri uri, 
                String readPermission, 
                String writePermission, 
                int pid, 
                int uid, 
                int modeFlags)

Check both a Uri and normal permission. This allows you to perform both checkPermission(String, int, int) and checkUriPermission(Uri, int, int, int) in one call.

Parameters
uri Uri: This value may be null.
readPermission String: This value may be null.
writePermission String: This value may be null.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int PackageManager#PERMISSION_GRANTED if the caller is allowed to access that uri or holds one of the given permissions, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkUriPermission

Added in API level 1 
public int checkUriPermission (Uri uri, 
                int pid, 
                int uid, 
                int modeFlags)

Determine whether a particular process and uid has been granted permission to access a specific URI. This only checks for permissions that have been explicitly granted -- if the given process/uid has more general access to the URI's content provider then this check will always fail.

Parameters
uri Uri: The uri that is being checked.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
modeFlags int: The access modes to check. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int PackageManager#PERMISSION_GRANTED if the given pid/uid is allowed to access that uri, or PackageManager#PERMISSION_DENIED if it is not. Value is PackageManager.PERMISSION_GRANTED, or PackageManager.PERMISSION_DENIED

checkUriPermissions

Added in API level 31 
public int[] checkUriPermissions (List<Uri> uris, 
                int pid, 
                int uid, 
                int modeFlags)

Determine whether a particular process and uid has been granted permission to access a list of URIs. This only checks for permissions that have been explicitly granted -- if the given process/uid has more general access to the URI's content provider then this check will always fail. Note: On SDK Version Build.VERSION_CODES.S, calling this method from a secondary-user's context will incorrectly return PackageManager#PERMISSION_DENIED for all {code uris}.

Parameters
uris List: This value cannot be null.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
modeFlags int: The access modes to check for the list of uris Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
Returns
int[] This value cannot be null.

clearWallpaper

Added in API level 1 
public void clearWallpaper ()

This method is deprecated.
Use WallpaperManager.clear() instead.

This method requires the caller to hold the permission Manifest.permission.SET_WALLPAPER.

Throws
IOException

createAttributionContext

Added in API level 30 
public Context createAttributionContext (String attributionTag)

Return a new Context object for the current Context but attribute to a different tag. In complex apps attribution tagging can be used to distinguish between separate logical parts.

Parameters
attributionTag String: This value may be null.
Returns
Context This value cannot be null.

createConfigurationContext

Added in API level 17 
public Context createConfigurationContext (Configuration overrideConfiguration)

Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration. Each call to this method returns a new instance of a Context object; Context objects are not shared, however common state (ClassLoader, other Resources for the same configuration) may be so the Context itself can be fairly lightweight.

Parameters
overrideConfiguration Configuration: A Configuration specifying what values to modify in the base Configuration of the original Context's resources. If the base configuration changes (such as due to an orientation change), the resources of this context will also change except for those that have been explicitly overridden with a value here. This value cannot be null.
Returns
Context A Context with the given configuration override.

createContext

Added in API level 31 
public Context createContext (ContextParams contextParams)

Creates a context with specific properties and behaviors.

Parameters
contextParams ContextParams: This value cannot be null.
Returns
Context This value cannot be null.

createDeviceContext

Added in API level 34 
public Context createDeviceContext (int deviceId)

Returns a new Context object from the current context but with device association given by the deviceId. Each call to this method returns a new instance of a context object. Context objects are not shared; however, common state (such as the ClassLoader and other resources for the same configuration) can be shared, so the Context itself is lightweight.

Applications that run on virtual devices may use this method to access the default device capabilities and functionality (by passing Context#DEVICE_ID_DEFAULT. Similarly, applications running on the default device may access the functionality of virtual devices.

Note that the newly created instance will be associated with the same display as the parent Context, regardless of the device ID passed here.

Parameters
deviceId int: The ID of the device to associate with this context.
Returns
Context This value cannot be null.

createDeviceProtectedStorageContext

Added in API level 24 
public Context createDeviceProtectedStorageContext ()

Return a new Context object for the current Context but whose storage APIs are backed by device-protected storage.

On devices with direct boot, data stored in this location is encrypted with a key tied to the physical device, and it can be accessed immediately after the device has booted successfully, both before and after the user has authenticated with their credentials (such as a lock pattern or PIN).

Because device-protected data is available without user authentication, you should carefully limit the data you store using this Context. For example, storing sensitive authentication tokens or passwords in the device-protected area is strongly discouraged.

If the underlying device does not have the ability to store device-protected and credential-protected data using different keys, then both storage areas will become available at the same time. They remain as two distinct storage locations on disk, and only the window of availability changes.

Each call to this method returns a new instance of a Context object; Context objects are not shared, however common state (ClassLoader, other Resources for the same configuration) may be so the Context itself can be fairly lightweight.

Returns
Context

createDisplayContext

Added in API level 17 
public Context createDisplayContext (Display display)

Returns a new Context object from the current context but with resources adjusted to match the metrics of display. Each call to this method returns a new instance of a context object. Context objects are not shared; however, common state (such as the ClassLoader and other resources for the same configuration) can be shared, so the Context itself is lightweight.

Note: This Context is not expected to be updated with new configuration if the underlying display configuration changes and the cached Resources it returns could be stale. It is suggested to use DisplayManager.DisplayListener to listen for changes and re-create an instance if necessary.

This Context is not a UI context, do not use it to access UI components or obtain a WindowManager instance.

To obtain an instance of WindowManager configured to show windows on the given display, call createWindowContext(int, android.os.Bundle) on the returned display context, then call getSystemService(java.lang.String) or getSystemService(java.lang.Class) on the returned window context.

Parameters
display Display: The display to which the current context's resources are adjusted. This value cannot be null.
Returns
Context A context for the display.

createPackageContext

Added in API level 1 
public Context createPackageContext (String packageName, 
                int flags)

Return a new Context object for the given application name. This Context is the same as what the named application gets when it is launched, containing the same resources and class loader. Each call to this method returns a new instance of a Context object; Context objects are not shared, however they share common state (Resources, ClassLoader, etc) so the Context instance itself is fairly lightweight.

Throws PackageManager.NameNotFoundException if there is no application with the given package name.

Throws SecurityException if the Context requested can not be loaded into the caller's process for security reasons (see CONTEXT_INCLUDE_CODE for more information}.

Parameters
packageName String: Name of the application's package.
flags int: Option flags. Value is either 0 or a combination of Context.CONTEXT_INCLUDE_CODE, Context.CONTEXT_IGNORE_SECURITY, Context.CONTEXT_RESTRICTED, android.content.Context.CONTEXT_DEVICE_PROTECTED_STORAGE, android.content.Context.CONTEXT_CREDENTIAL_PROTECTED_STORAGE, and android.content.Context.CONTEXT_REGISTER_PACKAGE
Returns
Context A Context for the application.
Throws
PackageManager.NameNotFoundException

createWindowContext

Added in API level 30 
public Context createWindowContext (int type, 
                Bundle options)

Creates a Context for a non-activity window.

A window context is a context that can be used to add non-activity windows, such as WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY. A window context must be created from a context that has an associated Display, such as Activity or a context created with createDisplayContext(android.view.Display).

The window context is created with the appropriate Configuration for the area of the display that the windows created with it can occupy; it must be used when inflating views, such that they can be inflated with proper Resources. Below is a sample code to add an application overlay window on the primary display: 

 ...
 final DisplayManager dm = anyContext.getSystemService(DisplayManager.class);
 final Display primaryDisplay = dm.getDisplay(DEFAULT_DISPLAY);
 final Context windowContext = anyContext.createDisplayContext(primaryDisplay)
         .createWindowContext(TYPE_APPLICATION_OVERLAY, null);
 final View overlayView = Inflater.from(windowContext).inflate(someLayoutXml, null);

 // WindowManager.LayoutParams initialization
 ...
 // The types used in addView and createWindowContext must match.
 mParams.type = TYPE_APPLICATION_OVERLAY;
 ...

 windowContext.getSystemService(WindowManager.class).addView(overlayView, mParams);

This context's configuration and resources are adjusted to an area of the display where the windows with provided type will be added. Note that all windows associated with the same context will have an affinity and can only be moved together between different displays or areas on a display. If there is a need to add different window types, or non-associated windows, separate Contexts should be used.

Creating a window context is an expensive operation. Misuse of this API may lead to a huge performance drop. The best practice is to use the same window context when possible. An approach is to create one window context with specific window type and display and use it everywhere it's needed.

After Build.VERSION_CODES#S, window context provides the capability to receive configuration changes for existing token by overriding the token of the WindowManager.LayoutParams passed in WindowManager#addView(View, LayoutParams). This is useful when an application needs to attach its window to an existing activity for window token sharing use-case.

Note that the window context in Build.VERSION_CODES#R didn't have this capability. This is a no-op for the window context in Build.VERSION_CODES#R.

Below is sample code to attach an existing token to a window context: 
 final DisplayManager dm = anyContext.getSystemService(DisplayManager.class);
 final Display primaryDisplay = dm.getDisplay(DEFAULT_DISPLAY);
 final Context windowContext = anyContext.createWindowContext(primaryDisplay,
         TYPE_APPLICATION, null);

 // Get an existing token.
 final IBinder existingToken = activity.getWindow().getAttributes().token;

 // The types used in addView() and createWindowContext() must match.
 final WindowManager.LayoutParams params = new WindowManager.LayoutParams(TYPE_APPLICATION);
 params.token = existingToken;

 // After WindowManager#addView(), the server side will extract the provided token from
 // LayoutParams#token (existingToken in the sample code), and switch to propagate
 // configuration changes from the node associated with the provided token.
 windowContext.getSystemService(WindowManager.class).addView(overlayView, mParams);

After Build.VERSION_CODES#S, window context provides the capability to listen to its Configuration changes by calling registerComponentCallbacks(android.content.ComponentCallbacks), while other kinds of Context will register the ComponentCallbacks to its Application context. Note that window context only propagate ComponentCallbacks#onConfigurationChanged(Configuration) callback. ComponentCallbacks#onLowMemory() or other callbacks in ComponentCallbacks2 won't be invoked.

Note that using Application or Service context for UI-related queries may result in layout or continuity issues on devices with variable screen sizes (e.g. foldables) or in multi-window modes, since these non-UI contexts may not reflect the Configuration changes for the visual container.

Parameters
type int: Value is WindowManager.LayoutParams.TYPE_BASE_APPLICATION, WindowManager.LayoutParams.TYPE_APPLICATION, WindowManager.LayoutParams.TYPE_APPLICATION_STARTING, WindowManager.LayoutParams.TYPE_DRAWN_APPLICATION, WindowManager.LayoutParams.TYPE_APPLICATION_PANEL, WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA, WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL, WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG, android.view.WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL, WindowManager.LayoutParams.TYPE_STATUS_BAR, WindowManager.LayoutParams.TYPE_SEARCH_BAR, WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT, android.view.WindowManager.LayoutParams.TYPE_KEYGUARD, WindowManager.LayoutParams.TYPE_TOAST, WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, WindowManager.LayoutParams.TYPE_PRIORITY_PHONE, WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG, WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG, WindowManager.LayoutParams.TYPE_SYSTEM_ERROR, WindowManager.LayoutParams.TYPE_INPUT_METHOD, WindowManager.LayoutParams.TYPE_INPUT_METHOD_DIALOG, WindowManager.LayoutParams.TYPE_WALLPAPER, android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL, android.view.WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_DRAG, android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL, android.view.WindowManager.LayoutParams.TYPE_POINTER, android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR, android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_BOOT_PROGRESS, android.view.WindowManager.LayoutParams.TYPE_INPUT_CONSUMER, android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL, android.view.WindowManager.LayoutParams.TYPE_DISPLAY_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_MAGNIFICATION_OVERLAY, WindowManager.LayoutParams.TYPE_PRIVATE_PRESENTATION, android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION, WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION_STARTING, android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER, android.view.WindowManager.LayoutParams.TYPE_QS_DIALOG, android.view.WindowManager.LayoutParams.TYPE_SCREENSHOT, android.view.WindowManager.LayoutParams.TYPE_PRESENTATION, WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_ACCESSIBILITY_MAGNIFICATION_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_NOTIFICATION_SHADE, or android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_ADDITIONAL
options Bundle: This value may be null.
Returns
Context This value cannot be null.

createWindowContext

Added in API level 31 
public Context createWindowContext (Display display, 
                int type, 
                Bundle options)

Creates a Context for a non-activity window on the given Display.

Similar to createWindowContext(int, android.os.Bundle), but the display is passed in, instead of implicitly using the original Context's Display.

Parameters
display Display: This value cannot be null.
type int: Value is WindowManager.LayoutParams.TYPE_BASE_APPLICATION, WindowManager.LayoutParams.TYPE_APPLICATION, WindowManager.LayoutParams.TYPE_APPLICATION_STARTING, WindowManager.LayoutParams.TYPE_DRAWN_APPLICATION, WindowManager.LayoutParams.TYPE_APPLICATION_PANEL, WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA, WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL, WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG, android.view.WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_APPLICATION_ABOVE_SUB_PANEL, WindowManager.LayoutParams.TYPE_STATUS_BAR, WindowManager.LayoutParams.TYPE_SEARCH_BAR, WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT, android.view.WindowManager.LayoutParams.TYPE_KEYGUARD, WindowManager.LayoutParams.TYPE_TOAST, WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, WindowManager.LayoutParams.TYPE_PRIORITY_PHONE, WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG, WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG, WindowManager.LayoutParams.TYPE_SYSTEM_ERROR, WindowManager.LayoutParams.TYPE_INPUT_METHOD, WindowManager.LayoutParams.TYPE_INPUT_METHOD_DIALOG, WindowManager.LayoutParams.TYPE_WALLPAPER, android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL, android.view.WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_DRAG, android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL, android.view.WindowManager.LayoutParams.TYPE_POINTER, android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR, android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_BOOT_PROGRESS, android.view.WindowManager.LayoutParams.TYPE_INPUT_CONSUMER, android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL, android.view.WindowManager.LayoutParams.TYPE_DISPLAY_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_MAGNIFICATION_OVERLAY, WindowManager.LayoutParams.TYPE_PRIVATE_PRESENTATION, android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION, WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION_STARTING, android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER, android.view.WindowManager.LayoutParams.TYPE_QS_DIALOG, android.view.WindowManager.LayoutParams.TYPE_SCREENSHOT, android.view.WindowManager.LayoutParams.TYPE_PRESENTATION, WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_ACCESSIBILITY_MAGNIFICATION_OVERLAY, android.view.WindowManager.LayoutParams.TYPE_NOTIFICATION_SHADE, or android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_ADDITIONAL
options Bundle: This value may be null.
Returns
Context This value cannot be null.

databaseList

Added in API level 1 
public String[] databaseList ()

Returns an array of strings naming the private databases associated with this Context's application package.

Returns
String[] Array of strings naming the private databases.

deleteDatabase

Added in API level 1 
public boolean deleteDatabase (String name)

Delete an existing private SQLiteDatabase associated with this Context's application package.

Parameters
name String: The name (unique in the application package) of the database.
Returns
boolean true if the database was successfully deleted; else false.

deleteFile

Added in API level 1 
public boolean deleteFile (String name)

Delete the given private file associated with this Context's application package.

Parameters
name String: The name of the file to delete; can not contain path separators.
Returns
boolean true if the file was successfully deleted; else false.

deleteSharedPreferences

Added in API level 24 
public boolean deleteSharedPreferences (String name)

Delete an existing shared preferences file.

Parameters
name String: The name (unique in the application package) of the shared preferences file.
Returns
boolean true if the shared preferences file was successfully deleted; else false.

enforceCallingOrSelfPermission

Added in API level 1 
public 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. This is the same as enforceCallingPermission(String, String), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Parameters
permission String: The name of the permission being checked. This value cannot be null.
message String: This value may be null.

enforceCallingOrSelfUriPermission

Added in API level 1 
public 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. This is the same as enforceCallingUriPermission(Uri, int, String), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Parameters
uri Uri: The uri that is being checked.
modeFlags int: The access modes to enforce. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
message String: A message to include in the exception if it is thrown.

enforceCallingPermission

Added in API level 1 
public 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. This is basically the same as calling enforcePermission(java.lang.String, int, int, java.lang.String) with the pid and uid returned by Binder.getCallingPid() and Binder.getCallingUid(). One important difference is that if you are not currently processing an IPC, this function will always throw the SecurityException. This is done to protect against accidentally leaking permissions; you can use enforceCallingOrSelfPermission(String, String) to avoid this protection.

Parameters
permission String: The name of the permission being checked. This value cannot be null.
message String: This value may be null.

enforceCallingUriPermission

Added in API level 1 
public void enforceCallingUriPermission (Uri uri, 
                int modeFlags, 
                String message)

If the calling process and uid has not been granted permission to access a specific URI, throw SecurityException. This is basically the same as calling enforceUriPermission(android.net.Uri, int, int, int, java.lang.String) with the pid and uid returned by Binder.getCallingPid() and Binder.getCallingUid(). One important difference is that if you are not currently processing an IPC, this function will always throw a SecurityException.

Parameters
uri Uri: The uri that is being checked.
modeFlags int: The access modes to enforce. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
message String: A message to include in the exception if it is thrown.

enforcePermission

Added in API level 1 
public 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.

Parameters
permission String: The name of the permission being checked. This value cannot be null.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
message String: This value may be null.

enforceUriPermission

Added in API level 1 
public void enforceUriPermission (Uri uri, 
                String readPermission, 
                String writePermission, 
                int pid, 
                int uid, 
                int modeFlags, 
                String message)

Enforce both a Uri and normal permission. This allows you to perform both enforcePermission(String, int, int, String) and enforceUriPermission(Uri, int, int, int, String) in one call.

Parameters
uri Uri: This value may be null.
readPermission String: This value may be null.
writePermission String: This value may be null.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
modeFlags int: The access modes to enforce. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
message String: This value may be null.

enforceUriPermission

Added in API level 1 
public void enforceUriPermission (Uri uri, 
                int pid, 
                int uid, 
                int modeFlags, 
                String message)

If a particular process and uid has not been granted permission to access a specific URI, throw SecurityException. This only checks for permissions that have been explicitly granted -- if the given process/uid has more general access to the URI's content provider then this check will always fail.

Parameters
uri Uri: The uri that is being checked.
pid int: The process ID being checked against. Must be > 0.
uid int: The UID being checked against. A uid of 0 is the root user, which will pass every permission check.
modeFlags int: The access modes to enforce. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION
message String: A message to include in the exception if it is thrown.

fileList

Added in API level 1 
public String[] fileList ()

Returns an array of strings naming the private files associated with this Context's application package.

Returns
String[] Array of strings naming the private files.

getApplicationContext

Added in API level 1 
public Context getApplicationContext ()

Return the context of the single, global Application object of the current process. This generally should only be used if you need a Context whose lifecycle is separate from the current context, that is tied to the lifetime of the process rather than the current component.

Consider for example how this interacts with registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter):

  • If used from an Activity context, the receiver is being registered within that activity. This means that you are expected to unregister before the activity is done being destroyed; in fact if you do not do so, the framework will clean up your leaked registration as it removes the activity and log an error. Thus, if you use the Activity context to register a receiver that is static (global to the process, not associated with an Activity instance) then that registration will be removed on you at whatever point the activity you used is destroyed.

  • If used from the Context returned here, the receiver is being registered with the global state associated with your application. Thus it will never be unregistered for you. This is necessary if the receiver is associated with static data, not a particular component. However using the ApplicationContext elsewhere can easily lead to serious leaks if you forget to unregister, unbind, etc.

Returns
Context

getApplicationInfo

Added in API level 4 
public ApplicationInfo getApplicationInfo ()

Return the full application info for this context's package.

Returns
ApplicationInfo

getAssets

Added in API level 1 
public AssetManager getAssets ()

Returns an AssetManager instance for the application's package.

Note: Implementations of this method should return an AssetManager instance that is consistent with the Resources instance returned by getResources(). For example, they should share the same Configuration object.

Returns
AssetManager an AssetManager instance for the application's package

getAttributionSource

Added in API level 31 
public AttributionSource getAttributionSource ()

Returns
AttributionSource This value cannot be null.

getBaseContext

Added in API level 1 
public Context getBaseContext ()

Returns
Context the base context as set by the constructor or setBaseContext

getCacheDir

Added in API level 1 
public File getCacheDir ()

Returns the absolute path to the application specific cache directory on the filesystem.

The system will automatically delete files in this directory as disk space is needed elsewhere on the device. The system will always delete older files first, as reported by File#lastModified(). If desired, you can exert more control over how files are deleted using StorageManager#setCacheBehaviorGroup(File, boolean) and StorageManager#setCacheBehaviorTombstone(File, boolean).

Apps are strongly encouraged to keep their usage of cache space below the quota returned by StorageManager#getCacheQuotaBytes(java.util.UUID). If your app goes above this quota, your cached files will be some of the first to be deleted when additional disk space is needed. Conversely, if your app stays under this quota, your cached files will be some of the last to be deleted when additional disk space is needed.

Note that your cache quota will change over time depending on how frequently the user interacts with your app, and depending on how much system-wide disk space is used.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

Apps require no extra permissions to read or write to the returned path, since this path lives in their private storage.

Returns
File The path of the directory holding application cache files.

getClassLoader

Added in API level 1 
public ClassLoader getClassLoader ()

Return a class loader you can use to retrieve classes in this package.

Returns
ClassLoader

getCodeCacheDir

Added in API level 21 
public File getCodeCacheDir ()

Returns the absolute path to the application specific cache directory on the filesystem designed for storing cached code.

The system will delete any files stored in this location both when your specific application is upgraded, and when the entire platform is upgraded.

This location is optimal for storing compiled or optimized code generated by your application at runtime.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

Apps require no extra permissions to read or write to the returned path, since this path lives in their private storage.

Returns
File The path of the directory holding application code cache files.

getContentResolver

Added in API level 1 
public ContentResolver getContentResolver ()

Return a ContentResolver instance for your application's package.

Returns
ContentResolver

getDataDir

Added in API level 24 
public File getDataDir ()

Returns the absolute path to the directory on the filesystem where all private files belonging to this app are stored. Apps should not use this path directly; they should instead use getFilesDir(), getCacheDir(), getDir(java.lang.String, int), or other storage APIs on this class.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

No additional permissions are required for the calling app to read or write files under the returned path.

Returns
File

getDatabasePath

Added in API level 1 
public File getDatabasePath (String name)

Returns the absolute path on the filesystem where a database created with openOrCreateDatabase(String, int, CursorFactory) is stored.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

Parameters
name String: The name of the database for which you would like to get its path.
Returns
File An absolute path to the given database.

getDeviceId

Added in API level 34 
public int getDeviceId ()

Gets the device ID this context is associated with. Applications can use this method to determine whether they are running on a virtual device and identify that device. The device ID of the host device is Context#DEVICE_ID_DEFAULT

If the underlying device ID is changed by the system, for example, when an Activity is moved to a different virtual device, applications can register to listen to changes by calling Context#registerDeviceIdChangeListener(Executor, IntConsumer).

This method will only return a reliable value for this instance if it was created with Context#createDeviceContext(int), or if this instance is a UI or Display Context. Contexts created with Context#createDeviceContext(int) will have an explicit device association, which will never change, even if the underlying device is closed or is removed. UI Contexts and Display Contexts are already associated with a display, so if the device association is not explicitly given, Context#getDeviceId() will return the ID of the device associated with the associated display. The system can assign an arbitrary device id value for Contexts not logically associated with a device.

Returns
int the ID of the device this context is associated with.

getDir

Added in API level 1 
public File getDir (String name, 
                int mode)

Retrieve, creating if needed, a new directory in which the application can place its own custom data files. You can use the returned File object to create and access files in this directory. Note that files created through a File object will only be accessible by your own application; you can only set the mode of the entire directory, not of individual files.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

Apps require no extra permissions to read or write to the returned path, since this path lives in their private storage.

Parameters
name String: Name of the directory to retrieve. This is a directory that is created as part of your application data.
mode int: Operating mode. Value is either 0 or a combination of Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, and Context.MODE_APPEND
Returns
File A File object for the requested directory. The directory will have been created if it does not already exist.

getDisplay

Added in API level 30 
public Display getDisplay ()

Get the display this context is associated with. Applications should use this method with Activity or a context associated with a Display via createDisplayContext(android.view.Display) to get a display object associated with a Context, or DisplayManager.getDisplay(int) to get a display object by id.

Returns
Display This value may be null.

getExternalCacheDir

Added in API level 8 
public 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. These files are internal to the application, and not typically visible to the user as media.

This is like getCacheDir() in that these files will be deleted when the application is uninstalled, however there are some important differences:

If a shared storage device is emulated (as determined by Environment#isExternalStorageEmulated(File)), its contents are backed by a private user data partition, which means there is little benefit to storing data here instead of the private directory returned by getCacheDir().

Starting in Build.VERSION_CODES.KITKAT, no permissions are required to read or write to the returned path; it's always accessible to the calling app. This only applies to paths generated for package name of the calling application. To access paths belonging to other packages, Manifest.permission.WRITE_EXTERNAL_STORAGE and/or Manifest.permission.READ_EXTERNAL_STORAGE are required.

On devices with multiple users (as described by UserManager), each user has their own isolated shared storage. Applications only have access to the shared storage for the user they're running as.

The returned path may change over time if different shared storage media is inserted, so only relative paths should be persisted.

Returns
File This value may be null.

getExternalCacheDirs

Added in API level 19 
public File[] getExternalCacheDirs ()

Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place cache files it owns. These files are internal to the application, and not typically visible to the user as media.

This is like getCacheDir() in that these files will be deleted when the application is uninstalled, however there are some important differences:

If a shared storage device is emulated (as determined by Environment#isExternalStorageEmulated(File)), its contents are backed by a private user data partition, which means there is little benefit to storing data here instead of the private directory returned by getCacheDir().

Shared storage devices returned here are considered a stable part of the device, including physical media slots under a protective cover. The returned paths do not include transient devices, such as USB flash drives connected to handheld devices.

An application may store data on any or all of the returned devices. For example, an app may choose to store large files on the device with the most available space, as measured by StatFs.

No additional permissions are required for the calling app to read or write files under the returned path. Write access outside of these paths on secondary external storage devices is not available.

The returned paths may change over time if different shared storage media is inserted, so only relative paths should be persisted.

Returns
File[] the absolute paths to application-specific directories. Some individual paths may be null if that shared storage is not currently available. The first path returned is the same as getExternalCacheDir().

getExternalFilesDir

Added in API level 8 
public 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. These files are internal to the applications, and not typically visible to the user as media.

This is like getFilesDir() in that these files will be deleted when the application is uninstalled, however there are some important differences:

If a shared storage device is emulated (as determined by Environment#isExternalStorageEmulated(File)), its contents are backed by a private user data partition, which means there is little benefit to storing data here instead of the private directories returned by getFilesDir(), etc.

Starting in Build.VERSION_CODES.KITKAT, no permissions are required to read or write to the returned path; it's always accessible to the calling app. This only applies to paths generated for package name of the calling application. To access paths belonging to other packages, Manifest.permission.WRITE_EXTERNAL_STORAGE and/or Manifest.permission.READ_EXTERNAL_STORAGE are required.

On devices with multiple users (as described by UserManager), each user has their own isolated shared storage. Applications only have access to the shared storage for the user they're running as.

The returned path may change over time if different shared storage media is inserted, so only relative paths should be persisted.

Here is an example of typical code to manipulate a file in an application's shared storage: 

void createExternalStoragePrivateFile() {
    // Create a path where we will place our private file on external
    // storage.
    File file = new File(getExternalFilesDir(null), "DemoFile.jpg");

    try {
        // Very simple code to copy a picture from the application's
        // resource into the external file.  Note that this code does
        // no error checking, and assumes the picture is small (does not
        // try to copy it in chunks).  Note that if external storage is
        // not currently mounted this will silently fail.
        InputStream is = getResources().openRawResource(R.drawable.balloons);
        OutputStream os = new FileOutputStream(file);
        byte[] data = new byte[is.available()];
        is.read(data);
        os.write(data);
        is.close();
        os.close();
    } catch (IOException e) {
        // Unable to create file, likely because external storage is
        // not currently mounted.
        Log.w("ExternalStorage", "Error writing " + file, e);
    }
}

void deleteExternalStoragePrivateFile() {
    // Get path for the file on external storage.  If external
    // storage is not currently mounted this will fail.
    File file = new File(getExternalFilesDir(null), "DemoFile.jpg");
    file.delete();
}

boolean hasExternalStoragePrivateFile() {
    // Get path for the file on external storage.  If external
    // storage is not currently mounted this will fail.
    File file = new File(getExternalFilesDir(null), "DemoFile.jpg");
    return file.exists();
}

If you supply a non-null type to this function, the returned file will be a path to a sub-directory of the given type. Though these files are not automatically scanned by the media scanner, you can explicitly add them to the media database with MediaScannerConnection.scanFile. Note that this is not the same as Environment.getExternalStoragePublicDirectory(), which provides directories of media shared by all applications. The directories returned here are owned by the application, and their contents will be removed when the application is uninstalled. Unlike Environment.getExternalStoragePublicDirectory(), the directory returned here will be automatically created for you.

Here is an example of typical code to manipulate a picture in an application's shared storage and add it to the media database: 

void createExternalStoragePrivatePicture() {
    // Create a path where we will place our picture in our own private
    // pictures directory.  Note that we don't really need to place a
    // picture in DIRECTORY_PICTURES, since the media scanner will see
    // all media in these directories; this may be useful with other
    // media types such as DIRECTORY_MUSIC however to help it classify
    // your media for display to the user.
    File path = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    File file = new File(path, "DemoPicture.jpg");

    try {
        // Very simple code to copy a picture from the application's
        // resource into the external file.  Note that this code does
        // no error checking, and assumes the picture is small (does not
        // try to copy it in chunks).  Note that if external storage is
        // not currently mounted this will silently fail.
        InputStream is = getResources().openRawResource(R.drawable.balloons);
        OutputStream os = new FileOutputStream(file);
        byte[] data = new byte[is.available()];
        is.read(data);
        os.write(data);
        is.close();
        os.close();

        // Tell the media scanner about the new file so that it is
        // immediately available to the user.
        MediaScannerConnection.scanFile(this,
                new String[] { file.toString() }, null,
                new MediaScannerConnection.OnScanCompletedListener() {
            public void onScanCompleted(String path, Uri uri) {
                Log.i("ExternalStorage", "Scanned " + path + ":");
                Log.i("ExternalStorage", "-> uri=" + uri);
            }
        });
    } catch (IOException e) {
        // Unable to create file, likely because external storage is
        // not currently mounted.
        Log.w("ExternalStorage", "Error writing " + file, e);
    }
}

void deleteExternalStoragePrivatePicture() {
    // Create a path where we will place our picture in the user's
    // public pictures directory and delete the file.  If external
    // storage is not currently mounted this will fail.
    File path = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    if (path != null) {
        File file = new File(path, "DemoPicture.jpg");
        file.delete();
    }
}

boolean hasExternalStoragePrivatePicture() {
    // Create a path where we will place our picture in the user's
    // public pictures directory and check if the file exists.  If
    // external storage is not currently mounted this will think the
    // picture doesn't exist.
    File path = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    if (path != null) {
        File file = new File(path, "DemoPicture.jpg");
        return file.exists();
    }
    return false;
}

Parameters
type String: This value may be null.
Returns
File This value may be null.

getExternalFilesDirs

Added in API level 19 
public 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. These files are internal to the application, and not typically visible to the user as media.

This is like getFilesDir() in that these files will be deleted when the application is uninstalled, however there are some important differences:

If a shared storage device is emulated (as determined by Environment#isExternalStorageEmulated(File)), its contents are backed by a private user data partition, which means there is little benefit to storing data here instead of the private directories returned by getFilesDir(), etc.

Shared storage devices returned here are considered a stable part of the device, including physical media slots under a protective cover. The returned paths do not include transient devices, such as USB flash drives connected to handheld devices.

An application may store data on any or all of the returned devices. For example, an app may choose to store large files on the device with the most available space, as measured by StatFs.

No additional permissions are required for the calling app to read or write files under the returned path. Write access outside of these paths on secondary external storage devices is not available.

The returned path may change over time if different shared storage media is inserted, so only relative paths should be persisted.

Parameters
type String: The type of files directory to return. May be null for the root of the files directory or one of the following constants for a subdirectory: Environment.DIRECTORY_MUSIC, Environment.DIRECTORY_PODCASTS, Environment.DIRECTORY_RINGTONES, Environment.DIRECTORY_ALARMS, Environment.DIRECTORY_NOTIFICATIONS, Environment.DIRECTORY_PICTURES, or Environment.DIRECTORY_MOVIES.
Returns
File[] the absolute paths to application-specific directories. Some individual paths may be null if that shared storage is not currently available. The first path returned is the same as getExternalFilesDir(java.lang.String).

getExternalMediaDirs

Added in API level 21 
public File[] getExternalMediaDirs ()

This method is deprecated.
These directories still exist and are scanned, but developers are encouraged to migrate to inserting content into a MediaStore collection directly, as any app can contribute new media to MediaStore with no permissions required, starting in Build.VERSION_CODES.Q.

Returns absolute paths to application-specific directories on all shared/external storage devices where the application can place media files. These files are scanned and made available to other apps through MediaStore.

This is like getExternalFilesDirs(String) in that these files will be deleted when the application is uninstalled, however there are some important differences:

Shared storage devices returned here are considered a stable part of the device, including physical media slots under a protective cover. The returned paths do not include transient devices, such as USB flash drives connected to handheld devices.

An application may store data on any or all of the returned devices. For example, an app may choose to store large files on the device with the most available space, as measured by StatFs.

No additional permissions are required for the calling app to read or write files under the returned path. Write access outside of these paths on secondary external storage devices is not available.

The returned paths may change over time if different shared storage media is inserted, so only relative paths should be persisted.

Returns
File[] the absolute paths to application-specific directories. Some individual paths may be null if that shared storage is not currently available.

getFileStreamPath

Added in API level 1 
public File getFileStreamPath (String name)

Returns the absolute path on the filesystem where a file created with openFileOutput(String, int) is stored.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

Parameters
name String: The name of the file for which you would like to get its path.
Returns
File An absolute path to the given file.

getFilesDir

Added in API level 1 
public File getFilesDir ()

Returns the absolute path to the directory on the filesystem where files created with openFileOutput(String, int) are stored.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

No additional permissions are required for the calling app to read or write files under the returned path.

Returns
File The path of the directory holding application files.

getMainExecutor

Added in API level 28 
public Executor getMainExecutor ()

Return an Executor that will run enqueued tasks on the main thread associated with this context. This is the thread used to dispatch calls to application components (activities, services, etc).

Returns
Executor

getMainLooper

Added in API level 1 
public Looper getMainLooper ()

Return the Looper for the main thread of the current process. This is the thread used to dispatch calls to application components (activities, services, etc).

By definition, this method returns the same result as would be obtained by calling Looper.getMainLooper().

Returns
Looper The main looper.

getNoBackupFilesDir

Added in API level 21 
public File getNoBackupFilesDir ()

Returns the absolute path to the directory on the filesystem similar to getFilesDir(). The difference is that files placed under this directory will be excluded from automatic backup to remote storage. See BackupAgent for a full discussion of the automatic backup mechanism in Android.

The returned path may change over time if the calling app is moved to an adopted storage device, so only relative paths should be persisted.

No additional permissions are required for the calling app to read or write files under the returned path.

Returns
File The path of the directory holding application files that will not be automatically backed up to remote storage.

getObbDir

Added in API level 11 
public File getObbDir ()

Return the primary shared/external storage directory where this application's OBB files (if there are any) can be found. Note if the application does not have any OBB files, this directory may not exist.

This is like getFilesDir() in that these files will be deleted when the application is uninstalled, however there are some important differences:

Starting in Build.VERSION_CODES.KITKAT, no permissions are required to read or write to the path that this method returns. However, starting from Build.VERSION_CODES.M, to read the OBB expansion files, you must declare the Manifest.permission.READ_EXTERNAL_STORAGE permission in the app manifest and ask for permission at runtime as follows:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="23" />

Starting from Build.VERSION_CODES.N, Manifest.permission.READ_EXTERNAL_STORAGE permission is not required, so don\u2019t ask for this permission at runtime. To handle both cases, your app must first try to read the OBB file, and if it fails, you must request Manifest.permission.READ_EXTERNAL_STORAGE permission at runtime.

The following code snippet shows how to do this: 

 File obb = new File(obb_filename);
 boolean open_failed = false;

 try {
     BufferedReader br = new BufferedReader(new FileReader(obb));
     open_failed = false;
     ReadObbFile(br);
 } catch (IOException e) {
     open_failed = true;
 }

 if (open_failed) {
     // request READ_EXTERNAL_STORAGE permission before reading OBB file
     ReadObbFileWithPermission();
 }
On devices with multiple users (as described by UserManager), multiple users may share the same OBB storage location. Applications should ensure that multiple instances running under different users don't interfere with each other.

Returns
File the absolute path to application-specific directory. May return null if shared storage is not currently available.

getObbDirs

Added in API level 19 
public 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. Note if the application does not have any OBB files, these directories may not exist.

This is like getFilesDir() in that these files will be deleted when the application is uninstalled, however there are some important differences:

Shared storage devices returned here are considered a stable part of the device, including physical media slots under a protective cover. The returned paths do not include transient devices, such as USB flash drives connected to handheld devices.

An application may store data on any or all of the returned devices. For example, an app may choose to store large files on the device with the most available space, as measured by StatFs.

No additional permissions are required for the calling app to read or write files under the returned path. Write access outside of these paths on secondary external storage devices is not available.

Returns
File[] the absolute paths to application-specific directories. Some individual paths may be null if that shared storage is not currently available. The first path returned is the same as getObbDir()

getPackageCodePath

Added in API level 1 
public String getPackageCodePath ()

Return the full path to this context's primary Android package. The Android package is a ZIP file which contains application's primary code and assets.

Note: this is not generally useful for applications, since they should not be directly accessing the file system.

Returns
String String Path to the code and assets.

getPackageManager

Added in API level 1 
public PackageManager getPackageManager ()

Return PackageManager instance to find global package information.

Returns
PackageManager

getPackageName

Added in API level 1 
public String getPackageName ()

Return the name of this application's package.

Returns
String

getPackageResourcePath

Added in API level 1 
public String getPackageResourcePath ()

Return the full path to this context's primary Android package. The Android package is a ZIP file which contains the application's primary resources.

Note: this is not generally useful for applications, since they should not be directly accessing the file system.

Returns
String String Path to the resources.

getParams

Added in API level 31 
public ContextParams getParams ()

Return the set of parameters which this Context was created with, if it was created via createContext(android.content.ContextParams).

Returns
ContextParams This value may be null.

getResources

Added in API level 1 
public Resources getResources ()

Returns a Resources instance for the application's package.

Note: Implementations of this method should return a Resources instance that is consistent with the AssetManager instance returned by getAssets(). For example, they should share the same Configuration object.

Returns
Resources a Resources instance for the application's package

getSharedPreferences

Added in API level 1 
public 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. Only one instance of the SharedPreferences object is returned to any callers for the same name, meaning they will see each other's edits as soon as they are made.

This method is thread-safe.

If the preferences directory does not already exist, it will be created when this method is called.

If a preferences file by this name does not exist, it will be created when you retrieve an editor (SharedPreferences#edit()) and then commit changes (SharedPreferences.Editor.commit() or SharedPreferences.Editor#apply()).

Parameters
name String: Desired preferences file.
mode int: Operating mode. Value is either 0 or a combination of Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, and Context.MODE_MULTI_PROCESS
Returns
SharedPreferences The single SharedPreferences instance that can be used to retrieve and modify the preference values.

getSystemService

Added in API level 1 
public Object getSystemService (String name)

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

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

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

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

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

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

getSystemServiceName

Added in API level 23 
public String getSystemServiceName (Class<?> serviceClass)

Gets the name of the system-level service that is represented by the specified class.

Parameters
serviceClass Class: The class of the desired service. This value cannot be null.
Returns
String The service name or null if the class is not a supported system service.

getTheme

Added in API level 1 
public Resources.Theme getTheme ()

Return the Theme object associated with this Context.

Returns
Resources.Theme

getWallpaper

Added in API level 1 
public Drawable getWallpaper ()

This method is deprecated.
Use WallpaperManager.get() instead.

Returns
Drawable

getWallpaperDesiredMinimumHeight

Added in API level 1 
public int getWallpaperDesiredMinimumHeight ()

This method is deprecated.
Use WallpaperManager.getDesiredMinimumHeight() instead.

Returns
int

getWallpaperDesiredMinimumWidth

Added in API level 1 
public int getWallpaperDesiredMinimumWidth ()

This method is deprecated.
Use WallpaperManager.getDesiredMinimumWidth() instead.

Returns
int

grantUriPermission

Added in API level 1 
public 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. This can be used to grant specific, temporary permissions, typically in response to user interaction (such as the user opening an attachment that you would like someone else to display).

Normally you should use Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION with the Intent being used to start an activity instead of this function directly. If you use this function directly, you should be sure to call revokeUriPermission(Uri, int) when the target should no longer be allowed to access it.

To succeed, the content provider owning the Uri must have set the grantUriPermissions attribute in its manifest or included the <grant-uri-permissions> tag.

Parameters
toPackage String: The package you would like to allow to access the Uri.
uri Uri: The Uri you would like to grant access to.
modeFlags int: The desired access modes. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, Intent.FLAG_GRANT_WRITE_URI_PERMISSION, Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION, and Intent.FLAG_GRANT_PREFIX_URI_PERMISSION

isDeviceProtectedStorage

Added in API level 24 
public boolean isDeviceProtectedStorage ()

Indicates if the storage APIs of this Context are backed by device-protected storage.

Returns
boolean

isRestricted

Added in API level 4 
public boolean isRestricted ()

Indicates whether this Context is restricted.

Returns
boolean true if this Context is restricted, false otherwise.

moveDatabaseFrom

Added in API level 24 
public boolean moveDatabaseFrom (Context sourceContext, 
                String name)

Move an existing database file from the given source storage context to this context. This is typically used to migrate data between storage locations after an upgrade, such as migrating to device protected storage.

The database must be closed before being moved.

Parameters
sourceContext Context: The source context which contains the existing database to move.
name String: The name of the database file.
Returns
boolean true if the move was successful or if the database didn't exist in the source context, otherwise false.

moveSharedPreferencesFrom

Added in API level 24 
public boolean moveSharedPreferencesFrom (Context sourceContext, 
                String name)

Move an existing shared preferences file from the given source storage context to this context. This is typically used to migrate data between storage locations after an upgrade, such as moving to device protected storage.

Parameters
sourceContext Context: The source context which contains the existing shared preferences to move.
name String: The name of the shared preferences file.
Returns
boolean true if the move was successful or if the shared preferences didn't exist in the source context, otherwise false.

openFileInput

Added in API level 1 
public FileInputStream openFileInput (String name)

Open a private file associated with this Context's application package for reading.

Parameters
name String: The name of the file to open; can not contain path separators.
Returns
FileInputStream The resulting FileInputStream.
Throws
FileNotFoundException

openFileOutput

Added in API level 1 
public FileOutputStream openFileOutput (String name, 
                int mode)

Open a private file associated with this Context's application package for writing. Creates the file if it doesn't already exist.

No additional permissions are required for the calling app to read or write the returned file.

Parameters
name String: The name of the file to open; can not contain path separators.
mode int: Operating mode. Value is either 0 or a combination of Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, and Context.MODE_APPEND
Returns
FileOutputStream The resulting FileOutputStream.
Throws
FileNotFoundException

openOrCreateDatabase

Added in API level 11 
public SQLiteDatabase openOrCreateDatabase (String name, 
                int mode, 
                SQLiteDatabase.CursorFactory factory, 
                DatabaseErrorHandler errorHandler)

Open a new private SQLiteDatabase associated with this Context's application package. Creates the database file if it doesn't exist.

Accepts input param: a concrete instance of DatabaseErrorHandler to be used to handle corruption when sqlite reports database corruption.

Parameters
name String: The name (unique in the application package) of the database.
mode int: Operating mode. Value is either 0 or a combination of Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, Context.MODE_ENABLE_WRITE_AHEAD_LOGGING, and Context.MODE_NO_LOCALIZED_COLLATORS
factory SQLiteDatabase.CursorFactory: An optional factory class that is called to instantiate a cursor when query is called.
errorHandler DatabaseErrorHandler: This value may be null.
Returns
SQLiteDatabase The contents of a newly created database with the given name.

openOrCreateDatabase

Added in API level 1 
public SQLiteDatabase openOrCreateDatabase (String name, 
                int mode, 
                SQLiteDatabase.CursorFactory factory)

Open a new private SQLiteDatabase associated with this Context's application package. Create the database file if it doesn't exist.

Parameters
name String: The name (unique in the application package) of the database.
mode int: Operating mode. Value is either 0 or a combination of Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, Context.MODE_ENABLE_WRITE_AHEAD_LOGGING, and Context.MODE_NO_LOCALIZED_COLLATORS
factory SQLiteDatabase.CursorFactory: An optional factory class that is called to instantiate a cursor when query is called.
Returns
SQLiteDatabase The contents of a newly created database with the given name.

peekWallpaper

Added in API level 1 
public Drawable peekWallpaper ()

This method is deprecated.
Use WallpaperManager.peek() instead.

Returns
Drawable

registerComponentCallbacks

Added in API level 14 
public void registerComponentCallbacks (ComponentCallbacks callback)

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

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

Parameters
callback ComponentCallbacks: The interface to call. This can be either a ComponentCallbacks or ComponentCallbacks2 interface.
Throws
IllegalStateException if this method calls before attachBaseContext(android.content.Context)

registerDeviceIdChangeListener

Added in API level 34 
public void registerDeviceIdChangeListener (Executor executor, 
                IntConsumer listener)

Adds a new device ID changed listener to the Context, which will be called when the device association is changed by the system.

The callback can be called when an app is moved to a different device and the Context is not explicitly associated with a specific device.

When an application receives a device id update callback, this Context is guaranteed to also have an updated display ID(if any) and Configuration.

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

registerReceiver

Added in API level 1 
public Intent registerReceiver (BroadcastReceiver receiver, 
                IntentFilter filter)

Register a BroadcastReceiver to be run in the main activity thread. The receiver will be called with any broadcast Intent that matches filter, in the main application thread.

The system may broadcast Intents that are "sticky" -- these stay around after the broadcast has finished, to be sent to any later registrations. If your IntentFilter matches one of these sticky Intents, that Intent will be returned by this function and sent to your receiver as if it had just been broadcast.

There may be multiple sticky Intents that match filter, in which case each of these will be sent to receiver. In this case, only one of these can be returned directly by the function; which of these that is returned is arbitrarily decided by the system.

If you know the Intent your are registering for is sticky, you can supply null for your receiver. In this case, no receiver is registered -- the function simply returns the sticky Intent that matches filter. In the case of multiple matches, the same rules as described above apply.

See BroadcastReceiver for more information on Intent broadcasts.

As of Build.VERSION_CODES.UPSIDE_DOWN_CAKE, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast.

As of Build.VERSION_CODES.ICE_CREAM_SANDWICH, receivers registered with this method will correctly respect the Intent#setPackage(String) specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security.

For apps targeting Build.VERSION_CODES.UPSIDE_DOWN_CAKE, either RECEIVER_EXPORTED or RECEIVER_NOT_EXPORTED must be specified if the receiver is not being registered for system broadcasts or a SecurityException will be thrown. See registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter, int) to register a receiver with flags.

Note: this method cannot be called from a BroadcastReceiver component; that is, from a BroadcastReceiver that is declared in an application's manifest. It is okay, however, to call this method from another BroadcastReceiver that has itself been registered at run time with registerReceiver(BroadcastReceiver, IntentFilter), since the lifetime of such a registered BroadcastReceiver is tied to the object that registered it.

Parameters
receiver BroadcastReceiver: This value may be null.
filter IntentFilter: Selects the Intent broadcasts to be received.
Returns
Intent The first sticky intent found that matches filter, or null if there are none.

registerReceiver

Added in API level 26 
public Intent registerReceiver (BroadcastReceiver receiver, 
                IntentFilter filter, 
                int flags)

Register to receive intent broadcasts, with the receiver optionally being exposed to Instant Apps. See registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter) for more information. By default Instant Apps cannot interact with receivers in other applications, this allows you to expose a receiver that Instant Apps can interact with.

See BroadcastReceiver for more information on Intent broadcasts.

As of Build.VERSION_CODES.UPSIDE_DOWN_CAKE, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast.

As of Build.VERSION_CODES.ICE_CREAM_SANDWICH, receivers registered with this method will correctly respect the Intent#setPackage(String) specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security.

Parameters
receiver BroadcastReceiver: This value may be null.
filter IntentFilter: Selects the Intent broadcasts to be received.
flags int: Additional options for the receiver. For apps targeting Build.VERSION_CODES.UPSIDE_DOWN_CAKE either Context.RECEIVER_EXPORTED or Context.RECEIVER_NOT_EXPORTED must be specified if the receiver isn't being registered for system broadcasts or a SecurityException will be thrown. If Context.RECEIVER_EXPORTED is specified, a receiver may additionally specify Context.RECEIVER_VISIBLE_TO_INSTANT_APPS. For a complete list of system broadcast actions, see the BROADCAST_ACTIONS.TXT file in the Android SDK. If both Context.RECEIVER_EXPORTED and Context.RECEIVER_NOT_EXPORTED are specified, an IllegalArgumentException will be thrown. Value is either 0 or a combination of Context.RECEIVER_VISIBLE_TO_INSTANT_APPS, Context.RECEIVER_EXPORTED, Context.RECEIVER_NOT_EXPORTED, and android.content.Context.RECEIVER_EXPORTED_UNAUDITED
Returns
Intent The first sticky intent found that matches filter, or null if there are none.

registerReceiver

Added in API level 26 
public Intent registerReceiver (BroadcastReceiver receiver, 
                IntentFilter filter, 
                String broadcastPermission, 
                Handler scheduler, 
                int flags)

Register to receive intent broadcasts, to run in the context of scheduler. See registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter, int) and registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter, java.lang.String, android.os.Handler) for more information.

See BroadcastReceiver for more information on Intent broadcasts.

As of Build.VERSION_CODES.UPSIDE_DOWN_CAKE, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast.

As of Build.VERSION_CODES.ICE_CREAM_SANDWICH, receivers registered with this method will correctly respect the Intent#setPackage(String) specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security.

Parameters
receiver BroadcastReceiver: This value may be null.
filter IntentFilter: Selects the Intent broadcasts to be received.
broadcastPermission String: This value may be null.
scheduler Handler: This value may be null.
flags int: Additional options for the receiver. For apps targeting Build.VERSION_CODES.UPSIDE_DOWN_CAKE either Context.RECEIVER_EXPORTED or Context.RECEIVER_NOT_EXPORTED must be specified if the receiver isn't being registered for system broadcasts or a SecurityException will be thrown. If Context.RECEIVER_EXPORTED is specified, a receiver may additionally specify Context.RECEIVER_VISIBLE_TO_INSTANT_APPS. For a complete list of system broadcast actions, see the BROADCAST_ACTIONS.TXT file in the Android SDK. If both Context.RECEIVER_EXPORTED and Context.RECEIVER_NOT_EXPORTED are specified, an IllegalArgumentException will be thrown. Value is either 0 or a combination of Context.RECEIVER_VISIBLE_TO_INSTANT_APPS, Context.RECEIVER_EXPORTED, Context.RECEIVER_NOT_EXPORTED, and android.content.Context.RECEIVER_EXPORTED_UNAUDITED
Returns
Intent The first sticky intent found that matches filter, or null if there are none.

registerReceiver

Added in API level 1 
public Intent registerReceiver (BroadcastReceiver receiver, 
                IntentFilter filter, 
                String broadcastPermission, 
                Handler scheduler)

Register to receive intent broadcasts, to run in the context of scheduler. See registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter) for more information. This allows you to enforce permissions on who can broadcast intents to your receiver, or have the receiver run in a different thread than the main application thread.

See BroadcastReceiver for more information on Intent broadcasts.

As of Build.VERSION_CODES.UPSIDE_DOWN_CAKE, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast.

As of Build.VERSION_CODES.ICE_CREAM_SANDWICH, receivers registered with this method will correctly respect the Intent#setPackage(String) specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security.

For apps targeting Build.VERSION_CODES.UPSIDE_DOWN_CAKE, either RECEIVER_EXPORTED or RECEIVER_NOT_EXPORTED must be specified if the receiver is not being registered for system broadcasts or a SecurityException will be thrown. See registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter, java.lang.String, android.os.Handler, int) to register a receiver with flags.

Parameters
receiver BroadcastReceiver: This value may be null.
filter IntentFilter: Selects the Intent broadcasts to be received.
broadcastPermission String: This value may be null.
scheduler Handler: This value may be null.
Returns
Intent The first sticky intent found that matches filter, or null if there are none.

removeStickyBroadcast

Added in API level 1 
public void removeStickyBroadcast (Intent intent)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Remove the data previously sent with sendStickyBroadcast(Intent), so that it is as if the sticky broadcast had never happened.
Requires Manifest.permission.BROADCAST_STICKY

Parameters
intent Intent: The Intent that was previously broadcast.

removeStickyBroadcastAsUser

Added in API level 17 
public void removeStickyBroadcastAsUser (Intent intent, 
                UserHandle user)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Version of removeStickyBroadcast(android.content.Intent) that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image.

You must hold the Manifest.permission.BROADCAST_STICKY permission in order to use this API. If you do not hold that permission, SecurityException will be thrown.
Requires android.Manifest.permission.INTERACT_ACROSS_USERS and Manifest.permission.BROADCAST_STICKY

Parameters
intent Intent: The Intent that was previously broadcast.
user UserHandle: UserHandle to remove the sticky broadcast from.

revokeSelfPermissionsOnKill

Added in API level 33 
public void revokeSelfPermissionsOnKill (Collection<String> permissions)

Triggers the revocation of one or more permissions for the calling package. A package is only able to revoke runtime permissions. If a permission is not currently granted, it is ignored and will not get revoked (even if later granted by the user). Ultimately, you should never make assumptions about a permission status as users may grant or revoke them at any time.

Background permissions which have no corresponding foreground permission still granted once the revocation is effective will also be revoked.

The revocation happens asynchronously and kills all processes running in the calling UID. It will be triggered once it is safe to do so. In particular, it will not be triggered as long as the package remains in the foreground, or has any active manifest components (e.g. when another app is accessing a content provider in the package).

If you want to revoke the permissions right away, you could call System.exit() in Handler.postDelayed with a delay to allow completion of async IPC, But System.exit() could affect other apps that are accessing your app at the moment. For example, apps accessing a content provider in your app will all crash.

Note that the settings UI shows a permission group as granted as long as at least one permission in the group is granted. If you want the user to observe the revocation in the settings, you should revoke every permission in the target group. To learn the current list of permissions in a group, you may use PackageManager#getGroupOfPlatformPermission(String, Executor, Consumer) and PackageManager#getPlatformPermissionsForGroup(String, Executor, Consumer). This list of permissions may evolve over time, so it is recommended to check whether it contains any permission you wish to retain before trying to revoke an entire group.

Parameters
permissions Collection: This value cannot be null.

revokeUriPermission

Added in API level 1 
public 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. The given Uri will match all previously granted Uris that are the same or a sub-path of the given Uri. That is, revoking "content://foo/target" will revoke both "content://foo/target" and "content://foo/target/sub", but not "content://foo". It will not remove any prefix grants that exist at a higher level.

Prior to Build.VERSION_CODES.LOLLIPOP, if you did not have regular permission access to a Uri, but had received access to it through a specific Uri permission grant, you could not revoke that grant with this function and a SecurityException would be thrown. As of Build.VERSION_CODES.LOLLIPOP, this function will not throw a security exception, but will remove whatever permission grants to the Uri had been given to the app (or none).

Unlike revokeUriPermission(java.lang.String, android.net.Uri, int), this method impacts all permission grants matching the given Uri, for any package they had been granted to, through any mechanism this had happened (such as indirectly through the clipboard, activity launch, service start, etc). That means this can be potentially dangerous to use, as it can revoke grants that another app could be strongly expecting to stick around.

Parameters
uri Uri: The Uri you would like to revoke access to.
modeFlags int: The access modes to revoke. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION

revokeUriPermission

Added in API level 26 
public 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. The given Uri will match all previously granted Uris that are the same or a sub-path of the given Uri. That is, revoking "content://foo/target" will revoke both "content://foo/target" and "content://foo/target/sub", but not "content://foo". It will not remove any prefix grants that exist at a higher level.

Unlike revokeUriPermission(android.net.Uri, int), this method will only revoke permissions that had been explicitly granted through grantUriPermission(String, Uri, int) and only for the package specified. Any matching grants that have happened through other mechanisms (clipboard, activity launching, service starting, etc) will not be removed.

Parameters
targetPackage String: The package you had previously granted access to.
uri Uri: The Uri you would like to revoke access to.
modeFlags int: The access modes to revoke. Value is either 0 or a combination of Intent.FLAG_GRANT_READ_URI_PERMISSION, and Intent.FLAG_GRANT_WRITE_URI_PERMISSION

sendBroadcast

Added in API level 34 
public void sendBroadcast (Intent intent, 
                String receiverPermission, 
                Bundle options)

Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. No results are propagated from receivers and receivers can not abort the broadcast. If you want to allow receivers to propagate results or abort the broadcast, you must send an ordered broadcast using sendOrderedBroadcast(android.content.Intent, java.lang.String).

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: This value cannot be null.
receiverPermission String: This value may be null.
options Bundle: This value may be null.

sendBroadcast

Added in API level 1 
public void sendBroadcast (Intent intent, 
                String receiverPermission)

Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. No results are propagated from receivers and receivers can not abort the broadcast. If you want to allow receivers to propagate results or abort the broadcast, you must send an ordered broadcast using sendOrderedBroadcast(android.content.Intent, java.lang.String).

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.
receiverPermission String: This value may be null.

sendBroadcast

Added in API level 1 
public void sendBroadcast (Intent intent)

Broadcast the given intent to all interested BroadcastReceivers. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. No results are propagated from receivers and receivers can not abort the broadcast. If you want to allow receivers to propagate results or abort the broadcast, you must send an ordered broadcast using sendOrderedBroadcast(android.content.Intent, java.lang.String).

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.

sendBroadcastAsUser

Added in API level 17 
public void sendBroadcastAsUser (Intent intent, 
                UserHandle user)

Version of sendBroadcast(android.content.Intent) that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image.
Requires android.Manifest.permission.INTERACT_ACROSS_USERS

Parameters
intent Intent: The intent to broadcast
user UserHandle: UserHandle to send the intent to.

sendBroadcastAsUser

Added in API level 17 
public void sendBroadcastAsUser (Intent intent, 
                UserHandle user, 
                String receiverPermission)

Version of sendBroadcast(android.content.Intent, java.lang.String) that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image.
Requires android.Manifest.permission.INTERACT_ACROSS_USERS

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.
user UserHandle: UserHandle to send the intent to.
receiverPermission String: (optional) String naming a permission that a receiver must hold in order to receive your broadcast. If null, no permission is required.

sendOrderedBroadcast

Added in API level 30 
public void sendOrderedBroadcast (Intent intent, 
                String receiverPermission, 
                String receiverAppOp, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                int initialCode, 
                String initialData, 
                Bundle initialExtras)

Version of sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the App Op to enforce restrictions on which receivers the broadcast will be sent to.

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: This value cannot be null.
receiverPermission String: This value may be null.
receiverAppOp String: This value may be null.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialCode int: An initial value for the result code. Often Activity.RESULT_OK.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.

sendOrderedBroadcast

Added in API level 30 
public void sendOrderedBroadcast (Intent intent, 
                int initialCode, 
                String receiverPermission, 
                String receiverAppOp, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                String initialData, 
                Bundle initialExtras, 
                Bundle options)

Parameters
intent Intent: This value cannot be null.
initialCode int

receiverPermission String: This value may be null.
receiverAppOp String: This value may be null.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.
options Bundle: This value may be null.

sendOrderedBroadcast

Added in API level 1 
public void sendOrderedBroadcast (Intent intent, 
                String receiverPermission, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                int initialCode, 
                String initialData, 
                Bundle initialExtras)

Version of sendBroadcast(android.content.Intent) that allows you to receive data back from the broadcast. This is accomplished by supplying your own BroadcastReceiver when calling, which will be treated as a final receiver at the end of the broadcast -- its BroadcastReceiver#onReceive method will be called with the result values collected from the other receivers. The broadcast will be serialized in the same way as calling sendOrderedBroadcast(android.content.Intent, java.lang.String).

Like sendBroadcast(android.content.Intent), this method is asynchronous; it will return before resultReceiver.onReceive() is called.

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast. This value cannot be null.
receiverPermission String: This value may be null.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialCode int: An initial value for the result code. Often Activity.RESULT_OK.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.

sendOrderedBroadcast

Added in API level 34 
public void sendOrderedBroadcast (Intent intent, 
                String receiverPermission, 
                Bundle options)

Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run.

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: This value cannot be null.
receiverPermission String: This value may be null.
options Bundle: This value may be null.

sendOrderedBroadcast

Added in API level 34 
public void sendOrderedBroadcast (Intent intent, 
                String receiverPermission, 
                Bundle options, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                int initialCode, 
                String initialData, 
                Bundle initialExtras)

Version of sendBroadcast(android.content.Intent) that allows you to receive data back from the broadcast. This is accomplished by supplying your own BroadcastReceiver when calling, which will be treated as a final receiver at the end of the broadcast -- its BroadcastReceiver#onReceive method will be called with the result values collected from the other receivers. The broadcast will be serialized in the same way as calling sendOrderedBroadcast(android.content.Intent, java.lang.String).

Like sendBroadcast(android.content.Intent), this method is asynchronous; it will return before resultReceiver.onReceive() is called.

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: This value cannot be null.
receiverPermission String: This value may be null.
options Bundle: This value may be null.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialCode int: An initial value for the result code. Often Activity.RESULT_OK.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.

sendOrderedBroadcast

Added in API level 1 
public 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. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run.

See BroadcastReceiver for more information on Intent broadcasts.

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.
receiverPermission String: This value may be null.

sendOrderedBroadcastAsUser

Added in API level 17 
public void sendOrderedBroadcastAsUser (Intent intent, 
                UserHandle user, 
                String receiverPermission, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                int initialCode, 
                String initialData, 
                Bundle initialExtras)

Version of sendOrderedBroadcast(android.content.Intent, java.lang.String, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image.

See BroadcastReceiver for more information on Intent broadcasts.
Requires android.Manifest.permission.INTERACT_ACROSS_USERS

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.
user UserHandle: UserHandle to send the intent to.
receiverPermission String: This value may be null.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialCode int: An initial value for the result code. Often Activity.RESULT_OK.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.

sendStickyBroadcast

Added in API level 1 
public void sendStickyBroadcast (Intent intent)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Perform a sendBroadcast(android.content.Intent) that is "sticky," meaning the Intent you are sending stays around after the broadcast is complete, so that others can quickly retrieve that data through the return value of registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter). In all other ways, this behaves the same as sendBroadcast(android.content.Intent).
Requires Manifest.permission.BROADCAST_STICKY

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast, and the Intent will be held to be re-broadcast to future receivers.

sendStickyBroadcast

Added in API level 31 
public void sendStickyBroadcast (Intent intent, 
                Bundle options)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Perform a sendBroadcast(android.content.Intent) that is "sticky," meaning the Intent you are sending stays around after the broadcast is complete, so that others can quickly retrieve that data through the return value of registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter). In all other ways, this behaves the same as sendBroadcast(android.content.Intent).

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast, and the Intent will be held to be re-broadcast to future receivers. This value cannot be null.
options Bundle: (optional) Additional sending options, generated from a BroadcastOptions. This value may be null.

sendStickyBroadcastAsUser

Added in API level 17 
public void sendStickyBroadcastAsUser (Intent intent, 
                UserHandle user)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Version of sendStickyBroadcast(android.content.Intent) that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image.
Requires android.Manifest.permission.INTERACT_ACROSS_USERS and Manifest.permission.BROADCAST_STICKY

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast, and the Intent will be held to be re-broadcast to future receivers.
user UserHandle: UserHandle to send the intent to.

sendStickyOrderedBroadcast

Added in API level 5 
public void sendStickyOrderedBroadcast (Intent intent, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                int initialCode, 
                String initialData, 
                Bundle initialExtras)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Version of sendStickyBroadcast(Intent) that allows you to receive data back from the broadcast. This is accomplished by supplying your own BroadcastReceiver when calling, which will be treated as a final receiver at the end of the broadcast -- its BroadcastReceiver#onReceive method will be called with the result values collected from the other receivers. The broadcast will be serialized in the same way as calling sendOrderedBroadcast(android.content.Intent, java.lang.String).

Like sendBroadcast(android.content.Intent), this method is asynchronous; it will return before resultReceiver.onReceive() is called. Note that the sticky data stored is only the data you initially supply to the broadcast, not the result of any changes made by the receivers.

See BroadcastReceiver for more information on Intent broadcasts.
Requires Manifest.permission.BROADCAST_STICKY

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialCode int: An initial value for the result code. Often Activity.RESULT_OK.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.

sendStickyOrderedBroadcastAsUser

Added in API level 17 
public void sendStickyOrderedBroadcastAsUser (Intent intent, 
                UserHandle user, 
                BroadcastReceiver resultReceiver, 
                Handler scheduler, 
                int initialCode, 
                String initialData, 
                Bundle initialExtras)

This method is deprecated.
Sticky broadcasts should not be used. They provide no security (anyone can access them), no protection (anyone can modify them), and many other problems. The recommended pattern is to use a non-sticky broadcast to report that something has changed, with another mechanism for apps to retrieve the current value whenever desired.

Version of sendStickyOrderedBroadcast(android.content.Intent, android.content.BroadcastReceiver, android.os.Handler, int, java.lang.String, android.os.Bundle) that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image.

See BroadcastReceiver for more information on Intent broadcasts.
Requires android.Manifest.permission.INTERACT_ACROSS_USERS and Manifest.permission.BROADCAST_STICKY

Parameters
intent Intent: The Intent to broadcast; all receivers matching this Intent will receive the broadcast.
user UserHandle: UserHandle to send the intent to.
resultReceiver BroadcastReceiver: This value may be null.
scheduler Handler: This value may be null.
initialCode int: An initial value for the result code. Often Activity.RESULT_OK.
initialData String: This value may be null.
initialExtras Bundle: This value may be null.

setTheme

Added in API level 1 
public void setTheme (int resid)

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

Parameters
resid int: The style resource describing the theme.

setWallpaper

Added in API level 1 
public void setWallpaper (Bitmap bitmap)

This method is deprecated.
Use WallpaperManager.set() instead.

This method requires the caller to hold the permission Manifest.permission.SET_WALLPAPER.

Parameters
bitmap Bitmap

Throws
IOException

setWallpaper

Added in API level 1 
public void setWallpaper (InputStream data)

This method is deprecated.
Use WallpaperManager.set() instead.

This method requires the caller to hold the permission Manifest.permission.SET_WALLPAPER.

Parameters
data InputStream

Throws
IOException

startActivities

Added in API level 16 
public void startActivities (Intent[] intents, 
                Bundle options)

Launch multiple new activities. This is generally the same as calling startActivity(android.content.Intent) for the first Intent in the array, that activity during its creation calling startActivity(android.content.Intent) for the second entry, etc. Note that unlike that approach, generally none of the activities except the last in the array will be created at this point, but rather will be created when the user first visits them (due to pressing back from the activity on top).

This method throws ActivityNotFoundException if there was no Activity found for any given Intent. In this case the state of the activity stack is undefined (some Intents in the list may be on it, some not), so you probably want to avoid such situations.

Parameters
intents Intent: An array of Intents to be started.
options Bundle: This value may be null.

startActivities

Added in API level 11 
public void startActivities (Intent[] intents)

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

Parameters
intents Intent: An array of Intents to be started.

startActivity

Added in API level 1 
public void startActivity (Intent intent)

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

Parameters
intent Intent: The description of the activity to start.

startActivity

Added in API level 16 
public void startActivity (Intent intent, 
                Bundle options)

Launch a new activity. You will not receive any information about when the activity exits.

Note that if this method is being called from outside of an Activity Context, then the Intent must include the Intent#FLAG_ACTIVITY_NEW_TASK launch flag. This is because, without being started from an existing Activity, there is no existing task in which to place the new activity and thus it needs to be placed in its own separate task.

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

Parameters
intent Intent: The description of the activity to start.
options Bundle: This value may be null.

startForegroundService

Added in API level 26 
public ComponentName startForegroundService (Intent service)

Similar to startService(android.content.Intent), but with an implicit promise that the Service will call startForeground(int, android.app.Notification) once it begins running. The service is given an amount of time comparable to the ANR interval to do this, otherwise the system will automatically crash the process, in which case an internal exception ForegroundServiceDidNotStartInTimeException is logged on logcat on devices running SDK Version Build.VERSION_CODES.S or later. On older Android versions, an internal exception RemoteServiceException is logged instead, with a corresponding message.

Unlike the ordinary startService(android.content.Intent), this method can be used at any time, regardless of whether the app hosting the service is in a foreground state.

Note: Beginning with SDK Version Build.VERSION_CODES.S, apps targeting SDK Version Build.VERSION_CODES.S or higher are not allowed to start foreground services from the background. See Behavior changes: Apps targeting Android 12 for more details.

Parameters
service Intent: Identifies the service to be started. The Intent must be fully explicit (supplying a component name). Additional values may be included in the Intent extras to supply arguments along with this specific start call.
Returns
ComponentName This value may be null.

startInstrumentation

Added in API level 1 
public boolean startInstrumentation (ComponentName className, 
                String profileFile, 
                Bundle arguments)

Start executing an Instrumentation class. The given Instrumentation component will be run by killing its target application (if currently running), starting the target process, instantiating the instrumentation component, and then letting it drive the application.

This function is not synchronous -- it returns as soon as the instrumentation has started and while it is running.

Instrumentation is normally only allowed to run against a package that is either unsigned or signed with a signature that the the instrumentation package is also signed with (ensuring the target trusts the instrumentation).

Parameters
className ComponentName: Name of the Instrumentation component to be run. This value cannot be null.
profileFile String: This value may be null.
arguments Bundle: This value may be null.
Returns
boolean true if the instrumentation was successfully started, else false if it could not be found.

startIntentSender

Added in API level 5 
public void startIntentSender (IntentSender intent, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags)

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

Parameters
intent IntentSender: The IntentSender to launch.
fillInIntent Intent: This value may be null.
flagsMask int: Intent flags in the original IntentSender that you would like to change. Value is either 0 or a combination of Intent.FLAG_FROM_BACKGROUND, Intent.FLAG_DEBUG_LOG_RESOLUTION, Intent.FLAG_EXCLUDE_STOPPED_PACKAGES, Intent.FLAG_INCLUDE_STOPPED_PACKAGES, android.content.Intent.FLAG_DEBUG_TRIAGED_MISSING, android.content.Intent.FLAG_IGNORE_EPHEMERAL, Intent.FLAG_ACTIVITY_MATCH_EXTERNAL, Intent.FLAG_ACTIVITY_NO_HISTORY, Intent.FLAG_ACTIVITY_SINGLE_TOP, Intent.FLAG_ACTIVITY_NEW_TASK, Intent.FLAG_ACTIVITY_MULTIPLE_TASK, Intent.FLAG_ACTIVITY_CLEAR_TOP, Intent.FLAG_ACTIVITY_FORWARD_RESULT, Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP, Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS, Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT, Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED, Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NEW_DOCUMENT, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NO_USER_ACTION, Intent.FLAG_ACTIVITY_REORDER_TO_FRONT, Intent.FLAG_ACTIVITY_NO_ANIMATION, Intent.FLAG_ACTIVITY_CLEAR_TASK, Intent.FLAG_ACTIVITY_TASK_ON_HOME, Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS, Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT, Intent.FLAG_RECEIVER_REGISTERED_ONLY, Intent.FLAG_RECEIVER_REPLACE_PENDING, Intent.FLAG_RECEIVER_FOREGROUND, Intent.FLAG_RECEIVER_NO_ABORT, android.content.Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT, android.content.Intent.FLAG_RECEIVER_BOOT_UPGRADE, android.content.Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_EXCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_FROM_SHELL, Intent.FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS, android.content.Intent.FLAG_RECEIVER_OFFLOAD, and android.content.Intent.FLAG_RECEIVER_OFFLOAD_FOREGROUND
flagsValues int: Desired values for any bits set in flagsMask Value is either 0 or a combination of Intent.FLAG_FROM_BACKGROUND, Intent.FLAG_DEBUG_LOG_RESOLUTION, Intent.FLAG_EXCLUDE_STOPPED_PACKAGES, Intent.FLAG_INCLUDE_STOPPED_PACKAGES, android.content.Intent.FLAG_DEBUG_TRIAGED_MISSING, android.content.Intent.FLAG_IGNORE_EPHEMERAL, Intent.FLAG_ACTIVITY_MATCH_EXTERNAL, Intent.FLAG_ACTIVITY_NO_HISTORY, Intent.FLAG_ACTIVITY_SINGLE_TOP, Intent.FLAG_ACTIVITY_NEW_TASK, Intent.FLAG_ACTIVITY_MULTIPLE_TASK, Intent.FLAG_ACTIVITY_CLEAR_TOP, Intent.FLAG_ACTIVITY_FORWARD_RESULT, Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP, Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS, Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT, Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED, Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NEW_DOCUMENT, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NO_USER_ACTION, Intent.FLAG_ACTIVITY_REORDER_TO_FRONT, Intent.FLAG_ACTIVITY_NO_ANIMATION, Intent.FLAG_ACTIVITY_CLEAR_TASK, Intent.FLAG_ACTIVITY_TASK_ON_HOME, Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS, Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT, Intent.FLAG_RECEIVER_REGISTERED_ONLY, Intent.FLAG_RECEIVER_REPLACE_PENDING, Intent.FLAG_RECEIVER_FOREGROUND, Intent.FLAG_RECEIVER_NO_ABORT, android.content.Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT, android.content.Intent.FLAG_RECEIVER_BOOT_UPGRADE, android.content.Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_EXCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_FROM_SHELL, Intent.FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS, android.content.Intent.FLAG_RECEIVER_OFFLOAD, and android.content.Intent.FLAG_RECEIVER_OFFLOAD_FOREGROUND
extraFlags int: Always set to 0.
Throws
IntentSender.SendIntentException

startIntentSender

Added in API level 16 
public void startIntentSender (IntentSender intent, 
                Intent fillInIntent, 
                int flagsMask, 
                int flagsValues, 
                int extraFlags, 
                Bundle options)

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

Parameters
intent IntentSender: The IntentSender to launch.
fillInIntent Intent: This value may be null.
flagsMask int: Intent flags in the original IntentSender that you would like to change. Value is either 0 or a combination of Intent.FLAG_FROM_BACKGROUND, Intent.FLAG_DEBUG_LOG_RESOLUTION, Intent.FLAG_EXCLUDE_STOPPED_PACKAGES, Intent.FLAG_INCLUDE_STOPPED_PACKAGES, android.content.Intent.FLAG_DEBUG_TRIAGED_MISSING, android.content.Intent.FLAG_IGNORE_EPHEMERAL, Intent.FLAG_ACTIVITY_MATCH_EXTERNAL, Intent.FLAG_ACTIVITY_NO_HISTORY, Intent.FLAG_ACTIVITY_SINGLE_TOP, Intent.FLAG_ACTIVITY_NEW_TASK, Intent.FLAG_ACTIVITY_MULTIPLE_TASK, Intent.FLAG_ACTIVITY_CLEAR_TOP, Intent.FLAG_ACTIVITY_FORWARD_RESULT, Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP, Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS, Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT, Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED, Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NEW_DOCUMENT, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NO_USER_ACTION, Intent.FLAG_ACTIVITY_REORDER_TO_FRONT, Intent.FLAG_ACTIVITY_NO_ANIMATION, Intent.FLAG_ACTIVITY_CLEAR_TASK, Intent.FLAG_ACTIVITY_TASK_ON_HOME, Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS, Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT, Intent.FLAG_RECEIVER_REGISTERED_ONLY, Intent.FLAG_RECEIVER_REPLACE_PENDING, Intent.FLAG_RECEIVER_FOREGROUND, Intent.FLAG_RECEIVER_NO_ABORT, android.content.Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT, android.content.Intent.FLAG_RECEIVER_BOOT_UPGRADE, android.content.Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_EXCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_FROM_SHELL, Intent.FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS, android.content.Intent.FLAG_RECEIVER_OFFLOAD, and android.content.Intent.FLAG_RECEIVER_OFFLOAD_FOREGROUND
flagsValues int: Desired values for any bits set in flagsMask Value is either 0 or a combination of Intent.FLAG_FROM_BACKGROUND, Intent.FLAG_DEBUG_LOG_RESOLUTION, Intent.FLAG_EXCLUDE_STOPPED_PACKAGES, Intent.FLAG_INCLUDE_STOPPED_PACKAGES, android.content.Intent.FLAG_DEBUG_TRIAGED_MISSING, android.content.Intent.FLAG_IGNORE_EPHEMERAL, Intent.FLAG_ACTIVITY_MATCH_EXTERNAL, Intent.FLAG_ACTIVITY_NO_HISTORY, Intent.FLAG_ACTIVITY_SINGLE_TOP, Intent.FLAG_ACTIVITY_NEW_TASK, Intent.FLAG_ACTIVITY_MULTIPLE_TASK, Intent.FLAG_ACTIVITY_CLEAR_TOP, Intent.FLAG_ACTIVITY_FORWARD_RESULT, Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP, Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS, Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT, Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED, Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NEW_DOCUMENT, Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, Intent.FLAG_ACTIVITY_NO_USER_ACTION, Intent.FLAG_ACTIVITY_REORDER_TO_FRONT, Intent.FLAG_ACTIVITY_NO_ANIMATION, Intent.FLAG_ACTIVITY_CLEAR_TASK, Intent.FLAG_ACTIVITY_TASK_ON_HOME, Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS, Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT, Intent.FLAG_RECEIVER_REGISTERED_ONLY, Intent.FLAG_RECEIVER_REPLACE_PENDING, Intent.FLAG_RECEIVER_FOREGROUND, Intent.FLAG_RECEIVER_NO_ABORT, android.content.Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT, android.content.Intent.FLAG_RECEIVER_BOOT_UPGRADE, android.content.Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_EXCLUDE_BACKGROUND, android.content.Intent.FLAG_RECEIVER_FROM_SHELL, Intent.FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS, android.content.Intent.FLAG_RECEIVER_OFFLOAD, and android.content.Intent.FLAG_RECEIVER_OFFLOAD_FOREGROUND
extraFlags int: Always set to 0.
options Bundle: This value may be null.
Throws
IntentSender.SendIntentException

startService

Added in API level 1 
public ComponentName startService (Intent service)

Request that a given application service be started. The Intent should either contain the complete class name of a specific service implementation to start, or a specific package name to target. If the Intent is less specified, it logs a warning about this. In this case any of the multiple matching services may be used. If this service is not already running, it will be instantiated and started (creating a process for it if needed); if it is running then it remains running.

Every call to this method will result in a corresponding call to the target service's Service.onStartCommand(Intent, int, int) method, with the intent given here. This provides a convenient way to submit jobs to a service without having to bind and call on to its interface.

Using startService() overrides the default service lifetime that is managed by bindService(Intent, BindServiceFlags, Executor, ServiceConnection): it requires the service to remain running until stopService(Intent) is called, regardless of whether any clients are connected to it. Note that calls to startService() do not nest: no matter how many times you call startService(), a single call to stopService(Intent) will stop it.

The system attempts to keep running services around as much as possible. The only time they should be stopped is if the current foreground application is using so many resources that the service needs to be killed. If any errors happen in the service's process, it will automatically be restarted.

This function will throw SecurityException if you do not have permission to start the given service.

Note: Each call to startService() results in significant work done by the system to manage service lifecycle surrounding the processing of the intent, which can take multiple milliseconds of CPU time. Due to this cost, startService() should not be used for frequent intent delivery to a service, and only for scheduling significant work. Use bound services for high frequency calls.

Beginning with SDK Version Build.VERSION_CODES.O, apps targeting SDK Version Build.VERSION_CODES.O or higher are not allowed to start background services from the background. See Background Execution Limits for more details.

Note: Beginning with SDK Version Build.VERSION_CODES.S, apps targeting SDK Version Build.VERSION_CODES.S or higher are not allowed to start foreground services from the background. See Behavior changes: Apps targeting Android 12 for more details.

Parameters
service Intent: Identifies the service to be started. The Intent must be fully explicit (supplying a component name). Additional values may be included in the Intent extras to supply arguments along with this specific start call.
Returns
ComponentName This value may be null.

stopService

Added in API level 1 
public boolean stopService (Intent name)

Request that a given application service be stopped. If the service is not running, nothing happens. Otherwise it is stopped. Note that calls to startService() are not counted -- this stops the service no matter how many times it was started.

If the service is running as a foreground service when it is stopped, its associated notification will be removed. To avoid this, apps can use stopForeground(STOP_FOREGROUND_DETACH) to decouple the notification from the service's lifecycle before stopping it.

Note that if a stopped service still has ServiceConnection objects bound to it with the BIND_AUTO_CREATE set, it will not be destroyed until all of these bindings are removed. See the Service documentation for more details on a service's lifecycle.

This function will throw SecurityException if you do not have permission to stop the given service.

Parameters
name Intent: Description of the service to be stopped. The Intent must be either fully explicit (supplying a component name) or specify a specific package name it is targeted to.
Returns
boolean If there is a service matching the given Intent that is already running, then it is stopped and true is returned; else false is returned.

unbindService

Added in API level 1 
public void unbindService (ServiceConnection conn)

Disconnect from an application service. You will no longer receive calls as the service is restarted, and the service is now allowed to stop at any time.

Parameters
conn ServiceConnection: The connection interface previously supplied to bindService(). This parameter must not be null.

unregisterComponentCallbacks

Added in API level 14 
public void unregisterComponentCallbacks (ComponentCallbacks callback)

Remove a ComponentCallbacks object that was previously registered with registerComponentCallbacks(android.content.ComponentCallbacks).

After Build.VERSION_CODES#TIRAMISU, the ComponentCallbacks will be unregistered to the base Context, and can be only used after attachBaseContext(android.content.Context)

Parameters
callback ComponentCallbacks: The interface to call. This can be either a ComponentCallbacks or ComponentCallbacks2 interface.
Throws
IllegalStateException if this method calls before attachBaseContext(android.content.Context)

unregisterDeviceIdChangeListener

Added in API level 34 
public void unregisterDeviceIdChangeListener (IntConsumer listener)

Removes a device ID changed listener from the Context. It's a no-op if the listener is not already registered.

Parameters
listener IntConsumer: This value cannot be null.

unregisterReceiver

Added in API level 1 
public void unregisterReceiver (BroadcastReceiver receiver)

Unregister a previously registered BroadcastReceiver. All filters that have been registered for this BroadcastReceiver will be removed.

Parameters
receiver BroadcastReceiver: The BroadcastReceiver to unregister.

updateServiceGroup

Added in API level 29 
public void updateServiceGroup (ServiceConnection conn, 
                int group, 
                int importance)

For a service previously bound with bindService(Intent, BindServiceFlags, Executor, ServiceConnection) or a related method, change how the system manages that service's process in relation to other processes. This doesn't modify the original bind flags that were passed in when binding, but adjusts how the process will be managed in some cases based on those flags. Currently only works on isolated processes (will be ignored for non-isolated processes).

Note that this call does not take immediate effect, but will be applied the next time the impacted process is adjusted for some other reason. Typically you would call this before then calling a new bindIsolatedService(Intent, BindServiceFlags, String, Executor, ServiceConnection) on the service of interest, with that binding causing the process to be shuffled accordingly.

Parameters
conn ServiceConnection: The connection interface previously supplied to bindService(). This parameter must not be null.
group int: A group to put this connection's process in. Upon calling here, this will override any previous group that was set for that process. The group tells the system about processes that are logically grouped together, so should be managed as one unit of importance (such as when being considered a recently used app). All processes in the same app with the same group are considered to be related. Supplying 0 reverts to the default behavior of not grouping.
importance int: Additional importance of the processes within a group. Upon calling here, this will override any previous importance that was set for that process. The most important process is 0, and higher values are successively less important. You can view this as describing how to order the processes in an array, with the processes at the end of the array being the least important. This value has no meaning besides indicating how processes should be ordered in that array one after the other. This provides a way to fine-tune the system's process killing, guiding it to kill processes at the end of the array first.

Protected methods

attachBaseContext

Added in API level 1 
protected void attachBaseContext (Context base)

Set the base context for this ContextWrapper. All calls will then be delegated to the base context. Throws IllegalStateException if a base context has already been set.

Parameters
base Context: The new base context for this wrapper.