android.content
Class ContextWrapper

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

Direct Known Subclasses:

Application, ContextThemeWrapper, IsolatedContext, MutableContextWrapper, ReceiverRestrictedContext, RenamingDelegatingContext, Service

public class ContextWrapper
extends Context

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.

Field Summary

(package private) Context

mBase

Fields inherited from class android.content.Context

ACTIVITY_SERVICE, ALARM_SERVICE, AUDIO_SERVICE, BIND_AUTO_CREATE, BIND_DEBUG_UNBIND, BLUETOOTH_SERVICE, CLIPBOARD_SERVICE, CONNECTIVITY_SERVICE, CONTEXT_IGNORE_SECURITY, CONTEXT_INCLUDE_CODE, KEYGUARD_SERVICE, LAYOUT_INFLATER_SERVICE, LOCATION_SERVICE, MODE_APPEND, MODE_PRIVATE, MODE_WORLD_READABLE, MODE_WORLD_WRITEABLE, NOTIFICATION_SERVICE, POWER_SERVICE, SEARCH_SERVICE, SENSOR_SERVICE, STATUS_BAR_SERVICE, TELEPHONY_SERVICE, VIBRATOR_SERVICE, WALLPAPER_SERVICE, WIFI_SERVICE, WINDOW_SERVICE

Constructor Summary

ContextWrapper(Context base)

Method Summary

protected void	attachBaseContext(Context base) Set the base context for this ContextWrapper.
boolean	bindService(Intent service, ServiceConnection conn, int flags) Connect to an application service, creating it if needed.
int	checkCallingOrSelfPermission(String permission) Determine whether the calling process of an IPC or you have been granted a particular permission.
int	checkCallingOrSelfUriPermission(Uri uri, int modeFlags) Determine whether the calling process of an IPC or you has been granted permission to access a specific URI.
int	checkCallingPermission(String permission) Determine whether the calling process of an IPC you are handling has been granted a particular permission.
int	checkCallingUriPermission(Uri uri, int modeFlags) Determine whether the calling process and user ID has been granted permission to access a specific URI.
int	checkPermission(String permission, int pid, int uid) Determine whether the given permission is allowed for a particular process and user ID running in the system.
int	checkUriPermission(Uri uri, int pid, int uid, int modeFlags) Determine whether a particular process and user ID has been granted permission to access a specific URI.
int	checkUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags) Check both a Uri and normal permission.
void	clearWallpaper() Remove any currently set wallpaper, reverting to the system's default wallpaper.
Context	createPackageContext(String packageName, int flags) Return a new Context object for the given application name.
String[]	databaseList() Returns an array of strings naming the private databases associated with this Context's application package.
boolean	deleteDatabase(String name) Delete an existing private SQLiteDatabase associated with this Context's application package.
boolean	deleteFile(String name) Delete the given private file associated with this Context's application package.
void	enforceCallingOrSelfPermission(String permission, String message) If neither you nor the calling process of an IPC you are handling has been granted a particular permission, throw a SecurityException.
void	enforceCallingOrSelfUriPermission(Uri uri, int modeFlags, String message) If the calling process of an IPC or you has not been granted permission to access a specific URI, throw SecurityException.
void	enforceCallingPermission(String permission, String message) If the calling process of an IPC you are handling has not been granted a particular permission, throw a SecurityException.
void	enforceCallingUriPermission(Uri uri, int modeFlags, String message) If the calling process and user ID has not been granted permission to access a specific URI, throw SecurityException.
void	enforcePermission(String permission, int pid, int uid, String message) If the given permission is not allowed for a particular process and user ID running in the system, throw a SecurityException.
void	enforceUriPermission(Uri uri, int pid, int uid, int modeFlags, String message) If a particular process and user ID has not been granted permission to access a specific URI, throw SecurityException.
void	enforceUriPermission(Uri uri, String readPermission, String writePermission, int pid, int uid, int modeFlags, String message) Enforce both a Uri and normal permission.
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.
AssetManager	getAssets() Return an AssetManager instance for your application's package.
Context	getBaseContext()
File	getCacheDir() Returns the absolute path to the application specific cache directory on the filesystem.
ClassLoader	getClassLoader() Return a class loader you can use to retrieve classes in this package.
ContentResolver	getContentResolver() Return a ContentResolver instance for your application's package.
File	getDatabasePath(String name) Returns the absolute path on the filesystem where a database created with Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase.CursorFactory) is stored.
File	getDir(String name, int mode) Retrieve, creating if needed, a new directory in which the application can place its own custom data files.
File	getFilesDir() Returns the absolute path to the directory on the filesystem where files created with Context.openFileOutput(java.lang.String, int) are stored.
File	getFileStreamPath(String name) Returns the absolute path on the filesystem where a file created with Context.openFileOutput(java.lang.String, int) is stored.
Looper	getMainLooper() Return the Looper for the main thread of the current process.
String	getPackageCodePath() Return the full path to this context's code and asset files.
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 resource files.
Resources	getResources() Return a Resources instance for your 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.
Resources.Theme	getTheme() Return the Theme object associated with this Context.
Drawable	getWallpaper() Like Context.peekWallpaper(), but always returns a valid Drawable.
int	getWallpaperDesiredMinimumHeight() Returns the desired minimum height for the wallpaper.
int	getWallpaperDesiredMinimumWidth() Returns the desired minimum width for the wallpaper.
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.
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) Open a new private SQLiteDatabase associated with this Context's application package.
Drawable	peekWallpaper() Retrieve the current system wallpaper.
Intent	registerReceiver(BroadcastReceiver receiver, IntentFilter filter) Register an BroadcastReceiver to be run in the main activity thread.
Intent	registerReceiver(BroadcastReceiver receiver, IntentFilter filter, String broadcastPermission, Handler scheduler) Register to receive intent broadcasts, to run in the context of scheduler.
void	removeStickyBroadcast(Intent intent) Remove the data previously sent with Context.sendStickyBroadcast(android.content.Intent), so that it is as if the sticky broadcast had never happened.
void	revokeUriPermission(Uri uri, int modeFlags) Remove all permissions to access a particular content provider Uri that were previously added with Context.grantUriPermission(java.lang.String, android.net.Uri, int).
void	sendBroadcast(Intent intent) Broadcast the given intent to all interested BroadcastReceivers.
void	sendBroadcast(Intent intent, String receiverPermission) Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced.
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	sendOrderedBroadcast(Intent intent, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras) Version of Context.sendBroadcast(Intent) that allows you to receive data back from the broadcast.
void	sendStickyBroadcast(Intent intent) Perform a Context.sendBroadcast(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 Context.registerReceiver(BroadcastReceiver, IntentFilter).
void	setTheme(int resid) Set the base theme for this context.
void	setWallpaper(Bitmap bitmap) Change the current system wallpaper to a bitmap.
void	setWallpaper(InputStream data) Change the current system wallpaper to a specific byte stream.
void	startActivity(Intent intent) Launch a new activity.
boolean	startInstrumentation(ComponentName className, String profileFile, Bundle arguments) Start executing an Instrumentation class.
ComponentName	startService(Intent service) Request that a given application service be started.
boolean	stopService(Intent name) Request that a given application service be stopped.
void	unbindService(ServiceConnection conn) Disconnect from an application service.
void	unregisterReceiver(BroadcastReceiver receiver) Unregister a previously registered BroadcastReceiver.

Methods inherited from class android.content.Context

getString, getString, getText, obtainStyledAttributes, obtainStyledAttributes, obtainStyledAttributes, obtainStyledAttributes

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mBase

Context mBase

Constructor Detail

ContextWrapper

public ContextWrapper(Context base)

Method Detail

attachBaseContext

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 - The new base context for this wrapper.

getBaseContext

public Context getBaseContext()

Returns:

the base context as set by the constructor or setBaseContext

getAssets

public AssetManager getAssets()

Description copied from class: Context

Return an AssetManager instance for your application's package.

Specified by:

getAssets in class Context

getResources

public Resources getResources()

Description copied from class: Context

Return a Resources instance for your application's package.

Specified by:

getResources in class Context

getPackageManager

public PackageManager getPackageManager()

Description copied from class: Context

Return PackageManager instance to find global package information.

Specified by:

getPackageManager in class Context

getContentResolver

public ContentResolver getContentResolver()

Description copied from class: Context

Return a ContentResolver instance for your application's package.

Specified by:

getContentResolver in class Context

getMainLooper

public Looper getMainLooper()

Description copied from class: Context

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).

Specified by:

getMainLooper in class Context

getApplicationContext

public Context getApplicationContext()

Description copied from class: Context

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

Specified by:

getApplicationContext in class Context

setTheme

public void setTheme(int resid)

Description copied from class: Context

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(int) or LayoutInflater.inflate(int, android.view.ViewGroup)).

Specified by:

setTheme in class Context

Parameters:

resid - The style resource describing the theme.

getTheme

public Resources.Theme getTheme()

Description copied from class: Context

Return the Theme object associated with this Context.

Specified by:

getTheme in class Context

getClassLoader

public ClassLoader getClassLoader()

Description copied from class: Context

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

Specified by:

getClassLoader in class Context

getPackageName

public String getPackageName()

Description copied from class: Context

Return the name of this application's package.

Specified by:

getPackageName in class Context

getPackageResourcePath

public String getPackageResourcePath()

Description copied from class: Context

Return the full path to this context's resource files. This is the ZIP files containing the application's resources.

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

Specified by:

getPackageResourcePath in class Context

Returns:

String Path to the resources.

getPackageCodePath

public String getPackageCodePath()

Description copied from class: Context

Return the full path to this context's code and asset files. This is the ZIP files containing the application's code and assets.

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

Specified by:

getPackageCodePath in class Context

Returns:

String Path to the code and assets.

getSharedPreferences

public SharedPreferences getSharedPreferences(String name,
                                              int mode)

Description copied from class: Context

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.

Specified by:

getSharedPreferences in class Context

Parameters:

name - Desired preferences file. 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 (Editor.commit()).

mode - Operating mode. Use 0 or Context.MODE_PRIVATE for the default operation, Context.MODE_WORLD_READABLE and Context.MODE_WORLD_WRITEABLE to control permissions.

Returns:

Returns the single SharedPreferences instance that can be used to retrieve and modify the preference values.

See Also:

Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE

openFileInput

public FileInputStream openFileInput(String name)
                              throws FileNotFoundException

Description copied from class: Context

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

Specified by:

openFileInput in class Context

Parameters:

name - The name of the file to open; can not contain path separators.

Returns:

FileInputStream Resulting input stream.

Throws:

FileNotFoundException

See Also:

Context.openFileOutput(java.lang.String, int), Context.fileList(), Context.deleteFile(java.lang.String), FileInputStream.FileInputStream(String)

openFileOutput

public FileOutputStream openFileOutput(String name,
                                       int mode)
                                throws FileNotFoundException

Description copied from class: Context

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

Specified by:

openFileOutput in class Context

Parameters:

name - The name of the file to open; can not contain path separators.

mode - Operating mode. Use 0 or Context.MODE_PRIVATE for the default operation, Context.MODE_APPEND to append to an existing file, Context.MODE_WORLD_READABLE and Context.MODE_WORLD_WRITEABLE to control permissions.

Returns:

FileOutputStream Resulting output stream.

Throws:

FileNotFoundException

See Also:

Context.MODE_APPEND, Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, Context.openFileInput(java.lang.String), Context.fileList(), Context.deleteFile(java.lang.String), FileOutputStream.FileOutputStream(String)

deleteFile

public boolean deleteFile(String name)

Description copied from class: Context

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

Specified by:

deleteFile in class Context

Parameters:

name - The name of the file to delete; can not contain path separators.

Returns:

True if the file was successfully deleted; else false.

See Also:

Context.openFileInput(java.lang.String), Context.openFileOutput(java.lang.String, int), Context.fileList(), File.delete()

getFileStreamPath

public File getFileStreamPath(String name)

Description copied from class: Context

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

Specified by:

getFileStreamPath in class Context

Parameters:

name - The name of the file for which you would like to get its path.

Returns:

Returns an absolute path to the given file.

See Also:

Context.openFileOutput(java.lang.String, int), Context.getFilesDir(), Context.getDir(java.lang.String, int)

fileList

public String[] fileList()

Description copied from class: Context

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

Specified by:

fileList in class Context

Returns:

Array of strings naming the private files.

See Also:

Context.openFileInput(java.lang.String), Context.openFileOutput(java.lang.String, int), Context.deleteFile(java.lang.String)

getFilesDir

public File getFilesDir()

Description copied from class: Context

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

Specified by:

getFilesDir in class Context

Returns:

Returns the path of the directory holding application files.

See Also:

Context.openFileOutput(java.lang.String, int), Context.getFileStreamPath(java.lang.String), Context.getDir(java.lang.String, int)

getCacheDir

public File getCacheDir()

Description copied from class: Context

Returns the absolute path to the application specific cache directory on the filesystem. These files will be ones that get deleted first when the device runs low on storage There is no guarantee when these files will be deleted.

Specified by:

getCacheDir in class Context

Returns:

Returns the path of the directory holding application cache files.

See Also:

Context.openFileOutput(java.lang.String, int), Context.getFileStreamPath(java.lang.String), Context.getDir(java.lang.String, int)

getDir

public File getDir(String name,
                   int mode)

Description copied from class: Context

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.

Specified by:

getDir in class Context

Parameters:

name - Name of the directory to retrieve. This is a directory that is created as part of your application data.

mode - Operating mode. Use 0 or Context.MODE_PRIVATE for the default operation, Context.MODE_WORLD_READABLE and Context.MODE_WORLD_WRITEABLE to control permissions.

Returns:

Returns a File object for the requested directory. The directory will have been created if it does not already exist.

See Also:

Context.openFileOutput(String, int)

openOrCreateDatabase

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

Description copied from class: Context

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

Specified by:

openOrCreateDatabase in class Context

Parameters:

name - The name (unique in the application package) of the database.

mode - Operating mode. Use 0 or Context.MODE_PRIVATE for the default operation, Context.MODE_WORLD_READABLE and Context.MODE_WORLD_WRITEABLE to control permissions.

factory - An optional factory class that is called to instantiate a cursor when query is called.

Returns:

The contents of a newly created database with the given name.

See Also:

Context.MODE_PRIVATE, Context.MODE_WORLD_READABLE, Context.MODE_WORLD_WRITEABLE, Context.deleteDatabase(java.lang.String)

deleteDatabase

public boolean deleteDatabase(String name)

Description copied from class: Context

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

Specified by:

deleteDatabase in class Context

Parameters:

name - The name (unique in the application package) of the database.

Returns:

True if the database was successfully deleted; else false.

See Also:

Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase.CursorFactory)

getDatabasePath

public File getDatabasePath(String name)

Description copied from class: Context

Returns the absolute path on the filesystem where a database created with Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase.CursorFactory) is stored.

Specified by:

getDatabasePath in class Context

Parameters:

name - The name of the database for which you would like to get its path.

Returns:

Returns an absolute path to the given database.

See Also:

Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase.CursorFactory)

databaseList

public String[] databaseList()

Description copied from class: Context

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

Specified by:

databaseList in class Context

Returns:

Array of strings naming the private databases.

See Also:

Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase.CursorFactory), Context.deleteDatabase(java.lang.String)

getWallpaper

public Drawable getWallpaper()

Description copied from class: Context

Like Context.peekWallpaper(), but always returns a valid Drawable. If no wallpaper is set, the system default wallpaper is returned.

Specified by:

getWallpaper in class Context

Returns:

Returns a Drawable object that will draw the wallpaper.

peekWallpaper

public Drawable peekWallpaper()

Description copied from class: Context

Retrieve the current system wallpaper. This is returned as an abstract Drawable that you can install in a View to display whatever wallpaper the user has currently set. If there is no wallpaper set, a null pointer is returned.

Specified by:

peekWallpaper in class Context

Returns:

Returns a Drawable object that will draw the wallpaper or a null pointer if these is none.

getWallpaperDesiredMinimumWidth

public int getWallpaperDesiredMinimumWidth()

Description copied from class: Context

Returns the desired minimum width for the wallpaper. Callers of Context.setWallpaper(android.graphics.Bitmap) or Context.setWallpaper(java.io.InputStream) should check this value beforehand to make sure the supplied wallpaper respects the desired minimum width. If the returned value is <= 0, the caller should use the width of the default display instead.

Specified by:

getWallpaperDesiredMinimumWidth in class Context

Returns:

The desired minimum width for the wallpaper. This value should be honored by applications that set the wallpaper but it is not mandatory.

getWallpaperDesiredMinimumHeight

public int getWallpaperDesiredMinimumHeight()

Description copied from class: Context

Returns the desired minimum height for the wallpaper. Callers of Context.setWallpaper(android.graphics.Bitmap) or Context.setWallpaper(java.io.InputStream) should check this value beforehand to make sure the supplied wallpaper respects the desired minimum height. If the returned value is <= 0, the caller should use the height of the default display instead.

Specified by:

getWallpaperDesiredMinimumHeight in class Context

Returns:

The desired minimum height for the wallpaper. This value should be honored by applications that set the wallpaper but it is not mandatory.

setWallpaper

public void setWallpaper(Bitmap bitmap)
                  throws IOException

Description copied from class: Context

Change the current system wallpaper to a bitmap. The given bitmap is converted to a PNG and stored as the wallpaper. On success, the intent Intent.ACTION_WALLPAPER_CHANGED is broadcast.

Specified by:

setWallpaper in class Context

Parameters:

bitmap - The bitmap to save.

Throws:

IOException - If an error occurs reverting to the default wallpaper.

setWallpaper

public void setWallpaper(InputStream data)
                  throws IOException

Description copied from class: Context

Change the current system wallpaper to a specific byte stream. The give InputStream is copied into persistent storage and will now be used as the wallpaper. Currently it must be either a JPEG or PNG image. On success, the intent Intent.ACTION_WALLPAPER_CHANGED is broadcast.

Specified by:

setWallpaper in class Context

Parameters:

data - A stream containing the raw data to install as a wallpaper.

Throws:

IOException - If an error occurs reverting to the default wallpaper.

clearWallpaper

public void clearWallpaper()
                    throws IOException

Description copied from class: Context

Remove any currently set wallpaper, reverting to the system's default wallpaper. On success, the intent Intent.ACTION_WALLPAPER_CHANGED is broadcast.

Specified by:

clearWallpaper in class Context

Throws:

IOException - If an error occurs reverting to the default wallpaper.

startActivity

public void startActivity(Intent intent)

Description copied from class: Context

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.

Specified by:

startActivity in class Context

Parameters:

intent - The description of the activity to start.

See Also:

PackageManager.resolveActivity(android.content.Intent, int)

sendBroadcast

public void sendBroadcast(Intent intent)

Description copied from class: Context

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 Context.sendOrderedBroadcast(Intent, String).

See BroadcastReceiver for more information on Intent broadcasts.

Specified by:

sendBroadcast in class Context

Parameters:

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

See Also:

BroadcastReceiver, Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter), Context.sendBroadcast(Intent, String), Context.sendOrderedBroadcast(Intent, String), Context.sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)

sendBroadcast

public void sendBroadcast(Intent intent,
                          String receiverPermission)

Description copied from class: Context

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 Context.sendOrderedBroadcast(Intent, String).

See BroadcastReceiver for more information on Intent broadcasts.

Specified by:

sendBroadcast in class Context

Parameters:

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

receiverPermission - (optional) String naming a permissions that a receiver must hold in order to receive your broadcast. If null, no permission is required.

See Also:

BroadcastReceiver, Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter), Context.sendBroadcast(Intent), Context.sendOrderedBroadcast(Intent, String), Context.sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)

sendOrderedBroadcast

public void sendOrderedBroadcast(Intent intent,
                                 String receiverPermission)

Description copied from class: Context

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.

Specified by:

sendOrderedBroadcast in class Context

Parameters:

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

receiverPermission - (optional) String naming a permissions that a receiver must hold in order to receive your broadcast. If null, no permission is required.

See Also:

BroadcastReceiver, Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter), Context.sendBroadcast(Intent), Context.sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)

sendOrderedBroadcast

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

Description copied from class: Context

Version of Context.sendBroadcast(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(android.content.Context, android.content.Intent) method will be called with the result values collected from the other receivers. If you use an resultReceiver with this method, then the broadcast will be serialized in the same way as calling Context.sendOrderedBroadcast(Intent, String).

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

See BroadcastReceiver for more information on Intent broadcasts.

Specified by:

sendOrderedBroadcast in class Context

Parameters:

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

receiverPermission - String naming a permissions that a receiver must hold in order to receive your broadcast. If null, no permission is required.

resultReceiver - Your own BroadcastReceiver to treat as the final receiver of the broadcast.

scheduler - A custom Handler with which to schedule the resultReceiver callback; if null it will be scheduled in the Context's main thread.

initialCode - An initial value for the result code. Often Activity.RESULT_OK.

initialData - An initial value for the result data. Often null.

initialExtras - An initial value for the result extras. Often null.

See Also:

Context.sendBroadcast(Intent), Context.sendBroadcast(Intent, String), Context.sendOrderedBroadcast(Intent, String), Context.sendStickyBroadcast(Intent), BroadcastReceiver, Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter), Activity.RESULT_OK

sendStickyBroadcast

public void sendStickyBroadcast(Intent intent)

Description copied from class: Context

Perform a Context.sendBroadcast(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 Context.registerReceiver(BroadcastReceiver, IntentFilter). In all other ways, this behaves the same as Context.sendBroadcast(Intent).

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.

Specified by:

sendStickyBroadcast in class Context

Parameters:

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.

See Also:

Context.sendBroadcast(Intent)

removeStickyBroadcast

public void removeStickyBroadcast(Intent intent)

Description copied from class: Context

Remove the data previously sent with Context.sendStickyBroadcast(android.content.Intent), so that it is as if the sticky broadcast had never happened.

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.

Specified by:

removeStickyBroadcast in class Context

Parameters:

intent - The Intent that was previously broadcast.

See Also:

Context.sendStickyBroadcast(android.content.Intent)

registerReceiver

public Intent registerReceiver(BroadcastReceiver receiver,
                               IntentFilter filter)

Description copied from class: Context

Register an 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 as 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.

Note: this method can not be called from an BroadcastReceiver component. It is okay, however, to use this method from another BroadcastReceiver that has itself been registered with Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter), since the lifetime of such an BroadcastReceiver is tied to another object (the one that registered it).

Specified by:

registerReceiver in class Context

Parameters:

receiver - The BroadcastReceiver to handle the broadcast.

filter - Selects the Intent broadcasts to be received.

Returns:

The first sticky intent found that matches filter, or null if there are none.

See Also:

Context.registerReceiver(BroadcastReceiver, IntentFilter, String, Handler), Context.sendBroadcast(android.content.Intent), Context.unregisterReceiver(android.content.BroadcastReceiver)

registerReceiver

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

Description copied from class: Context

Register to receive intent broadcasts, to run in the context of scheduler. See Context.registerReceiver(BroadcastReceiver, 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.

Specified by:

registerReceiver in class Context

Parameters:

receiver - The BroadcastReceiver to handle the broadcast.

filter - Selects the Intent broadcasts to be received.

broadcastPermission - String naming a permissions that a broadcaster must hold in order to send an Intent to you. If null, no permission is required.

scheduler - Handler identifying the thread that will receive the Intent. If null, the main thread of the process will be used.

Returns:

The first sticky intent found that matches filter, or null if there are none.

See Also:

Context.registerReceiver(BroadcastReceiver, IntentFilter), Context.sendBroadcast(android.content.Intent), Context.unregisterReceiver(android.content.BroadcastReceiver)

unregisterReceiver

public void unregisterReceiver(BroadcastReceiver receiver)

Description copied from class: Context

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

Specified by:

unregisterReceiver in class Context

Parameters:

receiver - The BroadcastReceiver to unregister.

See Also:

Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter)

startService

public ComponentName startService(Intent service)

Description copied from class: Context

Request that a given application service be started. The Intent can either contain the complete class name of a specific service implementation to start, or an abstract definition through the action and other fields of the kind of service to start. 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.onStart(android.content.Intent, 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 Context.bindService(android.content.Intent, android.content.ServiceConnection, int): it requires the service to remain running until Context.stopService(android.content.Intent) is called, regardless of whether any clients are connected to it. Note that calls to startService() are not nesting: no matter how many times you call startService(), a single call to Context.stopService(android.content.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.

Specified by:

startService in class Context

Parameters:

service - Identifies the service to be started. The Intent may specify either an explicit component name to start, or a logical description (action, category, etc) to match an IntentFilter published by a service. Additional values may be included in the Intent extras to supply arguments along with this specific start call.

Returns:

If the service is being started or is already running, the ComponentName of the actual service that was started is returned; else if the service does not exist null is returned.

See Also:

Context.stopService(android.content.Intent), Context.bindService(android.content.Intent, android.content.ServiceConnection, int)

stopService

public boolean stopService(Intent name)

Description copied from class: Context

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.

Note that if a stopped service still has ServiceConnection objects bound to it with the Context.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.

Specified by:

stopService in class Context

Parameters:

name - Description of the service to be stopped. The Intent may specify either an explicit component name to start, or a logical description (action, category, etc) to match an IntentFilter published by a service.

Returns:

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.

See Also:

Context.startService(android.content.Intent)

bindService

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

Description copied from class: Context

Connect 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 its 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.

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

Note: this method can not be called from an BroadcastReceiver component. A pattern you can use to communicate from an BroadcastReceiver to a Service is to call Context.startService(android.content.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 an BroadcastReceiver that has been registered with Context.registerReceiver(android.content.BroadcastReceiver, android.content.IntentFilter), since the lifetime of this BroadcastReceiver is tied to another object (the one that registered it).

Specified by:

bindService in class Context

Parameters:

service - Identifies the service to connect to. The Intent may specify either an explicit component name, or a logical description (action, category, etc) to match an IntentFilter published by a service.

conn - Receives information as the service is started and stopped.

flags - Operation options for the binding. May be 0 or Context.BIND_AUTO_CREATE.

Returns:

If you have successfully bound to the service, true is returned; false is returned if the connection is not made so you will not receive the service object.

See Also:

Context.unbindService(android.content.ServiceConnection), Context.startService(android.content.Intent), Context.BIND_AUTO_CREATE

unbindService

public void unbindService(ServiceConnection conn)

Description copied from class: Context

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.

Specified by:

unbindService in class Context

Parameters:

conn - The connection interface previously supplied to bindService().

See Also:

Context.bindService(android.content.Intent, android.content.ServiceConnection, int)

startInstrumentation

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

Description copied from class: Context

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).

Specified by:

startInstrumentation in class Context

Parameters:

className - Name of the Instrumentation component to be run.

profileFile - Optional path to write profiling data as the instrumentation runs, or null for no profiling.

arguments - Additional optional arguments to pass to the instrumentation, or null.

Returns:

Returns true if the instrumentation was successfully started, else false if it could not be found.

getSystemService

public Object getSystemService(String name)

Description copied from class: Context

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:

Context.WINDOW_SERVICE ("window")

The top-level window manager in which you can place custom windows. The returned object is a WindowManager.

Context.LAYOUT_INFLATER_SERVICE ("layout_inflater")

A LayoutInflater for inflating layout resources in this context.

Context.ACTIVITY_SERVICE ("activity")

A ActivityManager for interacting with the global activity state of the system.

Context.POWER_SERVICE ("power")

A PowerManager for controlling power management.

Context.ALARM_SERVICE ("alarm")

A AlarmManager for receiving intents at the time of your choosing.

Context.NOTIFICATION_SERVICE ("notification")

A NotificationManager for informing the user of background events.

Context.KEYGUARD_SERVICE ("keyguard")

A KeyguardManager for controlling keyguard.

Context.LOCATION_SERVICE ("location")

A LocationManager for controlling location (e.g., GPS) updates.

Context.SEARCH_SERVICE ("search")

A SearchManager for handling search.

Context.VIBRATOR_SERVICE ("vibrator")

A Vibrator for interacting with the vibrator hardware.

Context.CONNECTIVITY_SERVICE ("connection")

A ConnectivityManager for handling management of network connections.

Context.WIFI_SERVICE ("wifi")

A WifiManager for management of Wi-Fi connectivity.

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.)

Specified by:

getSystemService in class Context

Parameters:

name - The name of the desired service.

Returns:

The service or null if the name does not exist.

See Also:

Context.WINDOW_SERVICE, WindowManager, Context.LAYOUT_INFLATER_SERVICE, LayoutInflater, Context.ACTIVITY_SERVICE, ActivityManager, Context.POWER_SERVICE, PowerManager, Context.ALARM_SERVICE, AlarmManager, Context.NOTIFICATION_SERVICE, NotificationManager, Context.KEYGUARD_SERVICE, KeyguardManager, Context.LOCATION_SERVICE, LocationManager, Context.SEARCH_SERVICE, SearchManager, Context.SENSOR_SERVICE, SensorManager, Context.VIBRATOR_SERVICE, Vibrator, Context.CONNECTIVITY_SERVICE, ConnectivityManager, Context.WIFI_SERVICE, WifiManager, Context.AUDIO_SERVICE, AudioManager, Context.TELEPHONY_SERVICE, android.internal.TelephonyManager

checkPermission

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

Description copied from class: Context

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

Specified by:

checkPermission in class Context

Parameters:

permission - The name of the permission being checked.

pid - The process ID being checked against. Must be > 0.

uid - The user ID being checked against. A uid of 0 is the root user, which will pass every permission check.

Returns:

Returns PackageManager.PERMISSION_GRANTED if the given pid/uid is allowed that permission, or PackageManager.PERMISSION_DENIED if it is not.

See Also:

PackageManager.checkPermission(String, String), Context.checkCallingPermission(java.lang.String)

checkCallingPermission

public int checkCallingPermission(String permission)

Description copied from class: Context

Determine whether the calling process of an IPC you are handling has been granted a particular permission. This is basically the same as calling Context.checkPermission(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 Context.checkCallingOrSelfPermission(java.lang.String) to avoid this protection.

Specified by:

checkCallingPermission in class Context

Parameters:

permission - The name of the permission being checked.

Returns:

Returns PackageManager.PERMISSION_GRANTED if the calling pid/uid is allowed that permission, or PackageManager.PERMISSION_DENIED if it is not.

See Also:

PackageManager.checkPermission(String, String), Context.checkPermission(java.lang.String, int, int), Context.checkCallingOrSelfPermission(java.lang.String)

checkCallingOrSelfPermission

public int checkCallingOrSelfPermission(String permission)

Description copied from class: Context

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

Specified by:

checkCallingOrSelfPermission in class Context

Parameters:

permission - The name of the permission being checked.

Returns:

Returns PackageManager.PERMISSION_GRANTED if the calling pid/uid is allowed that permission, or PackageManager.PERMISSION_DENIED if it is not.

See Also:

PackageManager.checkPermission(String, String), Context.checkPermission(java.lang.String, int, int), Context.checkCallingPermission(java.lang.String)

enforcePermission

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

Description copied from class: Context

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

Specified by:

enforcePermission in class Context

Parameters:

permission - The name of the permission being checked.

pid - The process ID being checked against. Must be > 0.

uid - The user ID being checked against. A uid of 0 is the root user, which will pass every permission check.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkPermission(String, int, int)

enforceCallingPermission

public void enforceCallingPermission(String permission,
                                     String message)

Description copied from class: Context

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 Context.enforcePermission(String, int, int, 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 Context.enforceCallingOrSelfPermission(java.lang.String, java.lang.String) to avoid this protection.

Specified by:

enforceCallingPermission in class Context

Parameters:

permission - The name of the permission being checked.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkCallingPermission(String)

enforceCallingOrSelfPermission

public void enforceCallingOrSelfPermission(String permission,
                                           String message)

Description copied from class: Context

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 Context.enforceCallingPermission(java.lang.String, java.lang.String), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Specified by:

enforceCallingOrSelfPermission in class Context

Parameters:

permission - The name of the permission being checked.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkCallingOrSelfPermission(String)

grantUriPermission

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

Description copied from class: Context

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 Context.revokeUriPermission(android.net.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.

Specified by:

grantUriPermission in class Context

Parameters:

toPackage - The package you would like to allow to access the Uri.

uri - The Uri you would like to grant access to.

modeFlags - The desired access modes. Any combination of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

See Also:

Context.revokeUriPermission(android.net.Uri, int)

revokeUriPermission

public void revokeUriPermission(Uri uri,
                                int modeFlags)

Description copied from class: Context

Remove all permissions to access a particular content provider Uri that were previously added with Context.grantUriPermission(java.lang.String, android.net.Uri, int). 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/one" will revoke both "content://foo/target" and "content://foo/target/sub", but not "content://foo".

Specified by:

revokeUriPermission in class Context

Parameters:

uri - The Uri you would like to revoke access to.

modeFlags - The desired access modes. Any combination of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

See Also:

Context.grantUriPermission(java.lang.String, android.net.Uri, int)

checkUriPermission

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

Description copied from class: Context

Determine whether a particular process and user ID 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.

Specified by:

checkUriPermission in class Context

Parameters:

uri - The uri that is being checked.

pid - The process ID being checked against. Must be > 0.

uid - The user ID being checked against. A uid of 0 is the root user, which will pass every permission check.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

Returns:

Returns PackageManager.PERMISSION_GRANTED if the given pid/uid is allowed to access that uri, or PackageManager.PERMISSION_DENIED if it is not.

See Also:

Context.checkCallingUriPermission(android.net.Uri, int)

checkCallingUriPermission

public int checkCallingUriPermission(Uri uri,
                                     int modeFlags)

Description copied from class: Context

Determine whether the calling process and user ID has been granted permission to access a specific URI. This is basically the same as calling Context.checkUriPermission(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.

Specified by:

checkCallingUriPermission in class Context

Parameters:

uri - The uri that is being checked.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

Returns:

Returns PackageManager.PERMISSION_GRANTED if the caller is allowed to access that uri, or PackageManager.PERMISSION_DENIED if it is not.

See Also:

Context.checkUriPermission(Uri, int, int, int)

checkCallingOrSelfUriPermission

public int checkCallingOrSelfUriPermission(Uri uri,
                                           int modeFlags)

Description copied from class: Context

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

Specified by:

checkCallingOrSelfUriPermission in class Context

Parameters:

uri - The uri that is being checked.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

Returns:

Returns PackageManager.PERMISSION_GRANTED if the caller is allowed to access that uri, or PackageManager.PERMISSION_DENIED if it is not.

See Also:

Context.checkCallingUriPermission(android.net.Uri, int)

checkUriPermission

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

Description copied from class: Context

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

Specified by:

checkUriPermission in class Context

Parameters:

uri - The Uri whose permission is to be checked, or null to not do this check.

readPermission - The permission that provides overall read access, or null to not do this check.

writePermission - The permission that provides overall write acess, or null to not do this check.

pid - The process ID being checked against. Must be > 0.

uid - The user ID being checked against. A uid of 0 is the root user, which will pass every permission check.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

Returns:

Returns 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.

enforceUriPermission

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

Description copied from class: Context

If a particular process and user ID 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.

Specified by:

enforceUriPermission in class Context

Parameters:

uri - The uri that is being checked.

pid - The process ID being checked against. Must be > 0.

uid - The user ID being checked against. A uid of 0 is the root user, which will pass every permission check.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkUriPermission(Uri, int, int, int)

enforceCallingUriPermission

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

Description copied from class: Context

If the calling process and user ID has not been granted permission to access a specific URI, throw SecurityException. This is basically the same as calling Context.enforceUriPermission(Uri, int, int, int, 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.

Specified by:

enforceCallingUriPermission in class Context

Parameters:

uri - The uri that is being checked.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkCallingUriPermission(Uri, int)

enforceCallingOrSelfUriPermission

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

Description copied from class: Context

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 Context.enforceCallingUriPermission(android.net.Uri, int, java.lang.String), except it grants your own permissions if you are not currently processing an IPC. Use with care!

Specified by:

enforceCallingOrSelfUriPermission in class Context

Parameters:

uri - The uri that is being checked.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkCallingOrSelfUriPermission(Uri, int)

enforceUriPermission

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

Description copied from class: Context

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

Specified by:

enforceUriPermission in class Context

Parameters:

uri - The Uri whose permission is to be checked, or null to not do this check.

readPermission - The permission that provides overall read access, or null to not do this check.

writePermission - The permission that provides overall write acess, or null to not do this check.

pid - The process ID being checked against. Must be > 0.

uid - The user ID being checked against. A uid of 0 is the root user, which will pass every permission check.

modeFlags - The type of access to grant. May be one or both of Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION.

message - A message to include in the exception if it is thrown.

See Also:

Context.checkUriPermission(Uri, String, String, int, int, int)

createPackageContext

public Context createPackageContext(String packageName,
                                    int flags)
                             throws PackageManager.NameNotFoundException

Description copied from class: Context

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.CONTEXT_INCLUDE_CODE for more information}.

Specified by:

createPackageContext in class Context

Parameters:

packageName - Name of the application's package.

flags - Option flags, one of Context.CONTEXT_INCLUDE_CODE or Context.CONTEXT_IGNORE_SECURITY.

Returns:

A Context for the application.

Throws:

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