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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.content;
import android.annotation.AttrRes;
import android.annotation.CheckResult;
import android.annotation.ColorInt;
import android.annotation.ColorRes;
import android.annotation.DrawableRes;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.StringDef;
import android.annotation.StringRes;
import android.annotation.StyleRes;
import android.annotation.StyleableRes;
import android.annotation.SystemApi;
import android.annotation.TestApi;
import android.annotation.UserIdInt;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.AssetManager;
import android.content.res.ColorStateList;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.database.DatabaseErrorHandler;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.StatFs;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.MediaStore;
import android.util.AttributeSet;
import android.view.Display;
import android.view.DisplayAdjustments;
import android.view.ViewDebug;
import android.view.WindowManager;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* Interface to global information about an application environment. This is
* an abstract class whose implementation is provided by
* the Android system. It
* allows access to application-specific resources and classes, as well as
* up-calls for application-level operations such as launching activities,
* broadcasting and receiving intents, etc.
*/
public abstract class Context {
/**
* File creation mode: the default mode, where the created file can only
* be accessed by the calling application (or all applications sharing the
* same user ID).
*/
public static final int MODE_PRIVATE = 0x0000;
/**
* File creation mode: allow all other applications to have read access to
* the created file.
*
* As of {@link android.os.Build.VERSION_CODES#N} attempting to use this
* mode will throw a {@link SecurityException}.
*
* @deprecated Creating world-readable files is very dangerous, and likely
* to cause security holes in applications. It is strongly
* discouraged; instead, applications should use more formal
* mechanism for interactions such as {@link ContentProvider},
* {@link BroadcastReceiver}, and {@link android.app.Service}.
* There are no guarantees that this access mode will remain on
* a file, such as when it goes through a backup and restore.
* @see android.support.v4.content.FileProvider
* @see Intent#FLAG_GRANT_WRITE_URI_PERMISSION
*/
@Deprecated
public static final int MODE_WORLD_READABLE = 0x0001;
/**
* File creation mode: allow all other applications to have write access to
* the created file.
*
* As of {@link android.os.Build.VERSION_CODES#N} attempting to use this
* mode will throw a {@link SecurityException}.
*
* @deprecated Creating world-writable files is very dangerous, and likely
* to cause security holes in applications. It is strongly
* discouraged; instead, applications should use more formal
* mechanism for interactions such as {@link ContentProvider},
* {@link BroadcastReceiver}, and {@link android.app.Service}.
* There are no guarantees that this access mode will remain on
* a file, such as when it goes through a backup and restore.
* @see android.support.v4.content.FileProvider
* @see Intent#FLAG_GRANT_WRITE_URI_PERMISSION
*/
@Deprecated
public static final int MODE_WORLD_WRITEABLE = 0x0002;
/**
* File creation mode: for use with {@link #openFileOutput}, if the file
* already exists then write data to the end of the existing file
* instead of erasing it.
* @see #openFileOutput
*/
public static final int MODE_APPEND = 0x8000;
/**
* SharedPreference loading flag: when set, the file on disk will
* be checked for modification even if the shared preferences
* instance is already loaded in this process. This behavior is
* sometimes desired in cases where the application has multiple
* processes, all writing to the same SharedPreferences file.
* Generally there are better forms of communication between
* processes, though.
*
*
This was the legacy (but undocumented) behavior in and
* before Gingerbread (Android 2.3) and this flag is implied when
* targetting such releases. For applications targetting SDK
* versions greater than Android 2.3, this flag must be
* explicitly set if desired.
*
* @see #getSharedPreferences
*
* @deprecated MODE_MULTI_PROCESS does not work reliably in
* some versions of Android, and furthermore does not provide any
* mechanism for reconciling concurrent modifications across
* processes. Applications should not attempt to use it. Instead,
* they should use an explicit cross-process data management
* approach such as {@link android.content.ContentProvider ContentProvider}.
*/
@Deprecated
public static final int MODE_MULTI_PROCESS = 0x0004;
/**
* Database open flag: when set, the database is opened with write-ahead
* logging enabled by default.
*
* @see #openOrCreateDatabase(String, int, CursorFactory)
* @see #openOrCreateDatabase(String, int, CursorFactory, DatabaseErrorHandler)
* @see SQLiteDatabase#enableWriteAheadLogging
*/
public static final int MODE_ENABLE_WRITE_AHEAD_LOGGING = 0x0008;
/**
* Database open flag: when set, the database is opened without support for
* localized collators.
*
* @see #openOrCreateDatabase(String, int, CursorFactory)
* @see #openOrCreateDatabase(String, int, CursorFactory, DatabaseErrorHandler)
* @see SQLiteDatabase#NO_LOCALIZED_COLLATORS
*/
public static final int MODE_NO_LOCALIZED_COLLATORS = 0x0010;
/** @hide */
@IntDef(flag = true,
value = {
BIND_AUTO_CREATE,
BIND_DEBUG_UNBIND,
BIND_NOT_FOREGROUND,
BIND_ABOVE_CLIENT,
BIND_ALLOW_OOM_MANAGEMENT,
BIND_WAIVE_PRIORITY,
BIND_IMPORTANT,
BIND_ADJUST_WITH_ACTIVITY
})
@Retention(RetentionPolicy.SOURCE)
public @interface BindServiceFlags {}
/**
* Flag for {@link #bindService}: automatically create the service as long
* as the binding exists. Note that while this will create the service,
* its {@link android.app.Service#onStartCommand}
* method will still only be called due to an
* explicit call to {@link #startService}. Even without that, though,
* this still provides you with access to the service object while the
* service is created.
*
*
Note that prior to {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH},
* not supplying this flag would also impact how important the system
* consider's the target service's process to be. When set, the only way
* for it to be raised was by binding from a service in which case it will
* only be important when that activity is in the foreground. Now to
* achieve this behavior you must explicitly supply the new flag
* {@link #BIND_ADJUST_WITH_ACTIVITY}. For compatibility, old applications
* that don't specify {@link #BIND_AUTO_CREATE} will automatically have
* the flags {@link #BIND_WAIVE_PRIORITY} and
* {@link #BIND_ADJUST_WITH_ACTIVITY} set for them in order to achieve
* the same result.
*/
public static final int BIND_AUTO_CREATE = 0x0001;
/**
* Flag for {@link #bindService}: include debugging help for mismatched
* calls to unbind. When this flag is set, the callstack of the following
* {@link #unbindService} call is retained, to be printed if a later
* incorrect unbind call is made. Note that doing this requires retaining
* information about the binding that was made for the lifetime of the app,
* resulting in a leak -- this should only be used for debugging.
*/
public static final int BIND_DEBUG_UNBIND = 0x0002;
/**
* Flag for {@link #bindService}: don't allow this binding to raise
* the target service's process to the foreground scheduling priority.
* It will still be raised to at least the same memory priority
* as the client (so that its process will not be killable in any
* situation where the client is not killable), but for CPU scheduling
* purposes it may be left in the background. This only has an impact
* in the situation where the binding client is a foreground process
* and the target service is in a background process.
*/
public static final int BIND_NOT_FOREGROUND = 0x0004;
/**
* Flag for {@link #bindService}: indicates that the client application
* binding to this service considers the service to be more important than
* the app itself. When set, the platform will try to have the out of
* memory killer kill the app before it kills the service it is bound to, though
* this is not guaranteed to be the case.
*/
public static final int BIND_ABOVE_CLIENT = 0x0008;
/**
* Flag for {@link #bindService}: allow the process hosting the bound
* service to go through its normal memory management. It will be
* treated more like a running service, allowing the system to
* (temporarily) expunge the process if low on memory or for some other
* whim it may have, and being more aggressive about making it a candidate
* to be killed (and restarted) if running for a long time.
*/
public static final int BIND_ALLOW_OOM_MANAGEMENT = 0x0010;
/**
* Flag for {@link #bindService}: don't impact the scheduling or
* memory management priority of the target service's hosting process.
* Allows the service's process to be managed on the background LRU list
* just like a regular application process in the background.
*/
public static final int BIND_WAIVE_PRIORITY = 0x0020;
/**
* Flag for {@link #bindService}: this service is very important to
* the client, so should be brought to the foreground process level
* when the client is. Normally a process can only be raised to the
* visibility level by a client, even if that client is in the foreground.
*/
public static final int BIND_IMPORTANT = 0x0040;
/**
* Flag for {@link #bindService}: If binding from an activity, allow the
* target service's process importance to be raised based on whether the
* activity is visible to the user, regardless whether another flag is
* used to reduce the amount that the client process's overall importance
* is used to impact it.
*/
public static final int BIND_ADJUST_WITH_ACTIVITY = 0x0080;
/**
* @hide Flag for {@link #bindService}: allows application hosting service to manage whitelists
* such as temporary allowing a {@code PendingIntent} to bypass Power Save mode.
*/
public static final int BIND_ALLOW_WHITELIST_MANAGEMENT = 0x01000000;
/**
* @hide Flag for {@link #bindService}: Like {@link #BIND_FOREGROUND_SERVICE},
* but only applies while the device is awake.
*/
public static final int BIND_FOREGROUND_SERVICE_WHILE_AWAKE = 0x02000000;
/**
* @hide Flag for {@link #bindService}: For only the case where the binding
* is coming from the system, set the process state to FOREGROUND_SERVICE
* instead of the normal maximum of IMPORTANT_FOREGROUND. That is, this is
* saying that the process shouldn't participate in the normal power reduction
* modes (removing network access etc).
*/
public static final int BIND_FOREGROUND_SERVICE = 0x04000000;
/**
* @hide Flag for {@link #bindService}: Treat the binding as hosting
* an activity, an unbinding as the activity going in the background.
* That is, when unbinding, the process when empty will go on the activity
* LRU list instead of the regular one, keeping it around more aggressively
* than it otherwise would be. This is intended for use with IMEs to try
* to keep IME processes around for faster keyboard switching.
*/
public static final int BIND_TREAT_LIKE_ACTIVITY = 0x08000000;
/**
* @hide An idea that is not yet implemented.
* Flag for {@link #bindService}: If binding from an activity, consider
* this service to be visible like the binding activity is. That is,
* it will be treated as something more important to keep around than
* invisible background activities. This will impact the number of
* recent activities the user can switch between without having them
* restart. There is no guarantee this will be respected, as the system
* tries to balance such requests from one app vs. the importantance of
* keeping other apps around.
*/
public static final int BIND_VISIBLE = 0x10000000;
/**
* @hide
* Flag for {@link #bindService}: Consider this binding to be causing the target
* process to be showing UI, so it will be do a UI_HIDDEN memory trim when it goes
* away.
*/
public static final int BIND_SHOWING_UI = 0x20000000;
/**
* Flag for {@link #bindService}: Don't consider the bound service to be
* visible, even if the caller is visible.
* @hide
*/
public static final int BIND_NOT_VISIBLE = 0x40000000;
/**
* Flag for {@link #bindService}: The service being bound is an
* {@link android.R.attr#isolatedProcess isolated},
* {@link android.R.attr#externalService external} service. This binds the service into the
* calling application's package, rather than the package in which the service is declared.
*
* When using this flag, the code for the service being bound will execute under the calling
* application's package name and user ID. Because the service must be an isolated process,
* it will not have direct access to the application's data, though.
*
* The purpose of this flag is to allow applications to provide services that are attributed
* to the app using the service, rather than the application providing the service.
*
*/
public static final int BIND_EXTERNAL_SERVICE = 0x80000000;
/**
* 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 {@link #getResources()}. For example, they should share the
* same {@link Configuration} object.
*
* @return an AssetManager instance for the application's package
* @see #getResources()
*/
public abstract AssetManager getAssets();
/**
* 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 {@link #getAssets()}. For example, they should share the
* same {@link Configuration} object.
*
* @return a Resources instance for the application's package
* @see #getAssets()
*/
public abstract Resources getResources();
/** Return PackageManager instance to find global package information. */
public abstract PackageManager getPackageManager();
/** Return a ContentResolver instance for your application's package. */
public abstract ContentResolver getContentResolver();
/**
* 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 {@link Looper#getMainLooper() Looper.getMainLooper()}.
*
*
* @return The main looper.
*/
public abstract Looper getMainLooper();
/**
* 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
* {@link #registerReceiver(BroadcastReceiver, 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.
*
*/
public abstract Context getApplicationContext();
/**
* Add a new {@link 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 {@link #unregisterComponentCallbacks} when
* appropriate in the future; this will not be removed for you.
*
* @param callback The interface to call. This can be either a
* {@link ComponentCallbacks} or {@link ComponentCallbacks2} interface.
*/
public void registerComponentCallbacks(ComponentCallbacks callback) {
getApplicationContext().registerComponentCallbacks(callback);
}
/**
* Remove a {@link ComponentCallbacks} object that was previously registered
* with {@link #registerComponentCallbacks(ComponentCallbacks)}.
*/
public void unregisterComponentCallbacks(ComponentCallbacks callback) {
getApplicationContext().unregisterComponentCallbacks(callback);
}
/**
* Return a localized, styled CharSequence from the application's package's
* default string table.
*
* @param resId Resource id for the CharSequence text
*/
public final CharSequence getText(@StringRes int resId) {
return getResources().getText(resId);
}
/**
* Returns a localized string from the application's package's
* default string table.
*
* @param resId Resource id for the string
* @return The string data associated with the resource, stripped of styled
* text information.
*/
@NonNull
public final String getString(@StringRes int resId) {
return getResources().getString(resId);
}
/**
* Returns a localized formatted string from the application's package's
* default string table, substituting the format arguments as defined in
* {@link java.util.Formatter} and {@link java.lang.String#format}.
*
* @param resId Resource id for the format string
* @param formatArgs The format arguments that will be used for
* substitution.
* @return The string data associated with the resource, formatted and
* stripped of styled text information.
*/
@NonNull
public final String getString(@StringRes int resId, Object... formatArgs) {
return getResources().getString(resId, formatArgs);
}
/**
* Returns a color associated with a particular resource ID and styled for
* the current theme.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @return A single color value in the form 0xAARRGGBB.
* @throws android.content.res.Resources.NotFoundException if the given ID
* does not exist.
*/
@ColorInt
public final int getColor(@ColorRes int id) {
return getResources().getColor(id, getTheme());
}
/**
* Returns a drawable object associated with a particular resource ID and
* styled for the current theme.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @return An object that can be used to draw this resource, or
* {@code null} if the resource could not be resolved.
* @throws android.content.res.Resources.NotFoundException if the given ID
* does not exist.
*/
@Nullable
public final Drawable getDrawable(@DrawableRes int id) {
return getResources().getDrawable(id, getTheme());
}
/**
* Returns a color state list associated with a particular resource ID and
* styled for the current theme.
*
* @param id The desired resource identifier, as generated by the aapt
* tool. This integer encodes the package, type, and resource
* entry. The value 0 is an invalid identifier.
* @return A color state list, or {@code null} if the resource could not be
* resolved.
* @throws android.content.res.Resources.NotFoundException if the given ID
* does not exist.
*/
@Nullable
public final ColorStateList getColorStateList(@ColorRes int id) {
return getResources().getColorStateList(id, getTheme());
}
/**
* 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 {@link android.app.Activity#setContentView} or
* {@link android.view.LayoutInflater#inflate}).
*
* @param resid The style resource describing the theme.
*/
public abstract void setTheme(@StyleRes int resid);
/** @hide Needed for some internal implementation... not public because
* you can't assume this actually means anything. */
public int getThemeResId() {
return 0;
}
/**
* Return the Theme object associated with this Context.
*/
@ViewDebug.ExportedProperty(deepExport = true)
public abstract Resources.Theme getTheme();
/**
* Retrieve styled attribute information in this Context's theme. See
* {@link android.content.res.Resources.Theme#obtainStyledAttributes(int[])}
* for more information.
*
* @see android.content.res.Resources.Theme#obtainStyledAttributes(int[])
*/
public final TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) {
return getTheme().obtainStyledAttributes(attrs);
}
/**
* Retrieve styled attribute information in this Context's theme. See
* {@link android.content.res.Resources.Theme#obtainStyledAttributes(int, int[])}
* for more information.
*
* @see android.content.res.Resources.Theme#obtainStyledAttributes(int, int[])
*/
public final TypedArray obtainStyledAttributes(
@StyleRes int resid, @StyleableRes int[] attrs) throws Resources.NotFoundException {
return getTheme().obtainStyledAttributes(resid, attrs);
}
/**
* Retrieve styled attribute information in this Context's theme. See
* {@link android.content.res.Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)}
* for more information.
*
* @see android.content.res.Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)
*/
public final TypedArray obtainStyledAttributes(
AttributeSet set, @StyleableRes int[] attrs) {
return getTheme().obtainStyledAttributes(set, attrs, 0, 0);
}
/**
* Retrieve styled attribute information in this Context's theme. See
* {@link android.content.res.Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)}
* for more information.
*
* @see android.content.res.Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)
*/
public final TypedArray obtainStyledAttributes(
AttributeSet set, @StyleableRes int[] attrs, @AttrRes int defStyleAttr,
@StyleRes int defStyleRes) {
return getTheme().obtainStyledAttributes(
set, attrs, defStyleAttr, defStyleRes);
}
/**
* Return a class loader you can use to retrieve classes in this package.
*/
public abstract ClassLoader getClassLoader();
/** Return the name of this application's package. */
public abstract String getPackageName();
/** @hide Return the name of the base context this context is derived from. */
public abstract String getBasePackageName();
/** @hide Return the package name that should be used for app ops calls from
* this context. This is the same as {@link #getBasePackageName()} except in
* cases where system components are loaded into other app processes, in which
* case this will be the name of the primary package in that process (so that app
* ops uid verification will work with the name). */
public abstract String getOpPackageName();
/** Return the full application info for this context's package. */
public abstract ApplicationInfo getApplicationInfo();
/**
* 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.
*
* @return String Path to the resources.
*/
public abstract String getPackageResourcePath();
/**
* 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.
*
* @return String Path to the code and assets.
*/
public abstract String getPackageCodePath();
/**
* @hide
* @deprecated use {@link #getSharedPreferencesPath(String)}
*/
@Deprecated
public File getSharedPrefsFile(String name) {
return getSharedPreferencesPath(name);
}
/**
* 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.
*
* @param 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()).
* @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
* default operation.
*
* @return The single {@link SharedPreferences} instance that can be used
* to retrieve and modify the preference values.
*
* @see #MODE_PRIVATE
*/
public abstract SharedPreferences getSharedPreferences(String name, int mode);
/**
* Retrieve and hold the contents of the preferences file, 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.
*
* @param file 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()).
* @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
* default operation.
*
* @return The single {@link SharedPreferences} instance that can be used
* to retrieve and modify the preference values.
*
* @see #getSharedPreferencesPath(String)
* @see #MODE_PRIVATE
* @removed
*/
public abstract SharedPreferences getSharedPreferences(File file, int mode);
/**
* 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.
*
* @param sourceContext The source context which contains the existing
* shared preferences to move.
* @param name The name of the shared preferences file.
* @return {@code true} if the move was successful or if the shared
* preferences didn't exist in the source context, otherwise
* {@code false}.
* @see #createDeviceProtectedStorageContext()
*/
public abstract boolean moveSharedPreferencesFrom(Context sourceContext, String name);
/** @removed */
@Deprecated
public boolean migrateSharedPreferencesFrom(Context sourceContext, String name) {
return moveSharedPreferencesFrom(sourceContext, name);
}
/**
* Delete an existing shared preferences file.
*
* @param name The name (unique in the application package) of the shared
* preferences file.
* @return {@code true} if the shared preferences file was successfully
* deleted; else {@code false}.
* @see #getSharedPreferences(String, int)
*/
public abstract boolean deleteSharedPreferences(String name);
/**
* Open a private file associated with this Context's application package
* for reading.
*
* @param name The name of the file to open; can not contain path
* separators.
*
* @return The resulting {@link FileInputStream}.
*
* @see #openFileOutput
* @see #fileList
* @see #deleteFile
* @see java.io.FileInputStream#FileInputStream(String)
*/
public abstract FileInputStream openFileInput(String name)
throws FileNotFoundException;
/**
* 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.
*
* @param name The name of the file to open; can not contain path
* separators.
* @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
* default operation. Use {@link #MODE_APPEND} to append to an
* existing file.
* @return The resulting {@link FileOutputStream}.
* @see #MODE_APPEND
* @see #MODE_PRIVATE
* @see #openFileInput
* @see #fileList
* @see #deleteFile
* @see java.io.FileOutputStream#FileOutputStream(String)
*/
public abstract FileOutputStream openFileOutput(String name, int mode)
throws FileNotFoundException;
/**
* Delete the given private file associated with this Context's
* application package.
*
* @param name The name of the file to delete; can not contain path
* separators.
*
* @return {@code true} if the file was successfully deleted; else
* {@code false}.
*
* @see #openFileInput
* @see #openFileOutput
* @see #fileList
* @see java.io.File#delete()
*/
public abstract boolean deleteFile(String name);
/**
* Returns the absolute path on the filesystem where a file created with
* {@link #openFileOutput} 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.
*
* @param name The name of the file for which you would like to get
* its path.
*
* @return An absolute path to the given file.
*
* @see #openFileOutput
* @see #getFilesDir
* @see #getDir
*/
public abstract File getFileStreamPath(String name);
/**
* Returns the absolute path on the filesystem where a file created with
* {@link #getSharedPreferences(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.
*
* @param name The name of the shared preferences for which you would like
* to get a path.
* @return An absolute path to the given file.
* @see #getSharedPreferences(String, int)
* @removed
*/
public abstract File getSharedPreferencesPath(String name);
/**
* 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 {@link #getFilesDir()},
* {@link #getCacheDir()}, {@link #getDir(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.
*
* @see ApplicationInfo#dataDir
*/
public abstract File getDataDir();
/**
* Returns the absolute path to the directory on the filesystem where files
* created with {@link #openFileOutput} 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.
*
* @return The path of the directory holding application files.
* @see #openFileOutput
* @see #getFileStreamPath
* @see #getDir
*/
public abstract File getFilesDir();
/**
* Returns the absolute path to the directory on the filesystem similar to
* {@link #getFilesDir()}. The difference is that files placed under this
* directory will be excluded from automatic backup to remote storage. See
* {@link android.app.backup.BackupAgent 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.
*
* @return The path of the directory holding application files that will not
* be automatically backed up to remote storage.
* @see #openFileOutput
* @see #getFileStreamPath
* @see #getDir
* @see android.app.backup.BackupAgent
*/
public abstract File getNoBackupFilesDir();
/**
* 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 {@link #getFilesDir()} in that these files will be deleted
* when the application is uninstalled, however there are some important
* differences:
*
* - Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* If a shared storage device is emulated (as determined by
* {@link Environment#isExternalStorageEmulated(File)}), it's 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 {@link #getFilesDir()}, etc.
*
* Starting in {@link android.os.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,
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} and/or
* {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} are required.
*
* On devices with multiple users (as described by {@link 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:
*
* {@sample development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java
* private_file}
*
* 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
* {@link android.media.MediaScannerConnection#scanFile(Context, String[], String[], android.media.MediaScannerConnection.OnScanCompletedListener)
* MediaScannerConnection.scanFile}. Note that this is not the same as
* {@link android.os.Environment#getExternalStoragePublicDirectory
* 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
* {@link android.os.Environment#getExternalStoragePublicDirectory
* 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:
*
* {@sample development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java
* private_picture}
*
* @param type The type of files directory to return. May be {@code null}
* for the root of the files directory or one of the following
* constants for a subdirectory:
* {@link android.os.Environment#DIRECTORY_MUSIC},
* {@link android.os.Environment#DIRECTORY_PODCASTS},
* {@link android.os.Environment#DIRECTORY_RINGTONES},
* {@link android.os.Environment#DIRECTORY_ALARMS},
* {@link android.os.Environment#DIRECTORY_NOTIFICATIONS},
* {@link android.os.Environment#DIRECTORY_PICTURES}, or
* {@link android.os.Environment#DIRECTORY_MOVIES}.
* @return the absolute path to application-specific directory. May return
* {@code null} if shared storage is not currently available.
* @see #getFilesDir
* @see #getExternalFilesDirs(String)
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
@Nullable
public abstract File getExternalFilesDir(@Nullable 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 {@link #getFilesDir()} in that these files will be deleted
* when the application is uninstalled, however there are some important
* differences:
*
* - Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* If a shared storage device is emulated (as determined by
* {@link Environment#isExternalStorageEmulated(File)}), it's 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 {@link #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 {@link 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.
*
* @param type The type of files directory to return. May be {@code null}
* for the root of the files directory or one of the following
* constants for a subdirectory:
* {@link android.os.Environment#DIRECTORY_MUSIC},
* {@link android.os.Environment#DIRECTORY_PODCASTS},
* {@link android.os.Environment#DIRECTORY_RINGTONES},
* {@link android.os.Environment#DIRECTORY_ALARMS},
* {@link android.os.Environment#DIRECTORY_NOTIFICATIONS},
* {@link android.os.Environment#DIRECTORY_PICTURES}, or
* {@link android.os.Environment#DIRECTORY_MOVIES}.
* @return the absolute paths to application-specific directories. Some
* individual paths may be {@code null} if that shared storage is
* not currently available. The first path returned is the same as
* {@link #getExternalFilesDir(String)}.
* @see #getExternalFilesDir(String)
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
public abstract File[] getExternalFilesDirs(String type);
/**
* 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 {@link #getFilesDir()} in that these files will be deleted
* when the application is uninstalled, however there are some important
* differences:
*
* - Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* Starting in {@link android.os.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,
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} and/or
* {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} are required.
*
* On devices with multiple users (as described by {@link 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.
*
* @return the absolute path to application-specific directory. May return
* {@code null} if shared storage is not currently available.
* @see #getObbDirs()
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
public abstract File getObbDir();
/**
* 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 {@link #getFilesDir()} in that these files will be deleted
* when the application is uninstalled, however there are some important
* differences:
*
* - Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* 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 {@link 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.
*
* @return the absolute paths to application-specific directories. Some
* individual paths may be {@code null} if that shared storage is
* not currently available. The first path returned is the same as
* {@link #getObbDir()}
* @see #getObbDir()
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
public abstract File[] getObbDirs();
/**
* 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.
*
* Note: you should not rely on the system deleting these
* files for you; you should always have a reasonable maximum, such as 1 MB,
* for the amount of space you consume with cache files, and prune those
* files when exceeding that space.
*
* 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.
*
* @return The path of the directory holding application cache files.
* @see #openFileOutput
* @see #getFileStreamPath
* @see #getDir
*/
public abstract File getCacheDir();
/**
* 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.
*
* @return The path of the directory holding application code cache files.
*/
public abstract File getCodeCacheDir();
/**
* 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 {@link #getCacheDir()} in that these files will be deleted
* when the application is uninstalled, however there are some important
* differences:
*
* - The platform does not always monitor the space available in shared
* storage, and thus may not automatically delete these files. Apps should
* always manage the maximum space used in this location. Currently the only
* time files here will be deleted by the platform is when running on
* {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} or later and
* {@link Environment#isExternalStorageEmulated(File)} returns true.
*
- Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* If a shared storage device is emulated (as determined by
* {@link Environment#isExternalStorageEmulated(File)}), it's 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
* {@link #getCacheDir()}.
*
* Starting in {@link android.os.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,
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} and/or
* {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} are required.
*
* On devices with multiple users (as described by {@link 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.
*
* @return the absolute path to application-specific directory. May return
* {@code null} if shared storage is not currently available.
* @see #getCacheDir
* @see #getExternalCacheDirs()
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
@Nullable
public abstract File getExternalCacheDir();
/**
* 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 {@link #getCacheDir()} in that these files will be deleted
* when the application is uninstalled, however there are some important
* differences:
*
* - The platform does not always monitor the space available in shared
* storage, and thus may not automatically delete these files. Apps should
* always manage the maximum space used in this location. Currently the only
* time files here will be deleted by the platform is when running on
* {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} or later and
* {@link Environment#isExternalStorageEmulated(File)} returns true.
*
- Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* If a shared storage device is emulated (as determined by
* {@link Environment#isExternalStorageEmulated(File)}), it's 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
* {@link #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 {@link 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.
*
* @return the absolute paths to application-specific directories. Some
* individual paths may be {@code null} if that shared storage is
* not currently available. The first path returned is the same as
* {@link #getExternalCacheDir()}.
* @see #getExternalCacheDir()
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
public abstract File[] getExternalCacheDirs();
/**
* 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
* {@link MediaStore}.
*
* This is like {@link #getExternalFilesDirs} in that these files will be
* deleted when the application is uninstalled, however there are some
* important differences:
*
* - Shared storage may not always be available, since removable media can
* be ejected by the user. Media state can be checked using
* {@link Environment#getExternalStorageState(File)}.
*
- There is no security enforced with these files. For example, any
* application holding
* {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} can write to
* these files.
*
*
* 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 {@link 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.
*
* @return the absolute paths to application-specific directories. Some
* individual paths may be {@code null} if that shared storage is
* not currently available.
* @see Environment#getExternalStorageState(File)
* @see Environment#isExternalStorageEmulated(File)
* @see Environment#isExternalStorageRemovable(File)
*/
public abstract File[] getExternalMediaDirs();
/**
* Returns an array of strings naming the private files associated with
* this Context's application package.
*
* @return Array of strings naming the private files.
*
* @see #openFileInput
* @see #openFileOutput
* @see #deleteFile
*/
public abstract String[] fileList();
/**
* 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.
*
* @param name Name of the directory to retrieve. This is a directory
* that is created as part of your application data.
* @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
* default operation.
*
* @return A {@link File} object for the requested directory. The directory
* will have been created if it does not already exist.
*
* @see #openFileOutput(String, int)
*/
public abstract File getDir(String name, int mode);
/**
* Open a new private SQLiteDatabase associated with this Context's
* application package. Create the database file if it doesn't exist.
*
* @param name The name (unique in the application package) of the database.
* @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
* default operation. Use
* {@link #MODE_ENABLE_WRITE_AHEAD_LOGGING} to enable write-ahead
* logging by default. Use {@link #MODE_NO_LOCALIZED_COLLATORS}
* to disable localized collators.
* @param factory An optional factory class that is called to instantiate a
* cursor when query is called.
* @return The contents of a newly created database with the given name.
* @throws android.database.sqlite.SQLiteException if the database file
* could not be opened.
* @see #MODE_PRIVATE
* @see #MODE_ENABLE_WRITE_AHEAD_LOGGING
* @see #MODE_NO_LOCALIZED_COLLATORS
* @see #deleteDatabase
*/
public abstract SQLiteDatabase openOrCreateDatabase(String name,
int mode, CursorFactory factory);
/**
* 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 {@link DatabaseErrorHandler}
* to be used to handle corruption when sqlite reports database corruption.
*
*
* @param name The name (unique in the application package) of the database.
* @param mode Operating mode. Use 0 or {@link #MODE_PRIVATE} for the
* default operation. Use
* {@link #MODE_ENABLE_WRITE_AHEAD_LOGGING} to enable write-ahead
* logging by default. Use {@link #MODE_NO_LOCALIZED_COLLATORS}
* to disable localized collators.
* @param factory An optional factory class that is called to instantiate a
* cursor when query is called.
* @param errorHandler the {@link DatabaseErrorHandler} to be used when
* sqlite reports database corruption. if null,
* {@link android.database.DefaultDatabaseErrorHandler} is
* assumed.
* @return The contents of a newly created database with the given name.
* @throws android.database.sqlite.SQLiteException if the database file
* could not be opened.
* @see #MODE_PRIVATE
* @see #MODE_ENABLE_WRITE_AHEAD_LOGGING
* @see #MODE_NO_LOCALIZED_COLLATORS
* @see #deleteDatabase
*/
public abstract SQLiteDatabase openOrCreateDatabase(String name,
int mode, CursorFactory factory,
@Nullable DatabaseErrorHandler errorHandler);
/**
* 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.
*
* @param sourceContext The source context which contains the existing
* database to move.
* @param name The name of the database file.
* @return {@code true} if the move was successful or if the database didn't
* exist in the source context, otherwise {@code false}.
* @see #createDeviceProtectedStorageContext()
*/
public abstract boolean moveDatabaseFrom(Context sourceContext, String name);
/** @removed */
@Deprecated
public boolean migrateDatabaseFrom(Context sourceContext, String name) {
return moveDatabaseFrom(sourceContext, name);
}
/**
* Delete an existing private SQLiteDatabase associated with this Context's
* application package.
*
* @param name The name (unique in the application package) of the
* database.
*
* @return {@code true} if the database was successfully deleted; else {@code false}.
*
* @see #openOrCreateDatabase
*/
public abstract boolean deleteDatabase(String name);
/**
* Returns the absolute path on the filesystem where a database created with
* {@link #openOrCreateDatabase} 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.
*
* @param name The name of the database for which you would like to get
* its path.
*
* @return An absolute path to the given database.
*
* @see #openOrCreateDatabase
*/
public abstract File getDatabasePath(String name);
/**
* Returns an array of strings naming the private databases associated with
* this Context's application package.
*
* @return Array of strings naming the private databases.
*
* @see #openOrCreateDatabase
* @see #deleteDatabase
*/
public abstract String[] databaseList();
/**
* @deprecated Use {@link android.app.WallpaperManager#getDrawable
* WallpaperManager.get()} instead.
*/
@Deprecated
public abstract Drawable getWallpaper();
/**
* @deprecated Use {@link android.app.WallpaperManager#peekDrawable
* WallpaperManager.peek()} instead.
*/
@Deprecated
public abstract Drawable peekWallpaper();
/**
* @deprecated Use {@link android.app.WallpaperManager#getDesiredMinimumWidth()
* WallpaperManager.getDesiredMinimumWidth()} instead.
*/
@Deprecated
public abstract int getWallpaperDesiredMinimumWidth();
/**
* @deprecated Use {@link android.app.WallpaperManager#getDesiredMinimumHeight()
* WallpaperManager.getDesiredMinimumHeight()} instead.
*/
@Deprecated
public abstract int getWallpaperDesiredMinimumHeight();
/**
* @deprecated Use {@link android.app.WallpaperManager#setBitmap(Bitmap)
* WallpaperManager.set()} instead.
*
This method requires the caller to hold the permission
* {@link android.Manifest.permission#SET_WALLPAPER}.
*/
@Deprecated
public abstract void setWallpaper(Bitmap bitmap) throws IOException;
/**
* @deprecated Use {@link android.app.WallpaperManager#setStream(InputStream)
* WallpaperManager.set()} instead.
*
This method requires the caller to hold the permission
* {@link android.Manifest.permission#SET_WALLPAPER}.
*/
@Deprecated
public abstract void setWallpaper(InputStream data) throws IOException;
/**
* @deprecated Use {@link android.app.WallpaperManager#clear
* WallpaperManager.clear()} instead.
*
This method requires the caller to hold the permission
* {@link android.Manifest.permission#SET_WALLPAPER}.
*/
@Deprecated
public abstract void clearWallpaper() throws IOException;
/**
* Same as {@link #startActivity(Intent, Bundle)} with no options
* specified.
*
* @param intent The description of the activity to start.
*
* @throws ActivityNotFoundException
*`
* @see #startActivity(Intent, Bundle)
* @see PackageManager#resolveActivity
*/
public abstract void startActivity(@RequiresPermission Intent intent);
/**
* Version of {@link #startActivity(Intent)} that allows you to specify the
* user the activity will be started for. This is not available to applications
* that are not pre-installed on the system image. Using it requires holding
* the INTERACT_ACROSS_USERS_FULL permission.
* @param intent The description of the activity to start.
* @param user The UserHandle of the user to start this activity for.
* @throws ActivityNotFoundException
* @hide
*/
public void startActivityAsUser(@RequiresPermission Intent intent, UserHandle user) {
throw new RuntimeException("Not implemented. Must override in a subclass.");
}
/**
* 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
* {@link android.app.Activity} Context, then the Intent must include
* the {@link 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 {@link ActivityNotFoundException}
* if there was no Activity found to run the given Intent.
*
* @param intent The description of the activity to start.
* @param options Additional options for how the Activity should be started.
* May be null if there are no options. See {@link android.app.ActivityOptions}
* for how to build the Bundle supplied here; there are no supported definitions
* for building it manually.
*
* @throws ActivityNotFoundException
*
* @see #startActivity(Intent)
* @see PackageManager#resolveActivity
*/
public abstract void startActivity(@RequiresPermission Intent intent,
@Nullable Bundle options);
/**
* Version of {@link #startActivity(Intent, Bundle)} that allows you to specify the
* user the activity will be started for. This is not available to applications
* that are not pre-installed on the system image. Using it requires holding
* the INTERACT_ACROSS_USERS_FULL permission.
* @param intent The description of the activity to start.
* @param options Additional options for how the Activity should be started.
* May be null if there are no options. See {@link android.app.ActivityOptions}
* for how to build the Bundle supplied here; there are no supported definitions
* for building it manually.
* @param userId The UserHandle of the user to start this activity for.
* @throws ActivityNotFoundException
* @hide
*/
public void startActivityAsUser(@RequiresPermission Intent intent, @Nullable Bundle options,
UserHandle userId) {
throw new RuntimeException("Not implemented. Must override in a subclass.");
}
/**
* Version of {@link #startActivity(Intent, Bundle)} that returns a result to the caller. This
* is only supported for Views and Fragments.
* @param who The identifier for the calling element that will receive the result.
* @param intent The intent to start.
* @param requestCode The code that will be returned with onActivityResult() identifying this
* request.
* @param options Additional options for how the Activity should be started.
* May be null if there are no options. See {@link android.app.ActivityOptions}
* for how to build the Bundle supplied here; there are no supported definitions
* for building it manually.
* @hide
*/
public void startActivityForResult(
@NonNull String who, Intent intent, int requestCode, @Nullable Bundle options) {
throw new RuntimeException("This method is only implemented for Activity-based Contexts. "
+ "Check canStartActivityForResult() before calling.");
}
/**
* Identifies whether this Context instance will be able to process calls to
* {@link #startActivityForResult(String, Intent, int, Bundle)}.
* @hide
*/
public boolean canStartActivityForResult() {
return false;
}
/**
* Same as {@link #startActivities(Intent[], Bundle)} with no options
* specified.
*
* @param intents An array of Intents to be started.
*
* @throws ActivityNotFoundException
*
* @see #startActivities(Intent[], Bundle)
* @see PackageManager#resolveActivity
*/
public abstract void startActivities(@RequiresPermission Intent[] intents);
/**
* Launch multiple new activities. This is generally the same as calling
* {@link #startActivity(Intent)} for the first Intent in the array,
* that activity during its creation calling {@link #startActivity(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 {@link 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.
*
* @param intents An array of Intents to be started.
* @param options Additional options for how the Activity should be started.
* See {@link android.content.Context#startActivity(Intent, Bundle)
* Context.startActivity(Intent, Bundle)} for more details.
*
* @throws ActivityNotFoundException
*
* @see #startActivities(Intent[])
* @see PackageManager#resolveActivity
*/
public abstract void startActivities(@RequiresPermission Intent[] intents, Bundle options);
/**
* @hide
* Launch multiple new activities. This is generally the same as calling
* {@link #startActivity(Intent)} for the first Intent in the array,
* that activity during its creation calling {@link #startActivity(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 {@link 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.
*
* @param intents An array of Intents to be started.
* @param options Additional options for how the Activity should be started.
* @param userHandle The user for whom to launch the activities
* See {@link android.content.Context#startActivity(Intent, Bundle)
* Context.startActivity(Intent, Bundle)} for more details.
*
* @throws ActivityNotFoundException
*
* @see #startActivities(Intent[])
* @see PackageManager#resolveActivity
*/
public void startActivitiesAsUser(Intent[] intents, Bundle options, UserHandle userHandle) {
throw new RuntimeException("Not implemented. Must override in a subclass.");
}
/**
* Same as {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)}
* with no options specified.
*
* @param intent The IntentSender to launch.
* @param fillInIntent If non-null, this will be provided as the
* intent parameter to {@link IntentSender#sendIntent}.
* @param flagsMask Intent flags in the original IntentSender that you
* would like to change.
* @param flagsValues Desired values for any bits set in
* flagsMask
* @param extraFlags Always set to 0.
*
* @see #startActivity(Intent)
* @see #startIntentSender(IntentSender, Intent, int, int, int, Bundle)
*/
public abstract void startIntentSender(IntentSender intent,
Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
throws IntentSender.SendIntentException;
/**
* Like {@link #startActivity(Intent, 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 {@link #startActivity(Intent)}
* here; otherwise, its associated action will be executed (such as
* sending a broadcast) as if you had called
* {@link IntentSender#sendIntent IntentSender.sendIntent} on it.
*
* @param intent The IntentSender to launch.
* @param fillInIntent If non-null, this will be provided as the
* intent parameter to {@link IntentSender#sendIntent}.
* @param flagsMask Intent flags in the original IntentSender that you
* would like to change.
* @param flagsValues Desired values for any bits set in
* flagsMask
* @param extraFlags Always set to 0.
* @param options Additional options for how the Activity should be started.
* See {@link android.content.Context#startActivity(Intent, Bundle)
* Context.startActivity(Intent, Bundle)} for more details. If options
* have also been supplied by the IntentSender, options given here will
* override any that conflict with those given by the IntentSender.
*
* @see #startActivity(Intent, Bundle)
* @see #startIntentSender(IntentSender, Intent, int, int, int)
*/
public abstract void startIntentSender(IntentSender intent,
@Nullable Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags,
Bundle options) throws IntentSender.SendIntentException;
/**
* 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
* {@link #sendOrderedBroadcast(Intent, String)}.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
*
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see #sendBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)
*/
public abstract void sendBroadcast(@RequiresPermission Intent intent);
/**
* 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
* {@link #sendOrderedBroadcast(Intent, String)}.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param receiverPermission (optional) String naming a permission that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
*
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see #sendBroadcast(Intent)
* @see #sendOrderedBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)
*/
public abstract void sendBroadcast(@RequiresPermission Intent intent,
@Nullable String receiverPermission);
/**
* Broadcast the given intent to all interested BroadcastReceivers, allowing
* an array of required permissions 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 {@link #sendOrderedBroadcast(Intent, String)}.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param receiverPermissions Array of names of permissions that a receiver must hold
* in order to receive your broadcast.
* If null or empty, no permissions are required.
*
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see #sendBroadcast(Intent)
* @see #sendOrderedBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)
* @hide
*/
public abstract void sendBroadcastMultiplePermissions(Intent intent,
String[] receiverPermissions);
/**
* 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
* {@link #sendOrderedBroadcast(Intent, String)}.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param receiverPermission (optional) String naming a permission that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
* @param options (optional) Additional sending options, generated from a
* {@link android.app.BroadcastOptions}.
*
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see #sendBroadcast(Intent)
* @see #sendOrderedBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)
* @hide
*/
@SystemApi
public abstract void sendBroadcast(Intent intent,
@Nullable String receiverPermission,
@Nullable Bundle options);
/**
* Like {@link #sendBroadcast(Intent, String)}, but also allows specification
* of an associated app op as per {@link android.app.AppOpsManager}.
* @hide
*/
public abstract void sendBroadcast(Intent intent,
String receiverPermission, int appOp);
/**
* 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 {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param receiverPermission (optional) String naming a permissions that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
*
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see #sendBroadcast(Intent)
* @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)
*/
public abstract void sendOrderedBroadcast(@RequiresPermission Intent intent,
@Nullable String receiverPermission);
/**
* Version of {@link #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
* {@link 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
* {@link #sendOrderedBroadcast(Intent, String)}.
*
*
Like {@link #sendBroadcast(Intent)}, this method is
* asynchronous; it will return before
* resultReceiver.onReceive() is called.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param receiverPermission String naming a permissions that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
* @param resultReceiver Your own BroadcastReceiver to treat as the final
* receiver of the broadcast.
* @param scheduler A custom Handler with which to schedule the
* resultReceiver callback; if null it will be
* scheduled in the Context's main thread.
* @param initialCode An initial value for the result code. Often
* Activity.RESULT_OK.
* @param initialData An initial value for the result data. Often
* null.
* @param initialExtras An initial value for the result extras. Often
* null.
*
* @see #sendBroadcast(Intent)
* @see #sendBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String)
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see android.app.Activity#RESULT_OK
*/
public abstract void sendOrderedBroadcast(@RequiresPermission @NonNull Intent intent,
@Nullable String receiverPermission, @Nullable BroadcastReceiver resultReceiver,
@Nullable Handler scheduler, int initialCode, @Nullable String initialData,
@Nullable Bundle initialExtras);
/**
* Version of {@link #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
* {@link 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
* {@link #sendOrderedBroadcast(Intent, String)}.
*
*
Like {@link #sendBroadcast(Intent)}, this method is
* asynchronous; it will return before
* resultReceiver.onReceive() is called.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param receiverPermission String naming a permissions that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
* @param options (optional) Additional sending options, generated from a
* {@link android.app.BroadcastOptions}.
* @param resultReceiver Your own BroadcastReceiver to treat as the final
* receiver of the broadcast.
* @param scheduler A custom Handler with which to schedule the
* resultReceiver callback; if null it will be
* scheduled in the Context's main thread.
* @param initialCode An initial value for the result code. Often
* Activity.RESULT_OK.
* @param initialData An initial value for the result data. Often
* null.
* @param initialExtras An initial value for the result extras. Often
* null.
* @see #sendBroadcast(Intent)
* @see #sendBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String)
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see android.app.Activity#RESULT_OK
* @hide
*/
@SystemApi
public abstract void sendOrderedBroadcast(@NonNull Intent intent,
@Nullable String receiverPermission, @Nullable Bundle options,
@Nullable BroadcastReceiver resultReceiver, @Nullable Handler scheduler,
int initialCode, @Nullable String initialData, @Nullable Bundle initialExtras);
/**
* Like {@link #sendOrderedBroadcast(Intent, String, BroadcastReceiver, android.os.Handler,
* int, String, android.os.Bundle)}, but also allows specification
* of an associated app op as per {@link android.app.AppOpsManager}.
* @hide
*/
public abstract void sendOrderedBroadcast(Intent intent,
String receiverPermission, int appOp, BroadcastReceiver resultReceiver,
Handler scheduler, int initialCode, String initialData,
Bundle initialExtras);
/**
* Version of {@link #sendBroadcast(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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
* @param intent The intent to broadcast
* @param user UserHandle to send the intent to.
* @see #sendBroadcast(Intent)
*/
public abstract void sendBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user);
/**
* Version of {@link #sendBroadcast(Intent, 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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param user UserHandle to send the intent to.
* @param receiverPermission (optional) String naming a permission that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
*
* @see #sendBroadcast(Intent, String)
*/
public abstract void sendBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user, @Nullable String receiverPermission);
/**
* Version of {@link #sendBroadcast(Intent, 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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param user UserHandle to send the intent to.
* @param receiverPermission (optional) String naming a permission that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
* @param appOp The app op associated with the broadcast.
*
* @see #sendBroadcast(Intent, String)
*
* @hide
*/
public abstract void sendBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user, @Nullable String receiverPermission, int appOp);
/**
* Version of
* {@link #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, 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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param user UserHandle to send the intent to.
* @param receiverPermission String naming a permissions that
* a receiver must hold in order to receive your broadcast.
* If null, no permission is required.
* @param resultReceiver Your own BroadcastReceiver to treat as the final
* receiver of the broadcast.
* @param scheduler A custom Handler with which to schedule the
* resultReceiver callback; if null it will be
* scheduled in the Context's main thread.
* @param initialCode An initial value for the result code. Often
* Activity.RESULT_OK.
* @param initialData An initial value for the result data. Often
* null.
* @param initialExtras An initial value for the result extras. Often
* null.
*
* @see #sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)
*/
public abstract void sendOrderedBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user, @Nullable String receiverPermission, BroadcastReceiver resultReceiver,
@Nullable Handler scheduler, int initialCode, @Nullable String initialData,
@Nullable Bundle initialExtras);
/**
* Similar to above but takes an appOp as well, to enforce restrictions.
* @see #sendOrderedBroadcastAsUser(Intent, UserHandle, String,
* BroadcastReceiver, Handler, int, String, Bundle)
* @hide
*/
public abstract void sendOrderedBroadcastAsUser(Intent intent, UserHandle user,
@Nullable String receiverPermission, int appOp, BroadcastReceiver resultReceiver,
@Nullable Handler scheduler, int initialCode, @Nullable String initialData,
@Nullable Bundle initialExtras);
/**
* Similar to above but takes an appOp as well, to enforce restrictions, and an options Bundle.
* @see #sendOrderedBroadcastAsUser(Intent, UserHandle, String,
* BroadcastReceiver, Handler, int, String, Bundle)
* @hide
*/
public abstract void sendOrderedBroadcastAsUser(Intent intent, UserHandle user,
@Nullable String receiverPermission, int appOp, @Nullable Bundle options,
BroadcastReceiver resultReceiver, @Nullable Handler scheduler, int initialCode,
@Nullable String initialData, @Nullable Bundle initialExtras);
/**
*
Perform a {@link #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 {@link #registerReceiver(BroadcastReceiver, IntentFilter)}. In
* all other ways, this behaves the same as
* {@link #sendBroadcast(Intent)}.
*
*
You must hold the {@link android.Manifest.permission#BROADCAST_STICKY}
* permission in order to use this API. If you do not hold that
* permission, {@link SecurityException} will be thrown.
*
* @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.
*
* @param 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 #sendBroadcast(Intent)
* @see #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle)
*/
@Deprecated
public abstract void sendStickyBroadcast(@RequiresPermission Intent intent);
/**
*
Version of {@link #sendStickyBroadcast} 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
* {@link 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
* {@link #sendOrderedBroadcast(Intent, String)}.
*
*
Like {@link #sendBroadcast(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 {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @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.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param resultReceiver Your own BroadcastReceiver to treat as the final
* receiver of the broadcast.
* @param scheduler A custom Handler with which to schedule the
* resultReceiver callback; if null it will be
* scheduled in the Context's main thread.
* @param initialCode An initial value for the result code. Often
* Activity.RESULT_OK.
* @param initialData An initial value for the result data. Often
* null.
* @param initialExtras An initial value for the result extras. Often
* null.
*
* @see #sendBroadcast(Intent)
* @see #sendBroadcast(Intent, String)
* @see #sendOrderedBroadcast(Intent, String)
* @see #sendStickyBroadcast(Intent)
* @see android.content.BroadcastReceiver
* @see #registerReceiver
* @see android.app.Activity#RESULT_OK
*/
@Deprecated
public abstract void sendStickyOrderedBroadcast(@RequiresPermission Intent intent,
BroadcastReceiver resultReceiver,
@Nullable Handler scheduler, int initialCode, @Nullable String initialData,
@Nullable Bundle initialExtras);
/**
*
Remove the data previously sent with {@link #sendStickyBroadcast},
* so that it is as if the sticky broadcast had never happened.
*
*
You must hold the {@link android.Manifest.permission#BROADCAST_STICKY}
* permission in order to use this API. If you do not hold that
* permission, {@link SecurityException} will be thrown.
*
* @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.
*
* @param intent The Intent that was previously broadcast.
*
* @see #sendStickyBroadcast
*/
@Deprecated
public abstract void removeStickyBroadcast(@RequiresPermission Intent intent);
/**
*
Version of {@link #sendStickyBroadcast(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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
*
* @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.
*
* @param 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.
* @param user UserHandle to send the intent to.
*
* @see #sendBroadcast(Intent)
*/
@Deprecated
public abstract void sendStickyBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user);
/**
* @hide
* This is just here for sending CONNECTIVITY_ACTION.
*/
@Deprecated
public abstract void sendStickyBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user, Bundle options);
/**
*
Version of
* {@link #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, 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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
*
*
See {@link BroadcastReceiver} for more information on Intent broadcasts.
*
* @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.
*
* @param intent The Intent to broadcast; all receivers matching this
* Intent will receive the broadcast.
* @param user UserHandle to send the intent to.
* @param resultReceiver Your own BroadcastReceiver to treat as the final
* receiver of the broadcast.
* @param scheduler A custom Handler with which to schedule the
* resultReceiver callback; if null it will be
* scheduled in the Context's main thread.
* @param initialCode An initial value for the result code. Often
* Activity.RESULT_OK.
* @param initialData An initial value for the result data. Often
* null.
* @param initialExtras An initial value for the result extras. Often
* null.
*
* @see #sendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, int, String, Bundle)
*/
@Deprecated
public abstract void sendStickyOrderedBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user, BroadcastReceiver resultReceiver,
@Nullable Handler scheduler, int initialCode, @Nullable String initialData,
@Nullable Bundle initialExtras);
/**
*
Version of {@link #removeStickyBroadcast(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. Using it requires holding
* the INTERACT_ACROSS_USERS permission.
*
*
You must hold the {@link android.Manifest.permission#BROADCAST_STICKY}
* permission in order to use this API. If you do not hold that
* permission, {@link SecurityException} will be thrown.
*
* @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.
*
* @param intent The Intent that was previously broadcast.
* @param user UserHandle to remove the sticky broadcast from.
*
* @see #sendStickyBroadcastAsUser
*/
@Deprecated
public abstract void removeStickyBroadcastAsUser(@RequiresPermission Intent intent,
UserHandle user);
/**
* 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 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 {@link BroadcastReceiver} for more information on Intent broadcasts.
*
*
As of {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH}, receivers
* registered with this method will correctly respect the
* {@link 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.
*
* Note: this method cannot be called from a
* {@link 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 {@link #registerReceiver}, since the lifetime of such a
* registered BroadcastReceiver is tied to the object that registered it.
*
* @param receiver The BroadcastReceiver to handle the broadcast.
* @param filter Selects the Intent broadcasts to be received.
*
* @return The first sticky intent found that matches filter,
* or null if there are none.
*
* @see #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler)
* @see #sendBroadcast
* @see #unregisterReceiver
*/
@Nullable
public abstract Intent registerReceiver(@Nullable BroadcastReceiver receiver,
IntentFilter filter);
/**
* Register to receive intent broadcasts, to run in the context of
* scheduler. See
* {@link #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 {@link BroadcastReceiver} for more information on Intent broadcasts.
*
*
As of {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH}, receivers
* registered with this method will correctly respect the
* {@link 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.
*
* @param receiver The BroadcastReceiver to handle the broadcast.
* @param filter Selects the Intent broadcasts to be received.
* @param broadcastPermission String naming a permissions that a
* broadcaster must hold in order to send an Intent to you. If null,
* no permission is required.
* @param scheduler Handler identifying the thread that will receive
* the Intent. If null, the main thread of the process will be used.
*
* @return The first sticky intent found that matches filter,
* or null if there are none.
*
* @see #registerReceiver(BroadcastReceiver, IntentFilter)
* @see #sendBroadcast
* @see #unregisterReceiver
*/
@Nullable
public abstract Intent registerReceiver(BroadcastReceiver receiver,
IntentFilter filter, @Nullable String broadcastPermission,
@Nullable Handler scheduler);
/**
* @hide
* Same as {@link #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler)
* but for a specific user. This receiver will receiver broadcasts that
* are sent to the requested user. It
* requires holding the {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL}
* permission.
*
* @param receiver The BroadcastReceiver to handle the broadcast.
* @param user UserHandle to send the intent to.
* @param filter Selects the Intent broadcasts to be received.
* @param broadcastPermission String naming a permissions that a
* broadcaster must hold in order to send an Intent to you. If null,
* no permission is required.
* @param scheduler Handler identifying the thread that will receive
* the Intent. If null, the main thread of the process will be used.
*
* @return The first sticky intent found that matches filter,
* or null if there are none.
*
* @see #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler)
* @see #sendBroadcast
* @see #unregisterReceiver
*/
@Nullable
public abstract Intent registerReceiverAsUser(BroadcastReceiver receiver,
UserHandle user, IntentFilter filter, @Nullable String broadcastPermission,
@Nullable Handler scheduler);
/**
* Unregister a previously registered BroadcastReceiver. All
* filters that have been registered for this BroadcastReceiver will be
* removed.
*
* @param receiver The BroadcastReceiver to unregister.
*
* @see #registerReceiver
*/
public abstract void unregisterReceiver(BroadcastReceiver receiver);
/**
* Request that a given application service be started. The Intent
* should contain 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 log a warning about this and which of the
* multiple matching services it finds and uses will be undefined. 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 {@link android.app.Service#onStartCommand} 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 {@link #bindService}: it requires the service to remain
* running until {@link #stopService} 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 {@link #stopService} 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 {@link 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 {@link #bindService bound services}
* for high frequency calls.
*
*
* @param service Identifies the service to be started. The Intent must be either
* fully explicit (supplying a component name) or specify a specific package
* name it is targetted to. Additional values
* may be included in the Intent extras to supply arguments along with
* this specific start call.
*
* @return If the service is being started or is already running, the
* {@link ComponentName} of the actual service that was started is
* returned; else if the service does not exist null is returned.
*
* @throws SecurityException
*
* @see #stopService
* @see #bindService
*/
@Nullable
public abstract ComponentName startService(Intent service);
/**
* 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 {@link ServiceConnection}
* objects bound to it with the {@link #BIND_AUTO_CREATE} set, it will
* not be destroyed until all of these bindings are removed. See
* the {@link android.app.Service} documentation for more details on a
* service's lifecycle.
*
*
This function will throw {@link SecurityException} if you do not
* have permission to stop the given service.
*
* @param service 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 targetted to.
*
* @return If there is a service matching the given Intent that is already
* running, then it is stopped and {@code true} is returned; else {@code false} is returned.
*
* @throws SecurityException
*
* @see #startService
*/
public abstract boolean stopService(Intent service);
/**
* @hide like {@link #startService(Intent)} but for a specific user.
*/
public abstract ComponentName startServiceAsUser(Intent service, UserHandle user);
/**
* @hide like {@link #stopService(Intent)} but for a specific user.
*/
public abstract boolean stopServiceAsUser(Intent service, UserHandle user);
/**
* 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 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.
*
*
This function will throw {@link SecurityException} if you do not
* have permission to bind to the given service.
*
*
Note: this method can not be called from a
* {@link BroadcastReceiver} component. A pattern you can use to
* communicate from a BroadcastReceiver to a Service is to call
* {@link #startService} with the arguments containing the command to be
* sent, with the service calling its
* {@link android.app.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
* {@link #registerReceiver}, since the lifetime of this BroadcastReceiver
* is tied to another object (the one that registered it).
*
* @param 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
* {@link IntentFilter} published by a service.
* @param conn Receives information as the service is started and stopped.
* This must be a valid ServiceConnection object; it must not be null.
* @param flags Operation options for the binding. May be 0,
* {@link #BIND_AUTO_CREATE}, {@link #BIND_DEBUG_UNBIND},
* {@link #BIND_NOT_FOREGROUND}, {@link #BIND_ABOVE_CLIENT},
* {@link #BIND_ALLOW_OOM_MANAGEMENT}, or
* {@link #BIND_WAIVE_PRIORITY}.
* @return If you have successfully bound to the service, {@code true} is returned;
* {@code false} is returned if the connection is not made so you will not
* receive the service object.
*
* @throws SecurityException
*
* @see #unbindService
* @see #startService
* @see #BIND_AUTO_CREATE
* @see #BIND_DEBUG_UNBIND
* @see #BIND_NOT_FOREGROUND
*/
public abstract boolean bindService(@RequiresPermission Intent service,
@NonNull ServiceConnection conn, @BindServiceFlags int flags);
/**
* Same as {@link #bindService(Intent, ServiceConnection, int)}, but with an explicit userHandle
* argument for use by system server and other multi-user aware code.
* @hide
*/
@SystemApi
@SuppressWarnings("unused")
public boolean bindServiceAsUser(@RequiresPermission Intent service, ServiceConnection conn,
int flags, UserHandle user) {
throw new RuntimeException("Not implemented. Must override in a subclass.");
}
/**
* Same as {@link #bindService(Intent, ServiceConnection, int, UserHandle)}, but with an
* explicit non-null Handler to run the ServiceConnection callbacks on.
*
* @hide
*/
public boolean bindServiceAsUser(Intent service, ServiceConnection conn, int flags,
Handler handler, UserHandle user) {
throw new RuntimeException("Not implemented. Must override in a subclass.");
}
/**
* 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.
*
* @param conn The connection interface previously supplied to
* bindService(). This parameter must not be null.
*
* @see #bindService
*/
public abstract void unbindService(@NonNull ServiceConnection conn);
/**
* Start executing an {@link android.app.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).
*
* @param className Name of the Instrumentation component to be run.
* @param profileFile Optional path to write profiling data as the
* instrumentation runs, or null for no profiling.
* @param arguments Additional optional arguments to pass to the
* instrumentation, or null.
*
* @return {@code true} if the instrumentation was successfully started,
* else {@code false} if it could not be found.
*/
public abstract boolean startInstrumentation(@NonNull ComponentName className,
@Nullable String profileFile, @Nullable Bundle arguments);
/** @hide */
@StringDef({
POWER_SERVICE,
WINDOW_SERVICE,
LAYOUT_INFLATER_SERVICE,
ACCOUNT_SERVICE,
ACTIVITY_SERVICE,
ALARM_SERVICE,
NOTIFICATION_SERVICE,
ACCESSIBILITY_SERVICE,
CAPTIONING_SERVICE,
KEYGUARD_SERVICE,
LOCATION_SERVICE,
//@hide: COUNTRY_DETECTOR,
SEARCH_SERVICE,
SENSOR_SERVICE,
STORAGE_SERVICE,
WALLPAPER_SERVICE,
VIBRATOR_SERVICE,
//@hide: STATUS_BAR_SERVICE,
CONNECTIVITY_SERVICE,
//@hide: UPDATE_LOCK_SERVICE,
//@hide: NETWORKMANAGEMENT_SERVICE,
NETWORK_STATS_SERVICE,
//@hide: NETWORK_POLICY_SERVICE,
WIFI_SERVICE,
WIFI_NAN_SERVICE,
WIFI_P2P_SERVICE,
WIFI_SCANNING_SERVICE,
//@hide: WIFI_RTT_SERVICE,
//@hide: ETHERNET_SERVICE,
WIFI_RTT_SERVICE,
NSD_SERVICE,
AUDIO_SERVICE,
FINGERPRINT_SERVICE,
MEDIA_ROUTER_SERVICE,
TELEPHONY_SERVICE,
TELEPHONY_SUBSCRIPTION_SERVICE,
CARRIER_CONFIG_SERVICE,
TELECOM_SERVICE,
CLIPBOARD_SERVICE,
INPUT_METHOD_SERVICE,
TEXT_SERVICES_MANAGER_SERVICE,
APPWIDGET_SERVICE,
//@hide: VOICE_INTERACTION_MANAGER_SERVICE,
//@hide: BACKUP_SERVICE,
DROPBOX_SERVICE,
//@hide: DEVICE_IDLE_CONTROLLER,
DEVICE_POLICY_SERVICE,
UI_MODE_SERVICE,
DOWNLOAD_SERVICE,
NFC_SERVICE,
BLUETOOTH_SERVICE,
//@hide: SIP_SERVICE,
USB_SERVICE,
LAUNCHER_APPS_SERVICE,
//@hide: SERIAL_SERVICE,
//@hide: HDMI_CONTROL_SERVICE,
INPUT_SERVICE,
DISPLAY_SERVICE,
USER_SERVICE,
RESTRICTIONS_SERVICE,
APP_OPS_SERVICE,
CAMERA_SERVICE,
PRINT_SERVICE,
CONSUMER_IR_SERVICE,
//@hide: TRUST_SERVICE,
TV_INPUT_SERVICE,
//@hide: NETWORK_SCORE_SERVICE,
USAGE_STATS_SERVICE,
MEDIA_SESSION_SERVICE,
BATTERY_SERVICE,
JOB_SCHEDULER_SERVICE,
//@hide: PERSISTENT_DATA_BLOCK_SERVICE,
MEDIA_PROJECTION_SERVICE,
MIDI_SERVICE,
RADIO_SERVICE,
HARDWARE_PROPERTIES_SERVICE,
//@hide: SOUND_TRIGGER_SERVICE,
SHORTCUT_SERVICE,
//@hide: CONTEXTHUB_SERVICE,
})
@Retention(RetentionPolicy.SOURCE)
public @interface ServiceName {}
/**
* 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:
*
*
* - {@link #WINDOW_SERVICE} ("window")
*
- The top-level window manager in which you can place custom
* windows. The returned object is a {@link android.view.WindowManager}.
*
- {@link #LAYOUT_INFLATER_SERVICE} ("layout_inflater")
*
- A {@link android.view.LayoutInflater} for inflating layout resources
* in this context.
*
- {@link #ACTIVITY_SERVICE} ("activity")
*
- A {@link android.app.ActivityManager} for interacting with the
* global activity state of the system.
*
- {@link #POWER_SERVICE} ("power")
*
- A {@link android.os.PowerManager} for controlling power
* management.
*
- {@link #ALARM_SERVICE} ("alarm")
*
- A {@link android.app.AlarmManager} for receiving intents at the
* time of your choosing.
*
- {@link #NOTIFICATION_SERVICE} ("notification")
*
- A {@link android.app.NotificationManager} for informing the user
* of background events.
*
- {@link #KEYGUARD_SERVICE} ("keyguard")
*
- A {@link android.app.KeyguardManager} for controlling keyguard.
*
- {@link #LOCATION_SERVICE} ("location")
*
- A {@link android.location.LocationManager} for controlling location
* (e.g., GPS) updates.
*
- {@link #SEARCH_SERVICE} ("search")
*
- A {@link android.app.SearchManager} for handling search.
*
- {@link #VIBRATOR_SERVICE} ("vibrator")
*
- A {@link android.os.Vibrator} for interacting with the vibrator
* hardware.
*
- {@link #CONNECTIVITY_SERVICE} ("connection")
*
- A {@link android.net.ConnectivityManager ConnectivityManager} for
* handling management of network connections.
*
- {@link #WIFI_SERVICE} ("wifi")
*
- A {@link android.net.wifi.WifiManager WifiManager} for management of
* Wi-Fi connectivity.
*
- {@link #WIFI_P2P_SERVICE} ("wifip2p")
*
- A {@link android.net.wifi.p2p.WifiP2pManager WifiP2pManager} for management of
* Wi-Fi Direct connectivity.
*
- {@link #INPUT_METHOD_SERVICE} ("input_method")
*
- An {@link android.view.inputmethod.InputMethodManager InputMethodManager}
* for management of input methods.
*
- {@link #UI_MODE_SERVICE} ("uimode")
*
- An {@link android.app.UiModeManager} for controlling UI modes.
*
- {@link #DOWNLOAD_SERVICE} ("download")
*
- A {@link android.app.DownloadManager} for requesting HTTP downloads
*
- {@link #BATTERY_SERVICE} ("batterymanager")
*
- A {@link android.os.BatteryManager} for managing battery state
*
- {@link #JOB_SCHEDULER_SERVICE} ("taskmanager")
*
- A {@link android.app.job.JobScheduler} for managing scheduled tasks
*
- {@link #NETWORK_STATS_SERVICE} ("netstats")
*
- A {@link android.app.usage.NetworkStatsManager NetworkStatsManager} for querying network
* usage statistics.
*
- {@link #HARDWARE_PROPERTIES_SERVICE} ("hardware_properties")
*
- A {@link android.os.HardwarePropertiesManager} for accessing hardware properties.
*
*
* Note: System services obtained via this API may be closely associated with
* the Context in which they are obtained from. In general, do not share the
* service objects between various different contexts (Activities, Applications,
* Services, Providers, etc.)
*
* @param name The name of the desired service.
*
* @return The service or null if the name does not exist.
*
* @see #WINDOW_SERVICE
* @see android.view.WindowManager
* @see #LAYOUT_INFLATER_SERVICE
* @see android.view.LayoutInflater
* @see #ACTIVITY_SERVICE
* @see android.app.ActivityManager
* @see #POWER_SERVICE
* @see android.os.PowerManager
* @see #ALARM_SERVICE
* @see android.app.AlarmManager
* @see #NOTIFICATION_SERVICE
* @see android.app.NotificationManager
* @see #KEYGUARD_SERVICE
* @see android.app.KeyguardManager
* @see #LOCATION_SERVICE
* @see android.location.LocationManager
* @see #SEARCH_SERVICE
* @see android.app.SearchManager
* @see #SENSOR_SERVICE
* @see android.hardware.SensorManager
* @see #STORAGE_SERVICE
* @see android.os.storage.StorageManager
* @see #VIBRATOR_SERVICE
* @see android.os.Vibrator
* @see #CONNECTIVITY_SERVICE
* @see android.net.ConnectivityManager
* @see #WIFI_SERVICE
* @see android.net.wifi.WifiManager
* @see #AUDIO_SERVICE
* @see android.media.AudioManager
* @see #MEDIA_ROUTER_SERVICE
* @see android.media.MediaRouter
* @see #TELEPHONY_SERVICE
* @see android.telephony.TelephonyManager
* @see #TELEPHONY_SUBSCRIPTION_SERVICE
* @see android.telephony.SubscriptionManager
* @see #CARRIER_CONFIG_SERVICE
* @see android.telephony.CarrierConfigManager
* @see #INPUT_METHOD_SERVICE
* @see android.view.inputmethod.InputMethodManager
* @see #UI_MODE_SERVICE
* @see android.app.UiModeManager
* @see #DOWNLOAD_SERVICE
* @see android.app.DownloadManager
* @see #BATTERY_SERVICE
* @see android.os.BatteryManager
* @see #JOB_SCHEDULER_SERVICE
* @see android.app.job.JobScheduler
* @see #NETWORK_STATS_SERVICE
* @see android.app.usage.NetworkStatsManager
* @see android.os.HardwarePropertiesManager
* @see #HARDWARE_PROPERTIES_SERVICE
*/
public abstract Object getSystemService(@ServiceName @NonNull String name);
/**
* Return the handle to a system-level service by class.
*
* Currently available classes are:
* {@link android.view.WindowManager}, {@link android.view.LayoutInflater},
* {@link android.app.ActivityManager}, {@link android.os.PowerManager},
* {@link android.app.AlarmManager}, {@link android.app.NotificationManager},
* {@link android.app.KeyguardManager}, {@link android.location.LocationManager},
* {@link android.app.SearchManager}, {@link android.os.Vibrator},
* {@link android.net.ConnectivityManager},
* {@link android.net.wifi.WifiManager},
* {@link android.media.AudioManager}, {@link android.media.MediaRouter},
* {@link android.telephony.TelephonyManager}, {@link android.telephony.SubscriptionManager},
* {@link android.view.inputmethod.InputMethodManager},
* {@link android.app.UiModeManager}, {@link android.app.DownloadManager},
* {@link android.os.BatteryManager}, {@link android.app.job.JobScheduler},
* {@link android.app.usage.NetworkStatsManager}.
*
* 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.)
*
*
* @param serviceClass The class of the desired service.
* @return The service or null if the class is not a supported system service.
*/
@SuppressWarnings("unchecked")
public final T getSystemService(Class serviceClass) {
// Because subclasses may override getSystemService(String) we cannot
// perform a lookup by class alone. We must first map the class to its
// service name then invoke the string-based method.
String serviceName = getSystemServiceName(serviceClass);
return serviceName != null ? (T)getSystemService(serviceName) : null;
}
/**
* Gets the name of the system-level service that is represented by the specified class.
*
* @param serviceClass The class of the desired service.
* @return The service name or null if the class is not a supported system service.
*/
public abstract String getSystemServiceName(Class serviceClass);
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.PowerManager} for controlling power management,
* including "wake locks," which let you keep the device on while
* you're running long tasks.
*/
public static final String POWER_SERVICE = "power";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.RecoverySystem} for accessing the recovery system
* service.
*
* @see #getSystemService
* @hide
*/
public static final String RECOVERY_SERVICE = "recovery";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.view.WindowManager} for accessing the system's window
* manager.
*
* @see #getSystemService
* @see android.view.WindowManager
*/
public static final String WINDOW_SERVICE = "window";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.view.LayoutInflater} for inflating layout resources in this
* context.
*
* @see #getSystemService
* @see android.view.LayoutInflater
*/
public static final String LAYOUT_INFLATER_SERVICE = "layout_inflater";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.accounts.AccountManager} for receiving intents at a
* time of your choosing.
*
* @see #getSystemService
* @see android.accounts.AccountManager
*/
public static final String ACCOUNT_SERVICE = "account";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.ActivityManager} for interacting with the global
* system state.
*
* @see #getSystemService
* @see android.app.ActivityManager
*/
public static final String ACTIVITY_SERVICE = "activity";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.AlarmManager} for receiving intents at a
* time of your choosing.
*
* @see #getSystemService
* @see android.app.AlarmManager
*/
public static final String ALARM_SERVICE = "alarm";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.NotificationManager} for informing the user of
* background events.
*
* @see #getSystemService
* @see android.app.NotificationManager
*/
public static final String NOTIFICATION_SERVICE = "notification";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.view.accessibility.AccessibilityManager} for giving the user
* feedback for UI events through the registered event listeners.
*
* @see #getSystemService
* @see android.view.accessibility.AccessibilityManager
*/
public static final String ACCESSIBILITY_SERVICE = "accessibility";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.view.accessibility.CaptioningManager} for obtaining
* captioning properties and listening for changes in captioning
* preferences.
*
* @see #getSystemService
* @see android.view.accessibility.CaptioningManager
*/
public static final String CAPTIONING_SERVICE = "captioning";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.NotificationManager} for controlling keyguard.
*
* @see #getSystemService
* @see android.app.KeyguardManager
*/
public static final String KEYGUARD_SERVICE = "keyguard";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.location.LocationManager} for controlling location
* updates.
*
* @see #getSystemService
* @see android.location.LocationManager
*/
public static final String LOCATION_SERVICE = "location";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.location.CountryDetector} for detecting the country that
* the user is in.
*
* @hide
*/
public static final String COUNTRY_DETECTOR = "country_detector";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.app.SearchManager} for handling searches.
*
* @see #getSystemService
* @see android.app.SearchManager
*/
public static final String SEARCH_SERVICE = "search";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.hardware.SensorManager} for accessing sensors.
*
* @see #getSystemService
* @see android.hardware.SensorManager
*/
public static final String SENSOR_SERVICE = "sensor";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.os.storage.StorageManager} for accessing system storage
* functions.
*
* @see #getSystemService
* @see android.os.storage.StorageManager
*/
public static final String STORAGE_SERVICE = "storage";
/**
* Use with {@link #getSystemService} to retrieve a
* com.android.server.WallpaperService for accessing wallpapers.
*
* @see #getSystemService
*/
public static final String WALLPAPER_SERVICE = "wallpaper";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.os.Vibrator} for interacting with the vibration hardware.
*
* @see #getSystemService
* @see android.os.Vibrator
*/
public static final String VIBRATOR_SERVICE = "vibrator";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.app.StatusBarManager} for interacting with the status bar.
*
* @see #getSystemService
* @see android.app.StatusBarManager
* @hide
*/
public static final String STATUS_BAR_SERVICE = "statusbar";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.ConnectivityManager} for handling management of
* network connections.
*
* @see #getSystemService
* @see android.net.ConnectivityManager
*/
public static final String CONNECTIVITY_SERVICE = "connectivity";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.os.IUpdateLock} for managing runtime sequences that
* must not be interrupted by headless OTA application or similar.
*
* @hide
* @see #getSystemService
* @see android.os.UpdateLock
*/
public static final String UPDATE_LOCK_SERVICE = "updatelock";
/**
* Constant for the internal network management service, not really a Context service.
* @hide
*/
public static final String NETWORKMANAGEMENT_SERVICE = "network_management";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.app.usage.NetworkStatsManager} for querying network usage stats.
*
* @see #getSystemService
* @see android.app.usage.NetworkStatsManager
*/
public static final String NETWORK_STATS_SERVICE = "netstats";
/** {@hide} */
public static final String NETWORK_POLICY_SERVICE = "netpolicy";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.wifi.WifiManager} for handling management of
* Wi-Fi access.
*
* @see #getSystemService
* @see android.net.wifi.WifiManager
*/
public static final String WIFI_SERVICE = "wifi";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.wifi.p2p.WifiP2pManager} for handling management of
* Wi-Fi peer-to-peer connections.
*
* @see #getSystemService
* @see android.net.wifi.p2p.WifiP2pManager
*/
public static final String WIFI_P2P_SERVICE = "wifip2p";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.net.wifi.nan.WifiNanManager} for handling management of
* Wi-Fi NAN discovery and connections.
*
* @see #getSystemService
* @see android.net.wifi.nan.WifiNanManager
* @hide PROPOSED_NAN_API
*/
public static final String WIFI_NAN_SERVICE = "wifinan";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.wifi.WifiScanner} for scanning the wifi universe
*
* @see #getSystemService
* @see android.net.wifi.WifiScanner
* @hide
*/
@SystemApi
public static final String WIFI_SCANNING_SERVICE = "wifiscanner";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.wifi.RttManager} for ranging devices with wifi
*
* @see #getSystemService
* @see android.net.wifi.RttManager
* @hide
*/
@SystemApi
public static final String WIFI_RTT_SERVICE = "rttmanager";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.EthernetManager} for handling management of
* Ethernet access.
*
* @see #getSystemService
* @see android.net.EthernetManager
*
* @hide
*/
public static final String ETHERNET_SERVICE = "ethernet";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.net.nsd.NsdManager} for handling management of network service
* discovery
*
* @see #getSystemService
* @see android.net.nsd.NsdManager
*/
public static final String NSD_SERVICE = "servicediscovery";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.media.AudioManager} for handling management of volume,
* ringer modes and audio routing.
*
* @see #getSystemService
* @see android.media.AudioManager
*/
public static final String AUDIO_SERVICE = "audio";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.fingerprint.FingerprintManager} for handling management
* of fingerprints.
*
* @see #getSystemService
* @see android.hardware.fingerprint.FingerprintManager
*/
public static final String FINGERPRINT_SERVICE = "fingerprint";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.media.MediaRouter} for controlling and managing
* routing of media.
*
* @see #getSystemService
* @see android.media.MediaRouter
*/
public static final String MEDIA_ROUTER_SERVICE = "media_router";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.media.session.MediaSessionManager} for managing media Sessions.
*
* @see #getSystemService
* @see android.media.session.MediaSessionManager
*/
public static final String MEDIA_SESSION_SERVICE = "media_session";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.telephony.TelephonyManager} for handling management the
* telephony features of the device.
*
* @see #getSystemService
* @see android.telephony.TelephonyManager
*/
public static final String TELEPHONY_SERVICE = "phone";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.telephony.SubscriptionManager} for handling management the
* telephony subscriptions of the device.
*
* @see #getSystemService
* @see android.telephony.SubscriptionManager
*/
public static final String TELEPHONY_SUBSCRIPTION_SERVICE = "telephony_subscription_service";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.telecom.TelecomManager} to manage telecom-related features
* of the device.
*
* @see #getSystemService
* @see android.telecom.TelecomManager
*/
public static final String TELECOM_SERVICE = "telecom";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.telephony.CarrierConfigManager} for reading carrier configuration values.
*
* @see #getSystemService
* @see android.telephony.CarrierConfigManager
*/
public static final String CARRIER_CONFIG_SERVICE = "carrier_config";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.text.ClipboardManager} for accessing and modifying
* {@link android.content.ClipboardManager} for accessing and modifying
* the contents of the global clipboard.
*
* @see #getSystemService
* @see android.content.ClipboardManager
*/
public static final String CLIPBOARD_SERVICE = "clipboard";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.view.inputmethod.InputMethodManager} for accessing input
* methods.
*
* @see #getSystemService
*/
public static final String INPUT_METHOD_SERVICE = "input_method";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.view.textservice.TextServicesManager} for accessing
* text services.
*
* @see #getSystemService
*/
public static final String TEXT_SERVICES_MANAGER_SERVICE = "textservices";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.appwidget.AppWidgetManager} for accessing AppWidgets.
*
* @see #getSystemService
*/
public static final String APPWIDGET_SERVICE = "appwidget";
/**
* Official published name of the (internal) voice interaction manager service.
*
* @hide
* @see #getSystemService
*/
public static final String VOICE_INTERACTION_MANAGER_SERVICE = "voiceinteraction";
/**
* Use with {@link #getSystemService} to access the
* {@link com.android.server.voiceinteraction.SoundTriggerService}.
*
* @hide
* @see #getSystemService
*/
public static final String SOUND_TRIGGER_SERVICE = "soundtrigger";
/**
* Use with {@link #getSystemService} to retrieve an
* {@link android.app.backup.IBackupManager IBackupManager} for communicating
* with the backup mechanism.
* @hide
*
* @see #getSystemService
*/
@SystemApi
public static final String BACKUP_SERVICE = "backup";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.DropBoxManager} instance for recording
* diagnostic logs.
* @see #getSystemService
*/
public static final String DROPBOX_SERVICE = "dropbox";
/**
* System service name for the DeviceIdleController. There is no Java API for this.
* @see #getSystemService
* @hide
*/
public static final String DEVICE_IDLE_CONTROLLER = "deviceidle";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.admin.DevicePolicyManager} for working with global
* device policy management.
*
* @see #getSystemService
*/
public static final String DEVICE_POLICY_SERVICE = "device_policy";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.UiModeManager} for controlling UI modes.
*
* @see #getSystemService
*/
public static final String UI_MODE_SERVICE = "uimode";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.DownloadManager} for requesting HTTP downloads.
*
* @see #getSystemService
*/
public static final String DOWNLOAD_SERVICE = "download";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.BatteryManager} for managing battery state.
*
* @see #getSystemService
*/
public static final String BATTERY_SERVICE = "batterymanager";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.nfc.NfcManager} for using NFC.
*
* @see #getSystemService
*/
public static final String NFC_SERVICE = "nfc";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.bluetooth.BluetoothManager} for using Bluetooth.
*
* @see #getSystemService
*/
public static final String BLUETOOTH_SERVICE = "bluetooth";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.net.sip.SipManager} for accessing the SIP related service.
*
* @see #getSystemService
*/
/** @hide */
public static final String SIP_SERVICE = "sip";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.hardware.usb.UsbManager} for access to USB devices (as a USB host)
* and for controlling this device's behavior as a USB device.
*
* @see #getSystemService
* @see android.hardware.usb.UsbManager
*/
public static final String USB_SERVICE = "usb";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.hardware.SerialManager} for access to serial ports.
*
* @see #getSystemService
* @see android.hardware.SerialManager
*
* @hide
*/
public static final String SERIAL_SERVICE = "serial";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.hdmi.HdmiControlManager} for controlling and managing
* HDMI-CEC protocol.
*
* @see #getSystemService
* @see android.hardware.hdmi.HdmiControlManager
* @hide
*/
@SystemApi
public static final String HDMI_CONTROL_SERVICE = "hdmi_control";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.input.InputManager} for interacting with input devices.
*
* @see #getSystemService
* @see android.hardware.input.InputManager
*/
public static final String INPUT_SERVICE = "input";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.display.DisplayManager} for interacting with display devices.
*
* @see #getSystemService
* @see android.hardware.display.DisplayManager
*/
public static final String DISPLAY_SERVICE = "display";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.UserManager} for managing users on devices that support multiple users.
*
* @see #getSystemService
* @see android.os.UserManager
*/
public static final String USER_SERVICE = "user";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.content.pm.LauncherApps} for querying and monitoring launchable apps across
* profiles of a user.
*
* @see #getSystemService
* @see android.content.pm.LauncherApps
*/
public static final String LAUNCHER_APPS_SERVICE = "launcherapps";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.content.RestrictionsManager} for retrieving application restrictions
* and requesting permissions for restricted operations.
* @see #getSystemService
* @see android.content.RestrictionsManager
*/
public static final String RESTRICTIONS_SERVICE = "restrictions";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.app.AppOpsManager} for tracking application operations
* on the device.
*
* @see #getSystemService
* @see android.app.AppOpsManager
*/
public static final String APP_OPS_SERVICE = "appops";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.camera2.CameraManager} for interacting with
* camera devices.
*
* @see #getSystemService
* @see android.hardware.camera2.CameraManager
*/
public static final String CAMERA_SERVICE = "camera";
/**
* {@link android.print.PrintManager} for printing and managing
* printers and print tasks.
*
* @see #getSystemService
* @see android.print.PrintManager
*/
public static final String PRINT_SERVICE = "print";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.ConsumerIrManager} for transmitting infrared
* signals from the device.
*
* @see #getSystemService
* @see android.hardware.ConsumerIrManager
*/
public static final String CONSUMER_IR_SERVICE = "consumer_ir";
/**
* {@link android.app.trust.TrustManager} for managing trust agents.
* @see #getSystemService
* @see android.app.trust.TrustManager
* @hide
*/
public static final String TRUST_SERVICE = "trust";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.media.tv.TvInputManager} for interacting with TV inputs
* on the device.
*
* @see #getSystemService
* @see android.media.tv.TvInputManager
*/
public static final String TV_INPUT_SERVICE = "tv_input";
/**
* {@link android.net.NetworkScoreManager} for managing network scoring.
* @see #getSystemService
* @see android.net.NetworkScoreManager
* @hide
*/
@SystemApi
public static final String NETWORK_SCORE_SERVICE = "network_score";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.app.usage.UsageStatsManager} for querying device usage stats.
*
* @see #getSystemService
* @see android.app.usage.UsageStatsManager
*/
public static final String USAGE_STATS_SERVICE = "usagestats";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.app.job.JobScheduler} instance for managing occasional
* background tasks.
* @see #getSystemService
* @see android.app.job.JobScheduler
*/
public static final String JOB_SCHEDULER_SERVICE = "jobscheduler";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.service.persistentdata.PersistentDataBlockManager} instance
* for interacting with a storage device that lives across factory resets.
*
* @see #getSystemService
* @see android.service.persistentdata.PersistentDataBlockManager
* @hide
*/
@SystemApi
public static final String PERSISTENT_DATA_BLOCK_SERVICE = "persistent_data_block";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.media.projection.MediaProjectionManager} instance for managing
* media projection sessions.
* @see #getSystemService
* @see android.media.projection.MediaProjectionManager
*/
public static final String MEDIA_PROJECTION_SERVICE = "media_projection";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.media.midi.MidiManager} for accessing the MIDI service.
*
* @see #getSystemService
*/
public static final String MIDI_SERVICE = "midi";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.hardware.radio.RadioManager} for accessing the broadcast radio service.
*
* @see #getSystemService
* @hide
*/
public static final String RADIO_SERVICE = "radio";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.HardwarePropertiesManager} for accessing the hardware properties service.
*
* @see #getSystemService
*/
public static final String HARDWARE_PROPERTIES_SERVICE = "hardware_properties";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.content.pm.ShortcutManager} for accessing the launcher shortcut service.
*
* @see #getSystemService
* @see android.content.pm.ShortcutManager
*/
public static final String SHORTCUT_SERVICE = "shortcut";
/**
* Use with {@link #getSystemService} to retrieve a {@link
* android.hardware.location.ContextHubManager} for accessing context hubs.
*
* @see #getSystemService
* @see android.hardware.location.ContextHubManager
*
* @hide
*/
@SystemApi
public static final String CONTEXTHUB_SERVICE = "contexthub";
/**
* Use with {@link #getSystemService} to retrieve a
* {@link android.os.health.SystemHealthManager} for accessing system health (battery, power,
* memory, etc) metrics.
*
* @see #getSystemService
*/
public static final String SYSTEM_HEALTH_SERVICE = "systemhealth";
/**
* Gatekeeper Service.
* @hide
*/
public static final String GATEKEEPER_SERVICE = "android.service.gatekeeper.IGateKeeperService";
/**
* Determine whether the given permission is allowed for a particular
* process and user ID running in the system.
*
* @param permission The name of the permission being checked.
* @param pid The process ID being checked against. Must be > 0.
* @param uid The user ID being checked against. A uid of 0 is the root
* user, which will pass every permission check.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the given
* pid/uid is allowed that permission, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*
* @see PackageManager#checkPermission(String, String)
* @see #checkCallingPermission
*/
@CheckResult(suggest="#enforcePermission(String,int,int,String)")
@PackageManager.PermissionResult
public abstract int checkPermission(@NonNull String permission, int pid, int uid);
/** @hide */
@PackageManager.PermissionResult
public abstract int checkPermission(@NonNull String permission, int pid, int uid,
IBinder callerToken);
/**
* Determine whether the calling process of an IPC you are handling has been
* granted a particular permission. This is basically the same as calling
* {@link #checkPermission(String, int, int)} with the pid and uid returned
* by {@link android.os.Binder#getCallingPid} and
* {@link android.os.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 {@link #checkCallingOrSelfPermission}
* to avoid this protection.
*
* @param permission The name of the permission being checked.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the calling
* pid/uid is allowed that permission, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*
* @see PackageManager#checkPermission(String, String)
* @see #checkPermission
* @see #checkCallingOrSelfPermission
*/
@CheckResult(suggest="#enforceCallingPermission(String,String)")
@PackageManager.PermissionResult
public abstract int checkCallingPermission(@NonNull String permission);
/**
* Determine whether the calling process of an IPC or you have been
* granted a particular permission. This is the same as
* {@link #checkCallingPermission}, except it grants your own permissions
* if you are not currently processing an IPC. Use with care!
*
* @param permission The name of the permission being checked.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the calling
* pid/uid is allowed that permission, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*
* @see PackageManager#checkPermission(String, String)
* @see #checkPermission
* @see #checkCallingPermission
*/
@CheckResult(suggest="#enforceCallingOrSelfPermission(String,String)")
@PackageManager.PermissionResult
public abstract int checkCallingOrSelfPermission(@NonNull String permission);
/**
* Determine whether you have been granted a particular permission.
*
* @param permission The name of the permission being checked.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if you have the
* permission, or {@link PackageManager#PERMISSION_DENIED} if not.
*
* @see PackageManager#checkPermission(String, String)
* @see #checkCallingPermission(String)
*/
@PackageManager.PermissionResult
public abstract int checkSelfPermission(@NonNull String permission);
/**
* If the given permission is not allowed for a particular process
* and user ID running in the system, throw a {@link SecurityException}.
*
* @param permission The name of the permission being checked.
* @param pid The process ID being checked against. Must be > 0.
* @param uid The user ID being checked against. A uid of 0 is the root
* user, which will pass every permission check.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkPermission(String, int, int)
*/
public abstract void enforcePermission(
@NonNull String permission, int pid, int uid, @Nullable String message);
/**
* If the calling process of an IPC you are handling has not been
* granted a particular permission, throw a {@link
* SecurityException}. This is basically the same as calling
* {@link #enforcePermission(String, int, int, String)} with the
* pid and uid returned by {@link android.os.Binder#getCallingPid}
* and {@link android.os.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 {@link #enforceCallingOrSelfPermission} to avoid this
* protection.
*
* @param permission The name of the permission being checked.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkCallingPermission(String)
*/
public abstract void enforceCallingPermission(
@NonNull String permission, @Nullable String message);
/**
* If neither you nor the calling process of an IPC you are
* handling has been granted a particular permission, throw a
* {@link SecurityException}. This is the same as {@link
* #enforceCallingPermission}, except it grants your own
* permissions if you are not currently processing an IPC. Use
* with care!
*
* @param permission The name of the permission being checked.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkCallingOrSelfPermission(String)
*/
public abstract void enforceCallingOrSelfPermission(
@NonNull String permission, @Nullable String message);
/**
* 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 {@link Intent#FLAG_GRANT_READ_URI_PERMISSION
* Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION
* 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
* {@link #revokeUriPermission} when the target should no longer be allowed
* to access it.
*
*
To succeed, the content provider owning the Uri must have set the
* {@link android.R.styleable#AndroidManifestProvider_grantUriPermissions
* grantUriPermissions} attribute in its manifest or included the
* {@link android.R.styleable#AndroidManifestGrantUriPermission
* <grant-uri-permissions>} tag.
*
* @param toPackage The package you would like to allow to access the Uri.
* @param uri The Uri you would like to grant access to.
* @param modeFlags The desired access modes. Any combination of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION
* Intent.FLAG_GRANT_READ_URI_PERMISSION},
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION
* Intent.FLAG_GRANT_WRITE_URI_PERMISSION},
* {@link Intent#FLAG_GRANT_PERSISTABLE_URI_PERMISSION
* Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION}, or
* {@link Intent#FLAG_GRANT_PREFIX_URI_PERMISSION
* Intent.FLAG_GRANT_PREFIX_URI_PERMISSION}.
*
* @see #revokeUriPermission
*/
public abstract void grantUriPermission(String toPackage, Uri uri,
@Intent.GrantUriMode int modeFlags);
/**
* Remove all permissions to access a particular content provider Uri
* that were previously added with {@link #grantUriPermission}. 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 {@link android.os.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 {@link SecurityException} would be thrown. As of
* {@link android.os.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).
*
* @param uri The Uri you would like to revoke access to.
* @param modeFlags The desired access modes. Any combination of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION
* Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION
* Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
*
* @see #grantUriPermission
*/
public abstract void revokeUriPermission(Uri uri, @Intent.AccessUriMode int modeFlags);
/**
* 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.
*
* @param uri The uri that is being checked.
* @param pid The process ID being checked against. Must be > 0.
* @param uid The user ID being checked against. A uid of 0 is the root
* user, which will pass every permission check.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the given
* pid/uid is allowed to access that uri, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*
* @see #checkCallingUriPermission
*/
@CheckResult(suggest="#enforceUriPermission(Uri,int,int,String)")
public abstract int checkUriPermission(Uri uri, int pid, int uid,
@Intent.AccessUriMode int modeFlags);
/** @hide */
public abstract int checkUriPermission(Uri uri, int pid, int uid,
@Intent.AccessUriMode int modeFlags, IBinder callerToken);
/**
* Determine whether the calling process and user ID has been
* granted permission to access a specific URI. This is basically
* the same as calling {@link #checkUriPermission(Uri, int, int,
* int)} with the pid and uid returned by {@link
* android.os.Binder#getCallingPid} and {@link
* android.os.Binder#getCallingUid}. One important difference is
* that if you are not currently processing an IPC, this function
* will always fail.
*
* @param uri The uri that is being checked.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the caller
* is allowed to access that uri, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*
* @see #checkUriPermission(Uri, int, int, int)
*/
@CheckResult(suggest="#enforceCallingUriPermission(Uri,int,String)")
public abstract int checkCallingUriPermission(Uri uri, @Intent.AccessUriMode 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
* {@link #checkCallingUriPermission}, except it grants your own permissions
* if you are not currently processing an IPC. Use with care!
*
* @param uri The uri that is being checked.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the caller
* is allowed to access that uri, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*
* @see #checkCallingUriPermission
*/
@CheckResult(suggest="#enforceCallingOrSelfUriPermission(Uri,int,String)")
public abstract int checkCallingOrSelfUriPermission(Uri uri,
@Intent.AccessUriMode int modeFlags);
/**
* Check both a Uri and normal permission. This allows you to perform
* both {@link #checkPermission} and {@link #checkUriPermission} in one
* call.
*
* @param uri The Uri whose permission is to be checked, or null to not
* do this check.
* @param readPermission The permission that provides overall read access,
* or null to not do this check.
* @param writePermission The permission that provides overall write
* access, or null to not do this check.
* @param pid The process ID being checked against. Must be > 0.
* @param uid The user ID being checked against. A uid of 0 is the root
* user, which will pass every permission check.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
*
* @return {@link PackageManager#PERMISSION_GRANTED} if the caller
* is allowed to access that uri or holds one of the given permissions, or
* {@link PackageManager#PERMISSION_DENIED} if it is not.
*/
@CheckResult(suggest="#enforceUriPermission(Uri,String,String,int,int,int,String)")
public abstract int checkUriPermission(@Nullable Uri uri, @Nullable String readPermission,
@Nullable String writePermission, int pid, int uid,
@Intent.AccessUriMode int modeFlags);
/**
* If a particular process and user ID has not been granted
* permission to access a specific URI, throw {@link
* 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.
*
* @param uri The uri that is being checked.
* @param pid The process ID being checked against. Must be > 0.
* @param uid The user ID being checked against. A uid of 0 is the root
* user, which will pass every permission check.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkUriPermission(Uri, int, int, int)
*/
public abstract void enforceUriPermission(
Uri uri, int pid, int uid, @Intent.AccessUriMode int modeFlags, String message);
/**
* If the calling process and user ID has not been granted
* permission to access a specific URI, throw {@link
* SecurityException}. This is basically the same as calling
* {@link #enforceUriPermission(Uri, int, int, int, String)} with
* the pid and uid returned by {@link
* android.os.Binder#getCallingPid} and {@link
* android.os.Binder#getCallingUid}. One important difference is
* that if you are not currently processing an IPC, this function
* will always throw a SecurityException.
*
* @param uri The uri that is being checked.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkCallingUriPermission(Uri, int)
*/
public abstract void enforceCallingUriPermission(
Uri uri, @Intent.AccessUriMode int modeFlags, String message);
/**
* If the calling process of an IPC or you has not been
* granted permission to access a specific URI, throw {@link
* SecurityException}. This is the same as {@link
* #enforceCallingUriPermission}, except it grants your own
* permissions if you are not currently processing an IPC. Use
* with care!
*
* @param uri The uri that is being checked.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkCallingOrSelfUriPermission(Uri, int)
*/
public abstract void enforceCallingOrSelfUriPermission(
Uri uri, @Intent.AccessUriMode int modeFlags, String message);
/**
* Enforce both a Uri and normal permission. This allows you to perform
* both {@link #enforcePermission} and {@link #enforceUriPermission} in one
* call.
*
* @param uri The Uri whose permission is to be checked, or null to not
* do this check.
* @param readPermission The permission that provides overall read access,
* or null to not do this check.
* @param writePermission The permission that provides overall write
* access, or null to not do this check.
* @param pid The process ID being checked against. Must be > 0.
* @param uid The user ID being checked against. A uid of 0 is the root
* user, which will pass every permission check.
* @param modeFlags The type of access to grant. May be one or both of
* {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} or
* {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION}.
* @param message A message to include in the exception if it is thrown.
*
* @see #checkUriPermission(Uri, String, String, int, int, int)
*/
public abstract void enforceUriPermission(
@Nullable Uri uri, @Nullable String readPermission,
@Nullable String writePermission, int pid, int uid, @Intent.AccessUriMode int modeFlags,
@Nullable String message);
/** @hide */
@IntDef(flag = true,
value = {CONTEXT_INCLUDE_CODE, CONTEXT_IGNORE_SECURITY, CONTEXT_RESTRICTED})
@Retention(RetentionPolicy.SOURCE)
public @interface CreatePackageOptions {}
/**
* Flag for use with {@link #createPackageContext}: include the application
* code with the context. This means loading code into the caller's
* process, so that {@link #getClassLoader()} can be used to instantiate
* the application's classes. Setting this flags imposes security
* restrictions on what application context you can access; if the
* requested application can not be safely loaded into your process,
* java.lang.SecurityException will be thrown. If this flag is not set,
* there will be no restrictions on the packages that can be loaded,
* but {@link #getClassLoader} will always return the default system
* class loader.
*/
public static final int CONTEXT_INCLUDE_CODE = 0x00000001;
/**
* Flag for use with {@link #createPackageContext}: ignore any security
* restrictions on the Context being requested, allowing it to always
* be loaded. For use with {@link #CONTEXT_INCLUDE_CODE} to allow code
* to be loaded into a process even when it isn't safe to do so. Use
* with extreme care!
*/
public static final int CONTEXT_IGNORE_SECURITY = 0x00000002;
/**
* Flag for use with {@link #createPackageContext}: a restricted context may
* disable specific features. For instance, a View associated with a restricted
* context would ignore particular XML attributes.
*/
public static final int CONTEXT_RESTRICTED = 0x00000004;
/**
* Flag for use with {@link #createPackageContext}: point all file APIs at
* device-protected storage.
*
* @hide
*/
public static final int CONTEXT_DEVICE_PROTECTED_STORAGE = 0x00000008;
/**
* Flag for use with {@link #createPackageContext}: point all file APIs at
* credential-protected storage.
*
* @hide
*/
public static final int CONTEXT_CREDENTIAL_PROTECTED_STORAGE = 0x00000010;
/**
* @hide Used to indicate we should tell the activity manager about the process
* loading this code.
*/
public static final int CONTEXT_REGISTER_PACKAGE = 0x40000000;
/**
* 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 {@link android.content.pm.PackageManager.NameNotFoundException} if there is no
* application with the given package name.
*
*
Throws {@link java.lang.SecurityException} if the Context requested
* can not be loaded into the caller's process for security reasons (see
* {@link #CONTEXT_INCLUDE_CODE} for more information}.
*
* @param packageName Name of the application's package.
* @param flags Option flags, one of {@link #CONTEXT_INCLUDE_CODE}
* or {@link #CONTEXT_IGNORE_SECURITY}.
*
* @return A {@link Context} for the application.
*
* @throws SecurityException
* @throws PackageManager.NameNotFoundException if there is no application with
* the given package name.
*/
public abstract Context createPackageContext(String packageName,
@CreatePackageOptions int flags) throws PackageManager.NameNotFoundException;
/**
* Similar to {@link #createPackageContext(String, int)}, but with a
* different {@link UserHandle}. For example, {@link #getContentResolver()}
* will open any {@link Uri} as the given user.
*
* @hide
*/
public abstract Context createPackageContextAsUser(
String packageName, int flags, UserHandle user)
throws PackageManager.NameNotFoundException;
/**
* Creates a context given an {@link android.content.pm.ApplicationInfo}.
*
* @hide
*/
public abstract Context createApplicationContext(ApplicationInfo application,
int flags) throws PackageManager.NameNotFoundException;
/**
* Get the userId associated with this context
* @return user id
*
* @hide
*/
@TestApi
public abstract @UserIdInt int getUserId();
/**
* 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.
*
* @param overrideConfiguration A {@link 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.
*
* @return A {@link Context} with the given configuration override.
*/
public abstract Context createConfigurationContext(
@NonNull Configuration overrideConfiguration);
/**
* Return a new Context object for the current Context but whose resources
* are adjusted to match the metrics of the given Display. 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.
*
* The returned display Context provides a {@link WindowManager}
* (see {@link #getSystemService(String)}) that is configured to show windows
* on the given display. The WindowManager's {@link WindowManager#getDefaultDisplay}
* method can be used to retrieve the Display from the returned Context.
*
* @param display A {@link Display} object specifying the display
* for whose metrics the Context's resources should be tailored and upon which
* new windows should be shown.
*
* @return A {@link Context} for the display.
*/
public abstract Context createDisplayContext(@NonNull Display display);
/**
* 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.
*
* @see #isDeviceProtectedStorage()
*/
public abstract Context createDeviceProtectedStorageContext();
/** @removed */
@Deprecated
public Context createDeviceEncryptedStorageContext() {
return createDeviceProtectedStorageContext();
}
/**
* Return a new Context object for the current Context but whose storage
* APIs are backed by credential-protected storage. This is the default
* storage area for apps unless
* {@link android.R.attr#defaultToDeviceProtectedStorage} was requested.
*
* On devices with direct boot, data stored in this location is encrypted
* with a key tied to user credentials, which can be accessed
* only after the user has entered their credentials (such as a
* lock pattern or PIN).
*
* 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.
*
* @see #isCredentialProtectedStorage()
* @hide
*/
@SystemApi
public abstract Context createCredentialProtectedStorageContext();
/** @removed */
@Deprecated
public Context createCredentialEncryptedStorageContext() {
return createCredentialProtectedStorageContext();
}
/**
* Gets the display adjustments holder for this context. This information
* is provided on a per-application or activity basis and is used to simulate lower density
* display metrics for legacy applications and restricted screen sizes.
*
* @param displayId The display id for which to get compatibility info.
* @return The compatibility info holder, or null if not required by the application.
* @hide
*/
public abstract DisplayAdjustments getDisplayAdjustments(int displayId);
/**
* @hide
*/
public abstract Display getDisplay();
/**
* Indicates whether this Context is restricted.
*
* @return {@code true} if this Context is restricted, {@code false} otherwise.
*
* @see #CONTEXT_RESTRICTED
*/
public boolean isRestricted() {
return false;
}
/**
* Indicates if the storage APIs of this Context are backed by
* device-protected storage.
*
* @see #createDeviceProtectedStorageContext()
*/
public abstract boolean isDeviceProtectedStorage();
/** @removed */
@Deprecated
public boolean isDeviceEncryptedStorage() {
return isDeviceProtectedStorage();
}
/**
* Indicates if the storage APIs of this Context are backed by
* credential-protected storage.
*
* @see #createCredentialProtectedStorageContext()
* @hide
*/
@SystemApi
public abstract boolean isCredentialProtectedStorage();
/** @removed */
@Deprecated
public boolean isCredentialEncryptedStorage() {
return isCredentialProtectedStorage();
}
}