Java tutorial
/* * 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.UnsupportedAppUsage; import android.annotation.UserIdInt; import android.app.ActivityManager; import android.app.IApplicationThread; import android.app.IServiceConnection; import android.app.VrManager; 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.Build; import android.os.Bundle; import android.os.Environment; import android.os.Handler; import android.os.HandlerExecutor; import android.os.IBinder; import android.os.Looper; import android.os.StatFs; import android.os.UserHandle; import android.os.UserManager; import android.os.storage.StorageManager; import android.provider.MediaStore; import android.util.AttributeSet; import android.view.Display; import android.view.DisplayAdjustments; import android.view.View; import android.view.ViewDebug; import android.view.WindowManager; import android.view.autofill.AutofillManager.AutofillClient; import android.view.textclassifier.TextClassificationManager; 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; import java.util.concurrent.Executor; /** * 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 { /** @hide */ @IntDef(flag = true, prefix = { "MODE_" }, value = { MODE_PRIVATE, MODE_WORLD_READABLE, MODE_WORLD_WRITEABLE, MODE_APPEND, }) @Retention(RetentionPolicy.SOURCE) public @interface FileMode { } /** @hide */ @IntDef(flag = true, prefix = { "MODE_" }, value = { MODE_PRIVATE, MODE_WORLD_READABLE, MODE_WORLD_WRITEABLE, MODE_MULTI_PROCESS, }) @Retention(RetentionPolicy.SOURCE) public @interface PreferencesMode { } /** @hide */ @IntDef(flag = true, prefix = { "MODE_" }, value = { MODE_PRIVATE, MODE_WORLD_READABLE, MODE_WORLD_WRITEABLE, MODE_ENABLE_WRITE_AHEAD_LOGGING, MODE_NO_LOCALIZED_COLLATORS, }) @Retention(RetentionPolicy.SOURCE) public @interface DatabaseMode { } /** * 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. * <p> * Starting from {@link android.os.Build.VERSION_CODES#N}, attempting to use this * mode throws 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. * <p> * Starting from {@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. * * <p>This was the legacy (but undocumented) behavior in and * before Gingerbread (Android 2.3) and this flag is implied when * targeting such releases. For applications targeting SDK * versions <em>greater than</em> 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, prefix = { "BIND_" }, 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. * * <p>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; /** * Flag for {@link #bindService}: If binding from something better than perceptible, * still set the adjust below perceptible. This would be used for bound services that can * afford to be evicted when under extreme memory pressure, but should be restarted as soon * as possible. * @hide */ public static final int BIND_ADJUST_BELOW_PERCEPTIBLE = 0x0100; /** * @hide Flag for {@link #bindService}: allows binding to a service provided * by an instant app. Note that the caller may not have access to the instant * app providing the service which is a violation of the instant app sandbox. * This flag is intended ONLY for development/testing and should be used with * great care. Only the system is allowed to use this flag. */ public static final int BIND_ALLOW_INSTANT = 0x00400000; /** * @hide Flag for {@link #bindService}: like {@link #BIND_NOT_FOREGROUND}, but puts it * up in to the important background state (instead of transient). */ public static final int BIND_IMPORTANT_BACKGROUND = 0x00800000; /** * @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. * <p> * 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. * </p> */ public static final int BIND_EXTERNAL_SERVICE = 0x80000000; /** @hide */ @IntDef(flag = true, prefix = { "RECEIVER_VISIBLE_" }, value = { RECEIVER_VISIBLE_TO_INSTANT_APPS }) @Retention(RetentionPolicy.SOURCE) public @interface RegisterReceiverFlags { } /** * Flag for {@link #registerReceiver}: The receiver can receive broadcasts from Instant Apps. */ public static final int RECEIVER_VISIBLE_TO_INSTANT_APPS = 0x1; /** * Returns an AssetManager instance for the application's package. * <p> * <strong>Note:</strong> 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. * <p> * <strong>Note:</strong> 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). * <p> * By definition, this method returns the same result as would be obtained * by calling {@link Looper#getMainLooper() Looper.getMainLooper()}. * </p> * * @return The main looper. */ public abstract Looper getMainLooper(); /** * Return an {@link Executor} that will run enqueued tasks on the main * thread associated with this context. This is the thread used to dispatch * calls to application components (activities, services, etc). */ public Executor getMainExecutor() { // This is pretty inefficient, which is why ContextImpl overrides it return new HandlerExecutor(new Handler(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. * * <p>Consider for example how this interacts with * {@link #registerReceiver(BroadcastReceiver, IntentFilter)}: * <ul> * <li> <p>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. * <li> <p>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. * </ul> */ public abstract Context getApplicationContext(); /** Non-activity related autofill ids are unique in the app */ private static int sLastAutofillId = View.NO_ID; /** * Gets the next autofill ID. * * <p>All IDs will be smaller or the same as {@link View#LAST_APP_AUTOFILL_ID}. All IDs * returned will be unique. * * @return A ID that is unique in the process * * {@hide} */ public int getNextAutofillId() { if (sLastAutofillId == View.LAST_APP_AUTOFILL_ID - 1) { sLastAutofillId = View.NO_ID; } sLastAutofillId++; return sLastAutofillId; } /** * 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 * <em>must</em> 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 */ @NonNull 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. * @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. * @throws android.content.res.Resources.NotFoundException if the given ID * does not exist. */ @NonNull 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. */ @UnsupportedAppUsage 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. */ @UnsupportedAppUsage 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). */ @UnsupportedAppUsage 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. * * <p>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. * * <p>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 @UnsupportedAppUsage 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. * * This method is thead-safe. * * @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. * * @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, @PreferencesMode 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. * * @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, @PreferencesMode 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); /** * 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); /** @hide */ public abstract void reloadSharedPreferences(); /** * 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. * <p> * 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. * @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, @FileMode 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. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * This is like {@link #getFilesDir()} in that these files will be deleted * when the application is uninstalled, however there are some important * differences: * <ul> * <li>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)}. * <li>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. * </ul> * <p> * 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. * <p> * 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. * <p> * 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. * <p> * The returned path may change over time if different shared storage media * is inserted, so only relative paths should be persisted. * <p> * Here is an example of typical code to manipulate a file in an * application's shared storage: * </p> * {@sample development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java * private_file} * <p> * If you supply a non-null <var>type</var> 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. * <p> * Here is an example of typical code to manipulate a picture in an * application's shared storage and add it to the media database: * </p> * {@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. * <p> * This is like {@link #getFilesDir()} in that these files will be deleted * when the application is uninstalled, however there are some important * differences: * <ul> * <li>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)}. * <li>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. * </ul> * <p> * 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. * <p> * 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. * <p> * 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}. * <p> * 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. * <p> * 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. * <p> * This is like {@link #getFilesDir()} in that these files will be deleted * when the application is uninstalled, however there are some important * differences: * <ul> * <li>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)}. * <li>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. * </ul> * <p> * Starting in {@link android.os.Build.VERSION_CODES#KITKAT}, no permissions * are required to read or write to the path that this method returns. * However, starting from {@link android.os.Build.VERSION_CODES#M}, * to read the OBB expansion files, you must declare the * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} permission in the app manifest and ask for * permission at runtime as follows: * </p> * <p> * {@code <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" * android:maxSdkVersion="23" />} * </p> * <p> * Starting from {@link android.os.Build.VERSION_CODES#N}, * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} * permission is not required, so dont ask for this * permission at runtime. To handle both cases, your app must first try to read the OBB file, * and if it fails, you must request * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} permission at runtime. * </p> * * <p> * The following code snippet shows how to do this: * </p> * * <pre> * File obb = new File(obb_filename); * boolean open_failed = false; * * try { * BufferedReader br = new BufferedReader(new FileReader(obb)); * open_failed = false; * ReadObbFile(br); * } catch (IOException e) { * open_failed = true; * } * * if (open_failed) { * // request READ_EXTERNAL_STORAGE permission before reading OBB file * ReadObbFileWithPermission(); * } * </pre> * * 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. * <p> * This is like {@link #getFilesDir()} in that these files will be deleted * when the application is uninstalled, however there are some important * differences: * <ul> * <li>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)}. * <li>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. * </ul> * <p> * 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. * <p> * 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}. * <p> * 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. * <p> * The system will automatically delete files in this directory as disk * space is needed elsewhere on the device. The system will always delete * older files first, as reported by {@link File#lastModified()}. If * desired, you can exert more control over how files are deleted using * {@link StorageManager#setCacheBehaviorGroup(File, boolean)} and * {@link StorageManager#setCacheBehaviorTombstone(File, boolean)}. * <p> * Apps are strongly encouraged to keep their usage of cache space below the * quota returned by * {@link StorageManager#getCacheQuotaBytes(java.util.UUID)}. If your app * goes above this quota, your cached files will be some of the first to be * deleted when additional disk space is needed. Conversely, if your app * stays under this quota, your cached files will be some of the last to be * deleted when additional disk space is needed. * <p> * Note that your cache quota will change over time depending on how * frequently the user interacts with your app, and depending on how much * system-wide disk space is used. * <p> * 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. * <p> * 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 * @see #getExternalCacheDir */ public abstract File getCacheDir(); /** * Returns the absolute path to the application specific cache directory on * the filesystem designed for storing cached code. * <p> * The system will delete any files stored in this location both when your * specific application is upgraded, and when the entire platform is * upgraded. * <p> * This location is optimal for storing compiled or optimized code generated * by your application at runtime. * <p> * 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. * <p> * 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. * <p> * This is like {@link #getCacheDir()} in that these files will be deleted * when the application is uninstalled, however there are some important * differences: * <ul> * <li>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. * <li>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)}. * <li>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. * </ul> * <p> * If a shared storage device is emulated (as determined by * {@link Environment#isExternalStorageEmulated(File)}), its contents are * backed by a private user data partition, which means there is little * benefit to storing data here instead of the private directory returned by * {@link #getCacheDir()}. * <p> * 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. * <p> * 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. * <p> * 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 path to application-specific directory in the preloaded cache. * <p>Files stored in the cache directory can be deleted when the device runs low on storage. * There is no guarantee when these files will be deleted. * @hide */ @Nullable @SystemApi public abstract File getPreloadsFileCache(); /** * 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. * <p> * This is like {@link #getCacheDir()} in that these files will be deleted * when the application is uninstalled, however there are some important * differences: * <ul> * <li>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. * <li>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)}. * <li>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. * </ul> * <p> * 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()}. * <p> * 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. * <p> * 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}. * <p> * 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. * <p> * 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}. * <p> * This is like {@link #getExternalFilesDirs} in that these files will be * deleted when the application is uninstalled, however there are some * important differences: * <ul> * <li>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)}. * <li>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. * </ul> * <p> * 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. * <p> * 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}. * <p> * 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. * <p> * 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. * <p> * 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. * <p> * 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. * * @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, @FileMode 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. * @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, @DatabaseMode 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. * <p> * Accepts input param: a concrete instance of {@link DatabaseErrorHandler} * to be used to handle corruption when sqlite reports database corruption. * </p> * * @param name The name (unique in the application package) of the database. * @param mode Operating mode. * @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, @DatabaseMode 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. * <p> * 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); /** * 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. * <p> * 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. * <p>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. * <p>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. * <p>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. * @param intent The description of the activity to start. * @param user The UserHandle of the user to start this activity for. * @throws ActivityNotFoundException * @hide */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL) @SystemApi public void startActivityAsUser(@RequiresPermission @NonNull Intent intent, @NonNull 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. * * <p>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. * * <p>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. * @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 */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL) @UnsupportedAppUsage 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 */ @UnsupportedAppUsage 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 */ @UnsupportedAppUsage 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). * * <p>This method throws {@link ActivityNotFoundException} * if there was no Activity found for <em>any</em> 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). * * <p>This method throws {@link ActivityNotFoundException} * if there was no Activity found for <em>any</em> 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. * * @return The corresponding flag {@link ActivityManager#START_CANCELED}, * {@link ActivityManager#START_SUCCESS} etc. indicating whether the launch was * successful. * * @throws ActivityNotFoundException * * @see #startActivities(Intent[]) * @see PackageManager#resolveActivity */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL) public int 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 * <var>flagsMask</var> * @param extraFlags Always set to 0. * * @see #startActivity(Intent) * @see #startIntentSender(IntentSender, Intent, int, int, int, Bundle) */ public abstract void startIntentSender(IntentSender intent, @Nullable Intent fillInIntent, @Intent.MutableFlags int flagsMask, @Intent.MutableFlags 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 * <var>flagsMask</var> * @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, @Intent.MutableFlags int flagsMask, @Intent.MutableFlags int flagsValues, int extraFlags, @Nullable 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)}. * * <p>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)}. * * <p>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)}. * * <p>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 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)}. * * <p>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 The user to send the broadcast to. * @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 sendBroadcastAsUserMultiplePermissions(Intent intent, UserHandle user, 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)}. * * <p>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 */ @UnsupportedAppUsage 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. * * <p>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)}. * * <p>Like {@link #sendBroadcast(Intent)}, this method is * asynchronous; it will return before * resultReceiver.onReceive() is called. * * <p>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)}. * * <p>Like {@link #sendBroadcast(Intent)}, this method is * asynchronous; it will return before * resultReceiver.onReceive() is called. * * <p>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 */ @UnsupportedAppUsage 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. * @param intent The intent to broadcast * @param user UserHandle to send the intent to. * @see #sendBroadcast(Intent) */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) 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. * * @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) */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) public abstract void sendBroadcastAsUser(@RequiresPermission Intent intent, UserHandle user, @Nullable String receiverPermission); /** * Version of {@link #sendBroadcast(Intent, 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. * * @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 options (optional) Additional sending options, generated from a * {@link android.app.BroadcastOptions}. * * @see #sendBroadcast(Intent, String, Bundle) * @hide */ @SystemApi @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) public abstract void sendBroadcastAsUser(@RequiresPermission Intent intent, UserHandle user, @Nullable String receiverPermission, @Nullable Bundle options); /** * 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. * * @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 */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) @UnsupportedAppUsage 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. * * <p>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) */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) 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 */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) @UnsupportedAppUsage 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 */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) @UnsupportedAppUsage 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); /** * <p>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)}. * * @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 <em>something</em> * 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 @RequiresPermission(android.Manifest.permission.BROADCAST_STICKY) public abstract void sendStickyBroadcast(@RequiresPermission Intent intent); /** * <p>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)}. * * <p>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. * * <p>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 <em>something</em> * 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 @RequiresPermission(android.Manifest.permission.BROADCAST_STICKY) public abstract void sendStickyOrderedBroadcast(@RequiresPermission Intent intent, BroadcastReceiver resultReceiver, @Nullable Handler scheduler, int initialCode, @Nullable String initialData, @Nullable Bundle initialExtras); /** * <p>Remove the data previously sent with {@link #sendStickyBroadcast}, * so that it is as if the sticky broadcast had never happened. * * @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 <em>something</em> * 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 @RequiresPermission(android.Manifest.permission.BROADCAST_STICKY) public abstract void removeStickyBroadcast(@RequiresPermission Intent intent); /** * <p>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. * * @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 <em>something</em> * 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 @RequiresPermission(allOf = { android.Manifest.permission.INTERACT_ACROSS_USERS, android.Manifest.permission.BROADCAST_STICKY }) public abstract void sendStickyBroadcastAsUser(@RequiresPermission Intent intent, UserHandle user); /** * @hide * This is just here for sending CONNECTIVITY_ACTION. */ @Deprecated @RequiresPermission(allOf = { android.Manifest.permission.INTERACT_ACROSS_USERS, android.Manifest.permission.BROADCAST_STICKY }) public abstract void sendStickyBroadcastAsUser(@RequiresPermission Intent intent, UserHandle user, Bundle options); /** * <p>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. * * <p>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 <em>something</em> * 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 @RequiresPermission(allOf = { android.Manifest.permission.INTERACT_ACROSS_USERS, android.Manifest.permission.BROADCAST_STICKY }) public abstract void sendStickyOrderedBroadcastAsUser(@RequiresPermission Intent intent, UserHandle user, BroadcastReceiver resultReceiver, @Nullable Handler scheduler, int initialCode, @Nullable String initialData, @Nullable Bundle initialExtras); /** * <p>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. * * <p>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 <em>something</em> * 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 @RequiresPermission(allOf = { android.Manifest.permission.INTERACT_ACROSS_USERS, android.Manifest.permission.BROADCAST_STICKY }) public abstract void removeStickyBroadcastAsUser(@RequiresPermission Intent intent, UserHandle user); /** * Register a BroadcastReceiver to be run in the main activity thread. The * <var>receiver</var> will be called with any broadcast Intent that * matches <var>filter</var>, in the main application thread. * * <p>The system may broadcast Intents that are "sticky" -- these stay * around after the broadcast has finished, to be sent to any later * registrations. If your IntentFilter matches one of these sticky * Intents, that Intent will be returned by this function * <strong>and</strong> sent to your <var>receiver</var> as if it had just * been broadcast. * * <p>There may be multiple sticky Intents that match <var>filter</var>, * in which case each of these will be sent to <var>receiver</var>. 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. * * <p>If you know the Intent your are registering for is sticky, you can * supply null for your <var>receiver</var>. In this case, no receiver is * registered -- the function simply returns the sticky Intent that * matches <var>filter</var>. In the case of multiple matches, the same * rules as described above apply. * * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. * * <p>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.</p> * * <p class="note">Note: this method <em>cannot be called from a * {@link BroadcastReceiver} component;</em> 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.</p> * * @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 <var>filter</var>, * 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, with the receiver optionally being * exposed to Instant Apps. See * {@link #registerReceiver(BroadcastReceiver, IntentFilter)} for more * information. By default Instant Apps cannot interact with receivers in other * applications, this allows you to expose a receiver that Instant Apps can * interact with. * * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. * * <p>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.</p> * * @param receiver The BroadcastReceiver to handle the broadcast. * @param filter Selects the Intent broadcasts to be received. * @param flags Additional options for the receiver. May be 0 or * {@link #RECEIVER_VISIBLE_TO_INSTANT_APPS}. * * @return The first sticky intent found that matches <var>filter</var>, * or null if there are none. * * @see #registerReceiver(BroadcastReceiver, IntentFilter) * @see #sendBroadcast * @see #unregisterReceiver */ @Nullable public abstract Intent registerReceiver(@Nullable BroadcastReceiver receiver, IntentFilter filter, @RegisterReceiverFlags int flags); /** * Register to receive intent broadcasts, to run in the context of * <var>scheduler</var>. 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. * * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. * * <p>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.</p> * * @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 <var>filter</var>, * 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); /** * Register to receive intent broadcasts, to run in the context of * <var>scheduler</var>. See * {@link #registerReceiver(BroadcastReceiver, IntentFilter, int)} and * {@link #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler)} * for more information. * * <p>See {@link BroadcastReceiver} for more information on Intent broadcasts. * * <p>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.</p> * * @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. * @param flags Additional options for the receiver. May be 0 or * {@link #RECEIVER_VISIBLE_TO_INSTANT_APPS}. * * @return The first sticky intent found that matches <var>filter</var>, * or null if there are none. * * @see #registerReceiver(BroadcastReceiver, IntentFilter, int) * @see #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler) * @see #sendBroadcast * @see #unregisterReceiver */ @Nullable public abstract Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter, @Nullable String broadcastPermission, @Nullable Handler scheduler, @RegisterReceiverFlags int flags); /** * @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. * * @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 <var>filter</var>, * or null if there are none. * * @see #registerReceiver(BroadcastReceiver, IntentFilter, String, Handler) * @see #sendBroadcast * @see #unregisterReceiver */ @Nullable @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS_FULL) @UnsupportedAppUsage public abstract Intent registerReceiverAsUser(BroadcastReceiver receiver, UserHandle user, IntentFilter filter, @Nullable String broadcastPermission, @Nullable Handler scheduler); /** * Unregister a previously registered BroadcastReceiver. <em>All</em> * 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 either contain the complete class name of a specific service * implementation to start, or a specific package name to target. If the * Intent is less specified, it logs a warning about this. In this case any of the * multiple matching services may be used. If this service * is not already running, it will be instantiated and started (creating a * process for it if needed); if it is running then it remains running. * * <p>Every call to this method will result in a corresponding call to * the target service's {@link android.app.Service#onStartCommand} method, * with the <var>intent</var> given here. This provides a convenient way * to submit jobs to a service without having to bind and call on to its * interface. * * <p>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() * do not nest: no matter how many times you call startService(), * a single call to {@link #stopService} will stop it. * * <p>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. * * <p>This function will throw {@link SecurityException} if you do not * have permission to start the given service. * * <p class="note"><strong>Note:</strong> 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. * </p> * * @param service Identifies the service to be started. The Intent must be * fully explicit (supplying a component name). Additional values * may be included in the Intent extras to supply arguments along with * this specific start call. * * @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 If the caller does not have permission to access the service * or the service can not be found. * @throws IllegalStateException If the application is in a state where the service * can not be started (such as not in the foreground in a state when services are allowed). * * @see #stopService * @see #bindService */ @Nullable public abstract ComponentName startService(Intent service); /** * Similar to {@link #startService(Intent)}, but with an implicit promise that the * Service will call {@link android.app.Service#startForeground(int, android.app.Notification) * startForeground(int, android.app.Notification)} once it begins running. The service is given * an amount of time comparable to the ANR interval to do this, otherwise the system * will automatically stop the service and declare the app ANR. * * <p>Unlike the ordinary {@link #startService(Intent)}, this method can be used * at any time, regardless of whether the app hosting the service is in a foreground * state. * * @param service Identifies the service to be started. The Intent must be * fully explicit (supplying a component name). Additional values * may be included in the Intent extras to supply arguments along with * this specific start call. * * @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 If the caller does not have permission to access the service * or the service can not be found. * * @see #stopService * @see android.app.Service#startForeground(int, android.app.Notification) */ @Nullable public abstract ComponentName startForegroundService(Intent service); /** * @hide like {@link #startForegroundService(Intent)} but for a specific user. */ @Nullable @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) public abstract ComponentName startForegroundServiceAsUser(Intent service, UserHandle user); /** * 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. * * <p>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. * * <p>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 targeted 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 If the caller does not have permission to access the service * or the service can not be found. * @throws IllegalStateException If the application is in a state where the service * can not be started (such as not in the foreground in a state when services are allowed). * * @see #startService */ public abstract boolean stopService(Intent service); /** * @hide like {@link #startService(Intent)} but for a specific user. */ @Nullable @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) @UnsupportedAppUsage public abstract ComponentName startServiceAsUser(Intent service, UserHandle user); /** * @hide like {@link #stopService(Intent)} but for a specific user. */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) 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 * <var>conn</var> 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. * * <p>If the service does not support binding, it may return {@code null} from * its {@link android.app.Service#onBind(Intent) onBind()} method. If it does, then * the ServiceConnection's * {@link ServiceConnection#onNullBinding(ComponentName) onNullBinding()} method * will be invoked instead of * {@link ServiceConnection#onServiceConnected(ComponentName, IBinder) onServiceConnected()}. * * <p>This method will throw {@link SecurityException} if the calling app does not * have permission to bind to the given service. * * <p class="note">Note: this method <em>cannot be called from a * {@link BroadcastReceiver} component</em>. 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).</p> * * @param service Identifies the service to connect to. The Intent must * specify an explicit component name. * @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 {@code true} if the system is in the process of bringing up a * service that your client has permission to bind to; {@code false} * if the system couldn't find the service or if your client doesn't * have permission to bind to it. If this value is {@code true}, you * should later call {@link #unbindService} to release the * connection. * * @throws SecurityException If the caller does not have permission to access the service * or the service can not be found. * * @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") @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) 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 */ @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) @UnsupportedAppUsage(trackingBug = 136728678) 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. * * <p>This function is not synchronous -- it returns as soon as the * instrumentation has started and while it is running. * * <p>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(suffix = { "_SERVICE" }, value = { 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, STORAGE_STATS_SERVICE, WALLPAPER_SERVICE, TIME_ZONE_RULES_MANAGER_SERVICE, VIBRATOR_SERVICE, //@hide: STATUS_BAR_SERVICE, CONNECTIVITY_SERVICE, //@hide: IP_MEMORY_STORE_SERVICE, IPSEC_SERVICE, TEST_NETWORK_SERVICE, //@hide: UPDATE_LOCK_SERVICE, //@hide: NETWORKMANAGEMENT_SERVICE, NETWORK_STATS_SERVICE, //@hide: NETWORK_POLICY_SERVICE, WIFI_SERVICE, WIFI_AWARE_SERVICE, WIFI_P2P_SERVICE, WIFI_SCANNING_SERVICE, //@hide: LOWPAN_SERVICE, //@hide: WIFI_RTT_SERVICE, //@hide: ETHERNET_SERVICE, WIFI_RTT_RANGING_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, TEXT_CLASSIFICATION_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, //@hide: OEM_LOCK_SERVICE, MEDIA_PROJECTION_SERVICE, MIDI_SERVICE, RADIO_SERVICE, HARDWARE_PROPERTIES_SERVICE, //@hide: SOUND_TRIGGER_SERVICE, SHORTCUT_SERVICE, //@hide: CONTEXTHUB_SERVICE, SYSTEM_HEALTH_SERVICE, //@hide: INCIDENT_SERVICE, //@hide: STATS_COMPANION_SERVICE, COMPANION_DEVICE_SERVICE, CROSS_PROFILE_APPS_SERVICE, //@hide: SYSTEM_UPDATE_SERVICE, //@hide: TIME_DETECTOR_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: * * <dl> * <dt> {@link #WINDOW_SERVICE} ("window") * <dd> The top-level window manager in which you can place custom * windows. The returned object is a {@link android.view.WindowManager}. * <dt> {@link #LAYOUT_INFLATER_SERVICE} ("layout_inflater") * <dd> A {@link android.view.LayoutInflater} for inflating layout resources * in this context. * <dt> {@link #ACTIVITY_SERVICE} ("activity") * <dd> A {@link android.app.ActivityManager} for interacting with the * global activity state of the system. * <dt> {@link #POWER_SERVICE} ("power") * <dd> A {@link android.os.PowerManager} for controlling power * management. * <dt> {@link #ALARM_SERVICE} ("alarm") * <dd> A {@link android.app.AlarmManager} for receiving intents at the * time of your choosing. * <dt> {@link #NOTIFICATION_SERVICE} ("notification") * <dd> A {@link android.app.NotificationManager} for informing the user * of background events. * <dt> {@link #KEYGUARD_SERVICE} ("keyguard") * <dd> A {@link android.app.KeyguardManager} for controlling keyguard. * <dt> {@link #LOCATION_SERVICE} ("location") * <dd> A {@link android.location.LocationManager} for controlling location * (e.g., GPS) updates. * <dt> {@link #SEARCH_SERVICE} ("search") * <dd> A {@link android.app.SearchManager} for handling search. * <dt> {@link #VIBRATOR_SERVICE} ("vibrator") * <dd> A {@link android.os.Vibrator} for interacting with the vibrator * hardware. * <dt> {@link #CONNECTIVITY_SERVICE} ("connection") * <dd> A {@link android.net.ConnectivityManager ConnectivityManager} for * handling management of network connections. * <dt> {@link #IPSEC_SERVICE} ("ipsec") * <dd> A {@link android.net.IpSecManager IpSecManager} for managing IPSec on * sockets and networks. * <dt> {@link #WIFI_SERVICE} ("wifi") * <dd> A {@link android.net.wifi.WifiManager WifiManager} for management of Wi-Fi * connectivity. On releases before NYC, it should only be obtained from an application * context, and not from any other derived context to avoid memory leaks within the calling * process. * <dt> {@link #WIFI_AWARE_SERVICE} ("wifiaware") * <dd> A {@link android.net.wifi.aware.WifiAwareManager WifiAwareManager} for management of * Wi-Fi Aware discovery and connectivity. * <dt> {@link #WIFI_P2P_SERVICE} ("wifip2p") * <dd> A {@link android.net.wifi.p2p.WifiP2pManager WifiP2pManager} for management of * Wi-Fi Direct connectivity. * <dt> {@link #INPUT_METHOD_SERVICE} ("input_method") * <dd> An {@link android.view.inputmethod.InputMethodManager InputMethodManager} * for management of input methods. * <dt> {@link #UI_MODE_SERVICE} ("uimode") * <dd> An {@link android.app.UiModeManager} for controlling UI modes. * <dt> {@link #DOWNLOAD_SERVICE} ("download") * <dd> A {@link android.app.DownloadManager} for requesting HTTP downloads * <dt> {@link #BATTERY_SERVICE} ("batterymanager") * <dd> A {@link android.os.BatteryManager} for managing battery state * <dt> {@link #JOB_SCHEDULER_SERVICE} ("taskmanager") * <dd> A {@link android.app.job.JobScheduler} for managing scheduled tasks * <dt> {@link #NETWORK_STATS_SERVICE} ("netstats") * <dd> A {@link android.app.usage.NetworkStatsManager NetworkStatsManager} for querying network * usage statistics. * <dt> {@link #HARDWARE_PROPERTIES_SERVICE} ("hardware_properties") * <dd> A {@link android.os.HardwarePropertiesManager} for accessing hardware properties. * </dl> * * <p>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.) * * <p>Note: Instant apps, for which {@link PackageManager#isInstantApp()} returns true, * don't have access to the following system services: {@link #DEVICE_POLICY_SERVICE}, * {@link #FINGERPRINT_SERVICE}, {@link #SHORTCUT_SERVICE}, {@link #USB_SERVICE}, * {@link #WALLPAPER_SERVICE}, {@link #WIFI_P2P_SERVICE}, {@link #WIFI_SERVICE}, * {@link #WIFI_AWARE_SERVICE}. For these services this method will return <code>null</code>. * Generally, if you are running as an instant app you should always check whether the result * of this method is null. * * @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 @Nullable Object getSystemService(@ServiceName @NonNull String name); /** * Return the handle to a system-level service by class. * <p> * 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}. * </p><p> * 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.) * </p> * * <p>Note: Instant apps, for which {@link PackageManager#isInstantApp()} returns true, * don't have access to the following system services: {@link #DEVICE_POLICY_SERVICE}, * {@link #FINGERPRINT_SERVICE}, {@link #SHORTCUT_SERVICE}, {@link #USB_SERVICE}, * {@link #WALLPAPER_SERVICE}, {@link #WIFI_P2P_SERVICE}, {@link #WIFI_SERVICE}, * {@link #WIFI_AWARE_SERVICE}. For these services this method will return <code>null</code>. * Generally, if you are running as an instant app you should always check whether the result * of this method is null. * * @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 @Nullable <T> T getSystemService(@NonNull Class<T> 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 @Nullable String getSystemServiceName(@NonNull Class<?> serviceClass); /** * Use with {@link #getSystemService(String)} 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(String)} to retrieve a * {@link android.os.RecoverySystem} for accessing the recovery system * service. * * @see #getSystemService(String) * @hide */ public static final String RECOVERY_SERVICE = "recovery"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.os.SystemUpdateManager} for accessing the system update * manager service. * * @see #getSystemService(String) * @hide */ @SystemApi public static final String SYSTEM_UPDATE_SERVICE = "system_update"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.view.WindowManager} for accessing the system's window * manager. * * @see #getSystemService(String) * @see android.view.WindowManager */ public static final String WINDOW_SERVICE = "window"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.view.LayoutInflater} for inflating layout resources in this * context. * * @see #getSystemService(String) * @see android.view.LayoutInflater */ public static final String LAYOUT_INFLATER_SERVICE = "layout_inflater"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.accounts.AccountManager} for receiving intents at a * time of your choosing. * * @see #getSystemService(String) * @see android.accounts.AccountManager */ public static final String ACCOUNT_SERVICE = "account"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.ActivityManager} for interacting with the global * system state. * * @see #getSystemService(String) * @see android.app.ActivityManager */ public static final String ACTIVITY_SERVICE = "activity"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.AlarmManager} for receiving intents at a * time of your choosing. * * @see #getSystemService(String) * @see android.app.AlarmManager */ public static final String ALARM_SERVICE = "alarm"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.NotificationManager} for informing the user of * background events. * * @see #getSystemService(String) * @see android.app.NotificationManager */ public static final String NOTIFICATION_SERVICE = "notification"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.view.accessibility.AccessibilityManager} for giving the user * feedback for UI events through the registered event listeners. * * @see #getSystemService(String) * @see android.view.accessibility.AccessibilityManager */ public static final String ACCESSIBILITY_SERVICE = "accessibility"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.view.accessibility.CaptioningManager} for obtaining * captioning properties and listening for changes in captioning * preferences. * * @see #getSystemService(String) * @see android.view.accessibility.CaptioningManager */ public static final String CAPTIONING_SERVICE = "captioning"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.KeyguardManager} for controlling keyguard. * * @see #getSystemService(String) * @see android.app.KeyguardManager */ public static final String KEYGUARD_SERVICE = "keyguard"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.location.LocationManager} for controlling location * updates. * * @see #getSystemService(String) * @see android.location.LocationManager */ public static final String LOCATION_SERVICE = "location"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.location.CountryDetector} for detecting the country that * the user is in. * * @hide */ @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) public static final String COUNTRY_DETECTOR = "country_detector"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.app.SearchManager} for handling searches. * * <p> * {@link Configuration#UI_MODE_TYPE_WATCH} does not support * {@link android.app.SearchManager}. * * @see #getSystemService * @see android.app.SearchManager */ public static final String SEARCH_SERVICE = "search"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.hardware.SensorManager} for accessing sensors. * * @see #getSystemService(String) * @see android.hardware.SensorManager */ public static final String SENSOR_SERVICE = "sensor"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.os.storage.StorageManager} for accessing system storage * functions. * * @see #getSystemService(String) * @see android.os.storage.StorageManager */ public static final String STORAGE_SERVICE = "storage"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.app.usage.StorageStatsManager} for accessing system storage * statistics. * * @see #getSystemService(String) * @see android.app.usage.StorageStatsManager */ public static final String STORAGE_STATS_SERVICE = "storagestats"; /** * Use with {@link #getSystemService(String)} to retrieve a * com.android.server.WallpaperService for accessing wallpapers. * * @see #getSystemService(String) */ public static final String WALLPAPER_SERVICE = "wallpaper"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.os.Vibrator} for interacting with the vibration hardware. * * @see #getSystemService(String) * @see android.os.Vibrator */ public static final String VIBRATOR_SERVICE = "vibrator"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.app.StatusBarManager} for interacting with the status bar. * * @see #getSystemService(String) * @see android.app.StatusBarManager * @hide */ @UnsupportedAppUsage public static final String STATUS_BAR_SERVICE = "statusbar"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.ConnectivityManager} for handling management of * network connections. * * @see #getSystemService(String) * @see android.net.ConnectivityManager */ public static final String CONNECTIVITY_SERVICE = "connectivity"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.net.INetd} for communicating with the network stack * @hide * @see #getSystemService(String) * @hide */ @SystemApi public static final String NETD_SERVICE = "netd"; /** * Use with {@link android.os.ServiceManager.getService()} to retrieve a * {@link NetworkStackClient} IBinder for communicating with the network stack * @hide * @see NetworkStackClient */ public static final String NETWORK_STACK_SERVICE = "network_stack"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.net.IpSecManager} for encrypting Sockets or Networks with * IPSec. * * @see #getSystemService(String) */ public static final String IPSEC_SERVICE = "ipsec"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.TestNetworkManager} for building TUNs and limited-use Networks * * @see #getSystemService(String) * @hide */ @TestApi public static final String TEST_NETWORK_SERVICE = "test_network"; /** * Use with {@link #getSystemService(String)} 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(String) * @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(String)} to retrieve a * {@link com.android.server.slice.SliceManagerService} for managing slices. * @hide * @see #getSystemService(String) */ public static final String SLICE_SERVICE = "slice"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.app.usage.NetworkStatsManager} for querying network usage stats. * * @see #getSystemService(String) * @see android.app.usage.NetworkStatsManager */ public static final String NETWORK_STATS_SERVICE = "netstats"; /** {@hide} */ public static final String NETWORK_POLICY_SERVICE = "netpolicy"; /** {@hide} */ public static final String NETWORK_WATCHLIST_SERVICE = "network_watchlist"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.wifi.WifiManager} for handling management of * Wi-Fi access. * * @see #getSystemService(String) * @see android.net.wifi.WifiManager */ public static final String WIFI_SERVICE = "wifi"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.wifi.p2p.WifiP2pManager} for handling management of * Wi-Fi peer-to-peer connections. * * @see #getSystemService(String) * @see android.net.wifi.p2p.WifiP2pManager */ public static final String WIFI_P2P_SERVICE = "wifip2p"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.net.wifi.aware.WifiAwareManager} for handling management of * Wi-Fi Aware. * * @see #getSystemService(String) * @see android.net.wifi.aware.WifiAwareManager */ public static final String WIFI_AWARE_SERVICE = "wifiaware"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.wifi.WifiScanner} for scanning the wifi universe * * @see #getSystemService(String) * @see android.net.wifi.WifiScanner * @hide */ @SystemApi public static final String WIFI_SCANNING_SERVICE = "wifiscanner"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.wifi.RttManager} for ranging devices with wifi * * @see #getSystemService(String) * @see android.net.wifi.RttManager * @hide */ @SystemApi @Deprecated public static final String WIFI_RTT_SERVICE = "rttmanager"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.wifi.rtt.WifiRttManager} for ranging devices with wifi * * Note: this is a replacement for WIFI_RTT_SERVICE above. It will * be renamed once final implementation in place. * * @see #getSystemService(String) * @see android.net.wifi.rtt.WifiRttManager */ public static final String WIFI_RTT_RANGING_SERVICE = "wifirtt"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.lowpan.LowpanManager} for handling management of * LoWPAN access. * * @see #getSystemService(String) * @see android.net.lowpan.LowpanManager * * @hide */ public static final String LOWPAN_SERVICE = "lowpan"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.EthernetManager} for handling management of * Ethernet access. * * @see #getSystemService(String) * @see android.net.EthernetManager * * @hide */ @UnsupportedAppUsage public static final String ETHERNET_SERVICE = "ethernet"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.net.nsd.NsdManager} for handling management of network service * discovery * * @see #getSystemService(String) * @see android.net.nsd.NsdManager */ public static final String NSD_SERVICE = "servicediscovery"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.media.AudioManager} for handling management of volume, * ringer modes and audio routing. * * @see #getSystemService(String) * @see android.media.AudioManager */ public static final String AUDIO_SERVICE = "audio"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.fingerprint.FingerprintManager} for handling management * of fingerprints. * * @see #getSystemService(String) * @see android.hardware.fingerprint.FingerprintManager */ public static final String FINGERPRINT_SERVICE = "fingerprint"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.media.MediaRouter} for controlling and managing * routing of media. * * @see #getSystemService(String) * @see android.media.MediaRouter */ public static final String MEDIA_ROUTER_SERVICE = "media_router"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.media.session.MediaSessionManager} for managing media Sessions. * * @see #getSystemService(String) * @see android.media.session.MediaSessionManager */ public static final String MEDIA_SESSION_SERVICE = "media_session"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.telephony.TelephonyManager} for handling management the * telephony features of the device. * * @see #getSystemService(String) * @see android.telephony.TelephonyManager */ public static final String TELEPHONY_SERVICE = "phone"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.telephony.SubscriptionManager} for handling management the * telephony subscriptions of the device. * * @see #getSystemService(String) * @see android.telephony.SubscriptionManager */ public static final String TELEPHONY_SUBSCRIPTION_SERVICE = "telephony_subscription_service"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.telecom.TelecomManager} to manage telecom-related features * of the device. * * @see #getSystemService(String) * @see android.telecom.TelecomManager */ public static final String TELECOM_SERVICE = "telecom"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.telephony.CarrierConfigManager} for reading carrier configuration values. * * @see #getSystemService(String) * @see android.telephony.CarrierConfigManager */ public static final String CARRIER_CONFIG_SERVICE = "carrier_config"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.telephony.euicc.EuiccManager} to manage the device eUICC (embedded SIM). * * @see #getSystemService(String) * @see android.telephony.euicc.EuiccManager */ public static final String EUICC_SERVICE = "euicc"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.telephony.euicc.EuiccCardManager} to access the device eUICC (embedded SIM). * * @see #getSystemService(String) * @see android.telephony.euicc.EuiccCardManager * @hide */ @SystemApi public static final String EUICC_CARD_SERVICE = "euicc_card"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.content.ClipboardManager} for accessing and modifying * the contents of the global clipboard. * * @see #getSystemService(String) * @see android.content.ClipboardManager */ public static final String CLIPBOARD_SERVICE = "clipboard"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link TextClassificationManager} for text classification services. * * @see #getSystemService(String) * @see TextClassificationManager */ public static final String TEXT_CLASSIFICATION_SERVICE = "textclassification"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.view.inputmethod.InputMethodManager} for accessing input * methods. * * @see #getSystemService(String) */ public static final String INPUT_METHOD_SERVICE = "input_method"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.view.textservice.TextServicesManager} for accessing * text services. * * @see #getSystemService(String) */ public static final String TEXT_SERVICES_MANAGER_SERVICE = "textservices"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.appwidget.AppWidgetManager} for accessing AppWidgets. * * @see #getSystemService(String) */ public static final String APPWIDGET_SERVICE = "appwidget"; /** * Official published name of the (internal) voice interaction manager service. * * @hide * @see #getSystemService(String) */ public static final String VOICE_INTERACTION_MANAGER_SERVICE = "voiceinteraction"; /** * Official published name of the (internal) autofill service. * * @hide * @see #getSystemService(String) */ public static final String AUTOFILL_MANAGER_SERVICE = "autofill"; /** * Use with {@link #getSystemService(String)} to access the * {@link com.android.server.voiceinteraction.SoundTriggerService}. * * @hide * @see #getSystemService(String) */ public static final String SOUND_TRIGGER_SERVICE = "soundtrigger"; /** * Use with {@link #getSystemService(String)} to retrieve an * {@link android.app.backup.IBackupManager IBackupManager} for communicating * with the backup mechanism. * @hide * * @see #getSystemService(String) */ @SystemApi public static final String BACKUP_SERVICE = "backup"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.os.DropBoxManager} instance for recording * diagnostic logs. * @see #getSystemService(String) */ public static final String DROPBOX_SERVICE = "dropbox"; /** * System service name for the DeviceIdleManager. * @see #getSystemService(String) * @hide */ public static final String DEVICE_IDLE_CONTROLLER = "deviceidle"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.admin.DevicePolicyManager} for working with global * device policy management. * * @see #getSystemService(String) */ public static final String DEVICE_POLICY_SERVICE = "device_policy"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.UiModeManager} for controlling UI modes. * * @see #getSystemService(String) */ public static final String UI_MODE_SERVICE = "uimode"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.DownloadManager} for requesting HTTP downloads. * * @see #getSystemService(String) */ public static final String DOWNLOAD_SERVICE = "download"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.os.BatteryManager} for managing battery state. * * @see #getSystemService(String) */ public static final String BATTERY_SERVICE = "batterymanager"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.nfc.NfcManager} for using NFC. * * @see #getSystemService(String) */ public static final String NFC_SERVICE = "nfc"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.bluetooth.BluetoothManager} for using Bluetooth. * * @see #getSystemService(String) */ public static final String BLUETOOTH_SERVICE = "bluetooth"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.net.sip.SipManager} for accessing the SIP related service. * * @see #getSystemService(String) */ /** @hide */ public static final String SIP_SERVICE = "sip"; /** * Use with {@link #getSystemService(String)} 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(String) * @see android.hardware.usb.UsbManager */ public static final String USB_SERVICE = "usb"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.hardware.SerialManager} for access to serial ports. * * @see #getSystemService(String) * @see android.hardware.SerialManager * * @hide */ public static final String SERIAL_SERVICE = "serial"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.hdmi.HdmiControlManager} for controlling and managing * HDMI-CEC protocol. * * @see #getSystemService(String) * @see android.hardware.hdmi.HdmiControlManager * @hide */ @SystemApi public static final String HDMI_CONTROL_SERVICE = "hdmi_control"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.input.InputManager} for interacting with input devices. * * @see #getSystemService(String) * @see android.hardware.input.InputManager */ public static final String INPUT_SERVICE = "input"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.display.DisplayManager} for interacting with display devices. * * @see #getSystemService(String) * @see android.hardware.display.DisplayManager */ public static final String DISPLAY_SERVICE = "display"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.os.UserManager} for managing users on devices that support multiple users. * * @see #getSystemService(String) * @see android.os.UserManager */ public static final String USER_SERVICE = "user"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.content.pm.LauncherApps} for querying and monitoring launchable apps across * profiles of a user. * * @see #getSystemService(String) * @see android.content.pm.LauncherApps */ public static final String LAUNCHER_APPS_SERVICE = "launcherapps"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.content.RestrictionsManager} for retrieving application restrictions * and requesting permissions for restricted operations. * @see #getSystemService(String) * @see android.content.RestrictionsManager */ public static final String RESTRICTIONS_SERVICE = "restrictions"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.app.AppOpsManager} for tracking application operations * on the device. * * @see #getSystemService(String) * @see android.app.AppOpsManager */ public static final String APP_OPS_SERVICE = "appops"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.camera2.CameraManager} for interacting with * camera devices. * * @see #getSystemService(String) * @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(String) * @see android.print.PrintManager */ public static final String PRINT_SERVICE = "print"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.companion.CompanionDeviceManager} for managing companion devices * * @see #getSystemService(String) * @see android.companion.CompanionDeviceManager */ public static final String COMPANION_DEVICE_SERVICE = "companiondevice"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.ConsumerIrManager} for transmitting infrared * signals from the device. * * @see #getSystemService(String) * @see android.hardware.ConsumerIrManager */ public static final String CONSUMER_IR_SERVICE = "consumer_ir"; /** * {@link android.app.trust.TrustManager} for managing trust agents. * @see #getSystemService(String) * @see android.app.trust.TrustManager * @hide */ public static final String TRUST_SERVICE = "trust"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.media.tv.TvInputManager} for interacting with TV inputs * on the device. * * @see #getSystemService(String) * @see android.media.tv.TvInputManager */ public static final String TV_INPUT_SERVICE = "tv_input"; /** * {@link android.net.NetworkScoreManager} for managing network scoring. * @see #getSystemService(String) * @see android.net.NetworkScoreManager * @hide */ @SystemApi public static final String NETWORK_SCORE_SERVICE = "network_score"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.app.usage.UsageStatsManager} for querying device usage stats. * * @see #getSystemService(String) * @see android.app.usage.UsageStatsManager */ public static final String USAGE_STATS_SERVICE = "usagestats"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.app.job.JobScheduler} instance for managing occasional * background tasks. * @see #getSystemService(String) * @see android.app.job.JobScheduler */ public static final String JOB_SCHEDULER_SERVICE = "jobscheduler"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.service.persistentdata.PersistentDataBlockManager} instance * for interacting with a storage device that lives across factory resets. * * @see #getSystemService(String) * @see android.service.persistentdata.PersistentDataBlockManager * @hide */ @SystemApi public static final String PERSISTENT_DATA_BLOCK_SERVICE = "persistent_data_block"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.service.oemlock.OemLockManager} instance for managing the OEM lock. * * @see #getSystemService(String) * @see android.service.oemlock.OemLockManager * @hide */ @SystemApi public static final String OEM_LOCK_SERVICE = "oem_lock"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.media.projection.MediaProjectionManager} instance for managing * media projection sessions. * @see #getSystemService(String) * @see android.media.projection.MediaProjectionManager */ public static final String MEDIA_PROJECTION_SERVICE = "media_projection"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.media.midi.MidiManager} for accessing the MIDI service. * * @see #getSystemService(String) */ public static final String MIDI_SERVICE = "midi"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.hardware.radio.RadioManager} for accessing the broadcast radio service. * * @see #getSystemService(String) * @hide */ public static final String RADIO_SERVICE = "broadcastradio"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.os.HardwarePropertiesManager} for accessing the hardware properties service. * * @see #getSystemService(String) */ public static final String HARDWARE_PROPERTIES_SERVICE = "hardware_properties"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.content.pm.ShortcutManager} for accessing the launcher shortcut service. * * @see #getSystemService(String) * @see android.content.pm.ShortcutManager */ public static final String SHORTCUT_SERVICE = "shortcut"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.hardware.location.ContextHubManager} for accessing context hubs. * * @see #getSystemService(String) * @see android.hardware.location.ContextHubManager * * @hide */ @SystemApi public static final String CONTEXTHUB_SERVICE = "contexthub"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.os.health.SystemHealthManager} for accessing system health (battery, power, * memory, etc) metrics. * * @see #getSystemService(String) */ public static final String SYSTEM_HEALTH_SERVICE = "systemhealth"; /** * Gatekeeper Service. * @hide */ public static final String GATEKEEPER_SERVICE = "android.service.gatekeeper.IGateKeeperService"; /** * Service defining the policy for access to device identifiers. * @hide */ public static final String DEVICE_IDENTIFIERS_SERVICE = "device_identifiers"; /** * Service to report a system health "incident" * @hide */ public static final String INCIDENT_SERVICE = "incident"; /** * Service to assist statsd in obtaining general stats. * @hide */ public static final String STATS_COMPANION_SERVICE = "statscompanion"; /** * Use with {@link #getSystemService(String)} to retrieve an {@link android.app.StatsManager}. * @hide */ @SystemApi public static final String STATS_MANAGER = "stats"; /** * Service to capture a bugreport. * @see #getSystemService(String) * @see android.os.BugreportManager * @hide */ // TODO: Expose API when the implementation is more complete. // @SystemApi public static final String BUGREPORT_SERVICE = "bugreport"; /** * Use with {@link #getSystemService(String)} to retrieve a {@link * android.content.om.OverlayManager} for managing overlay packages. * * @see #getSystemService(String) * @see android.content.om.OverlayManager * @hide */ public static final String OVERLAY_SERVICE = "overlay"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link VrManager} for accessing the VR service. * * @see #getSystemService(String) * @hide */ @SystemApi public static final String VR_SERVICE = "vrmanager"; /** * Use with {@link #getSystemService(String)} to retrieve an * {@link android.app.timezone.ITimeZoneRulesManager}. * @hide * * @see #getSystemService(String) */ public static final String TIME_ZONE_RULES_MANAGER_SERVICE = "timezone"; /** * Use with {@link #getSystemService(String)} to retrieve a * {@link android.content.pm.CrossProfileApps} for cross profile operations. * * @see #getSystemService(String) */ public static final String CROSS_PROFILE_APPS_SERVICE = "crossprofileapps"; /** * Use with {@link #getSystemService} to retrieve a * {@link android.se.omapi.ISecureElementService} * for accessing the SecureElementService. * * @hide */ @SystemApi public static final String SECURE_ELEMENT_SERVICE = "secure_element"; /** * Use with {@link #getSystemService(String)} to retrieve an * {@link android.app.timedetector.ITimeDetectorService}. * @hide * * @see #getSystemService(String) */ public static final String TIME_DETECTOR_SERVICE = "time_detector"; /** * Use with {@link #getSystemService(String)} to retrieve an * {@link android.telephony.ims.RcsManager}. * @hide */ public static final String TELEPHONY_RCS_SERVICE = "ircs"; /** * Use with {@link #getSystemService(String)} to retrieve an * {@link android.os.DynamicAndroidManager}. * @hide */ @SystemApi public static final String DYNAMIC_ANDROID_SERVICE = "dynamic_android"; /** * 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 @UnsupportedAppUsage 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 <em>or you</em> 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 <em>you</em> 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). * * <p>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. * * <p>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. * * @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} or <em>any other</em> mechanism. * The given Uri will match all previously granted Uris that are the same or a * sub-path of the given Uri. That is, revoking "content://foo/target" will * revoke both "content://foo/target" and "content://foo/target/sub", but not * "content://foo". It will not remove any prefix grants that exist at a * higher level. * * <p>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).</p> * * <p>Unlike {@link #revokeUriPermission(String, Uri, int)}, this method impacts all permission * grants matching the given Uri, for any package they had been granted to, through any * mechanism this had happened (such as indirectly through the clipboard, activity launch, * service start, etc). That means this can be potentially dangerous to use, as it can * revoke grants that another app could be strongly expecting to stick around.</p> * * @param uri The Uri you would like to revoke access to. * @param modeFlags The access modes to revoke. * * @see #grantUriPermission */ public abstract void revokeUriPermission(Uri uri, @Intent.AccessUriMode int modeFlags); /** * Remove permissions to access a particular content provider Uri * that were previously added with {@link #grantUriPermission} for a specific target * package. The given Uri will match all previously granted Uris that are the same or a * sub-path of the given Uri. That is, revoking "content://foo/target" will * revoke both "content://foo/target" and "content://foo/target/sub", but not * "content://foo". It will not remove any prefix grants that exist at a * higher level. * * <p>Unlike {@link #revokeUriPermission(Uri, int)}, this method will <em>only</em> * revoke permissions that had been explicitly granted through {@link #grantUriPermission} * and only for the package specified. Any matching grants that have happened through * other mechanisms (clipboard, activity launching, service starting, etc) will not be * removed.</p> * * @param toPackage The package you had previously granted access to. * @param uri The Uri you would like to revoke access to. * @param modeFlags The access modes to revoke. * * @see #grantUriPermission */ public abstract void revokeUriPermission(String toPackage, 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 access modes to check. * * @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)") @PackageManager.PermissionResult public abstract int checkUriPermission(Uri uri, int pid, int uid, @Intent.AccessUriMode int modeFlags); /** @hide */ @PackageManager.PermissionResult 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 access modes to check. * * @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)") @PackageManager.PermissionResult public abstract int checkCallingUriPermission(Uri uri, @Intent.AccessUriMode int modeFlags); /** * Determine whether the calling process of an IPC <em>or you</em> 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 access modes to check. * * @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)") @PackageManager.PermissionResult 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 access modes to check. * * @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)") @PackageManager.PermissionResult 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 access modes to enforce. * @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 access modes to enforce. * @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 <em>or you</em> 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 access modes to enforce. * @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 access modes to enforce. * @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, prefix = { "CONTEXT_" }, value = { CONTEXT_INCLUDE_CODE, CONTEXT_IGNORE_SECURITY, CONTEXT_RESTRICTED, CONTEXT_DEVICE_PROTECTED_STORAGE, CONTEXT_CREDENTIAL_PROTECTED_STORAGE, CONTEXT_REGISTER_PACKAGE, }) @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. * * <p>Throws {@link android.content.pm.PackageManager.NameNotFoundException} if there is no * application with the given package name. * * <p>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. * * @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 */ @SystemApi public Context createPackageContextAsUser(String packageName, @CreatePackageOptions int flags, UserHandle user) throws PackageManager.NameNotFoundException { if (Build.IS_ENG) { throw new IllegalStateException("createPackageContextAsUser not overridden!"); } return this; } /** * Creates a context given an {@link android.content.pm.ApplicationInfo}. * * @hide */ @UnsupportedAppUsage public abstract Context createApplicationContext(ApplicationInfo application, @CreatePackageOptions int flags) throws PackageManager.NameNotFoundException; /** * Return a new Context object for the given split name. The new Context has a ClassLoader and * Resources object that can access the split's and all of its dependencies' code/resources. * 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 split) may be so the Context itself can be fairly lightweight. * * @param splitName The name of the split to include, as declared in the split's * <code>AndroidManifest.xml</code>. * @return A {@link Context} with the given split's code and/or resources loaded. */ public abstract Context createContextForSplit(String splitName) throws PackageManager.NameNotFoundException; /** * Get the user associated with this context * @hide */ @TestApi public UserHandle getUser() { return android.os.Process.myUserHandle(); } /** * Get the user associated with this context * @hide */ @TestApi public @UserIdInt int getUserId() { return android.os.UserHandle.myUserId(); } /** * 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. * <p> * 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 * <em>before and after</em> the user has authenticated with their * credentials (such as a lock pattern or PIN). * <p> * 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. * <p> * 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. * <p> * 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(); /** * 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. * <p> * On devices with direct boot, data stored in this location is encrypted * with a key tied to user credentials, which can be accessed * <em>only after</em> the user has entered their credentials (such as a * lock pattern or PIN). * <p> * 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. * <p> * 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(); /** * 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 */ @UnsupportedAppUsage public abstract Display getDisplay(); /** * @hide */ public abstract void updateDisplay(int displayId); /** * 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(); /** * Indicates if the storage APIs of this Context are backed by * credential-protected storage. * * @see #createCredentialProtectedStorageContext() * @hide */ @SystemApi public abstract boolean isCredentialProtectedStorage(); /** * Returns true if the context can load unsafe resources, e.g. fonts. * @hide */ public abstract boolean canLoadUnsafeResources(); /** * @hide */ public IBinder getActivityToken() { throw new RuntimeException("Not implemented. Must override in a subclass."); } /** * @hide */ @Nullable public IServiceConnection getServiceDispatcher(ServiceConnection conn, Handler handler, int flags) { throw new RuntimeException("Not implemented. Must override in a subclass."); } /** * @hide */ public IApplicationThread getIApplicationThread() { throw new RuntimeException("Not implemented. Must override in a subclass."); } /** * @hide */ public Handler getMainThreadHandler() { throw new RuntimeException("Not implemented. Must override in a subclass."); } /** * @hide */ public AutofillClient getAutofillClient() { return null; } /** * @hide */ public void setAutofillClient(@SuppressWarnings("unused") AutofillClient client) { } /** * @hide */ public boolean isAutofillCompatibilityEnabled() { return false; } /** * @hide */ @TestApi public void setAutofillCompatibilityEnabled(@SuppressWarnings("unused") boolean autofillCompatEnabled) { } /** * Throws an exception if the Context is using system resources, * which are non-runtime-overlay-themable and may show inconsistent UI. * @hide */ public void assertRuntimeOverlayThemable() { // Resources.getSystem() is a singleton and the only Resources not managed by // ResourcesManager; therefore Resources.getSystem() is not themable. if (getResources() == Resources.getSystem()) { throw new IllegalArgumentException("Non-UI context used to display UI; " + "get a UI context from ActivityThread#getSystemUiContext()"); } } }