Java tutorial
/* * Copyright (C) 2007 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.app; import android.Manifest; import android.annotation.DrawableRes; import android.annotation.IntDef; import android.annotation.NonNull; import android.annotation.Nullable; import android.annotation.RequiresPermission; import android.annotation.SystemApi; import android.annotation.SystemService; import android.annotation.TestApi; import android.annotation.UnsupportedAppUsage; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.pm.ActivityInfo; import android.content.pm.ApplicationInfo; import android.content.pm.ConfigurationInfo; import android.content.pm.IPackageDataObserver; import android.content.pm.PackageManager; import android.content.pm.ParceledListSlice; import android.content.pm.UserInfo; import android.content.res.Configuration; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.GraphicBuffer; import android.graphics.Matrix; import android.graphics.Point; import android.graphics.Rect; import android.os.BatteryStats; import android.os.Binder; import android.os.Build; import android.os.Build.VERSION_CODES; import android.os.Bundle; import android.os.Debug; import android.os.Handler; import android.os.IBinder; import android.os.Parcel; import android.os.Parcelable; import android.os.Process; import android.os.RemoteException; import android.os.ServiceManager; import android.os.SystemProperties; import android.os.UserHandle; import android.os.WorkSource; import android.text.TextUtils; import android.util.ArrayMap; import android.util.DisplayMetrics; import android.util.Singleton; import android.util.Size; import com.android.internal.app.procstats.ProcessStats; import com.android.internal.os.RoSystemProperties; import com.android.internal.os.TransferPipe; import com.android.internal.util.FastPrintWriter; import com.android.internal.util.MemInfoReader; import com.android.server.LocalServices; import org.xmlpull.v1.XmlSerializer; import java.io.FileDescriptor; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintWriter; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.util.ArrayList; import java.util.List; /** * <p> * This class gives information about, and interacts * with, activities, services, and the containing * process. * </p> * * <p> * A number of the methods in this class are for * debugging or informational purposes and they should * not be used to affect any runtime behavior of * your app. These methods are called out as such in * the method level documentation. * </p> * *<p> * Most application developers should not have the need to * use this class, most of whose methods are for specialized * use cases. However, a few methods are more broadly applicable. * For instance, {@link android.app.ActivityManager#isLowRamDevice() isLowRamDevice()} * enables your app to detect whether it is running on a low-memory device, * and behave accordingly. * {@link android.app.ActivityManager#clearApplicationUserData() clearApplicationUserData()} * is for apps with reset-data functionality. * </p> * * <p> * In some special use cases, where an app interacts with * its Task stack, the app may use the * {@link android.app.ActivityManager.AppTask} and * {@link android.app.ActivityManager.RecentTaskInfo} inner * classes. However, in general, the methods in this class should * be used for testing and debugging purposes only. * </p> */ @SystemService(Context.ACTIVITY_SERVICE) public class ActivityManager { private static String TAG = "ActivityManager"; private static int gMaxRecentTasks = -1; @UnsupportedAppUsage private final Context mContext; private static volatile boolean sSystemReady = false; private static final int FIRST_START_FATAL_ERROR_CODE = -100; private static final int LAST_START_FATAL_ERROR_CODE = -1; private static final int FIRST_START_SUCCESS_CODE = 0; private static final int LAST_START_SUCCESS_CODE = 99; private static final int FIRST_START_NON_FATAL_ERROR_CODE = 100; private static final int LAST_START_NON_FATAL_ERROR_CODE = 199; static final class UidObserver extends IUidObserver.Stub { final OnUidImportanceListener mListener; final Context mContext; UidObserver(OnUidImportanceListener listener, Context clientContext) { mListener = listener; mContext = clientContext; } @Override public void onUidStateChanged(int uid, int procState, long procStateSeq) { mListener.onUidImportance(uid, RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext)); } @Override public void onUidGone(int uid, boolean disabled) { mListener.onUidImportance(uid, RunningAppProcessInfo.IMPORTANCE_GONE); } @Override public void onUidActive(int uid) { } @Override public void onUidIdle(int uid, boolean disabled) { } @Override public void onUidCachedChanged(int uid, boolean cached) { } } final ArrayMap<OnUidImportanceListener, UidObserver> mImportanceListeners = new ArrayMap<>(); /** * Defines acceptable types of bugreports. * @hide */ @Retention(RetentionPolicy.SOURCE) @IntDef(prefix = { "BUGREPORT_OPTION_" }, value = { BUGREPORT_OPTION_FULL, BUGREPORT_OPTION_INTERACTIVE, BUGREPORT_OPTION_REMOTE, BUGREPORT_OPTION_WEAR, BUGREPORT_OPTION_TELEPHONY, BUGREPORT_OPTION_WIFI }) public @interface BugreportMode { } /** * Takes a bugreport without user interference (and hence causing less * interference to the system), but includes all sections. * @hide */ public static final int BUGREPORT_OPTION_FULL = 0; /** * Allows user to monitor progress and enter additional data; might not include all * sections. * @hide */ public static final int BUGREPORT_OPTION_INTERACTIVE = 1; /** * Takes a bugreport requested remotely by administrator of the Device Owner app, * not the device's user. * @hide */ public static final int BUGREPORT_OPTION_REMOTE = 2; /** * Takes a bugreport on a wearable device. * @hide */ public static final int BUGREPORT_OPTION_WEAR = 3; /** * Takes a lightweight version of bugreport that only includes a few, urgent sections * used to report telephony bugs. * @hide */ public static final int BUGREPORT_OPTION_TELEPHONY = 4; /** * Takes a lightweight bugreport that only includes a few sections related to Wifi. * @hide */ public static final int BUGREPORT_OPTION_WIFI = 5; /** * <a href="{@docRoot}guide/topics/manifest/meta-data-element.html">{@code * <meta-data>}</a> name for a 'home' Activity that declares a package that is to be * uninstalled in lieu of the declaring one. The package named here must be * signed with the same certificate as the one declaring the {@code <meta-data>}. */ public static final String META_HOME_ALTERNATE = "android.app.home.alternate"; // NOTE: Before adding a new start result, please reference the defined ranges to ensure the // result is properly categorized. /** * Result for IActivityManager.startVoiceActivity: active session is currently hidden. * @hide */ public static final int START_VOICE_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE; /** * Result for IActivityManager.startVoiceActivity: active session does not match * the requesting token. * @hide */ public static final int START_VOICE_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 1; /** * Result for IActivityManager.startActivity: trying to start a background user * activity that shouldn't be displayed for all users. * @hide */ public static final int START_NOT_CURRENT_USER_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 2; /** * Result for IActivityManager.startActivity: trying to start an activity under voice * control when that activity does not support the VOICE category. * @hide */ public static final int START_NOT_VOICE_COMPATIBLE = FIRST_START_FATAL_ERROR_CODE + 3; /** * Result for IActivityManager.startActivity: an error where the * start had to be canceled. * @hide */ public static final int START_CANCELED = FIRST_START_FATAL_ERROR_CODE + 4; /** * Result for IActivityManager.startActivity: an error where the * thing being started is not an activity. * @hide */ public static final int START_NOT_ACTIVITY = FIRST_START_FATAL_ERROR_CODE + 5; /** * Result for IActivityManager.startActivity: an error where the * caller does not have permission to start the activity. * @hide */ public static final int START_PERMISSION_DENIED = FIRST_START_FATAL_ERROR_CODE + 6; /** * Result for IActivityManager.startActivity: an error where the * caller has requested both to forward a result and to receive * a result. * @hide */ public static final int START_FORWARD_AND_REQUEST_CONFLICT = FIRST_START_FATAL_ERROR_CODE + 7; /** * Result for IActivityManager.startActivity: an error where the * requested class is not found. * @hide */ public static final int START_CLASS_NOT_FOUND = FIRST_START_FATAL_ERROR_CODE + 8; /** * Result for IActivityManager.startActivity: an error where the * given Intent could not be resolved to an activity. * @hide */ public static final int START_INTENT_NOT_RESOLVED = FIRST_START_FATAL_ERROR_CODE + 9; /** * Result for IActivityManager.startAssistantActivity: active session is currently hidden. * @hide */ public static final int START_ASSISTANT_HIDDEN_SESSION = FIRST_START_FATAL_ERROR_CODE + 10; /** * Result for IActivityManager.startAssistantActivity: active session does not match * the requesting token. * @hide */ public static final int START_ASSISTANT_NOT_ACTIVE_SESSION = FIRST_START_FATAL_ERROR_CODE + 11; /** * Result for IActivityManaqer.startActivity: the activity was started * successfully as normal. * @hide */ public static final int START_SUCCESS = FIRST_START_SUCCESS_CODE; /** * Result for IActivityManaqer.startActivity: the caller asked that the Intent not * be executed if it is the recipient, and that is indeed the case. * @hide */ public static final int START_RETURN_INTENT_TO_CALLER = FIRST_START_SUCCESS_CODE + 1; /** * Result for IActivityManaqer.startActivity: activity wasn't really started, but * a task was simply brought to the foreground. * @hide */ public static final int START_TASK_TO_FRONT = FIRST_START_SUCCESS_CODE + 2; /** * Result for IActivityManaqer.startActivity: activity wasn't really started, but * the given Intent was given to the existing top activity. * @hide */ public static final int START_DELIVERED_TO_TOP = FIRST_START_SUCCESS_CODE + 3; /** * Result for IActivityManaqer.startActivity: request was canceled because * app switches are temporarily canceled to ensure the user's last request * (such as pressing home) is performed. * @hide */ public static final int START_SWITCHES_CANCELED = FIRST_START_NON_FATAL_ERROR_CODE; /** * Result for IActivityManaqer.startActivity: a new activity was attempted to be started * while in Lock Task Mode. * @hide */ public static final int START_RETURN_LOCK_TASK_MODE_VIOLATION = FIRST_START_NON_FATAL_ERROR_CODE + 1; /** * Result for IActivityManaqer.startActivity: a new activity start was aborted. Never returned * externally. * @hide */ public static final int START_ABORTED = FIRST_START_NON_FATAL_ERROR_CODE + 2; /** * Flag for IActivityManaqer.startActivity: do special start mode where * a new activity is launched only if it is needed. * @hide */ public static final int START_FLAG_ONLY_IF_NEEDED = 1 << 0; /** * Flag for IActivityManaqer.startActivity: launch the app for * debugging. * @hide */ public static final int START_FLAG_DEBUG = 1 << 1; /** * Flag for IActivityManaqer.startActivity: launch the app for * allocation tracking. * @hide */ public static final int START_FLAG_TRACK_ALLOCATION = 1 << 2; /** * Flag for IActivityManaqer.startActivity: launch the app with * native debugging support. * @hide */ public static final int START_FLAG_NATIVE_DEBUGGING = 1 << 3; /** * Result for IActivityManaqer.broadcastIntent: success! * @hide */ public static final int BROADCAST_SUCCESS = 0; /** * Result for IActivityManaqer.broadcastIntent: attempt to broadcast * a sticky intent without appropriate permission. * @hide */ public static final int BROADCAST_STICKY_CANT_HAVE_PERMISSION = -1; /** * Result for IActivityManager.broadcastIntent: trying to send a broadcast * to a stopped user. Fail. * @hide */ public static final int BROADCAST_FAILED_USER_STOPPED = -2; /** * Type for IActivityManaqer.getIntentSender: this PendingIntent is * for a sendBroadcast operation. * @hide */ public static final int INTENT_SENDER_BROADCAST = 1; /** * Type for IActivityManaqer.getIntentSender: this PendingIntent is * for a startActivity operation. * @hide */ @UnsupportedAppUsage public static final int INTENT_SENDER_ACTIVITY = 2; /** * Type for IActivityManaqer.getIntentSender: this PendingIntent is * for an activity result operation. * @hide */ public static final int INTENT_SENDER_ACTIVITY_RESULT = 3; /** * Type for IActivityManaqer.getIntentSender: this PendingIntent is * for a startService operation. * @hide */ public static final int INTENT_SENDER_SERVICE = 4; /** * Type for IActivityManaqer.getIntentSender: this PendingIntent is * for a startForegroundService operation. * @hide */ public static final int INTENT_SENDER_FOREGROUND_SERVICE = 5; /** @hide User operation call: success! */ public static final int USER_OP_SUCCESS = 0; /** @hide User operation call: given user id is not known. */ public static final int USER_OP_UNKNOWN_USER = -1; /** @hide User operation call: given user id is the current user, can't be stopped. */ public static final int USER_OP_IS_CURRENT = -2; /** @hide User operation call: system user can't be stopped. */ public static final int USER_OP_ERROR_IS_SYSTEM = -3; /** @hide User operation call: one of related users cannot be stopped. */ public static final int USER_OP_ERROR_RELATED_USERS_CANNOT_STOP = -4; /** * @hide * Process states, describing the kind of state a particular process is in. * When updating these, make sure to also check all related references to the * constant in code, and update these arrays: * * @see com.android.internal.app.procstats.ProcessState#PROCESS_STATE_TO_STATE * @see com.android.server.am.ProcessList#sProcStateToProcMem * @see com.android.server.am.ProcessList#sFirstAwakePssTimes * @see com.android.server.am.ProcessList#sSameAwakePssTimes * @see com.android.server.am.ProcessList#sTestFirstPssTimes * @see com.android.server.am.ProcessList#sTestSamePssTimes */ /** @hide Not a real process state. */ public static final int PROCESS_STATE_UNKNOWN = -1; /** @hide Process is a persistent system process. */ public static final int PROCESS_STATE_PERSISTENT = 0; /** @hide Process is a persistent system process and is doing UI. */ public static final int PROCESS_STATE_PERSISTENT_UI = 1; /** @hide Process is hosting the current top activities. Note that this covers * all activities that are visible to the user. */ @UnsupportedAppUsage public static final int PROCESS_STATE_TOP = 2; /** @hide Process is hosting a foreground service. */ @UnsupportedAppUsage public static final int PROCESS_STATE_FOREGROUND_SERVICE = 3; /** @hide Process is hosting a foreground service due to a system binding. */ @UnsupportedAppUsage public static final int PROCESS_STATE_BOUND_FOREGROUND_SERVICE = 4; /** @hide Process is important to the user, and something they are aware of. */ public static final int PROCESS_STATE_IMPORTANT_FOREGROUND = 5; /** @hide Process is important to the user, but not something they are aware of. */ @UnsupportedAppUsage public static final int PROCESS_STATE_IMPORTANT_BACKGROUND = 6; /** @hide Process is in the background transient so we will try to keep running. */ public static final int PROCESS_STATE_TRANSIENT_BACKGROUND = 7; /** @hide Process is in the background running a backup/restore operation. */ public static final int PROCESS_STATE_BACKUP = 8; /** @hide Process is in the background running a service. Unlike oom_adj, this level * is used for both the normal running in background state and the executing * operations state. */ @UnsupportedAppUsage public static final int PROCESS_STATE_SERVICE = 9; /** @hide Process is in the background running a receiver. Note that from the * perspective of oom_adj, receivers run at a higher foreground level, but for our * prioritization here that is not necessary and putting them below services means * many fewer changes in some process states as they receive broadcasts. */ @UnsupportedAppUsage public static final int PROCESS_STATE_RECEIVER = 10; /** @hide Same as {@link #PROCESS_STATE_TOP} but while device is sleeping. */ public static final int PROCESS_STATE_TOP_SLEEPING = 11; /** @hide Process is in the background, but it can't restore its state so we want * to try to avoid killing it. */ public static final int PROCESS_STATE_HEAVY_WEIGHT = 12; /** @hide Process is in the background but hosts the home activity. */ @UnsupportedAppUsage public static final int PROCESS_STATE_HOME = 13; /** @hide Process is in the background but hosts the last shown activity. */ public static final int PROCESS_STATE_LAST_ACTIVITY = 14; /** @hide Process is being cached for later use and contains activities. */ @UnsupportedAppUsage public static final int PROCESS_STATE_CACHED_ACTIVITY = 15; /** @hide Process is being cached for later use and is a client of another cached * process that contains activities. */ public static final int PROCESS_STATE_CACHED_ACTIVITY_CLIENT = 16; /** @hide Process is being cached for later use and has an activity that corresponds * to an existing recent task. */ public static final int PROCESS_STATE_CACHED_RECENT = 17; /** @hide Process is being cached for later use and is empty. */ public static final int PROCESS_STATE_CACHED_EMPTY = 18; /** @hide Process does not exist. */ public static final int PROCESS_STATE_NONEXISTENT = 19; // NOTE: If PROCESS_STATEs are added, then new fields must be added // to frameworks/base/core/proto/android/app/enums.proto and the following method must // be updated to correctly map between them. // However, if the current ActivityManager values are merely modified, no update should be made // to enums.proto, to which values can only be added but never modified. Note that the proto // versions do NOT have the ordering restrictions of the ActivityManager process state. /** * Maps ActivityManager.PROCESS_STATE_ values to enums.proto ProcessStateEnum value. * * @param amInt a process state of the form ActivityManager.PROCESS_STATE_ * @return the value of the corresponding enums.proto ProcessStateEnum value. * @hide */ public static final int processStateAmToProto(int amInt) { switch (amInt) { case PROCESS_STATE_UNKNOWN: return AppProtoEnums.PROCESS_STATE_UNKNOWN; case PROCESS_STATE_PERSISTENT: return AppProtoEnums.PROCESS_STATE_PERSISTENT; case PROCESS_STATE_PERSISTENT_UI: return AppProtoEnums.PROCESS_STATE_PERSISTENT_UI; case PROCESS_STATE_TOP: return AppProtoEnums.PROCESS_STATE_TOP; case PROCESS_STATE_FOREGROUND_SERVICE: return AppProtoEnums.PROCESS_STATE_FOREGROUND_SERVICE; case PROCESS_STATE_BOUND_FOREGROUND_SERVICE: return AppProtoEnums.PROCESS_STATE_BOUND_FOREGROUND_SERVICE; case PROCESS_STATE_IMPORTANT_FOREGROUND: return AppProtoEnums.PROCESS_STATE_IMPORTANT_FOREGROUND; case PROCESS_STATE_IMPORTANT_BACKGROUND: return AppProtoEnums.PROCESS_STATE_IMPORTANT_BACKGROUND; case PROCESS_STATE_TRANSIENT_BACKGROUND: return AppProtoEnums.PROCESS_STATE_TRANSIENT_BACKGROUND; case PROCESS_STATE_BACKUP: return AppProtoEnums.PROCESS_STATE_BACKUP; case PROCESS_STATE_SERVICE: return AppProtoEnums.PROCESS_STATE_SERVICE; case PROCESS_STATE_RECEIVER: return AppProtoEnums.PROCESS_STATE_RECEIVER; case PROCESS_STATE_TOP_SLEEPING: return AppProtoEnums.PROCESS_STATE_TOP_SLEEPING; case PROCESS_STATE_HEAVY_WEIGHT: return AppProtoEnums.PROCESS_STATE_HEAVY_WEIGHT; case PROCESS_STATE_HOME: return AppProtoEnums.PROCESS_STATE_HOME; case PROCESS_STATE_LAST_ACTIVITY: return AppProtoEnums.PROCESS_STATE_LAST_ACTIVITY; case PROCESS_STATE_CACHED_ACTIVITY: return AppProtoEnums.PROCESS_STATE_CACHED_ACTIVITY; case PROCESS_STATE_CACHED_ACTIVITY_CLIENT: return AppProtoEnums.PROCESS_STATE_CACHED_ACTIVITY_CLIENT; case PROCESS_STATE_CACHED_RECENT: return AppProtoEnums.PROCESS_STATE_CACHED_RECENT; case PROCESS_STATE_CACHED_EMPTY: return AppProtoEnums.PROCESS_STATE_CACHED_EMPTY; case PROCESS_STATE_NONEXISTENT: return AppProtoEnums.PROCESS_STATE_NONEXISTENT; default: // ActivityManager process state (amInt) // could not be mapped to an AppProtoEnums ProcessState state. return AppProtoEnums.PROCESS_STATE_UNKNOWN_TO_PROTO; } } /** @hide The lowest process state number */ public static final int MIN_PROCESS_STATE = PROCESS_STATE_PERSISTENT; /** @hide The highest process state number */ public static final int MAX_PROCESS_STATE = PROCESS_STATE_NONEXISTENT; /** @hide Should this process state be considered a background state? */ public static final boolean isProcStateBackground(int procState) { return procState >= PROCESS_STATE_TRANSIENT_BACKGROUND; } /** @hide requestType for assist context: only basic information. */ public static final int ASSIST_CONTEXT_BASIC = 0; /** @hide requestType for assist context: generate full AssistStructure. */ public static final int ASSIST_CONTEXT_FULL = 1; /** @hide requestType for assist context: generate full AssistStructure for autofill. */ public static final int ASSIST_CONTEXT_AUTOFILL = 2; /** @hide Flag for registerUidObserver: report changes in process state. */ public static final int UID_OBSERVER_PROCSTATE = 1 << 0; /** @hide Flag for registerUidObserver: report uid gone. */ public static final int UID_OBSERVER_GONE = 1 << 1; /** @hide Flag for registerUidObserver: report uid has become idle. */ public static final int UID_OBSERVER_IDLE = 1 << 2; /** @hide Flag for registerUidObserver: report uid has become active. */ public static final int UID_OBSERVER_ACTIVE = 1 << 3; /** @hide Flag for registerUidObserver: report uid cached state has changed. */ public static final int UID_OBSERVER_CACHED = 1 << 4; /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: normal free-to-run operation. */ public static final int APP_START_MODE_NORMAL = 0; /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later. */ public static final int APP_START_MODE_DELAYED = 1; /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: delay running until later, with * rigid errors (throwing exception). */ public static final int APP_START_MODE_DELAYED_RIGID = 2; /** @hide Mode for {@link IActivityManager#isAppStartModeDisabled}: disable/cancel pending * launches; this is the mode for ephemeral apps. */ public static final int APP_START_MODE_DISABLED = 3; /** * Lock task mode is not active. */ public static final int LOCK_TASK_MODE_NONE = 0; /** * Full lock task mode is active. */ public static final int LOCK_TASK_MODE_LOCKED = 1; /** * App pinning mode is active. */ public static final int LOCK_TASK_MODE_PINNED = 2; Point mAppTaskThumbnailSize; @UnsupportedAppUsage /*package*/ ActivityManager(Context context, Handler handler) { mContext = context; } /** * Returns whether the launch was successful. * @hide */ public static final boolean isStartResultSuccessful(int result) { return FIRST_START_SUCCESS_CODE <= result && result <= LAST_START_SUCCESS_CODE; } /** * Returns whether the launch result was a fatal error. * @hide */ public static final boolean isStartResultFatalError(int result) { return FIRST_START_FATAL_ERROR_CODE <= result && result <= LAST_START_FATAL_ERROR_CODE; } /** * Screen compatibility mode: the application most always run in * compatibility mode. * @hide */ public static final int COMPAT_MODE_ALWAYS = -1; /** * Screen compatibility mode: the application can never run in * compatibility mode. * @hide */ public static final int COMPAT_MODE_NEVER = -2; /** * Screen compatibility mode: unknown. * @hide */ public static final int COMPAT_MODE_UNKNOWN = -3; /** * Screen compatibility mode: the application currently has compatibility * mode disabled. * @hide */ public static final int COMPAT_MODE_DISABLED = 0; /** * Screen compatibility mode: the application currently has compatibility * mode enabled. * @hide */ public static final int COMPAT_MODE_ENABLED = 1; /** * Screen compatibility mode: request to toggle the application's * compatibility mode. * @hide */ public static final int COMPAT_MODE_TOGGLE = 2; private static final boolean DEVELOPMENT_FORCE_LOW_RAM = SystemProperties.getBoolean("debug.force_low_ram", false); /** @hide */ @TestApi public static class StackId { private StackId() { } /** Invalid stack ID. */ public static final int INVALID_STACK_ID = -1; } /** * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} * which specifies the position of the created docked stack at the top half of the screen if * in portrait mode or at the left half of the screen if in landscape mode. * @hide */ @TestApi public static final int SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT = 0; /** * Parameter to {@link android.app.IActivityManager#setTaskWindowingModeSplitScreenPrimary} * which * specifies the position of the created docked stack at the bottom half of the screen if * in portrait mode or at the right half of the screen if in landscape mode. * @hide */ @TestApi public static final int SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT = 1; /** * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates * that the resize doesn't need to preserve the window, and can be skipped if bounds * is unchanged. This mode is used by window manager in most cases. * @hide */ public static final int RESIZE_MODE_SYSTEM = 0; /** * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates * that the resize should preserve the window if possible. * @hide */ public static final int RESIZE_MODE_PRESERVE_WINDOW = (0x1 << 0); /** * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates * that the resize should be performed even if the bounds appears unchanged. * @hide */ public static final int RESIZE_MODE_FORCED = (0x1 << 1); /** * Input parameter to {@link android.app.IActivityManager#resizeTask} used by window * manager during a screen rotation. * @hide */ public static final int RESIZE_MODE_SYSTEM_SCREEN_ROTATION = RESIZE_MODE_PRESERVE_WINDOW; /** * Input parameter to {@link android.app.IActivityManager#resizeTask} used when the * resize is due to a drag action. * @hide */ public static final int RESIZE_MODE_USER = RESIZE_MODE_PRESERVE_WINDOW; /** * Input parameter to {@link android.app.IActivityManager#resizeTask} which indicates * that the resize should preserve the window if possible, and should not be skipped * even if the bounds is unchanged. Usually used to force a resizing when a drag action * is ending. * @hide */ public static final int RESIZE_MODE_USER_FORCED = RESIZE_MODE_PRESERVE_WINDOW | RESIZE_MODE_FORCED; /** @hide */ public int getFrontActivityScreenCompatMode() { try { return getService().getFrontActivityScreenCompatMode(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** @hide */ public void setFrontActivityScreenCompatMode(int mode) { try { getService().setFrontActivityScreenCompatMode(mode); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** @hide */ public int getPackageScreenCompatMode(String packageName) { try { return getService().getPackageScreenCompatMode(packageName); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** @hide */ public void setPackageScreenCompatMode(String packageName, int mode) { try { getService().setPackageScreenCompatMode(packageName, mode); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** @hide */ public boolean getPackageAskScreenCompat(String packageName) { try { return getService().getPackageAskScreenCompat(packageName); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** @hide */ public void setPackageAskScreenCompat(String packageName, boolean ask) { try { getService().setPackageAskScreenCompat(packageName, ask); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Return the approximate per-application memory class of the current * device. This gives you an idea of how hard a memory limit you should * impose on your application to let the overall system work best. The * returned value is in megabytes; the baseline Android memory class is * 16 (which happens to be the Java heap limit of those devices); some * devices with more memory may return 24 or even higher numbers. */ public int getMemoryClass() { return staticGetMemoryClass(); } /** @hide */ @UnsupportedAppUsage static public int staticGetMemoryClass() { // Really brain dead right now -- just take this from the configured // vm heap size, and assume it is in megabytes and thus ends with "m". String vmHeapSize = SystemProperties.get("dalvik.vm.heapgrowthlimit", ""); if (vmHeapSize != null && !"".equals(vmHeapSize)) { return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); } return staticGetLargeMemoryClass(); } /** * Return the approximate per-application memory class of the current * device when an application is running with a large heap. This is the * space available for memory-intensive applications; most applications * should not need this amount of memory, and should instead stay with the * {@link #getMemoryClass()} limit. The returned value is in megabytes. * This may be the same size as {@link #getMemoryClass()} on memory * constrained devices, or it may be significantly larger on devices with * a large amount of available RAM. * * <p>This is the size of the application's Dalvik heap if it has * specified <code>android:largeHeap="true"</code> in its manifest. */ public int getLargeMemoryClass() { return staticGetLargeMemoryClass(); } /** @hide */ static public int staticGetLargeMemoryClass() { // Really brain dead right now -- just take this from the configured // vm heap size, and assume it is in megabytes and thus ends with "m". String vmHeapSize = SystemProperties.get("dalvik.vm.heapsize", "16m"); return Integer.parseInt(vmHeapSize.substring(0, vmHeapSize.length() - 1)); } /** * Returns true if this is a low-RAM device. Exactly whether a device is low-RAM * is ultimately up to the device configuration, but currently it generally means * something with 1GB or less of RAM. This is mostly intended to be used by apps * to determine whether they should turn off certain features that require more RAM. */ public boolean isLowRamDevice() { return isLowRamDeviceStatic(); } /** @hide */ @UnsupportedAppUsage public static boolean isLowRamDeviceStatic() { return RoSystemProperties.CONFIG_LOW_RAM || (Build.IS_DEBUGGABLE && DEVELOPMENT_FORCE_LOW_RAM); } /** * Returns true if this is a small battery device. Exactly whether a device is considered to be * small battery is ultimately up to the device configuration, but currently it generally means * something in the class of a device with 1000 mAh or less. This is mostly intended to be used * to determine whether certain features should be altered to account for a drastically smaller * battery. * @hide */ public static boolean isSmallBatteryDevice() { return RoSystemProperties.CONFIG_SMALL_BATTERY; } /** * Used by persistent processes to determine if they are running on a * higher-end device so should be okay using hardware drawing acceleration * (which tends to consume a lot more RAM). * @hide */ @UnsupportedAppUsage static public boolean isHighEndGfx() { return !isLowRamDeviceStatic() && !RoSystemProperties.CONFIG_AVOID_GFX_ACCEL && !Resources.getSystem().getBoolean(com.android.internal.R.bool.config_avoidGfxAccel); } /** * Return the total number of bytes of RAM this device has. * @hide */ @TestApi public long getTotalRam() { MemInfoReader memreader = new MemInfoReader(); memreader.readMemInfo(); return memreader.getTotalSize(); } /** * Return the maximum number of recents entries that we will maintain and show. * @hide */ @UnsupportedAppUsage static public int getMaxRecentTasksStatic() { if (gMaxRecentTasks < 0) { return gMaxRecentTasks = isLowRamDeviceStatic() ? 36 : 48; } return gMaxRecentTasks; } /** * Return the default limit on the number of recents that an app can make. * @hide */ static public int getDefaultAppRecentsLimitStatic() { return getMaxRecentTasksStatic() / 6; } /** * Return the maximum limit on the number of recents that an app can make. * @hide */ static public int getMaxAppRecentsLimitStatic() { return getMaxRecentTasksStatic() / 2; } /** * Returns true if the system supports at least one form of multi-window. * E.g. freeform, split-screen, picture-in-picture. * @hide */ @TestApi static public boolean supportsMultiWindow(Context context) { // On watches, multi-window is used to present essential system UI, and thus it must be // supported regardless of device memory characteristics. boolean isWatch = context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH); return (!isLowRamDeviceStatic() || isWatch) && Resources.getSystem().getBoolean(com.android.internal.R.bool.config_supportsMultiWindow); } /** * Returns true if the system supports split screen multi-window. * @hide */ @TestApi static public boolean supportsSplitScreenMultiWindow(Context context) { return supportsMultiWindow(context) && Resources.getSystem() .getBoolean(com.android.internal.R.bool.config_supportsSplitScreenMultiWindow); } /** @removed */ @Deprecated public static int getMaxNumPictureInPictureActions() { return 3; } /** * Information you can set and retrieve about the current activity within the recent task list. */ public static class TaskDescription implements Parcelable { /** @hide */ public static final String ATTR_TASKDESCRIPTION_PREFIX = "task_description_"; private static final String ATTR_TASKDESCRIPTIONLABEL = ATTR_TASKDESCRIPTION_PREFIX + "label"; private static final String ATTR_TASKDESCRIPTIONCOLOR_PRIMARY = ATTR_TASKDESCRIPTION_PREFIX + "color"; private static final String ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND = ATTR_TASKDESCRIPTION_PREFIX + "colorBackground"; private static final String ATTR_TASKDESCRIPTIONICON_FILENAME = ATTR_TASKDESCRIPTION_PREFIX + "icon_filename"; private static final String ATTR_TASKDESCRIPTIONICON_RESOURCE = ATTR_TASKDESCRIPTION_PREFIX + "icon_resource"; private String mLabel; private Bitmap mIcon; private int mIconRes; private String mIconFilename; private int mColorPrimary; private int mColorBackground; private int mStatusBarColor; private int mNavigationBarColor; /** * Creates the TaskDescription to the specified values. * * @param label A label and description of the current state of this task. * @param icon An icon that represents the current state of this task. * @param colorPrimary A color to override the theme's primary color. This color must be * opaque. * @deprecated use TaskDescription constructor with icon resource instead */ @Deprecated public TaskDescription(String label, Bitmap icon, int colorPrimary) { this(label, icon, 0, null, colorPrimary, 0, 0, 0); if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { throw new RuntimeException("A TaskDescription's primary color should be opaque"); } } /** * Creates the TaskDescription to the specified values. * * @param label A label and description of the current state of this task. * @param iconRes A drawable resource of an icon that represents the current state of this * activity. * @param colorPrimary A color to override the theme's primary color. This color must be * opaque. */ public TaskDescription(String label, @DrawableRes int iconRes, int colorPrimary) { this(label, null, iconRes, null, colorPrimary, 0, 0, 0); if ((colorPrimary != 0) && (Color.alpha(colorPrimary) != 255)) { throw new RuntimeException("A TaskDescription's primary color should be opaque"); } } /** * Creates the TaskDescription to the specified values. * * @param label A label and description of the current state of this activity. * @param icon An icon that represents the current state of this activity. * @deprecated use TaskDescription constructor with icon resource instead */ @Deprecated public TaskDescription(String label, Bitmap icon) { this(label, icon, 0, null, 0, 0, 0, 0); } /** * Creates the TaskDescription to the specified values. * * @param label A label and description of the current state of this activity. * @param iconRes A drawable resource of an icon that represents the current state of this * activity. */ public TaskDescription(String label, @DrawableRes int iconRes) { this(label, null, iconRes, null, 0, 0, 0, 0); } /** * Creates the TaskDescription to the specified values. * * @param label A label and description of the current state of this activity. */ public TaskDescription(String label) { this(label, null, 0, null, 0, 0, 0, 0); } /** * Creates an empty TaskDescription. */ public TaskDescription() { this(null, null, 0, null, 0, 0, 0, 0); } /** @hide */ public TaskDescription(String label, Bitmap bitmap, int iconRes, String iconFilename, int colorPrimary, int colorBackground, int statusBarColor, int navigationBarColor) { mLabel = label; mIcon = bitmap; mIconRes = iconRes; mIconFilename = iconFilename; mColorPrimary = colorPrimary; mColorBackground = colorBackground; mStatusBarColor = statusBarColor; mNavigationBarColor = navigationBarColor; } /** * Creates a copy of another TaskDescription. */ public TaskDescription(TaskDescription td) { copyFrom(td); } /** * Copies this the values from another TaskDescription. * @hide */ public void copyFrom(TaskDescription other) { mLabel = other.mLabel; mIcon = other.mIcon; mIconRes = other.mIconRes; mIconFilename = other.mIconFilename; mColorPrimary = other.mColorPrimary; mColorBackground = other.mColorBackground; mStatusBarColor = other.mStatusBarColor; mNavigationBarColor = other.mNavigationBarColor; } /** * Copies this the values from another TaskDescription, but preserves the hidden fields * if they weren't set on {@code other} * @hide */ public void copyFromPreserveHiddenFields(TaskDescription other) { mLabel = other.mLabel; mIcon = other.mIcon; mIconRes = other.mIconRes; mIconFilename = other.mIconFilename; mColorPrimary = other.mColorPrimary; if (other.mColorBackground != 0) { mColorBackground = other.mColorBackground; } if (other.mStatusBarColor != 0) { mStatusBarColor = other.mStatusBarColor; } if (other.mNavigationBarColor != 0) { mNavigationBarColor = other.mNavigationBarColor; } } private TaskDescription(Parcel source) { readFromParcel(source); } /** * Sets the label for this task description. * @hide */ public void setLabel(String label) { mLabel = label; } /** * Sets the primary color for this task description. * @hide */ public void setPrimaryColor(int primaryColor) { // Ensure that the given color is valid if ((primaryColor != 0) && (Color.alpha(primaryColor) != 255)) { throw new RuntimeException("A TaskDescription's primary color should be opaque"); } mColorPrimary = primaryColor; } /** * Sets the background color for this task description. * @hide */ public void setBackgroundColor(int backgroundColor) { // Ensure that the given color is valid if ((backgroundColor != 0) && (Color.alpha(backgroundColor) != 255)) { throw new RuntimeException("A TaskDescription's background color should be opaque"); } mColorBackground = backgroundColor; } /** * @hide */ public void setStatusBarColor(int statusBarColor) { mStatusBarColor = statusBarColor; } /** * @hide */ public void setNavigationBarColor(int navigationBarColor) { mNavigationBarColor = navigationBarColor; } /** * Sets the icon for this task description. * @hide */ @UnsupportedAppUsage public void setIcon(Bitmap icon) { mIcon = icon; } /** * Sets the icon resource for this task description. * @hide */ public void setIcon(int iconRes) { mIconRes = iconRes; } /** * Moves the icon bitmap reference from an actual Bitmap to a file containing the * bitmap. * @hide */ public void setIconFilename(String iconFilename) { mIconFilename = iconFilename; mIcon = null; } /** * @return The label and description of the current state of this task. */ public String getLabel() { return mLabel; } /** * @return The icon that represents the current state of this task. */ public Bitmap getIcon() { if (mIcon != null) { return mIcon; } return loadTaskDescriptionIcon(mIconFilename, UserHandle.myUserId()); } /** @hide */ @TestApi public int getIconResource() { return mIconRes; } /** @hide */ @TestApi public String getIconFilename() { return mIconFilename; } /** @hide */ @UnsupportedAppUsage public Bitmap getInMemoryIcon() { return mIcon; } /** @hide */ @UnsupportedAppUsage public static Bitmap loadTaskDescriptionIcon(String iconFilename, int userId) { if (iconFilename != null) { try { return getService().getTaskDescriptionIcon(iconFilename, userId); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } return null; } /** * @return The color override on the theme's primary color. */ public int getPrimaryColor() { return mColorPrimary; } /** * @return The background color. * @hide */ @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) public int getBackgroundColor() { return mColorBackground; } /** * @hide */ public int getStatusBarColor() { return mStatusBarColor; } /** * @hide */ public int getNavigationBarColor() { return mNavigationBarColor; } /** @hide */ public void saveToXml(XmlSerializer out) throws IOException { if (mLabel != null) { out.attribute(null, ATTR_TASKDESCRIPTIONLABEL, mLabel); } if (mColorPrimary != 0) { out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_PRIMARY, Integer.toHexString(mColorPrimary)); } if (mColorBackground != 0) { out.attribute(null, ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND, Integer.toHexString(mColorBackground)); } if (mIconFilename != null) { out.attribute(null, ATTR_TASKDESCRIPTIONICON_FILENAME, mIconFilename); } if (mIconRes != 0) { out.attribute(null, ATTR_TASKDESCRIPTIONICON_RESOURCE, Integer.toString(mIconRes)); } } /** @hide */ public void restoreFromXml(String attrName, String attrValue) { if (ATTR_TASKDESCRIPTIONLABEL.equals(attrName)) { setLabel(attrValue); } else if (ATTR_TASKDESCRIPTIONCOLOR_PRIMARY.equals(attrName)) { setPrimaryColor((int) Long.parseLong(attrValue, 16)); } else if (ATTR_TASKDESCRIPTIONCOLOR_BACKGROUND.equals(attrName)) { setBackgroundColor((int) Long.parseLong(attrValue, 16)); } else if (ATTR_TASKDESCRIPTIONICON_FILENAME.equals(attrName)) { setIconFilename(attrValue); } else if (ATTR_TASKDESCRIPTIONICON_RESOURCE.equals(attrName)) { setIcon(Integer.parseInt(attrValue, 10)); } } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { if (mLabel == null) { dest.writeInt(0); } else { dest.writeInt(1); dest.writeString(mLabel); } if (mIcon == null) { dest.writeInt(0); } else { dest.writeInt(1); mIcon.writeToParcel(dest, 0); } dest.writeInt(mIconRes); dest.writeInt(mColorPrimary); dest.writeInt(mColorBackground); dest.writeInt(mStatusBarColor); dest.writeInt(mNavigationBarColor); if (mIconFilename == null) { dest.writeInt(0); } else { dest.writeInt(1); dest.writeString(mIconFilename); } } public void readFromParcel(Parcel source) { mLabel = source.readInt() > 0 ? source.readString() : null; mIcon = source.readInt() > 0 ? Bitmap.CREATOR.createFromParcel(source) : null; mIconRes = source.readInt(); mColorPrimary = source.readInt(); mColorBackground = source.readInt(); mStatusBarColor = source.readInt(); mNavigationBarColor = source.readInt(); mIconFilename = source.readInt() > 0 ? source.readString() : null; } public static final Creator<TaskDescription> CREATOR = new Creator<TaskDescription>() { public TaskDescription createFromParcel(Parcel source) { return new TaskDescription(source); } public TaskDescription[] newArray(int size) { return new TaskDescription[size]; } }; @Override public String toString() { return "TaskDescription Label: " + mLabel + " Icon: " + mIcon + " IconRes: " + mIconRes + " IconFilename: " + mIconFilename + " colorPrimary: " + mColorPrimary + " colorBackground: " + mColorBackground + " statusBarColor: " + mColorBackground + " navigationBarColor: " + mNavigationBarColor; } } /** * Information you can retrieve about tasks that the user has most recently * started or visited. */ public static class RecentTaskInfo implements Parcelable { /** * If this task is currently running, this is the identifier for it. * If it is not running, this will be -1. */ public int id; /** * The true identifier of this task, valid even if it is not running. */ public int persistentId; /** * The original Intent used to launch the task. You can use this * Intent to re-launch the task (if it is no longer running) or bring * the current task to the front. */ public Intent baseIntent; /** * If this task was started from an alias, this is the actual * activity component that was initially started; the component of * the baseIntent in this case is the name of the actual activity * implementation that the alias referred to. Otherwise, this is null. */ public ComponentName origActivity; /** * The actual activity component that started the task. * @hide */ @Nullable public ComponentName realActivity; /** * Description of the task's last state. */ public CharSequence description; /** * The id of the ActivityStack this Task was on most recently. * @hide */ @UnsupportedAppUsage public int stackId; /** * The id of the user the task was running as. * @hide */ @UnsupportedAppUsage public int userId; /** * The first time this task was active. * @hide */ @UnsupportedAppUsage public long firstActiveTime; /** * The last time this task was active. * @hide */ @UnsupportedAppUsage public long lastActiveTime; /** * The recent activity values for the highest activity in the stack to have set the values. * {@link Activity#setTaskDescription(android.app.ActivityManager.TaskDescription)}. */ public TaskDescription taskDescription; /** * Task affiliation for grouping with other tasks. */ public int affiliatedTaskId; /** * Task affiliation color of the source task with the affiliated task id. * * @hide */ @UnsupportedAppUsage public int affiliatedTaskColor; /** * The component launched as the first activity in the task. * This can be considered the "application" of this task. */ public ComponentName baseActivity; /** * The activity component at the top of the history stack of the task. * This is what the user is currently doing. */ public ComponentName topActivity; /** * Number of activities in this task. */ public int numActivities; /** * The bounds of the task. * @hide */ public Rect bounds; /** * True if the task can go in the docked stack. * @hide */ @UnsupportedAppUsage public boolean supportsSplitScreenMultiWindow; /** * The resize mode of the task. See {@link ActivityInfo#resizeMode}. * @hide */ @UnsupportedAppUsage public int resizeMode; /** * The current configuration this task is in. * @hide */ @UnsupportedAppUsage final public Configuration configuration = new Configuration(); public RecentTaskInfo() { } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeInt(id); dest.writeInt(persistentId); if (baseIntent != null) { dest.writeInt(1); baseIntent.writeToParcel(dest, 0); } else { dest.writeInt(0); } ComponentName.writeToParcel(origActivity, dest); ComponentName.writeToParcel(realActivity, dest); TextUtils.writeToParcel(description, dest, Parcelable.PARCELABLE_WRITE_RETURN_VALUE); if (taskDescription != null) { dest.writeInt(1); taskDescription.writeToParcel(dest, 0); } else { dest.writeInt(0); } dest.writeInt(stackId); dest.writeInt(userId); dest.writeLong(lastActiveTime); dest.writeInt(affiliatedTaskId); dest.writeInt(affiliatedTaskColor); ComponentName.writeToParcel(baseActivity, dest); ComponentName.writeToParcel(topActivity, dest); dest.writeInt(numActivities); if (bounds != null) { dest.writeInt(1); bounds.writeToParcel(dest, 0); } else { dest.writeInt(0); } dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); dest.writeInt(resizeMode); configuration.writeToParcel(dest, flags); } public void readFromParcel(Parcel source) { id = source.readInt(); persistentId = source.readInt(); baseIntent = source.readInt() > 0 ? Intent.CREATOR.createFromParcel(source) : null; origActivity = ComponentName.readFromParcel(source); realActivity = ComponentName.readFromParcel(source); description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); taskDescription = source.readInt() > 0 ? TaskDescription.CREATOR.createFromParcel(source) : null; stackId = source.readInt(); userId = source.readInt(); lastActiveTime = source.readLong(); affiliatedTaskId = source.readInt(); affiliatedTaskColor = source.readInt(); baseActivity = ComponentName.readFromParcel(source); topActivity = ComponentName.readFromParcel(source); numActivities = source.readInt(); bounds = source.readInt() > 0 ? Rect.CREATOR.createFromParcel(source) : null; supportsSplitScreenMultiWindow = source.readInt() == 1; resizeMode = source.readInt(); configuration.readFromParcel(source); } public static final Creator<RecentTaskInfo> CREATOR = new Creator<RecentTaskInfo>() { public RecentTaskInfo createFromParcel(Parcel source) { return new RecentTaskInfo(source); } public RecentTaskInfo[] newArray(int size) { return new RecentTaskInfo[size]; } }; private RecentTaskInfo(Parcel source) { readFromParcel(source); } } /** * Flag for use with {@link #getRecentTasks}: return all tasks, even those * that have set their * {@link android.content.Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag. */ public static final int RECENT_WITH_EXCLUDED = 0x0001; /** * Provides a list that does not contain any * recent tasks that currently are not available to the user. */ public static final int RECENT_IGNORE_UNAVAILABLE = 0x0002; /** * <p></p>Return a list of the tasks that the user has recently launched, with * the most recent being first and older ones after in order. * * <p><b>Note: this method is only intended for debugging and presenting * task management user interfaces</b>. This should never be used for * core logic in an application, such as deciding between different * behaviors based on the information found here. Such uses are * <em>not</em> supported, and will likely break in the future. For * example, if multiple applications can be actively running at the * same time, assumptions made about the meaning of the data here for * purposes of control flow will be incorrect.</p> * * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method is * no longer available to third party applications: the introduction of * document-centric recents means * it can leak personal information to the caller. For backwards compatibility, * it will still return a small subset of its data: at least the caller's * own tasks (though see {@link #getAppTasks()} for the correct supported * way to retrieve that information), and possibly some other tasks * such as home that are known to not be sensitive. * * @param maxNum The maximum number of entries to return in the list. The * actual number returned may be smaller, depending on how many tasks the * user has started and the maximum number the system can remember. * @param flags Information about what to return. May be any combination * of {@link #RECENT_WITH_EXCLUDED} and {@link #RECENT_IGNORE_UNAVAILABLE}. * * @return Returns a list of RecentTaskInfo records describing each of * the recent tasks. */ @Deprecated public List<RecentTaskInfo> getRecentTasks(int maxNum, int flags) throws SecurityException { try { if (maxNum < 0) { throw new IllegalArgumentException("The requested number of tasks should be >= 0"); } return getService().getRecentTasks(maxNum, flags, mContext.getUserId()).getList(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Information you can retrieve about a particular task that is currently * "running" in the system. Note that a running task does not mean the * given task actually has a process it is actively running in; it simply * means that the user has gone to it and never closed it, but currently * the system may have killed its process and is only holding on to its * last state in order to restart it when the user returns. */ public static class RunningTaskInfo implements Parcelable { /** * A unique identifier for this task. */ public int id; /** * The stack that currently contains this task. * @hide */ public int stackId; /** * The component launched as the first activity in the task. This can * be considered the "application" of this task. */ public ComponentName baseActivity; /** * The activity component at the top of the history stack of the task. * This is what the user is currently doing. */ public ComponentName topActivity; /** * Thumbnail representation of the task's current state. Currently * always null. */ public Bitmap thumbnail; /** * Description of the task's current state. */ public CharSequence description; /** * Number of activities in this task. */ public int numActivities; /** * Number of activities that are currently running (not stopped * and persisted) in this task. */ public int numRunning; /** * Last time task was run. For sorting. * @hide */ public long lastActiveTime; /** * True if the task can go in the docked stack. * @hide */ public boolean supportsSplitScreenMultiWindow; /** * The resize mode of the task. See {@link ActivityInfo#resizeMode}. * @hide */ public int resizeMode; /** * The full configuration the task is currently running in. * @hide */ final public Configuration configuration = new Configuration(); public RunningTaskInfo() { } public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int flags) { dest.writeInt(id); dest.writeInt(stackId); ComponentName.writeToParcel(baseActivity, dest); ComponentName.writeToParcel(topActivity, dest); if (thumbnail != null) { dest.writeInt(1); thumbnail.writeToParcel(dest, 0); } else { dest.writeInt(0); } TextUtils.writeToParcel(description, dest, Parcelable.PARCELABLE_WRITE_RETURN_VALUE); dest.writeInt(numActivities); dest.writeInt(numRunning); dest.writeInt(supportsSplitScreenMultiWindow ? 1 : 0); dest.writeInt(resizeMode); configuration.writeToParcel(dest, flags); } public void readFromParcel(Parcel source) { id = source.readInt(); stackId = source.readInt(); baseActivity = ComponentName.readFromParcel(source); topActivity = ComponentName.readFromParcel(source); if (source.readInt() != 0) { thumbnail = Bitmap.CREATOR.createFromParcel(source); } else { thumbnail = null; } description = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source); numActivities = source.readInt(); numRunning = source.readInt(); supportsSplitScreenMultiWindow = source.readInt() != 0; resizeMode = source.readInt(); configuration.readFromParcel(source); } public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() { public RunningTaskInfo createFromParcel(Parcel source) { return new RunningTaskInfo(source); } public RunningTaskInfo[] newArray(int size) { return new RunningTaskInfo[size]; } }; private RunningTaskInfo(Parcel source) { readFromParcel(source); } } /** * Get the list of tasks associated with the calling application. * * @return The list of tasks associated with the application making this call. * @throws SecurityException */ public List<ActivityManager.AppTask> getAppTasks() { ArrayList<AppTask> tasks = new ArrayList<AppTask>(); List<IBinder> appTasks; try { appTasks = getService().getAppTasks(mContext.getPackageName()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } int numAppTasks = appTasks.size(); for (int i = 0; i < numAppTasks; i++) { tasks.add(new AppTask(IAppTask.Stub.asInterface(appTasks.get(i)))); } return tasks; } /** * Return the current design dimensions for {@link AppTask} thumbnails, for use * with {@link #addAppTask}. */ public Size getAppTaskThumbnailSize() { synchronized (this) { ensureAppTaskThumbnailSizeLocked(); return new Size(mAppTaskThumbnailSize.x, mAppTaskThumbnailSize.y); } } private void ensureAppTaskThumbnailSizeLocked() { if (mAppTaskThumbnailSize == null) { try { mAppTaskThumbnailSize = getService().getAppTaskThumbnailSize(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } } /** * Add a new {@link AppTask} for the calling application. This will create a new * recents entry that is added to the <b>end</b> of all existing recents. * * @param activity The activity that is adding the entry. This is used to help determine * the context that the new recents entry will be in. * @param intent The Intent that describes the recents entry. This is the same Intent that * you would have used to launch the activity for it. In generally you will want to set * both {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT} and * {@link Intent#FLAG_ACTIVITY_RETAIN_IN_RECENTS}; the latter is required since this recents * entry will exist without an activity, so it doesn't make sense to not retain it when * its activity disappears. The given Intent here also must have an explicit ComponentName * set on it. * @param description Optional additional description information. * @param thumbnail Thumbnail to use for the recents entry. Should be the size given by * {@link #getAppTaskThumbnailSize()}. If the bitmap is not that exact size, it will be * recreated in your process, probably in a way you don't like, before the recents entry * is added. * * @return Returns the task id of the newly added app task, or -1 if the add failed. The * most likely cause of failure is that there is no more room for more tasks for your app. */ public int addAppTask(@NonNull Activity activity, @NonNull Intent intent, @Nullable TaskDescription description, @NonNull Bitmap thumbnail) { Point size; synchronized (this) { ensureAppTaskThumbnailSizeLocked(); size = mAppTaskThumbnailSize; } final int tw = thumbnail.getWidth(); final int th = thumbnail.getHeight(); if (tw != size.x || th != size.y) { Bitmap bm = Bitmap.createBitmap(size.x, size.y, thumbnail.getConfig()); // Use ScaleType.CENTER_CROP, except we leave the top edge at the top. float scale; float dx = 0, dy = 0; if (tw * size.x > size.y * th) { scale = (float) size.x / (float) th; dx = (size.y - tw * scale) * 0.5f; } else { scale = (float) size.y / (float) tw; dy = (size.x - th * scale) * 0.5f; } Matrix matrix = new Matrix(); matrix.setScale(scale, scale); matrix.postTranslate((int) (dx + 0.5f), 0); Canvas canvas = new Canvas(bm); canvas.drawBitmap(thumbnail, matrix, null); canvas.setBitmap(null); thumbnail = bm; } if (description == null) { description = new TaskDescription(); } try { return getService().addAppTask(activity.getActivityToken(), intent, description, thumbnail); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Return a list of the tasks that are currently running, with * the most recent being first and older ones after in order. Note that * "running" does not mean any of the task's code is currently loaded or * activity -- the task may have been frozen by the system, so that it * can be restarted in its previous state when next brought to the * foreground. * * <p><b>Note: this method is only intended for debugging and presenting * task management user interfaces</b>. This should never be used for * core logic in an application, such as deciding between different * behaviors based on the information found here. Such uses are * <em>not</em> supported, and will likely break in the future. For * example, if multiple applications can be actively running at the * same time, assumptions made about the meaning of the data here for * purposes of control flow will be incorrect.</p> * * @deprecated As of {@link android.os.Build.VERSION_CODES#LOLLIPOP}, this method * is no longer available to third party * applications: the introduction of document-centric recents means * it can leak person information to the caller. For backwards compatibility, * it will still return a small subset of its data: at least the caller's * own tasks, and possibly some other tasks * such as home that are known to not be sensitive. * * @param maxNum The maximum number of entries to return in the list. The * actual number returned may be smaller, depending on how many tasks the * user has started. * * @return Returns a list of RunningTaskInfo records describing each of * the running tasks. */ @Deprecated public List<RunningTaskInfo> getRunningTasks(int maxNum) throws SecurityException { try { return getService().getTasks(maxNum); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Sets the windowing mode for a specific task. Only works on tasks of type * {@link WindowConfiguration#ACTIVITY_TYPE_STANDARD} * @param taskId The id of the task to set the windowing mode for. * @param windowingMode The windowing mode to set for the task. * @param toTop If the task should be moved to the top once the windowing mode changes. * @hide */ @TestApi @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) public void setTaskWindowingMode(int taskId, int windowingMode, boolean toTop) throws SecurityException { try { getService().setTaskWindowingMode(taskId, windowingMode, toTop); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Moves the input task to the primary-split-screen stack. * @param taskId Id of task to move. * @param createMode The mode the primary split screen stack should be created in if it doesn't * exist already. See * {@link android.app.ActivityManager#SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT} * and * {@link android.app.ActivityManager * #SPLIT_SCREEN_CREATE_MODE_BOTTOM_OR_RIGHT} * @param toTop If the task and stack should be moved to the top. * @param animate Whether we should play an animation for the moving the task * @param initialBounds If the primary stack gets created, it will use these bounds for the * docked stack. Pass {@code null} to use default bounds. * @param showRecents If the recents activity should be shown on the other side of the task * going into split-screen mode. * @hide */ @TestApi @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) public void setTaskWindowingModeSplitScreenPrimary(int taskId, int createMode, boolean toTop, boolean animate, Rect initialBounds, boolean showRecents) throws SecurityException { try { getService().setTaskWindowingModeSplitScreenPrimary(taskId, createMode, toTop, animate, initialBounds, showRecents); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Resizes the input stack id to the given bounds. * @param stackId Id of the stack to resize. * @param bounds Bounds to resize the stack to or {@code null} for fullscreen. * @hide */ @TestApi @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) public void resizeStack(int stackId, Rect bounds) throws SecurityException { try { getService().resizeStack(stackId, bounds, false /* allowResizeInDockedMode */, false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Removes stacks in the windowing modes from the system if they are of activity type * ACTIVITY_TYPE_STANDARD or ACTIVITY_TYPE_UNDEFINED * * @hide */ @TestApi @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) public void removeStacksInWindowingModes(int[] windowingModes) throws SecurityException { try { getService().removeStacksInWindowingModes(windowingModes); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Removes stack of the activity types from the system. * * @hide */ @TestApi @RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_STACKS) public void removeStacksWithActivityTypes(int[] activityTypes) throws SecurityException { try { getService().removeStacksWithActivityTypes(activityTypes); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Represents a task snapshot. * @hide */ public static class TaskSnapshot implements Parcelable { private final GraphicBuffer mSnapshot; private final int mOrientation; private final Rect mContentInsets; // Whether this snapshot is a down-sampled version of the full resolution, used mainly for // low-ram devices private final boolean mReducedResolution; // Whether or not the snapshot is a real snapshot or an app-theme generated snapshot due to // the task having a secure window or having previews disabled private final boolean mIsRealSnapshot; private final int mWindowingMode; private final float mScale; private final int mSystemUiVisibility; private final boolean mIsTranslucent; public TaskSnapshot(GraphicBuffer snapshot, int orientation, Rect contentInsets, boolean reducedResolution, float scale, boolean isRealSnapshot, int windowingMode, int systemUiVisibility, boolean isTranslucent) { mSnapshot = snapshot; mOrientation = orientation; mContentInsets = new Rect(contentInsets); mReducedResolution = reducedResolution; mScale = scale; mIsRealSnapshot = isRealSnapshot; mWindowingMode = windowingMode; mSystemUiVisibility = systemUiVisibility; mIsTranslucent = isTranslucent; } private TaskSnapshot(Parcel source) { mSnapshot = source.readParcelable(null /* classLoader */); mOrientation = source.readInt(); mContentInsets = source.readParcelable(null /* classLoader */); mReducedResolution = source.readBoolean(); mScale = source.readFloat(); mIsRealSnapshot = source.readBoolean(); mWindowingMode = source.readInt(); mSystemUiVisibility = source.readInt(); mIsTranslucent = source.readBoolean(); } /** * @return The graphic buffer representing the screenshot. */ @UnsupportedAppUsage public GraphicBuffer getSnapshot() { return mSnapshot; } /** * @return The screen orientation the screenshot was taken in. */ @UnsupportedAppUsage public int getOrientation() { return mOrientation; } /** * @return The system/content insets on the snapshot. These can be clipped off in order to * remove any areas behind system bars in the snapshot. */ @UnsupportedAppUsage public Rect getContentInsets() { return mContentInsets; } /** * @return Whether this snapshot is a down-sampled version of the full resolution. */ @UnsupportedAppUsage public boolean isReducedResolution() { return mReducedResolution; } /** * @return Whether or not the snapshot is a real snapshot or an app-theme generated snapshot * due to the task having a secure window or having previews disabled. */ @UnsupportedAppUsage public boolean isRealSnapshot() { return mIsRealSnapshot; } /** * @return Whether or not the snapshot is of a translucent app window (non-fullscreen or has * a non-opaque pixel format). */ public boolean isTranslucent() { return mIsTranslucent; } /** * @return The windowing mode of the task when this snapshot was taken. */ public int getWindowingMode() { return mWindowingMode; } /** * @return The system ui visibility flags for the top most visible fullscreen window at the * time that the snapshot was taken. */ public int getSystemUiVisibility() { return mSystemUiVisibility; } /** * @return The scale this snapshot was taken in. */ @UnsupportedAppUsage public float getScale() { return mScale; } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeParcelable(mSnapshot, 0); dest.writeInt(mOrientation); dest.writeParcelable(mContentInsets, 0); dest.writeBoolean(mReducedResolution); dest.writeFloat(mScale); dest.writeBoolean(mIsRealSnapshot); dest.writeInt(mWindowingMode); dest.writeInt(mSystemUiVisibility); dest.writeBoolean(mIsTranslucent); } @Override public String toString() { final int width = mSnapshot != null ? mSnapshot.getWidth() : 0; final int height = mSnapshot != null ? mSnapshot.getHeight() : 0; return "TaskSnapshot{mSnapshot=" + mSnapshot + " (" + width + "x" + height + ")" + " mOrientation=" + mOrientation + " mContentInsets=" + mContentInsets.toShortString() + " mReducedResolution=" + mReducedResolution + " mScale=" + mScale + " mIsRealSnapshot=" + mIsRealSnapshot + " mWindowingMode=" + mWindowingMode + " mSystemUiVisibility=" + mSystemUiVisibility + " mIsTranslucent=" + mIsTranslucent; } public static final Creator<TaskSnapshot> CREATOR = new Creator<TaskSnapshot>() { public TaskSnapshot createFromParcel(Parcel source) { return new TaskSnapshot(source); } public TaskSnapshot[] newArray(int size) { return new TaskSnapshot[size]; } }; } /** @hide */ @IntDef(flag = true, prefix = { "MOVE_TASK_" }, value = { MOVE_TASK_WITH_HOME, MOVE_TASK_NO_USER_ACTION, }) @Retention(RetentionPolicy.SOURCE) public @interface MoveTaskFlags { } /** * Flag for {@link #moveTaskToFront(int, int)}: also move the "home" * activity along with the task, so it is positioned immediately behind * the task. */ public static final int MOVE_TASK_WITH_HOME = 0x00000001; /** * Flag for {@link #moveTaskToFront(int, int)}: don't count this as a * user-instigated action, so the current activity will not receive a * hint that the user is leaving. */ public static final int MOVE_TASK_NO_USER_ACTION = 0x00000002; /** * Equivalent to calling {@link #moveTaskToFront(int, int, Bundle)} * with a null options argument. * * @param taskId The identifier of the task to be moved, as found in * {@link RunningTaskInfo} or {@link RecentTaskInfo}. * @param flags Additional operational flags. */ @RequiresPermission(android.Manifest.permission.REORDER_TASKS) public void moveTaskToFront(int taskId, @MoveTaskFlags int flags) { moveTaskToFront(taskId, flags, null); } /** * Ask that the task associated with a given task ID be moved to the * front of the stack, so it is now visible to the user. * * @param taskId The identifier of the task to be moved, as found in * {@link RunningTaskInfo} or {@link RecentTaskInfo}. * @param flags Additional operational flags. * @param options Additional options for the operation, either null or * as per {@link Context#startActivity(Intent, android.os.Bundle) * Context.startActivity(Intent, Bundle)}. */ @RequiresPermission(android.Manifest.permission.REORDER_TASKS) public void moveTaskToFront(int taskId, @MoveTaskFlags int flags, Bundle options) { try { getService().moveTaskToFront(taskId, flags, options); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Information you can retrieve about a particular Service that is * currently running in the system. */ public static class RunningServiceInfo implements Parcelable { /** * The service component. */ public ComponentName service; /** * If non-zero, this is the process the service is running in. */ public int pid; /** * The UID that owns this service. */ public int uid; /** * The name of the process this service runs in. */ public String process; /** * Set to true if the service has asked to run as a foreground process. */ public boolean foreground; /** * The time when the service was first made active, either by someone * starting or binding to it. This * is in units of {@link android.os.SystemClock#elapsedRealtime()}. */ public long activeSince; /** * Set to true if this service has been explicitly started. */ public boolean started; /** * Number of clients connected to the service. */ public int clientCount; /** * Number of times the service's process has crashed while the service * is running. */ public int crashCount; /** * The time when there was last activity in the service (either * explicit requests to start it or clients binding to it). This * is in units of {@link android.os.SystemClock#uptimeMillis()}. */ public long lastActivityTime; /** * If non-zero, this service is not currently running, but scheduled to * restart at the given time. */ public long restarting; /** * Bit for {@link #flags}: set if this service has been * explicitly started. */ public static final int FLAG_STARTED = 1 << 0; /** * Bit for {@link #flags}: set if the service has asked to * run as a foreground process. */ public static final int FLAG_FOREGROUND = 1 << 1; /** * Bit for {@link #flags}: set if the service is running in a * core system process. */ public static final int FLAG_SYSTEM_PROCESS = 1 << 2; /** * Bit for {@link #flags}: set if the service is running in a * persistent process. */ public static final int FLAG_PERSISTENT_PROCESS = 1 << 3; /** * Running flags. */ public int flags; /** * For special services that are bound to by system code, this is * the package that holds the binding. */ public String clientPackage; /** * For special services that are bound to by system code, this is * a string resource providing a user-visible label for who the * client is. */ public int clientLabel; public RunningServiceInfo() { } public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int flags) { ComponentName.writeToParcel(service, dest); dest.writeInt(pid); dest.writeInt(uid); dest.writeString(process); dest.writeInt(foreground ? 1 : 0); dest.writeLong(activeSince); dest.writeInt(started ? 1 : 0); dest.writeInt(clientCount); dest.writeInt(crashCount); dest.writeLong(lastActivityTime); dest.writeLong(restarting); dest.writeInt(this.flags); dest.writeString(clientPackage); dest.writeInt(clientLabel); } public void readFromParcel(Parcel source) { service = ComponentName.readFromParcel(source); pid = source.readInt(); uid = source.readInt(); process = source.readString(); foreground = source.readInt() != 0; activeSince = source.readLong(); started = source.readInt() != 0; clientCount = source.readInt(); crashCount = source.readInt(); lastActivityTime = source.readLong(); restarting = source.readLong(); flags = source.readInt(); clientPackage = source.readString(); clientLabel = source.readInt(); } public static final Creator<RunningServiceInfo> CREATOR = new Creator<RunningServiceInfo>() { public RunningServiceInfo createFromParcel(Parcel source) { return new RunningServiceInfo(source); } public RunningServiceInfo[] newArray(int size) { return new RunningServiceInfo[size]; } }; private RunningServiceInfo(Parcel source) { readFromParcel(source); } } /** * Return a list of the services that are currently running. * * <p><b>Note: this method is only intended for debugging or implementing * service management type user interfaces.</b></p> * * @deprecated As of {@link android.os.Build.VERSION_CODES#O}, this method * is no longer available to third party applications. For backwards compatibility, * it will still return the caller's own services. * * @param maxNum The maximum number of entries to return in the list. The * actual number returned may be smaller, depending on how many services * are running. * * @return Returns a list of RunningServiceInfo records describing each of * the running tasks. */ @Deprecated public List<RunningServiceInfo> getRunningServices(int maxNum) throws SecurityException { try { return getService().getServices(maxNum, 0); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Returns a PendingIntent you can start to show a control panel for the * given running service. If the service does not have a control panel, * null is returned. */ public PendingIntent getRunningServiceControlPanel(ComponentName service) throws SecurityException { try { return getService().getRunningServiceControlPanel(service); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Information you can retrieve about the available memory through * {@link ActivityManager#getMemoryInfo}. */ public static class MemoryInfo implements Parcelable { /** * The available memory on the system. This number should not * be considered absolute: due to the nature of the kernel, a significant * portion of this memory is actually in use and needed for the overall * system to run well. */ public long availMem; /** * The total memory accessible by the kernel. This is basically the * RAM size of the device, not including below-kernel fixed allocations * like DMA buffers, RAM for the baseband CPU, etc. */ public long totalMem; /** * The threshold of {@link #availMem} at which we consider memory to be * low and start killing background services and other non-extraneous * processes. */ public long threshold; /** * Set to true if the system considers itself to currently be in a low * memory situation. */ public boolean lowMemory; /** @hide */ @UnsupportedAppUsage public long hiddenAppThreshold; /** @hide */ @UnsupportedAppUsage public long secondaryServerThreshold; /** @hide */ @UnsupportedAppUsage public long visibleAppThreshold; /** @hide */ @UnsupportedAppUsage public long foregroundAppThreshold; public MemoryInfo() { } public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int flags) { dest.writeLong(availMem); dest.writeLong(totalMem); dest.writeLong(threshold); dest.writeInt(lowMemory ? 1 : 0); dest.writeLong(hiddenAppThreshold); dest.writeLong(secondaryServerThreshold); dest.writeLong(visibleAppThreshold); dest.writeLong(foregroundAppThreshold); } public void readFromParcel(Parcel source) { availMem = source.readLong(); totalMem = source.readLong(); threshold = source.readLong(); lowMemory = source.readInt() != 0; hiddenAppThreshold = source.readLong(); secondaryServerThreshold = source.readLong(); visibleAppThreshold = source.readLong(); foregroundAppThreshold = source.readLong(); } public static final Creator<MemoryInfo> CREATOR = new Creator<MemoryInfo>() { public MemoryInfo createFromParcel(Parcel source) { return new MemoryInfo(source); } public MemoryInfo[] newArray(int size) { return new MemoryInfo[size]; } }; private MemoryInfo(Parcel source) { readFromParcel(source); } } /** * Return general information about the memory state of the system. This * can be used to help decide how to manage your own memory, though note * that polling is not recommended and * {@link android.content.ComponentCallbacks2#onTrimMemory(int) * ComponentCallbacks2.onTrimMemory(int)} is the preferred way to do this. * Also see {@link #getMyMemoryState} for how to retrieve the current trim * level of your process as needed, which gives a better hint for how to * manage its memory. */ public void getMemoryInfo(MemoryInfo outInfo) { try { getService().getMemoryInfo(outInfo); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Information you can retrieve about an ActivityStack in the system. * @hide */ public static class StackInfo implements Parcelable { @UnsupportedAppUsage public int stackId; @UnsupportedAppUsage public Rect bounds = new Rect(); @UnsupportedAppUsage public int[] taskIds; @UnsupportedAppUsage public String[] taskNames; @UnsupportedAppUsage public Rect[] taskBounds; @UnsupportedAppUsage public int[] taskUserIds; @UnsupportedAppUsage public ComponentName topActivity; @UnsupportedAppUsage public int displayId; @UnsupportedAppUsage public int userId; @UnsupportedAppUsage public boolean visible; // Index of the stack in the display's stack list, can be used for comparison of stack order @UnsupportedAppUsage public int position; /** * The full configuration the stack is currently running in. * @hide */ final public Configuration configuration = new Configuration(); @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeInt(stackId); dest.writeInt(bounds.left); dest.writeInt(bounds.top); dest.writeInt(bounds.right); dest.writeInt(bounds.bottom); dest.writeIntArray(taskIds); dest.writeStringArray(taskNames); final int boundsCount = taskBounds == null ? 0 : taskBounds.length; dest.writeInt(boundsCount); for (int i = 0; i < boundsCount; i++) { dest.writeInt(taskBounds[i].left); dest.writeInt(taskBounds[i].top); dest.writeInt(taskBounds[i].right); dest.writeInt(taskBounds[i].bottom); } dest.writeIntArray(taskUserIds); dest.writeInt(displayId); dest.writeInt(userId); dest.writeInt(visible ? 1 : 0); dest.writeInt(position); if (topActivity != null) { dest.writeInt(1); topActivity.writeToParcel(dest, 0); } else { dest.writeInt(0); } configuration.writeToParcel(dest, flags); } public void readFromParcel(Parcel source) { stackId = source.readInt(); bounds = new Rect(source.readInt(), source.readInt(), source.readInt(), source.readInt()); taskIds = source.createIntArray(); taskNames = source.createStringArray(); final int boundsCount = source.readInt(); if (boundsCount > 0) { taskBounds = new Rect[boundsCount]; for (int i = 0; i < boundsCount; i++) { taskBounds[i] = new Rect(); taskBounds[i].set(source.readInt(), source.readInt(), source.readInt(), source.readInt()); } } else { taskBounds = null; } taskUserIds = source.createIntArray(); displayId = source.readInt(); userId = source.readInt(); visible = source.readInt() > 0; position = source.readInt(); if (source.readInt() > 0) { topActivity = ComponentName.readFromParcel(source); } configuration.readFromParcel(source); } public static final Creator<StackInfo> CREATOR = new Creator<StackInfo>() { @Override public StackInfo createFromParcel(Parcel source) { return new StackInfo(source); } @Override public StackInfo[] newArray(int size) { return new StackInfo[size]; } }; public StackInfo() { } private StackInfo(Parcel source) { readFromParcel(source); } @UnsupportedAppUsage public String toString(String prefix) { StringBuilder sb = new StringBuilder(256); sb.append(prefix); sb.append("Stack id="); sb.append(stackId); sb.append(" bounds="); sb.append(bounds.toShortString()); sb.append(" displayId="); sb.append(displayId); sb.append(" userId="); sb.append(userId); sb.append("\n"); sb.append(" configuration="); sb.append(configuration); sb.append("\n"); prefix = prefix + " "; for (int i = 0; i < taskIds.length; ++i) { sb.append(prefix); sb.append("taskId="); sb.append(taskIds[i]); sb.append(": "); sb.append(taskNames[i]); if (taskBounds != null) { sb.append(" bounds="); sb.append(taskBounds[i].toShortString()); } sb.append(" userId=").append(taskUserIds[i]); sb.append(" visible=").append(visible); if (topActivity != null) { sb.append(" topActivity=").append(topActivity); } sb.append("\n"); } return sb.toString(); } @Override public String toString() { return toString(""); } } /** * @hide */ @RequiresPermission(anyOf = { Manifest.permission.CLEAR_APP_USER_DATA, Manifest.permission.ACCESS_INSTANT_APPS }) @UnsupportedAppUsage public boolean clearApplicationUserData(String packageName, IPackageDataObserver observer) { try { return getService().clearApplicationUserData(packageName, false, observer, mContext.getUserId()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Permits an application to erase its own data from disk. This is equivalent to * the user choosing to clear the app's data from within the device settings UI. It * erases all dynamic data associated with the app -- its private data and data in its * private area on external storage -- but does not remove the installed application * itself, nor any OBB files. It also revokes all runtime permissions that the app has acquired, * clears all notifications and removes all Uri grants related to this application. * * @return {@code true} if the application successfully requested that the application's * data be erased; {@code false} otherwise. */ public boolean clearApplicationUserData() { return clearApplicationUserData(mContext.getPackageName(), null); } /** * Permits an application to get the persistent URI permissions granted to another. * * <p>Typically called by Settings or DocumentsUI, requires * {@code GET_APP_GRANTED_URI_PERMISSIONS}. * * @param packageName application to look for the granted permissions, or {@code null} to get * granted permissions for all applications * @return list of granted URI permissions * * @hide */ public ParceledListSlice<GrantedUriPermission> getGrantedUriPermissions(@Nullable String packageName) { try { @SuppressWarnings("unchecked") final ParceledListSlice<GrantedUriPermission> castedList = getService() .getGrantedUriPermissions(packageName, mContext.getUserId()); return castedList; } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Permits an application to clear the persistent URI permissions granted to another. * * <p>Typically called by Settings, requires {@code CLEAR_APP_GRANTED_URI_PERMISSIONS}. * * @param packageName application to clear its granted permissions * * @hide */ public void clearGrantedUriPermissions(String packageName) { try { getService().clearGrantedUriPermissions(packageName, mContext.getUserId()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Information you can retrieve about any processes that are in an error condition. */ public static class ProcessErrorStateInfo implements Parcelable { /** * Condition codes */ public static final int NO_ERROR = 0; public static final int CRASHED = 1; public static final int NOT_RESPONDING = 2; /** * The condition that the process is in. */ public int condition; /** * The process name in which the crash or error occurred. */ public String processName; /** * The pid of this process; 0 if none */ public int pid; /** * The kernel user-ID that has been assigned to this process; * currently this is not a unique ID (multiple applications can have * the same uid). */ public int uid; /** * The activity name associated with the error, if known. May be null. */ public String tag; /** * A short message describing the error condition. */ public String shortMsg; /** * A long message describing the error condition. */ public String longMsg; /** * The stack trace where the error originated. May be null. */ public String stackTrace; /** * to be deprecated: This value will always be null. */ public byte[] crashData = null; public ProcessErrorStateInfo() { } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeInt(condition); dest.writeString(processName); dest.writeInt(pid); dest.writeInt(uid); dest.writeString(tag); dest.writeString(shortMsg); dest.writeString(longMsg); dest.writeString(stackTrace); } public void readFromParcel(Parcel source) { condition = source.readInt(); processName = source.readString(); pid = source.readInt(); uid = source.readInt(); tag = source.readString(); shortMsg = source.readString(); longMsg = source.readString(); stackTrace = source.readString(); } public static final Creator<ProcessErrorStateInfo> CREATOR = new Creator<ProcessErrorStateInfo>() { public ProcessErrorStateInfo createFromParcel(Parcel source) { return new ProcessErrorStateInfo(source); } public ProcessErrorStateInfo[] newArray(int size) { return new ProcessErrorStateInfo[size]; } }; private ProcessErrorStateInfo(Parcel source) { readFromParcel(source); } } /** * Returns a list of any processes that are currently in an error condition. The result * will be null if all processes are running properly at this time. * * @return Returns a list of ProcessErrorStateInfo records, or null if there are no * current error conditions (it will not return an empty list). This list ordering is not * specified. */ public List<ProcessErrorStateInfo> getProcessesInErrorState() { try { return getService().getProcessesInErrorState(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Information you can retrieve about a running process. */ public static class RunningAppProcessInfo implements Parcelable { /** * The name of the process that this object is associated with */ public String processName; /** * The pid of this process; 0 if none */ public int pid; /** * The user id of this process. */ public int uid; /** * All packages that have been loaded into the process. */ public String pkgList[]; /** * Constant for {@link #flags}: this is an app that is unable to * correctly save its state when going to the background, * so it can not be killed while in the background. * @hide */ public static final int FLAG_CANT_SAVE_STATE = 1 << 0; /** * Constant for {@link #flags}: this process is associated with a * persistent system app. * @hide */ @UnsupportedAppUsage public static final int FLAG_PERSISTENT = 1 << 1; /** * Constant for {@link #flags}: this process is associated with a * persistent system app. * @hide */ @UnsupportedAppUsage public static final int FLAG_HAS_ACTIVITIES = 1 << 2; /** * Flags of information. May be any of * {@link #FLAG_CANT_SAVE_STATE}. * @hide */ @UnsupportedAppUsage public int flags; /** * Last memory trim level reported to the process: corresponds to * the values supplied to {@link android.content.ComponentCallbacks2#onTrimMemory(int) * ComponentCallbacks2.onTrimMemory(int)}. */ public int lastTrimLevel; /** @hide */ @IntDef(prefix = { "IMPORTANCE_" }, value = { IMPORTANCE_FOREGROUND, IMPORTANCE_FOREGROUND_SERVICE, IMPORTANCE_TOP_SLEEPING, IMPORTANCE_VISIBLE, IMPORTANCE_PERCEPTIBLE, IMPORTANCE_CANT_SAVE_STATE, IMPORTANCE_SERVICE, IMPORTANCE_CACHED, IMPORTANCE_GONE, }) @Retention(RetentionPolicy.SOURCE) public @interface Importance { } /** * Constant for {@link #importance}: This process is running the * foreground UI; that is, it is the thing currently at the top of the screen * that the user is interacting with. */ public static final int IMPORTANCE_FOREGROUND = 100; /** * Constant for {@link #importance}: This process is running a foreground * service, for example to perform music playback even while the user is * not immediately in the app. This generally indicates that the process * is doing something the user actively cares about. */ public static final int IMPORTANCE_FOREGROUND_SERVICE = 125; /** * @deprecated Pre-{@link android.os.Build.VERSION_CODES#P} version of * {@link #IMPORTANCE_TOP_SLEEPING}. As of Android * {@link android.os.Build.VERSION_CODES#P}, this is considered much less * important since we want to reduce what apps can do when the screen is off. */ @Deprecated public static final int IMPORTANCE_TOP_SLEEPING_PRE_28 = 150; /** * Constant for {@link #importance}: This process is running something * that is actively visible to the user, though not in the immediate * foreground. This may be running a window that is behind the current * foreground (so paused and with its state saved, not interacting with * the user, but visible to them to some degree); it may also be running * other services under the system's control that it inconsiders important. */ public static final int IMPORTANCE_VISIBLE = 200; /** * Constant for {@link #importance}: {@link #IMPORTANCE_PERCEPTIBLE} had this wrong value * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, * the value of {@link #IMPORTANCE_PERCEPTIBLE} has been fixed. * * <p>The system will return this value instead of {@link #IMPORTANCE_PERCEPTIBLE} * on Android versions below {@link Build.VERSION_CODES#O}. * * <p>On Android version {@link Build.VERSION_CODES#O} and later, this value will still be * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. * For apps targeting version {@link Build.VERSION_CODES#O} and later, * the correct value {@link #IMPORTANCE_PERCEPTIBLE} will be returned. */ public static final int IMPORTANCE_PERCEPTIBLE_PRE_26 = 130; /** * Constant for {@link #importance}: This process is not something the user * is directly aware of, but is otherwise perceptible to them to some degree. */ public static final int IMPORTANCE_PERCEPTIBLE = 230; /** * Constant for {@link #importance}: {@link #IMPORTANCE_CANT_SAVE_STATE} had * this wrong value * before {@link Build.VERSION_CODES#O}. Since the {@link Build.VERSION_CODES#O} SDK, * the value of {@link #IMPORTANCE_CANT_SAVE_STATE} has been fixed. * * <p>The system will return this value instead of {@link #IMPORTANCE_CANT_SAVE_STATE} * on Android versions below {@link Build.VERSION_CODES#O}. * * <p>On Android version {@link Build.VERSION_CODES#O} after, this value will still be * returned for apps with the target API level below {@link Build.VERSION_CODES#O}. * For apps targeting version {@link Build.VERSION_CODES#O} and later, * the correct value {@link #IMPORTANCE_CANT_SAVE_STATE} will be returned. * * @hide */ public static final int IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170; /** * Constant for {@link #importance}: This process is contains services * that should remain running. These are background services apps have * started, not something the user is aware of, so they may be killed by * the system relatively freely (though it is generally desired that they * stay running as long as they want to). */ public static final int IMPORTANCE_SERVICE = 300; /** * Constant for {@link #importance}: This process is running the foreground * UI, but the device is asleep so it is not visible to the user. Though the * system will try hard to keep its process from being killed, in all other * ways we consider it a kind of cached process, with the limitations that go * along with that state: network access, running background services, etc. */ public static final int IMPORTANCE_TOP_SLEEPING = 325; /** * Constant for {@link #importance}: This process is running an * application that can not save its state, and thus can't be killed * while in the background. This will be used with apps that have * {@link android.R.attr#cantSaveState} set on their application tag. */ public static final int IMPORTANCE_CANT_SAVE_STATE = 350; /** * Constant for {@link #importance}: This process process contains * cached code that is expendable, not actively running any app components * we care about. */ public static final int IMPORTANCE_CACHED = 400; /** * @deprecated Renamed to {@link #IMPORTANCE_CACHED}. */ public static final int IMPORTANCE_BACKGROUND = IMPORTANCE_CACHED; /** * Constant for {@link #importance}: This process is empty of any * actively running code. * @deprecated This value is no longer reported, use {@link #IMPORTANCE_CACHED} instead. */ @Deprecated public static final int IMPORTANCE_EMPTY = 500; /** * Constant for {@link #importance}: This process does not exist. */ public static final int IMPORTANCE_GONE = 1000; /** * Convert a proc state to the correspondent IMPORTANCE_* constant. If the return value * will be passed to a client, use {@link #procStateToImportanceForClient}. * @hide */ @UnsupportedAppUsage public static @Importance int procStateToImportance(int procState) { if (procState == PROCESS_STATE_NONEXISTENT) { return IMPORTANCE_GONE; } else if (procState >= PROCESS_STATE_HOME) { return IMPORTANCE_CACHED; } else if (procState == PROCESS_STATE_HEAVY_WEIGHT) { return IMPORTANCE_CANT_SAVE_STATE; } else if (procState >= PROCESS_STATE_TOP_SLEEPING) { return IMPORTANCE_TOP_SLEEPING; } else if (procState >= PROCESS_STATE_SERVICE) { return IMPORTANCE_SERVICE; } else if (procState >= PROCESS_STATE_TRANSIENT_BACKGROUND) { return IMPORTANCE_PERCEPTIBLE; } else if (procState >= PROCESS_STATE_IMPORTANT_FOREGROUND) { return IMPORTANCE_VISIBLE; } else if (procState >= PROCESS_STATE_FOREGROUND_SERVICE) { return IMPORTANCE_FOREGROUND_SERVICE; } else { return IMPORTANCE_FOREGROUND; } } /** * Convert a proc state to the correspondent IMPORTANCE_* constant for a client represented * by a given {@link Context}, with converting {@link #IMPORTANCE_PERCEPTIBLE} * and {@link #IMPORTANCE_CANT_SAVE_STATE} to the corresponding "wrong" value if the * client's target SDK < {@link VERSION_CODES#O}. * @hide */ public static @Importance int procStateToImportanceForClient(int procState, Context clientContext) { return procStateToImportanceForTargetSdk(procState, clientContext.getApplicationInfo().targetSdkVersion); } /** * See {@link #procStateToImportanceForClient}. * @hide */ public static @Importance int procStateToImportanceForTargetSdk(int procState, int targetSdkVersion) { final int importance = procStateToImportance(procState); // For pre O apps, convert to the old, wrong values. if (targetSdkVersion < VERSION_CODES.O) { switch (importance) { case IMPORTANCE_PERCEPTIBLE: return IMPORTANCE_PERCEPTIBLE_PRE_26; case IMPORTANCE_TOP_SLEEPING: return IMPORTANCE_TOP_SLEEPING_PRE_28; case IMPORTANCE_CANT_SAVE_STATE: return IMPORTANCE_CANT_SAVE_STATE_PRE_26; } } return importance; } /** @hide */ public static int importanceToProcState(@Importance int importance) { if (importance == IMPORTANCE_GONE) { return PROCESS_STATE_NONEXISTENT; } else if (importance >= IMPORTANCE_CACHED) { return PROCESS_STATE_HOME; } else if (importance >= IMPORTANCE_CANT_SAVE_STATE) { return PROCESS_STATE_HEAVY_WEIGHT; } else if (importance >= IMPORTANCE_TOP_SLEEPING) { return PROCESS_STATE_TOP_SLEEPING; } else if (importance >= IMPORTANCE_SERVICE) { return PROCESS_STATE_SERVICE; } else if (importance >= IMPORTANCE_PERCEPTIBLE) { return PROCESS_STATE_TRANSIENT_BACKGROUND; } else if (importance >= IMPORTANCE_VISIBLE) { return PROCESS_STATE_IMPORTANT_FOREGROUND; } else if (importance >= IMPORTANCE_TOP_SLEEPING_PRE_28) { return PROCESS_STATE_IMPORTANT_FOREGROUND; } else if (importance >= IMPORTANCE_FOREGROUND_SERVICE) { return PROCESS_STATE_FOREGROUND_SERVICE; } else { return PROCESS_STATE_TOP; } } /** * The relative importance level that the system places on this process. * These constants are numbered so that "more important" values are * always smaller than "less important" values. */ public @Importance int importance; /** * An additional ordering within a particular {@link #importance} * category, providing finer-grained information about the relative * utility of processes within a category. This number means nothing * except that a smaller values are more recently used (and thus * more important). Currently an LRU value is only maintained for * the {@link #IMPORTANCE_CACHED} category, though others may * be maintained in the future. */ public int lru; /** * Constant for {@link #importanceReasonCode}: nothing special has * been specified for the reason for this level. */ public static final int REASON_UNKNOWN = 0; /** * Constant for {@link #importanceReasonCode}: one of the application's * content providers is being used by another process. The pid of * the client process is in {@link #importanceReasonPid} and the * target provider in this process is in * {@link #importanceReasonComponent}. */ public static final int REASON_PROVIDER_IN_USE = 1; /** * Constant for {@link #importanceReasonCode}: one of the application's * content providers is being used by another process. The pid of * the client process is in {@link #importanceReasonPid} and the * target provider in this process is in * {@link #importanceReasonComponent}. */ public static final int REASON_SERVICE_IN_USE = 2; /** * The reason for {@link #importance}, if any. */ public int importanceReasonCode; /** * For the specified values of {@link #importanceReasonCode}, this * is the process ID of the other process that is a client of this * process. This will be 0 if no other process is using this one. */ public int importanceReasonPid; /** * For the specified values of {@link #importanceReasonCode}, this * is the name of the component that is being used in this process. */ public ComponentName importanceReasonComponent; /** * When {@link #importanceReasonPid} is non-0, this is the importance * of the other pid. @hide */ public int importanceReasonImportance; /** * Current process state, as per PROCESS_STATE_* constants. * @hide */ @UnsupportedAppUsage public int processState; public RunningAppProcessInfo() { importance = IMPORTANCE_FOREGROUND; importanceReasonCode = REASON_UNKNOWN; processState = PROCESS_STATE_IMPORTANT_FOREGROUND; } public RunningAppProcessInfo(String pProcessName, int pPid, String pArr[]) { processName = pProcessName; pid = pPid; pkgList = pArr; } public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int flags) { dest.writeString(processName); dest.writeInt(pid); dest.writeInt(uid); dest.writeStringArray(pkgList); dest.writeInt(this.flags); dest.writeInt(lastTrimLevel); dest.writeInt(importance); dest.writeInt(lru); dest.writeInt(importanceReasonCode); dest.writeInt(importanceReasonPid); ComponentName.writeToParcel(importanceReasonComponent, dest); dest.writeInt(importanceReasonImportance); dest.writeInt(processState); } public void readFromParcel(Parcel source) { processName = source.readString(); pid = source.readInt(); uid = source.readInt(); pkgList = source.readStringArray(); flags = source.readInt(); lastTrimLevel = source.readInt(); importance = source.readInt(); lru = source.readInt(); importanceReasonCode = source.readInt(); importanceReasonPid = source.readInt(); importanceReasonComponent = ComponentName.readFromParcel(source); importanceReasonImportance = source.readInt(); processState = source.readInt(); } public static final Creator<RunningAppProcessInfo> CREATOR = new Creator<RunningAppProcessInfo>() { public RunningAppProcessInfo createFromParcel(Parcel source) { return new RunningAppProcessInfo(source); } public RunningAppProcessInfo[] newArray(int size) { return new RunningAppProcessInfo[size]; } }; private RunningAppProcessInfo(Parcel source) { readFromParcel(source); } } /** * Returns a list of application processes installed on external media * that are running on the device. * * <p><b>Note: this method is only intended for debugging or building * a user-facing process management UI.</b></p> * * @return Returns a list of ApplicationInfo records, or null if none * This list ordering is not specified. * @hide */ public List<ApplicationInfo> getRunningExternalApplications() { try { return getService().getRunningExternalApplications(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Query whether the user has enabled background restrictions for this app. * * <p> The user may chose to do this, if they see that an app is consuming an unreasonable * amount of battery while in the background. </p> * * <p> If true, any work that the app tries to do will be aggressively restricted while it is in * the background. At a minimum, jobs and alarms will not execute and foreground services * cannot be started unless an app activity is in the foreground. </p> * * <p><b> Note that these restrictions stay in effect even when the device is charging.</b></p> * * @return true if user has enforced background restrictions for this app, false otherwise. */ public boolean isBackgroundRestricted() { try { return getService().isBackgroundRestricted(mContext.getOpPackageName()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Sets the memory trim mode for a process and schedules a memory trim operation. * * <p><b>Note: this method is only intended for testing framework.</b></p> * * @return Returns true if successful. * @hide */ public boolean setProcessMemoryTrimLevel(String process, int userId, int level) { try { return getService().setProcessMemoryTrimLevel(process, userId, level); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Returns a list of application processes that are running on the device. * * <p><b>Note: this method is only intended for debugging or building * a user-facing process management UI.</b></p> * * @return Returns a list of RunningAppProcessInfo records, or null if there are no * running processes (it will not return an empty list). This list ordering is not * specified. */ public List<RunningAppProcessInfo> getRunningAppProcesses() { try { return getService().getRunningAppProcesses(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Return the importance of a given package name, based on the processes that are * currently running. The return value is one of the importance constants defined * in {@link RunningAppProcessInfo}, giving you the highest importance of all the * processes that this package has code running inside of. If there are no processes * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. * @hide */ @SystemApi @TestApi @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) public @RunningAppProcessInfo.Importance int getPackageImportance(String packageName) { try { int procState = getService().getPackageProcessState(packageName, mContext.getOpPackageName()); return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Return the importance of a given uid, based on the processes that are * currently running. The return value is one of the importance constants defined * in {@link RunningAppProcessInfo}, giving you the highest importance of all the * processes that this uid has running. If there are no processes * running its code, {@link RunningAppProcessInfo#IMPORTANCE_GONE} is returned. * @hide */ @SystemApi @TestApi @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) public @RunningAppProcessInfo.Importance int getUidImportance(int uid) { try { int procState = getService().getUidProcessState(uid, mContext.getOpPackageName()); return RunningAppProcessInfo.procStateToImportanceForClient(procState, mContext); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Callback to get reports about changes to the importance of a uid. Use with * {@link #addOnUidImportanceListener}. * @hide */ @SystemApi @TestApi public interface OnUidImportanceListener { /** * The importance if a given uid has changed. Will be one of the importance * values in {@link RunningAppProcessInfo}; * {@link RunningAppProcessInfo#IMPORTANCE_GONE IMPORTANCE_GONE} will be reported * when the uid is no longer running at all. This callback will happen on a thread * from a thread pool, not the main UI thread. * @param uid The uid whose importance has changed. * @param importance The new importance value as per {@link RunningAppProcessInfo}. */ void onUidImportance(int uid, @RunningAppProcessInfo.Importance int importance); } /** * Start monitoring changes to the imoportance of uids running in the system. * @param listener The listener callback that will receive change reports. * @param importanceCutpoint The level of importance in which the caller is interested * in differences. For example, if {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} * is used here, you will receive a call each time a uids importance transitions between * being <= {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE} and * > {@link RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}. * * <p>The caller must hold the {@link android.Manifest.permission#PACKAGE_USAGE_STATS} * permission to use this feature.</p> * * @throws IllegalArgumentException If the listener is already registered. * @throws SecurityException If the caller does not hold * {@link android.Manifest.permission#PACKAGE_USAGE_STATS}. * @hide */ @SystemApi @TestApi @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) public void addOnUidImportanceListener(OnUidImportanceListener listener, @RunningAppProcessInfo.Importance int importanceCutpoint) { synchronized (this) { if (mImportanceListeners.containsKey(listener)) { throw new IllegalArgumentException("Listener already registered: " + listener); } // TODO: implement the cut point in the system process to avoid IPCs. UidObserver observer = new UidObserver(listener, mContext); try { getService().registerUidObserver(observer, UID_OBSERVER_PROCSTATE | UID_OBSERVER_GONE, RunningAppProcessInfo.importanceToProcState(importanceCutpoint), mContext.getOpPackageName()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } mImportanceListeners.put(listener, observer); } } /** * Remove an importance listener that was previously registered with * {@link #addOnUidImportanceListener}. * * @throws IllegalArgumentException If the listener is not registered. * @hide */ @SystemApi @TestApi @RequiresPermission(Manifest.permission.PACKAGE_USAGE_STATS) public void removeOnUidImportanceListener(OnUidImportanceListener listener) { synchronized (this) { UidObserver observer = mImportanceListeners.remove(listener); if (observer == null) { throw new IllegalArgumentException("Listener not registered: " + listener); } try { getService().unregisterUidObserver(observer); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } } /** * Return global memory state information for the calling process. This * does not fill in all fields of the {@link RunningAppProcessInfo}. The * only fields that will be filled in are * {@link RunningAppProcessInfo#pid}, * {@link RunningAppProcessInfo#uid}, * {@link RunningAppProcessInfo#lastTrimLevel}, * {@link RunningAppProcessInfo#importance}, * {@link RunningAppProcessInfo#lru}, and * {@link RunningAppProcessInfo#importanceReasonCode}. */ static public void getMyMemoryState(RunningAppProcessInfo outState) { try { getService().getMyMemoryState(outState); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Return information about the memory usage of one or more processes. * * <p><b>Note: this method is only intended for debugging or building * a user-facing process management UI.</b></p> * * @param pids The pids of the processes whose memory usage is to be * retrieved. * @return Returns an array of memory information, one for each * requested pid. */ public Debug.MemoryInfo[] getProcessMemoryInfo(int[] pids) { try { return getService().getProcessMemoryInfo(pids); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * @deprecated This is now just a wrapper for * {@link #killBackgroundProcesses(String)}; the previous behavior here * is no longer available to applications because it allows them to * break other applications by removing their alarms, stopping their * services, etc. */ @Deprecated public void restartPackage(String packageName) { killBackgroundProcesses(packageName); } /** * Have the system immediately kill all background processes associated * with the given package. This is the same as the kernel killing those * processes to reclaim memory; the system will take care of restarting * these processes in the future as needed. * * @param packageName The name of the package whose processes are to * be killed. */ @RequiresPermission(Manifest.permission.KILL_BACKGROUND_PROCESSES) public void killBackgroundProcesses(String packageName) { try { getService().killBackgroundProcesses(packageName, mContext.getUserId()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Kills the specified UID. * @param uid The UID to kill. * @param reason The reason for the kill. * * @hide */ @SystemApi @RequiresPermission(Manifest.permission.KILL_UID) public void killUid(int uid, String reason) { try { getService().killUid(UserHandle.getAppId(uid), UserHandle.getUserId(uid), reason); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Have the system perform a force stop of everything associated with * the given application package. All processes that share its uid * will be killed, all services it has running stopped, all activities * removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} * broadcast will be sent, so that any of its registered alarms can * be stopped, notifications removed, etc. * * <p>You must hold the permission * {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to * call this method. * * @param packageName The name of the package to be stopped. * @param userId The user for which the running package is to be stopped. * * @hide This is not available to third party applications due to * it allowing them to break other applications by stopping their * services, removing their alarms, etc. */ @UnsupportedAppUsage public void forceStopPackageAsUser(String packageName, int userId) { try { getService().forceStopPackage(packageName, userId); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * @see #forceStopPackageAsUser(String, int) * @hide */ @SystemApi @RequiresPermission(Manifest.permission.FORCE_STOP_PACKAGES) public void forceStopPackage(String packageName) { forceStopPackageAsUser(packageName, mContext.getUserId()); } /** * Get the device configuration attributes. */ public ConfigurationInfo getDeviceConfigurationInfo() { try { return getService().getDeviceConfigurationInfo(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Get the preferred density of icons for the launcher. This is used when * custom drawables are created (e.g., for shortcuts). * * @return density in terms of DPI */ public int getLauncherLargeIconDensity() { final Resources res = mContext.getResources(); final int density = res.getDisplayMetrics().densityDpi; final int sw = res.getConfiguration().smallestScreenWidthDp; if (sw < 600) { // Smaller than approx 7" tablets, use the regular icon size. return density; } switch (density) { case DisplayMetrics.DENSITY_LOW: return DisplayMetrics.DENSITY_MEDIUM; case DisplayMetrics.DENSITY_MEDIUM: return DisplayMetrics.DENSITY_HIGH; case DisplayMetrics.DENSITY_TV: return DisplayMetrics.DENSITY_XHIGH; case DisplayMetrics.DENSITY_HIGH: return DisplayMetrics.DENSITY_XHIGH; case DisplayMetrics.DENSITY_XHIGH: return DisplayMetrics.DENSITY_XXHIGH; case DisplayMetrics.DENSITY_XXHIGH: return DisplayMetrics.DENSITY_XHIGH * 2; default: // The density is some abnormal value. Return some other // abnormal value that is a reasonable scaling of it. return (int) ((density * 1.5f) + .5f); } } /** * Get the preferred launcher icon size. This is used when custom drawables * are created (e.g., for shortcuts). * * @return dimensions of square icons in terms of pixels */ public int getLauncherLargeIconSize() { return getLauncherLargeIconSizeInner(mContext); } static int getLauncherLargeIconSizeInner(Context context) { final Resources res = context.getResources(); final int size = res.getDimensionPixelSize(android.R.dimen.app_icon_size); final int sw = res.getConfiguration().smallestScreenWidthDp; if (sw < 600) { // Smaller than approx 7" tablets, use the regular icon size. return size; } final int density = res.getDisplayMetrics().densityDpi; switch (density) { case DisplayMetrics.DENSITY_LOW: return (size * DisplayMetrics.DENSITY_MEDIUM) / DisplayMetrics.DENSITY_LOW; case DisplayMetrics.DENSITY_MEDIUM: return (size * DisplayMetrics.DENSITY_HIGH) / DisplayMetrics.DENSITY_MEDIUM; case DisplayMetrics.DENSITY_TV: return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; case DisplayMetrics.DENSITY_HIGH: return (size * DisplayMetrics.DENSITY_XHIGH) / DisplayMetrics.DENSITY_HIGH; case DisplayMetrics.DENSITY_XHIGH: return (size * DisplayMetrics.DENSITY_XXHIGH) / DisplayMetrics.DENSITY_XHIGH; case DisplayMetrics.DENSITY_XXHIGH: return (size * DisplayMetrics.DENSITY_XHIGH * 2) / DisplayMetrics.DENSITY_XXHIGH; default: // The density is some abnormal value. Return some other // abnormal value that is a reasonable scaling of it. return (int) ((size * 1.5f) + .5f); } } /** * Returns "true" if the user interface is currently being messed with * by a monkey. */ public static boolean isUserAMonkey() { try { return getService().isUserAMonkey(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Returns "true" if device is running in a test harness. */ public static boolean isRunningInTestHarness() { return SystemProperties.getBoolean("ro.test_harness", false); } /** * Unsupported compiled sdk warning should always be shown for the intput activity * even in cases where the system would normally not show the warning. E.g. when running in a * test harness. * * @param activity The component name of the activity to always show the warning for. * * @hide */ @TestApi public void alwaysShowUnsupportedCompileSdkWarning(ComponentName activity) { try { getService().alwaysShowUnsupportedCompileSdkWarning(activity); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Returns the launch count of each installed package. * * @hide */ /*public Map<String, Integer> getAllPackageLaunchCounts() { try { IUsageStats usageStatsService = IUsageStats.Stub.asInterface( ServiceManager.getService("usagestats")); if (usageStatsService == null) { return new HashMap<String, Integer>(); } UsageStats.PackageStats[] allPkgUsageStats = usageStatsService.getAllPkgUsageStats( ActivityThread.currentPackageName()); if (allPkgUsageStats == null) { return new HashMap<String, Integer>(); } Map<String, Integer> launchCounts = new HashMap<String, Integer>(); for (UsageStats.PackageStats pkgUsageStats : allPkgUsageStats) { launchCounts.put(pkgUsageStats.getPackageName(), pkgUsageStats.getLaunchCount()); } return launchCounts; } catch (RemoteException e) { Log.w(TAG, "Could not query launch counts", e); return new HashMap<String, Integer>(); } }*/ /** @hide */ @UnsupportedAppUsage public static int checkComponentPermission(String permission, int uid, int owningUid, boolean exported) { // Root, system server get to do everything. final int appId = UserHandle.getAppId(uid); if (appId == Process.ROOT_UID || appId == Process.SYSTEM_UID) { return PackageManager.PERMISSION_GRANTED; } // Isolated processes don't get any permissions. if (UserHandle.isIsolated(uid)) { return PackageManager.PERMISSION_DENIED; } // If there is a uid that owns whatever is being accessed, it has // blanket access to it regardless of the permissions it requires. if (owningUid >= 0 && UserHandle.isSameApp(uid, owningUid)) { return PackageManager.PERMISSION_GRANTED; } // If the target is not exported, then nobody else can get to it. if (!exported) { /* RuntimeException here = new RuntimeException("here"); here.fillInStackTrace(); Slog.w(TAG, "Permission denied: checkComponentPermission() owningUid=" + owningUid, here); */ return PackageManager.PERMISSION_DENIED; } if (permission == null) { return PackageManager.PERMISSION_GRANTED; } try { return AppGlobals.getPackageManager().checkUidPermission(permission, uid); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** @hide */ public static int checkUidPermission(String permission, int uid) { try { return AppGlobals.getPackageManager().checkUidPermission(permission, uid); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * @hide * Helper for dealing with incoming user arguments to system service calls. * Takes care of checking permissions and converting USER_CURRENT to the * actual current user. * * @param callingPid The pid of the incoming call, as per Binder.getCallingPid(). * @param callingUid The uid of the incoming call, as per Binder.getCallingUid(). * @param userId The user id argument supplied by the caller -- this is the user * they want to run as. * @param allowAll If true, we will allow USER_ALL. This means you must be prepared * to get a USER_ALL returned and deal with it correctly. If false, * an exception will be thrown if USER_ALL is supplied. * @param requireFull If true, the caller must hold * {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} to be able to run as a * different user than their current process; otherwise they must hold * {@link android.Manifest.permission#INTERACT_ACROSS_USERS}. * @param name Optional textual name of the incoming call; only for generating error messages. * @param callerPackage Optional package name of caller; only for error messages. * * @return Returns the user ID that the call should run as. Will always be a concrete * user number, unless <var>allowAll</var> is true in which case it could also be * USER_ALL. */ public static int handleIncomingUser(int callingPid, int callingUid, int userId, boolean allowAll, boolean requireFull, String name, String callerPackage) { if (UserHandle.getUserId(callingUid) == userId) { return userId; } try { return getService().handleIncomingUser(callingPid, callingUid, userId, allowAll, requireFull, name, callerPackage); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Gets the userId of the current foreground user. Requires system permissions. * @hide */ @SystemApi @RequiresPermission(anyOf = { "android.permission.INTERACT_ACROSS_USERS", "android.permission.INTERACT_ACROSS_USERS_FULL" }) public static int getCurrentUser() { UserInfo ui; try { ui = getService().getCurrentUser(); return ui != null ? ui.id : 0; } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * @param userid the user's id. Zero indicates the default user. * @hide */ @UnsupportedAppUsage public boolean switchUser(int userid) { try { return getService().switchUser(userid); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Logs out current current foreground user by switching to the system user and stopping the * user being switched from. * @hide */ public static void logoutCurrentUser() { int currentUser = ActivityManager.getCurrentUser(); if (currentUser != UserHandle.USER_SYSTEM) { try { getService().switchUser(UserHandle.USER_SYSTEM); getService().stopUser(currentUser, /* force= */ false, null); } catch (RemoteException e) { e.rethrowFromSystemServer(); } } } /** {@hide} */ public static final int FLAG_OR_STOPPED = 1 << 0; /** {@hide} */ public static final int FLAG_AND_LOCKED = 1 << 1; /** {@hide} */ public static final int FLAG_AND_UNLOCKED = 1 << 2; /** {@hide} */ public static final int FLAG_AND_UNLOCKING_OR_UNLOCKED = 1 << 3; /** * Return whether the given user is actively running. This means that * the user is in the "started" state, not "stopped" -- it is currently * allowed to run code through scheduled alarms, receiving broadcasts, * etc. A started user may be either the current foreground user or a * background user; the result here does not distinguish between the two. * @param userId the user's id. Zero indicates the default user. * @hide */ @UnsupportedAppUsage public boolean isUserRunning(int userId) { try { return getService().isUserRunning(userId, 0); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** {@hide} */ public boolean isVrModePackageEnabled(ComponentName component) { try { return getService().isVrModePackageEnabled(component); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Perform a system dump of various state associated with the given application * package name. This call blocks while the dump is being performed, so should * not be done on a UI thread. The data will be written to the given file * descriptor as text. * @param fd The file descriptor that the dump should be written to. The file * descriptor is <em>not</em> closed by this function; the caller continues to * own it. * @param packageName The name of the package that is to be dumped. */ @RequiresPermission(Manifest.permission.DUMP) public void dumpPackageState(FileDescriptor fd, String packageName) { dumpPackageStateStatic(fd, packageName); } /** * @hide */ public static void dumpPackageStateStatic(FileDescriptor fd, String packageName) { FileOutputStream fout = new FileOutputStream(fd); PrintWriter pw = new FastPrintWriter(fout); dumpService(pw, fd, "package", new String[] { packageName }); pw.println(); dumpService(pw, fd, Context.ACTIVITY_SERVICE, new String[] { "-a", "package", packageName }); pw.println(); dumpService(pw, fd, "meminfo", new String[] { "--local", "--package", packageName }); pw.println(); dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName }); pw.println(); dumpService(pw, fd, "usagestats", new String[] { packageName }); pw.println(); dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName }); pw.flush(); } /** * @hide */ public static boolean isSystemReady() { if (!sSystemReady) { if (ActivityThread.isSystem()) { sSystemReady = LocalServices.getService(ActivityManagerInternal.class).isSystemReady(); } else { // Since this is being called from outside system server, system should be // ready by now. sSystemReady = true; } } return sSystemReady; } /** * @hide */ public static void broadcastStickyIntent(Intent intent, int userId) { broadcastStickyIntent(intent, AppOpsManager.OP_NONE, userId); } /** * Convenience for sending a sticky broadcast. For internal use only. * * @hide */ public static void broadcastStickyIntent(Intent intent, int appOp, int userId) { try { getService().broadcastIntent(null, intent, null, null, Activity.RESULT_OK, null, null, null /*permission*/, appOp, null, false, true, userId); } catch (RemoteException ex) { } } /** * @hide */ public static void noteWakeupAlarm(PendingIntent ps, WorkSource workSource, int sourceUid, String sourcePkg, String tag) { try { getService().noteWakeupAlarm((ps != null) ? ps.getTarget() : null, workSource, sourceUid, sourcePkg, tag); } catch (RemoteException ex) { } } /** * @hide */ public static void noteAlarmStart(PendingIntent ps, WorkSource workSource, int sourceUid, String tag) { try { getService().noteAlarmStart((ps != null) ? ps.getTarget() : null, workSource, sourceUid, tag); } catch (RemoteException ex) { } } /** * @hide */ public static void noteAlarmFinish(PendingIntent ps, WorkSource workSource, int sourceUid, String tag) { try { getService().noteAlarmFinish((ps != null) ? ps.getTarget() : null, workSource, sourceUid, tag); } catch (RemoteException ex) { } } /** * @hide */ @UnsupportedAppUsage public static IActivityManager getService() { return IActivityManagerSingleton.get(); } @UnsupportedAppUsage private static final Singleton<IActivityManager> IActivityManagerSingleton = new Singleton<IActivityManager>() { @Override protected IActivityManager create() { final IBinder b = ServiceManager.getService(Context.ACTIVITY_SERVICE); final IActivityManager am = IActivityManager.Stub.asInterface(b); return am; } }; private static void dumpService(PrintWriter pw, FileDescriptor fd, String name, String[] args) { pw.print("DUMP OF SERVICE "); pw.print(name); pw.println(":"); IBinder service = ServiceManager.checkService(name); if (service == null) { pw.println(" (Service not found)"); pw.flush(); return; } pw.flush(); if (service instanceof Binder) { // If this is a local object, it doesn't make sense to do an async dump with it, // just directly dump. try { service.dump(fd, args); } catch (Throwable e) { pw.println("Failure dumping service:"); e.printStackTrace(pw); pw.flush(); } } else { // Otherwise, it is remote, do the dump asynchronously to avoid blocking. TransferPipe tp = null; try { pw.flush(); tp = new TransferPipe(); tp.setBufferPrefix(" "); service.dumpAsync(tp.getWriteFd().getFileDescriptor(), args); tp.go(fd, 10000); } catch (Throwable e) { if (tp != null) { tp.kill(); } pw.println("Failure dumping service:"); e.printStackTrace(pw); } } } /** * Request that the system start watching for the calling process to exceed a pss * size as given here. Once called, the system will look for any occasions where it * sees the associated process with a larger pss size and, when this happens, automatically * pull a heap dump from it and allow the user to share the data. Note that this request * continues running even if the process is killed and restarted. To remove the watch, * use {@link #clearWatchHeapLimit()}. * * <p>This API only work if the calling process has been marked as * {@link ApplicationInfo#FLAG_DEBUGGABLE} or this is running on a debuggable * (userdebug or eng) build.</p> * * <p>Callers can optionally implement {@link #ACTION_REPORT_HEAP_LIMIT} to directly * handle heap limit reports themselves.</p> * * @param pssSize The size in bytes to set the limit at. */ public void setWatchHeapLimit(long pssSize) { try { getService().setDumpHeapDebugLimit(null, 0, pssSize, mContext.getPackageName()); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Action an app can implement to handle reports from {@link #setWatchHeapLimit(long)}. * If your package has an activity handling this action, it will be launched with the * heap data provided to it the same way as {@link Intent#ACTION_SEND}. Note that to * match the activty must support this action and a MIME type of "*/*". */ public static final String ACTION_REPORT_HEAP_LIMIT = "android.app.action.REPORT_HEAP_LIMIT"; /** * Clear a heap watch limit previously set by {@link #setWatchHeapLimit(long)}. */ public void clearWatchHeapLimit() { try { getService().setDumpHeapDebugLimit(null, 0, 0, null); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Return whether currently in lock task mode. When in this mode * no new tasks can be created or switched to. * * @see Activity#startLockTask() * * @deprecated Use {@link #getLockTaskModeState} instead. */ @Deprecated public boolean isInLockTaskMode() { return getLockTaskModeState() != LOCK_TASK_MODE_NONE; } /** * Return the current state of task locking. The three possible outcomes * are {@link #LOCK_TASK_MODE_NONE}, {@link #LOCK_TASK_MODE_LOCKED} * and {@link #LOCK_TASK_MODE_PINNED}. * * @see Activity#startLockTask() */ public int getLockTaskModeState() { try { return getService().getLockTaskModeState(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. Only one * thread can be a VR thread in a process at a time, and that thread may be subject to * restrictions on the amount of time it can run. * * If persistent VR mode is set, whatever thread has been granted aggressive scheduling via this * method will return to normal operation, and calling this method will do nothing while * persistent VR mode is enabled. * * To reset the VR thread for an application, a tid of 0 can be passed. * * @see android.os.Process#myTid() * @param tid tid of the VR thread */ public static void setVrThread(int tid) { try { getService().setVrThread(tid); } catch (RemoteException e) { // pass } } /** * Enable more aggressive scheduling for latency-sensitive low-runtime VR threads that persist * beyond a single process. Only one thread can be a * persistent VR thread at a time, and that thread may be subject to restrictions on the amount * of time it can run. Calling this method will disable aggressive scheduling for non-persistent * VR threads set via {@link #setVrThread}. If persistent VR mode is disabled then the * persistent VR thread loses its new scheduling priority; this method must be called again to * set the persistent thread. * * To reset the persistent VR thread, a tid of 0 can be passed. * * @see android.os.Process#myTid() * @param tid tid of the VR thread * @hide */ @RequiresPermission(Manifest.permission.RESTRICTED_VR_ACCESS) @UnsupportedAppUsage public static void setPersistentVrThread(int tid) { try { getService().setPersistentVrThread(tid); } catch (RemoteException e) { // pass } } /** * The AppTask allows you to manage your own application's tasks. * See {@link android.app.ActivityManager#getAppTasks()} */ public static class AppTask { private IAppTask mAppTaskImpl; /** @hide */ public AppTask(IAppTask task) { mAppTaskImpl = task; } /** * Finishes all activities in this task and removes it from the recent tasks list. */ public void finishAndRemoveTask() { try { mAppTaskImpl.finishAndRemoveTask(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Get the RecentTaskInfo associated with this task. * * @return The RecentTaskInfo for this task, or null if the task no longer exists. */ public RecentTaskInfo getTaskInfo() { try { return mAppTaskImpl.getTaskInfo(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Bring this task to the foreground. If it contains activities, they will be * brought to the foreground with it and their instances re-created if needed. * If it doesn't contain activities, the root activity of the task will be * re-launched. */ public void moveToFront() { try { mAppTaskImpl.moveToFront(); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } /** * Start an activity in this task. Brings the task to the foreground. If this task * is not currently active (that is, its id < 0), then a new activity for the given * Intent will be launched as the root of the task and the task brought to the * foreground. Otherwise, if this task is currently active and the Intent does not specify * an activity to launch in a new task, then a new activity for the given Intent will * be launched on top of the task and the task brought to the foreground. If this * task is currently active and the Intent specifies {@link Intent#FLAG_ACTIVITY_NEW_TASK} * or would otherwise be launched in to a new task, then the activity not launched but * this task be brought to the foreground and a new intent delivered to the top * activity if appropriate. * * <p>In other words, you generally want to use an Intent here that does not specify * {@link Intent#FLAG_ACTIVITY_NEW_TASK} or {@link Intent#FLAG_ACTIVITY_NEW_DOCUMENT}, * and let the system do the right thing.</p> * * @param intent The Intent describing the new activity to be launched on the task. * @param options Optional launch options. * * @see Activity#startActivity(android.content.Intent, android.os.Bundle) */ public void startActivity(Context context, Intent intent, Bundle options) { ActivityThread thread = ActivityThread.currentActivityThread(); thread.getInstrumentation().execStartActivityFromAppTask(context, thread.getApplicationThread(), mAppTaskImpl, intent, options); } /** * Modify the {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} flag in the root * Intent of this AppTask. * * @param exclude If true, {@link Intent#FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS} will * be set; otherwise, it will be cleared. */ public void setExcludeFromRecents(boolean exclude) { try { mAppTaskImpl.setExcludeFromRecents(exclude); } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } } } }