public class ActivityManager

extends Object

This class gives information about, and interacts with, activities, services, and the containing process.

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.

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, isLowRamDevice() enables your app to detect whether it is running on a low-memory device, and behave accordingly. clearApplicationUserData() is for apps with reset-data functionality.

In some special use cases, where an app interacts with its Task stack, the app may use the ActivityManager.AppTask and ActivityManager.RecentTaskInfo inner classes. However, in general, the methods in this class should be used for testing and debugging purposes only.

Nested classes

class ActivityManager.AppTask The AppTask allows you to manage your own application's tasks.

class ActivityManager.MemoryInfo Information you can retrieve about the available memory through ActivityManager#getMemoryInfo .

class ActivityManager.ProcessErrorStateInfo Information you can retrieve about any processes that are in an error condition.

class ActivityManager.RecentTaskInfo Information you can retrieve about tasks that the user has most recently started or visited.

class ActivityManager.RunningAppProcessInfo Information you can retrieve about a running process.

class ActivityManager.RunningServiceInfo Information you can retrieve about a particular Service that is currently running in the system.

class ActivityManager.RunningTaskInfo Information you can retrieve about a particular task that is currently "running" in the system.

class ActivityManager.TaskDescription Information you can set and retrieve about the current activity within the recent task list.

Constants String ACTION_REPORT_HEAP_LIMIT Action an app can implement to handle reports from setWatchHeapLimit(long) . int LOCK_TASK_MODE_LOCKED Full lock task mode is active. int LOCK_TASK_MODE_NONE Lock task mode is not active. int LOCK_TASK_MODE_PINNED App pinning mode is active. String META_HOME_ALTERNATE <meta-data> name for a 'home' Activity that declares a package that is to be uninstalled in lieu of the declaring one. int MOVE_TASK_NO_USER_ACTION Flag for 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. int MOVE_TASK_WITH_HOME Flag for moveTaskToFront(int, int) : also move the "home" activity along with the task, so it is positioned immediately behind the task. int RECENT_IGNORE_UNAVAILABLE Provides a list that does not contain any recent tasks that currently are not available to the user. int RECENT_WITH_EXCLUDED Flag for use with getRecentTasks(int, int) : return all tasks, even those that have set their Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS flag.

Public methods int addAppTask(Activity activity, Intent intent, ActivityManager.TaskDescription description, Bitmap thumbnail) Add a new AppTask for the calling application. void appNotResponding(String reason) Method for the app to tell system that it's wedged and would like to trigger an ANR. boolean clearApplicationUserData() Permits an application to erase its own data from disk. void clearWatchHeapLimit() Clear a heap watch limit previously set by setWatchHeapLimit(long) . void dumpPackageState(FileDescriptor fd, String packageName) Perform a system dump of various state associated with the given application package name. Size getAppTaskThumbnailSize() Return the current design dimensions for AppTask thumbnails, for use with addAppTask(Activity, Intent, ActivityManager.TaskDescription, Bitmap) . List<ActivityManager.AppTask> getAppTasks() Get the list of tasks associated with the calling application. ConfigurationInfo getDeviceConfigurationInfo() Get the device configuration attributes. List<ApplicationExitInfo> getHistoricalProcessExitReasons(String packageName, int pid, int maxNum) Return a list of ApplicationExitInfo records containing the reasons for the most recent app deaths. int getLargeMemoryClass() Return the approximate per-application memory class of the current device when an application is running with a large heap. int getLauncherLargeIconDensity() Get the preferred density of icons for the launcher. int getLauncherLargeIconSize() Get the preferred launcher icon size. int getLockTaskModeState() Return the current state of task locking. int getMemoryClass() Return the approximate per-application memory class of the current device. void getMemoryInfo(ActivityManager.MemoryInfo outInfo) Return general information about the memory state of the system. static void getMyMemoryState(ActivityManager.RunningAppProcessInfo outState) Return global memory state information for the calling process. MemoryInfo[] getProcessMemoryInfo(int[] pids) Return information about the memory usage of one or more processes. List<ActivityManager.ProcessErrorStateInfo> getProcessesInErrorState() Returns a list of any processes that are currently in an error condition. List<ActivityManager.RecentTaskInfo> getRecentTasks(int maxNum, int flags) This method was deprecated in API level 21. As of 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 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. List<ActivityManager.RunningAppProcessInfo> getRunningAppProcesses() Returns a list of application processes that are running on the device. PendingIntent getRunningServiceControlPanel(ComponentName service) Returns a PendingIntent you can start to show a control panel for the given running service. List<ActivityManager.RunningServiceInfo> getRunningServices(int maxNum) This method was deprecated in API level 26. As of 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. List<ActivityManager.RunningTaskInfo> getRunningTasks(int maxNum) This method was deprecated in API level 21. As of 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. boolean isActivityStartAllowedOnDisplay(Context context, int displayId, Intent intent) Check if the context is allowed to start an activity on specified display. boolean isBackgroundRestricted() Query whether the user has enabled background restrictions for this app. boolean isInLockTaskMode() This method was deprecated in API level 23. Use getLockTaskModeState() instead. static boolean isLowMemoryKillReportSupported() boolean isLowRamDevice() Returns true if this is a low-RAM device. static boolean isRunningInTestHarness() This method was deprecated in API level 29. this method is false for all user builds. Users looking to check if their device is running in a device farm should see isRunningInUserTestHarness() . static boolean isRunningInUserTestHarness() Returns "true" if the device is running in Test Harness Mode. static boolean isUserAMonkey() Returns "true" if the user interface is currently being messed with by a monkey. void killBackgroundProcesses(String packageName) Have the system immediately kill all background processes associated with the given package. void moveTaskToFront(int taskId, int flags, Bundle options) 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. void moveTaskToFront(int taskId, int flags) Equivalent to calling moveTaskToFront(int, int, android.os.Bundle) with a null options argument. void restartPackage(String packageName) This method was deprecated in API level 15. This is now just a wrapper for killBackgroundProcesses(java.lang.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. void setProcessStateSummary(byte[] state) Set custom state data for this process. static void setVrThread(int tid) Enable more aggressive scheduling for latency-sensitive low-runtime VR threads. void setWatchHeapLimit(long pssSize) Request that the system start watching for the calling process to exceed a pss size as given here.

Inherited methods java.lang.Object From class Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object . int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed. final void wait(long timeout) Causes the current thread to wait until either another thread invokes the notify() method or the notifyAll() method for this object, or a specified amount of time has elapsed. final void wait() Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object.

Constants

ACTION_REPORT_HEAP_LIMIT Added in API level 23 public static final String ACTION_REPORT_HEAP_LIMIT Action an app can implement to handle reports from 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 Intent#ACTION_SEND . Note that to match, the activity must support this action and a MIME type of "*/*". Constant Value: "android.app.action.REPORT_HEAP_LIMIT"

LOCK_TASK_MODE_LOCKED Added in API level 23 public static final int LOCK_TASK_MODE_LOCKED Full lock task mode is active. Constant Value: 1 (0x00000001)

LOCK_TASK_MODE_NONE Added in API level 23 public static final int LOCK_TASK_MODE_NONE Lock task mode is not active. Constant Value: 0 (0x00000000)

LOCK_TASK_MODE_PINNED Added in API level 23 public static final int LOCK_TASK_MODE_PINNED App pinning mode is active. Constant Value: 2 (0x00000002)

META_HOME_ALTERNATE Added in API level 19 public static final String META_HOME_ALTERNATE <meta-data> 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 <meta-data> . Constant Value: "android.app.home.alternate"

MOVE_TASK_NO_USER_ACTION Added in API level 12 public static final int MOVE_TASK_NO_USER_ACTION Flag for 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. Constant Value: 2 (0x00000002)

MOVE_TASK_WITH_HOME Added in API level 11 public static final int MOVE_TASK_WITH_HOME Flag for moveTaskToFront(int, int) : also move the "home" activity along with the task, so it is positioned immediately behind the task. Constant Value: 1 (0x00000001)

RECENT_IGNORE_UNAVAILABLE Added in API level 11 public static final int RECENT_IGNORE_UNAVAILABLE Provides a list that does not contain any recent tasks that currently are not available to the user. Constant Value: 2 (0x00000002)

RECENT_WITH_EXCLUDED Added in API level 1 public static final int RECENT_WITH_EXCLUDED Flag for use with getRecentTasks(int, int) : return all tasks, even those that have set their Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS flag. Constant Value: 1 (0x00000001)

Public methods

addAppTask Added in API level 21 public int addAppTask (Activity activity, Intent intent, ActivityManager.TaskDescription description, Bitmap thumbnail) Add a new AppTask for the calling application. This will create a new recents entry that is added to the end of all existing recents. Parameters activity Activity : The activity that is adding the entry. This is used to help determine the context that the new recents entry will be in. This value cannot be null . intent 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 Intent#FLAG_ACTIVITY_NEW_DOCUMENT and 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. This value cannot be null . description ActivityManager.TaskDescription : Optional additional description information. This value may be null . thumbnail Bitmap : Thumbnail to use for the recents entry. Should be the size given by 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. This value cannot be null . Returns int 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.

appNotResponding Added in API level 30 public void appNotResponding (String reason) Method for the app to tell system that it's wedged and would like to trigger an ANR. Parameters reason String : The description of that what happened This value cannot be null .

clearApplicationUserData Added in API level 19 public boolean clearApplicationUserData () 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. Returns boolean true if the application successfully requested that the application's data be erased; false otherwise.

clearWatchHeapLimit Added in API level 23 public void clearWatchHeapLimit () Clear a heap watch limit previously set by setWatchHeapLimit(long) .

dumpPackageState Added in API level 19 public void dumpPackageState (FileDescriptor fd, String packageName) 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.

Requires Manifest.permission.DUMP Parameters fd FileDescriptor : The file descriptor that the dump should be written to. The file descriptor is not closed by this function; the caller continues to own it. packageName String : The name of the package that is to be dumped.

getAppTasks Added in API level 21 public List<ActivityManager.AppTask> getAppTasks () Get the list of tasks associated with the calling application. Returns List<ActivityManager.AppTask> The list of tasks associated with the application making this call. Throws java.lang.SecurityException

getDeviceConfigurationInfo Added in API level 3 public ConfigurationInfo getDeviceConfigurationInfo () Get the device configuration attributes. Returns ConfigurationInfo

getHistoricalProcessExitReasons Added in API level 30 public List<ApplicationExitInfo> getHistoricalProcessExitReasons (String packageName, int pid, int maxNum) Return a list of ApplicationExitInfo records containing the reasons for the most recent app deaths. Note: System stores this historical information in a ring buffer and only the most recent records will be returned. Note: In the case that this application was bound to an external service with flag Context.BIND_EXTERNAL_SERVICE , the process of that external service will be included in this package's exit info. Parameters packageName String : Optional, a null value means match all packages belonging to the caller's UID. If this package belongs to another UID, you must hold Manifest.permission.DUMP in order to retrieve it. This value may be null . pid int : A process ID that used to belong to this package but died later; a value of 0 means to ignore this parameter and return all matching records. Value is 0 or greater maxNum int : The maximum number of results to be returned; a value of 0 means to ignore this parameter and return all matching records Value is 0 or greater Returns List<ApplicationExitInfo> a list of ApplicationExitInfo records matching the criteria, sorted in the order from most recent to least recent.

getLargeMemoryClass Added in API level 11 public int getLargeMemoryClass () 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 getMemoryClass() limit. The returned value is in megabytes. This may be the same size as getMemoryClass() on memory constrained devices, or it may be significantly larger on devices with a large amount of available RAM. This is the size of the application's Dalvik heap if it has specified android:largeHeap="true" in its manifest. Returns int

getLauncherLargeIconDensity Added in API level 11 public int getLauncherLargeIconDensity () Get the preferred density of icons for the launcher. This is used when custom drawables are created (e.g., for shortcuts). Returns int density in terms of DPI

getLauncherLargeIconSize Added in API level 11 public int getLauncherLargeIconSize () Get the preferred launcher icon size. This is used when custom drawables are created (e.g., for shortcuts). Returns int dimensions of square icons in terms of pixels

getLockTaskModeState Added in API level 23 public int getLockTaskModeState () Return the current state of task locking. The three possible outcomes are LOCK_TASK_MODE_NONE , LOCK_TASK_MODE_LOCKED and LOCK_TASK_MODE_PINNED . Returns int See also: Activity.startLockTask()

getMemoryClass Added in API level 5 public int getMemoryClass () 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. Returns int

getMemoryInfo Added in API level 1 public void getMemoryInfo (ActivityManager.MemoryInfo outInfo) 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 ComponentCallbacks2.onTrimMemory(int) is the preferred way to do this. Also see getMyMemoryState(ActivityManager.RunningAppProcessInfo) for how to retrieve the current trim level of your process as needed, which gives a better hint for how to manage its memory. Parameters outInfo ActivityManager.MemoryInfo

getMyMemoryState Added in API level 16 public static void getMyMemoryState (ActivityManager.RunningAppProcessInfo outState) Return global memory state information for the calling process. This does not fill in all fields of the RunningAppProcessInfo . The only fields that will be filled in are RunningAppProcessInfo#pid , RunningAppProcessInfo#uid , RunningAppProcessInfo#lastTrimLevel , RunningAppProcessInfo#importance , RunningAppProcessInfo#lru , and RunningAppProcessInfo#importanceReasonCode . Parameters outState ActivityManager.RunningAppProcessInfo

getProcessMemoryInfo Added in API level 5 public MemoryInfo[] getProcessMemoryInfo (int[] pids) Return information about the memory usage of one or more processes. Note: this method is only intended for debugging or building a user-facing process management UI. As of Android Q , for regular apps this method will only return information about the memory info for the processes running as the caller's uid; no other process memory info is available and will be zero. Also of Android Q the sample rate allowed by this API is significantly limited, if called faster the limit you will receive the same data as the previous call. Parameters pids int : The pids of the processes whose memory usage is to be retrieved. Returns MemoryInfo[] Returns an array of memory information, one for each requested pid.

getProcessesInErrorState Added in API level 1 public List<ActivityManager.ProcessErrorStateInfo> getProcessesInErrorState () 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. Returns List<ActivityManager.ProcessErrorStateInfo> 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.

getRecentTasks

Deprecated in Added in API level 1 Deprecated in API level 21 public List<ActivityManager.RecentTaskInfo> getRecentTasks (int maxNum, int flags) This method was deprecated in API level 21.

As of 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 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. Return a list of the tasks that the user has recently launched, with the most recent being first and older ones after in order. Return a list of the tasks that the user has recently launched, with the most recent being first and older ones after in order. Note: this method is only intended for debugging and presenting task management user interfaces. 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 not 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. Parameters maxNum int : 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. flags int : Information about what to return. May be any combination of RECENT_WITH_EXCLUDED and RECENT_IGNORE_UNAVAILABLE . Returns List<ActivityManager.RecentTaskInfo> Returns a list of RecentTaskInfo records describing each of the recent tasks. Throws SecurityException

getRunningAppProcesses Added in API level 3 public List<ActivityManager.RunningAppProcessInfo> getRunningAppProcesses () Returns a list of application processes that are running on the device. Note: this method is only intended for debugging or building a user-facing process management UI. Returns List<ActivityManager.RunningAppProcessInfo> 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.

getRunningServiceControlPanel Added in API level 5 public PendingIntent getRunningServiceControlPanel (ComponentName service) 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. Parameters service ComponentName Returns PendingIntent Throws SecurityException

getRunningServices

Deprecated in Added in API level 1 Deprecated in API level 26 public List<ActivityManager.RunningServiceInfo> getRunningServices (int maxNum) This method was deprecated in API level 26.

As of 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. Return a list of the services that are currently running. Note: this method is only intended for debugging or implementing service management type user interfaces. Parameters maxNum int : The maximum number of entries to return in the list. The actual number returned may be smaller, depending on how many services are running. Returns List<ActivityManager.RunningServiceInfo> Returns a list of RunningServiceInfo records describing each of the running tasks. Throws SecurityException

getRunningTasks

Deprecated in Added in API level 1 Deprecated in API level 21 public List<ActivityManager.RunningTaskInfo> getRunningTasks (int maxNum) This method was deprecated in API level 21.

As of 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. 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. Note: this method is only intended for debugging and presenting task management user interfaces. 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 not 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. Parameters maxNum int : 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. Returns List<ActivityManager.RunningTaskInfo> Returns a list of RunningTaskInfo records describing each of the running tasks. Throws SecurityException

isActivityStartAllowedOnDisplay Added in API level 29 public boolean isActivityStartAllowedOnDisplay (Context context, int displayId, Intent intent) Check if the context is allowed to start an activity on specified display. Some launch restrictions may apply to secondary displays that are private, virtual, or owned by the system, in which case an activity start may throw a SecurityException . Call this method prior to starting an activity on a secondary display to check if the current context has access to it. Parameters context Context : Source context, from which an activity will be started. This value cannot be null . displayId int : Target display id. intent Intent : Intent used to launch an activity. This value cannot be null . Returns boolean true if a call to start an activity on the target display is allowed for the provided context and no SecurityException will be thrown, false otherwise. See also: ActivityOptions.setLaunchDisplayId(int)

Display.FLAG_PRIVATE

isBackgroundRestricted Added in API level 28 public boolean isBackgroundRestricted () Query whether the user has enabled background restrictions for this app. The user may chose to do this, if they see that an app is consuming an unreasonable amount of battery while in the background. 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. Note that these restrictions stay in effect even when the device is charging. Returns boolean true if user has enforced background restrictions for this app, false otherwise.

isInLockTaskMode

Deprecated in Added in API level 21 Deprecated in API level 23 public boolean isInLockTaskMode () This method was deprecated in API level 23.

Use getLockTaskModeState() instead. Return whether currently in lock task mode. When in this mode no new tasks can be created or switched to. Returns boolean See also: Activity.startLockTask()

isLowMemoryKillReportSupported Added in API level 30 public static boolean isLowMemoryKillReportSupported () Returns boolean Whether or not the low memory kill will be reported in getHistoricalProcessExitReasons(String, int, int) . See also: ApplicationExitInfo.REASON_LOW_MEMORY

isLowRamDevice Added in API level 19 public boolean isLowRamDevice () 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. Returns boolean

isRunningInTestHarness

Deprecated in Added in API level 11 Deprecated in API level 29 public static boolean isRunningInTestHarness () This method was deprecated in API level 29.

this method is false for all user builds. Users looking to check if their device is running in a device farm should see isRunningInUserTestHarness() . Returns "true" if device is running in a test harness. Returns boolean

isRunningInUserTestHarness Added in API level 29 public static boolean isRunningInUserTestHarness () Returns "true" if the device is running in Test Harness Mode. Test Harness Mode is a feature that allows devices to run without human interaction in a device farm/testing harness (such as Firebase Test Lab). You should check this method if you want your app to behave differently when running in a test harness to skip setup screens that would impede UI testing. e.g. a keyboard application that has a full screen setup page for the first time it is launched. Note that you should not use this to determine whether or not your app is running an instrumentation test, as it is not set for a standard device running a test. Returns boolean

isUserAMonkey Added in API level 8 public static boolean isUserAMonkey () Returns "true" if the user interface is currently being messed with by a monkey. Returns boolean

killBackgroundProcesses Added in API level 8 public void killBackgroundProcesses (String 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.

Requires Manifest.permission.KILL_BACKGROUND_PROCESSES Parameters packageName String : The name of the package whose processes are to be killed.

moveTaskToFront Added in API level 16 public void moveTaskToFront (int taskId, int flags, Bundle options) 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.

Requires Manifest.permission.REORDER_TASKS Parameters taskId int : The identifier of the task to be moved, as found in RunningTaskInfo or RecentTaskInfo . flags int : Additional operational flags. Value is either 0 or a combination of MOVE_TASK_WITH_HOME , and MOVE_TASK_NO_USER_ACTION options Bundle : Additional options for the operation, either null or as per Context#startActivity(Intent, android.os.Bundle) .

moveTaskToFront Added in API level 11 public void moveTaskToFront (int taskId, int flags) Equivalent to calling moveTaskToFront(int, int, android.os.Bundle) with a null options argument.

Requires Manifest.permission.REORDER_TASKS Parameters taskId int : The identifier of the task to be moved, as found in RunningTaskInfo or RecentTaskInfo . flags int : Additional operational flags. Value is either 0 or a combination of MOVE_TASK_WITH_HOME , and MOVE_TASK_NO_USER_ACTION

restartPackage

Deprecated in Added in API level 3 Deprecated in API level 15 public void restartPackage (String packageName) This method was deprecated in API level 15.

This is now just a wrapper for killBackgroundProcesses(java.lang.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. Parameters packageName String

setProcessStateSummary Added in API level 30 public void setProcessStateSummary (byte[] state) Set custom state data for this process. It will be included in the record of ApplicationExitInfo on the death of the current calling process; the new process of the app can retrieve this state data by calling ApplicationExitInfo.getProcessStateSummary() on the record returned by getHistoricalProcessExitReasons(String, int, int) . This would be useful for the calling app to save its stateful data: if it's killed later for any reason, the new process of the app can know what the previous process of the app was doing. For instance, you could use this to encode the current level in a game, or a set of features/experiments that were enabled. Later you could analyze under what circumstances the app tends to crash or use too much memory. However, it's not suggested to rely on this to restore the applications previous UI state or so, it's only meant for analyzing application healthy status. System might decide to throttle the calls to this API; so call this API in a reasonable manner, excessive calls to this API could result a RuntimeException . Parameters state byte : The state data. To be advised, DO NOT include sensitive information/data (PII, SPII, or other sensitive user data) here. Maximum length is 128 bytes. This value may be null .

setVrThread Added in API level 25 public static void setVrThread (int tid) 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. Parameters tid int : tid of the VR thread See also: Process.myTid()

setWatchHeapLimit Added in API level 23 public void setWatchHeapLimit (long pssSize) 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 clearWatchHeapLimit() . This API only works if the calling process has been marked as ApplicationInfo#FLAG_DEBUGGABLE or this is running on a debuggable (userdebug or eng) build. Callers can optionally implement ACTION_REPORT_HEAP_LIMIT to directly handle heap limit reports themselves. Parameters pssSize long : The size in bytes to set the limit at.