Class android.app.ActivityManager

Added Methods
int addAppTask(Activity, Intent, TaskDescription, Bitmap)  
Size getAppTaskThumbnailSize()  
List<AppTask> getAppTasks()  
boolean isInLockTaskMode()  
 

Changed Methods
List<RecentTaskInfo> getRecentTasks(int, int) Now deprecated.
  
List<RunningTaskInfo> getRunningTasks(int) Now deprecated.