Resume application and stack from notification

Question

I want to resume my app from a status bar notification in the exact same manner as when the user taps its icon in the launcher.

That is: I want the stack to be in th

Answer 1

<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.REORDER_TASKS" />

private void bringApplicationToForeground(){
    ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);

    if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

      List<ActivityManager.AppTask> tasksList = am.getAppTasks();
      for (ActivityManager.AppTask task : tasksList){
        task.moveToFront();
      }
    }else{

      List<ActivityManager.RunningTaskInfo> tasksList = am.getRunningTasks(Integer.MAX_VALUE);
      if(!tasksList.isEmpty()){
        int nSize = tasksList.size();
        for(int i = 0; i < nSize;  i++){
          if(tasksList.get(i).topActivity.getPackageName().equals(getPackageName())){
            am.moveTaskToFront(tasksList.get(i).id, 0);
          }
        }
      }
    }
}

Answer 2

I also had the same problem and try to resolve the problem like @GrAnd's answer:

final Intent notificationIntent = new Intent(context,YourActivity.class);
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);

This works, no doubts about it but the problem is when you set your intent as ACTION_MAIN. Then you will not be able to set any bundle to the intent. I mean, your primitive data will not be received from the target activity because ACTION_MAIN can not contain any extra data.

Instead of this, you can just set your activities as singleTask and call your intent normally without setting ACTION_MAIN and receive the intent from onNewIntent() method of your target activity.

But beaware if you call, super.onNewIntent(intent); then a second instance of the activity will be created.