以编程方式从最近的应用程序中删除应用程序

Question

I know that Activities can be declared in manifest as being excluded from recents with android:excludeFromRecents : http://developer.android.com/guide/topics/manifest/activity-element.html#exclude

However, that's not what I'm looking for, I would like to know if there is a way to remove the app from recent apps programmatically

Answer 1

Yes, generally when you want to have special properties for an Activity when starting it you supply special flags to the Intent . In this case FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS .

Updated:

If you need to hide the current already running activity, you might be able to use this flag in combination with FLAG_ACTIVITY_CLEAR_TOP which would send the new Intent to the existing Activity . You'll have to think and perhaps experiment with what happens as the user moves around your stack though and whether that will make your app re-appear in the recent apps.

Answer 2

I did it in easiest way:

Add New Activity :

public class ExitActivity extends Activity
{
    @Override protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        if(android.os.Build.VERSION.SDK_INT >= 21)
        {
            finishAndRemoveTask();
        }
        else
        {
            finish();
        }
    }

    public static void exitApplicationAndRemoveFromRecent(Context context)
    {
        Intent intent = new Intent(context, ExitActivity.class);

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK  | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS | Intent.FLAG_ACTIVITY_NO_ANIMATION);

        context.startActivity(intent);
    }
}

Now exit from other Activity :

@Override
public void onBackPressed() {
 ExitActivity.exitApplicationAndRemoveFromRecent(OtherActivity.this);
 super.onBackPressed();
}

Done .

Answer 3

This can be done using the ActivityManager.AppTask functionality (starting in API 21)

    ActivityManager am = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
    if(am != null) {
        List<ActivityManager.AppTask> tasks = am.getAppTasks();
        if (tasks != null && tasks.size() > 0) {
            tasks.get(0).setExcludeFromRecents(true);
        }
    }

Answer 4

Following is the definition of the flag android:excludeFromRecents (which i know you have already seen):

Whether or not the task initiated by this activity should be excluded from the list of recently used applications ("recent apps"). That is, when this activity is the root activity of a new task, this attribute determines whether the task should not appear in the list of recent apps. "true" if the task should be excluded from the list; "false" if it should be included. The default value is "false".

so to remove the app from the list of recent app you can set this flag on the first activity in your application since that activity launches the the task for you application. If you have multiple tasks (unlikely for most apps) in your application then you need o set this flag for root activity of all the task.

Answer 5

Add these lines to the Activity from which you are exiting the application:

@Override
public void finish() {
    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        super.finishAndRemoveTask();
    }
    else {
        super.finish();
    }
}

Answer 6

在您的活动完成后调用此应该关闭，并且应该完成任务作为完成任务的根活动的一部分。

finishAndRemoveTask();

Answer 7

After receiving the other answers, I managed to get to the following workaround: I have an Activity , let's call it XPTO, declared in manifest with

and basically, when I want app to disappear from the recents list, I finish all other activities, then start the XPTO, which basically kills the app (calling android.os.Process.killProcess(android.os.Process.myPid()); in its onResume()

If anyone has a better way of doing this, please share it