当我使用FLAG_ACTIVITY_SINGLE_TOP-onDestroy（）使我的活动保持活跃

Question

When my service need to interact with the user it starts an activity:

Intent i = new Intent(context, Ringer_intent.class);
i.putExtra("PHONE_NUMBER", phone_number);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.setFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
// TODO: This prevents onDestroy --> why???
i.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

context.startActivity(i);

In order to make sure that Ringer_intent will not run twice I added

i.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

And I also added to my activity

@Override
public void onNewIntent (Intent intent) {
}

I want my Ringer_intent activity to go away when it finishes. I do not want the user to be able to bring it back to the fg.
That the way it work w/o FLAG_ACTIVITY_SINGLE_TOP
But with FLAG_ACTIVITY_SINGLE_TOP my activity remains in the bg ...
I added the following:

@Override
public void onStop() { Log.i(LOG_TAG, "Ringer_intent.onStop()"); // For Debugging
    super.onStop();
}

@Override
public void onDestroy() { Log.i(LOG_TAG, "Ringer_intent.onDestroy()"); // For Debugging
    super.onDestroy();
    Log.e(LOG_TAG, "Still not dead - kill it!");
    // Bad idea - it kills my service as well !!!
    // android.os.Process.killProcess(android.os.Process.myPid());
}

So I can see that Androids is calling both
But my activity is still there ...
Any idea?
Thanks

Note:
I tried to call finish() from onDestroy() - did not help

Answer 1

You cannot call Intent.setFlags() the way you are doing it. When you call setFlags() it overwrites the flags with the argument you pass to setFlags() . This means that after calling setFlags() three times, the only flag that will be set will be the one you specified in the last call to setFlags() . You can use addFlags() instead of setFlags() , or you can call setFlags() once and pass all of the flags as the argument, like this: setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS | Intent.FLAG_ACTIVITY_SINGLE_TOP)