Unable to add window — token null is not valid; is your activity running?

Question

i want to show a custom popup menu when user click on a floating icon

the float icon create with an service and i have no activity

this is my floating icon c

Answer 1

You should not put the windowManager.addView in onCreate

Try to call the windowManager.addView after onWindowFocusChanged and the status of hasFoucus is true.

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    //code here
    //that you can add a flag that you can call windowManager.addView now.
}