Android app shutdown dialog not prevented on some devices -

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i using following code prevent shutdown dialog shown on screen. however, did not work devices. works on samsung galaxy s4 mini not on htc. wrong code?

@override  public void onwindowfocuschanged(boolean hasfocus) {     super.onwindowfocuschanged(hasfocus);          log.d("focus debug", "focus changed !");      if(!hasfocus) {         log.d("focus debug", "lost focus !");          intent closedialog = new intent(intent.action_close_system_dialogs);         sendbroadcast(closedialog);     }  }

what wrong code?

nothing. samsung galaxy s4 mini apparently has bug, broadcast affects shutdown dialog. shutdown dialog not a temporary system dialog , therefore should not affected broadcast.


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