Control audio playback from interaction on the home screen widget (android)

Question

I am not able to control audio playback(play/pause/seek_next/seek_prev) from the buttons on the home_screen widget in flutter (android).

not being able to control playback from buttons on Home_widget means that the callback that I am registering in the main method by using: HomeWidget.registerBackgroundCallback(homeScreenWidgetCallback); has these lines of code

dynamic homeScreenWidgetCallback(Uri? uri) async {
  print(uri?.host);
  if(uri?.host == 'seek_prev'){
    if((player.position.inMilliseconds ?? 0) >= 2100 || player.currentIndex == 0){
      player.seek(Duration(seconds: 0));
    }else{
      player.seekToPrevious();
      player.play();
    }
  }else if (uri?.host == 'play_pause') {
  if(!player.playing){
    player.play();
  }else{
    player.pause();
  }
  }else{
    if(player.nextIndex  != null){
      player.seekToNext();
      player.play();
    }else{
      player.pause();
      player.seek(Duration.zero, index: player.currentIndex);
    }
  }

  await HomeWidget.updateWidget(name: 'AppWidgetProvider', iOSName: 'AppWidgetProvider');
}

but the player method Im using don't actually stop the music or change its state though they do one thing on click that is:

if some other application is playing audio and I press any of these audio control buttons on my home widget the music stops from the other app.

Player is a AudioPlayer from the library "just_audio" HomeWidget comes from the library "home_widget"

Im also using the library "just_audio_background" for media control from notification

I think I might be missing some service element or receiver element in the android manifest but I tried a lot of stuff and nothing really worked out. Any help is greatly appreciated