Search code examples
androidlistviewandroid-fragmentsgreenrobot-eventbus

Send Uri of item in ListView to Fragment using EventBus onClick


Is there a way to register an onClick event for a listView item without sending an intent through startActivity, but instead just send and event using EventBus.

@Override
    public void onClickListener(AdapterView<?> av,View v, int position, long id){
        cursor.moveToPosition(position);
        String st = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA));
        Uri uri = Uri.parse(cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA)));
        Log.d("item slected",st);
        MusicPlayerEvent playerevent = new MusicPlayerEvent(uri);
        EventBus.getDefault().post(playerevent);
    }

Fragment:

public class MusicPlayer extends Fragment {
    MediaPlayer mp;
    public MusicPlayer() {
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EventBus.getDefault().register(this);
        mp = new MediaPlayer();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_music_player, container, false);
    }

    // TODO: Rename method, update argument and hook method into UI event
    public void onButtonPressed(Uri uri) {
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
    }

    @Override
    public void onDetach() {
        EventBus.getDefault().unregister(this);
        super.onDetach();
    }
    public interface OnFragmentInteractionListener {
        public void onFragmentInteraction(Uri uri);
    }
    public void onEvent(MusicPlayerEvent playerevent){
        try {
            mp.setDataSource(this.getActivity(), playerevent.uri);
            mp.prepare();
        } catch (IOException e) {
            e.printStackTrace();
        }
        mp.start();
    }

}

event class:

public class MusicPlayerEvent {
    Uri uri;
    MusicPlayerEvent(Uri uri){
        this.uri = uri;
    }
}

Many issues here i'm sure but i'd like to at least get an idea of whether what i'm trying to do is possible and perhaps a pointer to some relevant examples or reading. It might be the case that i should get more familiar with regular intents before i try to work with EventBus, but if i can learn the more flexible option first that would be nice.


Solution

  • I should have posted the rest of my activity. I think this would have been easier to answer if i had. I will not make that mistake in the future. I am using a list activity.. as such the proper method to us is onListItemClick.

    @Override
        public void onListItemClick(ListView parent,View v, int position, long id){
            cursor.moveToPosition(position);
            String st = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA));
            Uri uri = Uri.parse(cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA)));
            Log.d("item slected",st);
            MusicPlayerEvent playerevent = new MusicPlayerEvent(uri);
            EventBus.getDefault().post(playerevent);
        }