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有没有办法在不通过 startActivity 发送意图的情况下为 listView 项注册 onClick 事件,而只需使用 EventBus 发送和事件。

@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);
    }

分段:

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();
    }

}

事件类:

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

我敢肯定这里有很多问题,但我想至少了解我正在尝试做的事情是否可行,也许是指向一些相关示例或阅读的指针。在尝试使用 EventBus 之前,我可能应该更熟悉常规意图,但如果我可以先学习更灵活的选项,那就太好了。

4

1 回答 1

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我应该发布我的其余活动。如果我有,我想这会更容易回答。我以后不会犯这样的错误。我正在使用列表活动..因此对我们来说正确的方法是 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);
    }
于 2014-11-08T12:59:59.100 回答