獲取手機的音訊檔案展示在ListView 點選一個播放一個

/**
 * 獲取手機上的所有音樂點選開始播放
 */
public class MainActivity extends AppCompatActivity {
    private ListView listView;
    // 獲取外部儲存的 音訊檔案 也可以 修改為 視訊 Vedio 或內部儲存
    private Uri mediaUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
    private SimpleCursorAdapter adapter;
    private MediaPlayer mPlayer;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = (ListView) findViewById(R.id.lv);
//        mPlayer = new MediaPlayer();
        ContentResolver resolver = getContentResolver();
        Cursor cursor = resolver.query(mediaUri,
                new String[] { MediaStore.Video.Media._ID, MediaStore.Video.Media.DISPLAY_NAME, MediaStore.Video.Media.DATA, MediaStore.Video.Media.TITLE }, null, null, null);

        adapter = new SimpleCursorAdapter(MainActivity.this, R.layout.item_layout, cursor,
                new String[] { MediaStore.Video.Media.DISPLAY_NAME, MediaStore.Video.Media.DATA, MediaStore.Video.Media.TITLE },
                new int[] { R.id.diaplayname_tv, R.id.data_tv, R.id.title_tv },
                CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);

        listView.setAdapter(adapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // TODO Auto-generated method stub
                Cursor c = (Cursor) adapter.getItem(position);
                String path = c.getString(c.getColumnIndex(MediaStore.Video.Media.DATA));

                // 系統播放音訊檔案
//                Intent intent = new Intent();
//                intent.setAction(Intent.ACTION_VIEW);
//                intent.setDataAndType(Uri.fromFile(new File(path)), "audio/*");
//                startActivity(intent);
                if(mPlayer!=null){
                     mPlayer.release();//釋放資源
                }
                mPlayer = MediaPlayer.create(MainActivity.this,Uri.parse(path));
                mPlayer.start();
            }
        });

    }

}