android播放音乐示例(3)

    private ImageButton mNextImageButton    = null;   
   
    /* MediaPlayer对象 */   
    public MediaPlayer  mMediaPlayer        = null;   
       
    /* 播放列表 */   
    private List<String> mMusicList = new ArrayList<String>();   
       
    /* 当前播放歌曲的索引 */   
    private int currentListItme = 0;   
       
    /* 音乐的路径 */   
    private static final String MUSIC_PATH = new String("/sdcard/");   
   
    /** Called when the activity is first created. */   
    @Override   
    public void onCreate(Bundle savedInstanceState)   
    {   
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.main);   
        /* 更新显示播放列表 */   
        musicList();   
        /* 构建MediaPlayer对象 */   
        mMediaPlayer        = new MediaPlayer();   
   
        mFrontImageButton = (ImageButton) findViewById(R.id.LastImageButton);    
        mStopImageButton = (ImageButton) findViewById(R.id.StopImageButton);   
        mStartImageButton = (ImageButton) findViewById(R.id.StartImageButton);    
        mPauseImageButton = (ImageButton) findViewById(R.id.PauseImageButton);   
        mNextImageButton = (ImageButton) findViewById(R.id.NextImageButton);    
           
        //停止按钮   
        mStopImageButton.setOnClickListener(new ImageButton.OnClickListener()    
        {   
            @Override