关于visualizer的setEnabled()方法何时进行设置成false？

 

/**
     * 频谱的实现
     */
    private static final String TAG = "AudioFxActivity_1";
    private static final float VISUALIZER_HEIGHT_DIP = 160f;
    public static Visualizer mVisualizer;
    private LinearLayout mLinearLayout;
    private VisualizerView mVisualizerView;
    private MediaPlayer mp;// MediaPlayer对象

    private boolean isNext;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.playingmusic);
        Intent intent = this.getIntent();// 获取列表的Intent对象
        Bundle bundle = intent.getExtras();// Bundle存取数据，那么在播放界面提取数据喽
        _ids = bundle.getIntArray("_ids");// 歌名数组的ID，用来临时保存音乐的ID
        position = bundle.getInt("position");// 音乐播放位置
        _titles = bundle.getStringArray("_titles");// 音乐播放标题
        _artists = bundle.getStringArray("_artists");// 传过来的艺术家，歌名一个都不允许遗漏，否则空指针是必须的
        name = (TextView) findViewById(R.id.musicname);// 歌名
        // artist = (TextView) findViewById(R.id.singer);// 歌手，即艺术家
        lrcText = (TextView) findViewById(R.id.musiclrc);
        // playtime = (TextView) findViewById(R.id.playtime);// 左边正在播放时间
        // durationTime = (TextView) findViewById(R.id.duration);// 总时间，要转换的
        // albumpic = (ImageView) findViewById(R.id.albumPic);//专辑

        gesLib = GestureLibraries.fromRawResource(this, R.raw.gestures);
        gesLib.load();
        gestureoverlay1 = (GestureOverlayView) this.findViewById(R.id.gestures1);
        MyOnGesturePerformedListener gpl = new MyOnGesturePerformedListener();
        gestureoverlay1.addOnGesturePerformedListener(gpl);

        // 频谱功能初始化
        mLinearLayout = (LinearLayout) findViewById(R.id.layout_audiofx);
        //Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, ""+_ids[position]);
        //mp = MediaPlayer.create(this, R.raw.ki);


    }

    private void setupVisualizerFxAndUI(int audioID)
    {
        mVisualizerView = new VisualizerView(this);
        mVisualizerView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, (int) (VISUALIZER_HEIGHT_DIP * getResources().getDisplayMetrics().density)));

        mLinearLayout.addView(mVisualizerView);


        final int maxCR = Visualizer.getMaxCaptureRate();


        mVisualizer = new Visualizer(audioID);

        mVisualizer.setCaptureSize(Visualizer.getCaptureSizeRange()[1]);
        mVisualizer.setDataCaptureListener(new Visualizer.OnDataCaptureListener()
        {
            public void onWaveFormDataCapture(Visualizer visualizer, byte[] bytes, int samplingRate)
            {
                mVisualizerView.updateVisualizer(bytes);
            }

            public void onFftDataCapture(Visualizer visualizer, byte[] fft, int samplingRate)
            {
                mVisualizerView.updateVisualizer(fft);
            }
        }, maxCR / 2, false, true);
        mVisualizer.setEnabled(true);




    }

 01-09 15:17:38.911: E/AndroidRuntime(933): Caused by: java.lang.IllegalStateException: setCaptureSize() called in wrong state: 2
01-09 15:17:38.911: E/AndroidRuntime(933):  at android.media.audiofx.Visualizer.setCaptureSize(Visualizer.java:279)
一直出现这个错误，不知道是在这个activity的哪个地方添加mvisualizer.setEnabled(false)

 

 

求大神指点！