使用soundpool在两个按钮触摸上一起播放两个声音

Question

当两个按钮同时触摸时，我试图一起播放两个声音。我有button1和button2，而button1是触摸，button2不会播放声音。但当我把手指从按钮1上移开然后触摸按钮2播放声音。

我试过谷歌搜索，但无法找到答案。 我想做的很清楚。当两个按钮碰在一起时，一起播放两个声音。

到目前为止，我的代码如下。

--dry-run

}

public class MultitouchtestActivity extends MultiTouchActivity {
/** Called when the activity is first created. */

private Button btn1;
private Button btn2;

SoundPool soundPool;
AudioManager audioManager;
int soundId;
int kID, sID;

@Override
public void onCreate(Bundle savedInstanceState)
{

    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    this.getWindow().clearFlags(
    WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);

    super.onCreate(savedInstanceState);

    audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);

    setContentView(R.layout.main);
    btn1 = (Button) findViewById(R.id.button1);
    btn2 = (Button) findViewById(R.id.button2);

    //the maximum number of simultaneous streams for this SoundPool object
    int maxStreams = 4;
    //the audio stream type as described in AudioManager
    int streamType = AudioManager.STREAM_MUSIC;
    //the sample-rate converter quality. Currently has no effect. Use 0 for the default.
    int srcQuality = 0;

    soundPool = new SoundPool(maxStreams, streamType, srcQuality);
    soundPool.setOnLoadCompleteListener(soundPoolOnLoadCompleteListener);
    soundId = soundPool.load(this, R.raw.c, 1);
    kID = soundPool.load(this, R.raw.k, 1);
    sID = soundPool.load(this, R.raw.s, 1);

    btn1.setOnTouchListener(new View.OnTouchListener()
    {

        public boolean onTouch(View v, MotionEvent event)
        {
            if(event.getAction() == MotionEvent.ACTION_DOWN)
            {
                float vol = audioManager.getStreamVolume(
                        AudioManager.STREAM_MUSIC);
                float maxVol = audioManager.getStreamMaxVolume(
                        AudioManager.STREAM_MUSIC);
                float leftVolume = vol/maxVol;
                float rightVolume = vol/maxVol;
                int priority = 1;
                int no_loop = 0;
                float normal_playback_rate = 1f;
                soundPool.play(kID,
                        leftVolume,
                        rightVolume,
                        priority,
                        no_loop,
                        normal_playback_rate);
                return true;
            }
            return false;
        }
    });
    btn2.setOnTouchListener(new View.OnTouchListener()
    {

        public boolean onTouch(View v, MotionEvent event)
        {
            if(event.getAction() == MotionEvent.ACTION_DOWN)
            {
                float vol = audioManager.getStreamVolume(
                        AudioManager.STREAM_MUSIC);
                float maxVol = audioManager.getStreamMaxVolume(
                        AudioManager.STREAM_MUSIC);
                float leftVolume = vol/maxVol;
                float rightVolume = vol/maxVol;
                int priority = 1;
                int no_loop = 0;
                float normal_playback_rate = 1f;
                soundPool.play(sID,
                        leftVolume,
                        rightVolume,
                        priority,
                        no_loop,
                        normal_playback_rate);
                return true;
            }
            return false;
        }
    });
}
SoundPool.OnLoadCompleteListener soundPoolOnLoadCompleteListener =  new SoundPool.OnLoadCompleteListener()
{
    @Override
    public void onLoadComplete(SoundPool soundPool, int sampleId, int status)
    {
        if(status==0)
        {
            btn1.setEnabled(true);
            btn2.setEnabled(true);
        }
        else
        {
            Toast.makeText(MultitouchtestActivity.this,"SoundPool.load() fail", Toast.LENGTH_LONG).show();
        }
    }
};

}