Question

嘿，伙计们在Android中使用MediaPlayer类时遇到了一个问题

在你建议SoundPool之前，我需要一个OnCompletion事件，当声音片段完成播放时触发，否则我会使用它。

所以问题是，当同时激活3个或更多个剪辑时，我只获得最后2个事件的OnCompletion，而不是所有这些事件，任何人都知道这个问题的解决方案或者知道它为什么会发生？

// When the user clicks on the Chicken Image, this Function is called
public void onChickenClicked(View view)
{
//  ToastMsg( "You Clicked the Chicken", Toast.LENGTH_SHORT );
    // Then play the sound,
    mMediaPlayer[CHICKEN] = MediaPlayer.create(MainActivity.this, R.raw.chicken_sound );
    // Start playing the sound
    mMediaPlayer[CHICKEN].start();
    // This is to catch when the sound clip has ended, this will be 
    //     used to stop the animation for the chicken
    mMediaPlayer[CHICKEN].setOnCompletionListener( new OnCompletionListener() {
        public void onCompletion(MediaPlayer mp) {
            System.err.println("Chicken On Complete");
            // Stop the animation of the Chicken here
            mAnimation.cancel();
            mAnimation.reset();
            // Then switch the image back to the original Chicken pic
            ImageView imgView = (ImageView) findViewById(R.id.imageViewofChicken);
            imgView.setImageResource(R.drawable.chicken);
            mMediaPlayer[CHICKEN].reset();
        }} );

    // Finds the ImageView, replaces the base img with the alternate img, and plays the sound
    animatePicture( R.id.imageViewofChicken, R.drawable.chicken_tongue);
}   




public void onCowClicked(View view)
{
//  ToastMsg( "You Clicked the Cow", Toast.LENGTH_SHORT );
    // Then play the sound, 
    mMediaPlayer[COW] = MediaPlayer.create(MainActivity.this, R.raw.cow_sound );
    // Start playing the sound
    mMediaPlayer[COW].start();
    // This is to catch when the sound clip has ended, this will be 
    //     used to stop the animation for the chicken
    mMediaPlayer[COW].setOnCompletionListener( new OnCompletionListener() {
        public void onCompletion(MediaPlayer mp) {
            System.err.println("Cow On Complete");
            // Stop the animation of the Chicken here
            mAnimation.cancel();
            mAnimation.reset();
            // Then switch the image back to the original Chicken pic
            ImageView imgView = (ImageView) findViewById(R.id.imageViewofCow);
            imgView.setImageResource(R.drawable.cow);
            mMediaPlayer[COW].reset();
        }} );
    // Finds the ImageView, replaces the base img with the alternate img, and plays the sound
    animatePicture( R.id.imageViewofCow, R.drawable.cow_tongue);
}

//there are more but you get it idea here.

任何人都对如何让所有OnCompleteListeners开火都有任何想法？

Answer 1

所以我想通了，我只是用SoundPool替换了MediaPlayer，然后用了

private final ScheduledExecutorService mScheduler = Executors.newScheduledThreadPool(MAX_ANIMALS);

根据我在stackoverflow上使用MediaPlayer加载声音时看到的函数来处理声音剪辑的时间，然后以毫秒为单位获取持续时间，并将其用作调度程序的延迟（{{1} }）。

这是一个黑客，但它完成了。

Android - 从MediaPlayer同时获取2个以上的OnCompleteListener事件

1 个答案: