Question

我正在制作一个使用声音效果的应用。我想知道我是如何检测声音何时播放并触发事件的。

我试过这个：

 player = new MediaPlayer();
    if (player != null) {
        player.reset();
        player.release();
    }

    player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mediaPlayer) {

            sonar.setBackgroundResource(R.drawable.sonar_off);
            stopPlay();
        }
    });

        if(state==1){
            player = MediaPlayer.create(this, R.raw.sonar_slow);
        }else if(state==2){
            player = MediaPlayer.create(this, R.raw.sonar_medium);
        }else if(state==3){
            player = MediaPlayer.create(this, R.raw.sonar_fast);
        }
         try{
             player.prepare();
            } catch (IllegalStateException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
            } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
            } 
        player.start();

Answer 1

您可以将OnCompleteListener（）设置为播放器对象。它的代码是：

mPlayer.setOnCompletionListener(new OnCompletionListener() {
     @Override
     public void onCompletion(MediaPlayer mp) 
             { 
                "your code comes here" 
             }
});

此处mPlayer是当前正在运行的MediaPlayer的对象。

Answer 2

有多种方式播放声音，假设您使用MediaPlayer类，则可以注册MediaPlayer.OnCompletionListener

当mediaPlayer停止时触发事件

2 个答案: