Question

如何使用OnCompletion侦听器播放某些音乐？我想按一个按钮转到另一个播放音乐的活动，然后在音乐播放结束时返回。我已经编写了其他的东西。我只是想弄清楚如何使用OnCompletion监听器？

Answer 1

您应该在OnCompletionListener完成音乐播放时应该运行的代码，例如：

mPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
    public void onCompletion(MediaPlayer mp) {
        finish(); // finish current activity
    }
});

Answer 2

mPlayer.setOnErrorListener(new OnErrorListener() {
public boolean onError(MediaPlayer paramMediaPlayer, int paramInt1,int paramInt2) {
// TODO Auto-generated method stub
//your code if any error occurs while playing even you can show an alert to user
return true;
}
});
mPlayer.setOnCompletionListener(new OnCompletionListener() {
public void onCompletion(MediaPlayer mp) {
// TODO Auto-generated method stub
//your code if the file was completely played either show an alert to user or start another activity or file.
//even you can finish you activity here
}                   
});

Answer 3

我发现上面的内容是正确的但是我在努力放置代码的位置。请参阅下文，我将此代码放在我的代码之后开始调整！

playButton.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
    mediaPlayer.start();       //Next line is the beginning of where to place the code.
    mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
      @Override
      public void onCompletion(MediaPlayer mediaPlayer) {
      Toast.makeText(MainActivity.this, "I'm Finished", Toast.LENGTH_SHORT).show();
      }
    });
  }
});

Answer 4

这是 kotlin 版本的 setOnCompletionListener :

mediaPlayer.setOnCompletionListener(MediaPlayer.OnCompletionListener { it // this is MediaPlayer type
                Log.d(TAG,"setOnCompletionListener OnCompletionListener called")
                // do other task
            })

使用MediaPlayer的OnCompletion侦听器

4 个答案: