Mediaplayer继续播放

问题描述

我有一个媒体播放器，如果有媒体播放器在播放，我希望它停止播放，然后新的媒体播放器开始播放，则每次调用此活动...这是我的音频播放器方法

I have a media player and everytime that this activity is called if there is a media player playing i want it to stop and the new media player start playing ... This is my audio player method

private void playAudio(String url) throws Exception{

mediaplayer.release();
mediaplayer.setDataSource(url);
mediaplayer.prepare();
mediaplayer.start();

}

我在课程开始时初始化媒体播放器

I initialize the media player at the beginning of the class

private MediaPlayer mediaplayer = new MediaPlayer();
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {

    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.songplaying);

    // Getting Our Extras From Intent
     Bundle names = getIntent().getExtras();

    // Getting Specific Data

     path = names.getString("pathkeyword");


     //Start Player
     try {
        playAudio(path);

    } catch (Exception e) {
       e.printStackTrace();

}

每次创建此类时，它都会创建一个新的媒体播放器，不会停止另一个播放器，而只是同时播放两个播放器.

Everytime this is class is created it creates a new media player doesn't stop the other one and just plays both at the same time.

推荐答案

您可能希望调查onPause并杀死媒体播放器.问题是，一旦第二次就没有对媒体播放器的引用.结果，您开始了活动，播放了音乐，但是当您退出(例如，按HOME按钮)时，媒体播放器没有被告知要停止(它作为一个单独的线程运行).重新打开它时，它将在新线程上启动新的媒体播放器，并产生两种声音.

You may wish to look into onPause and kill the media player then. The problem is that there is no reference to the media player once it has been made a 2nd time. As a result, you start up your activity, play the music, but when you exit (e.g. press the HOME button) the media player has not been told to stop (it runs as a separate thread). When you reopen it, it will start a new media player on a new thread, producing two sounds.

要解决此问题，请在退出时正确杀死媒体播放器.当您退出活动时，这将正确杀死媒体播放器:

To fix this, kill the media player properly when you exit. This will properly kill the media player when you quit the activity:

@Override
protected void onPause(){
    super.onPause();
    if(mediaplayer.isPlaying()){
        try{
            mediaplayer.stop();
        }
        catch(IllegalStateException){
            Log.d("mediaplayer","Media player was stopped in an illegal state.");
        }
    }
}

如果您希望在活动不在前台时继续播放音乐，则需要使用Service.

If you wish to continue the music whilst the activity is not in the foreground, you need to use a Service.

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