停止的MediaPlayer当其他应用程序播放音乐 [英] Stop MediaPlayer when an other app play music

问题描述

在我的应用程序，我有一个媒体播放器，播放流音乐：

In my app, I have a media player which play a stream music:

globalVariable.setPlaying(true);
final ProgressDialog mProgressDialog;
mProgressDialog = ProgressDialog.show(MainActivity.this, "Chargement en cours", "La musique est en train de charger", true);

String url = "http://178.32.181.86:18000";
globalVariable.mp.setAudioStreamType(AudioManager.STREAM_MUSIC);

try {
    globalVariable.mp.setDataSource(url);
} catch (IOException e) {
    e.printStackTrace();
}

globalVariable.mp.prepareAsync();

globalVariable.mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
    @Override
    public void onPrepared(MediaPlayer mp) {
           mp.start();
           bouton.setImageResource(R.drawable.pause);
           mProgressDialog.hide();
    }
});

它工作得很好。当我在我面前打开另一个应用程序，玩家继续，它的伟大。但是，如果我发动另一名球员（如GooglePlayMusic或YouTube），我的应用程序不会停止音乐，我有两个声音在同一时间。

It works very fine. When I open another app in front of mine, player continues, and it's great. But if I launch another player (like GooglePlayMusic or youtube), my app doesn't stop music and I have two sounds in the same time.

所以，我想，如果另一个应用程序需要播放的音乐我的音乐停下来。

So I want that my music stop if another app need to play music.

非常感谢

推荐答案

您应该使用AudioManager服务是否接收到接收通知/音频丢失焦点（的管理音频焦点）。我在一个项目中，当我的应用程序开始播放，谷歌播放暂停，反之亦然做过类似的事情。使用以下code你在哪里控制你的媒体播放像（活动或服务） -

You should use AudioManager service to receive notification whether you receive/lost audio focus (Managing audio focus). I've done similar thing in a project where when my app starts playing, Google Play pause and vice versa. Use the following code where you are controlling your media playback like (activity or service)-

// Add this code in a method

AudioManager am = null;

// Request focus for music stream and pass AudioManager.OnAudioFocusChangeListener
// implementation reference
int result = am.requestAudioFocus(this, AudioManager.STREAM_MUSIC, 
                AudioManager.AUDIOFOCUS_GAIN);

if(result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED)
{
    // Play
}

// Implements AudioManager.OnAudioFocusChangeListener

@Override
public void onAudioFocusChange(int focusChange) 
{
    if(focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT)
    {
        // Pause
    }
    else if(focusChange == AudioManager.AUDIOFOCUS_GAIN)
    {
        // Resume
    }
    else if(focusChange == AudioManager.AUDIOFOCUS_LOSS)
    {
        // Stop or pause depending on your need
    }
}

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