1）在Android项目中，我写了播放音乐的后台服务。问题是，当我的应用程序正在播放音乐的背景和其他应用程序（音乐播放器）播放音乐，无论是音频同时播放。我想停止播放音乐在我的应用程序，如果有其他的应用程序播放音乐。我该如何处理这个？

1) In an android project, I have written a service that plays music at the background. The problem is when my application is playing music at the background and another application(music player) plays music, both the audios play simultaneously. I want to stop playing the music in my application, if any other app plays the music. How do I deal with this.?

推荐答案

这个概念被称为音频焦点在Android中。

This concept is called audio focus in Android.

在广义上讲，这意味着只有一个应用程序可以在一个时间点有音频焦点，如果一个电话呼叫时，或其他应用程序要播放音乐，你应该放弃，如果它要求（例如，及放; C）

In broad terms, it means that only one app can have audio focus at one point in time, and that you should relinquish if it asked to (for example if a phone call arrives, or another app wants to play music, &c).

要做到这一点，你需要注册一个 OnAudioFocusChangeListener 。

To do this, you need to register an OnAudioFocusChangeListener.

基本上，你必须：

请检查href="http://developer.android.com/training/managing-audio/audio-focus.html" rel="nofollow">音频管理重点文章在Android的