Android：如何监听 MediaPlayer 事件，例如音乐播放/停止？
是否存在广播接收器操作来监听媒体播放器事件，例如检测音乐开始播放/停止或检测媒体播放器的播放/停止按钮的点击？
更一般地说，我想检测音频流何时开始/结束。
谢谢
Does it exists a broadcast receiver action in order to listen a Media Player event such as the detection of the music starting to play/stop or the detection of the hit of Play/Stop Button of the MediaPlayer ?
More generally I'd like to detect when the audio stream is starting/ending.
Thanks
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您可以尝试
requestAudioFocus()在您想要收听的流上注册音频焦点侦听器。您实际上不需要播放此流。当您收到
AUDIOFOCUS_LOSS时，这意味着另一个“音频流正在启动”。当您收到
AUDIOFOCUS_GAIN时，这意味着另一个“音频流正在结束”。如果您对音乐流感兴趣，
isMusicActive()也可能对您有所帮助。You can try
requestAudioFocus()to register an audio focus listener on a stream which you want to listen on. You don't need to play this stream actually.When you get
AUDIOFOCUS_LOSS, it means another "audio stream is starting".When you get
AUDIOFOCUS_GAIN, it means another "audio stream is ending".If you are interested in music stream,
isMusicActive()may also help you.