Question

由于这个问题AUDIOFOCUS_GAIN doesn't called after AUDIOFOCUS_LOSS_TRANSIENT after a phone call

，我有点困惑

我不相信＆＃34;忙碌的等待＆＃34;解。我认为AudioManager将状态更改为AUDIOFOCUS_GAIN

此问题支持我的观点AUDIOFOCUS_LOSS called after a phone call in android

但是当我尝试时，永远不会出现AUDIOFOCUS_GAIN

的情况

   AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

发送的请求

am.requestAudioFocus(af, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);

和

 OnAudioFocusChangeListener af = this;

和

public void onAudioFocusChange(int i) {
    Log.d("AudioChanged", i + "");
    if (i == AudioManager.AUDIOFOCUS_LOSS) {
        am.abandonAudioFocus(this);
        sendBroadcast(new Intent(Constants.ACTION.PLAY_ACTION));
    }  else if (i == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) {
        am.abandonAudioFocus(this);
        sendBroadcast(new Intent(Constants.ACTION.PLAY_ACTION));
        Log.d("loss transient", "AUDIOFOCUS_LOSS_TRANSIENT");

    } else if (i == AudioManager.AUDIOFOCUS_GAIN) {
        Log.d("gain ", "AUDIOFOCUS_GAIN");
        startPlaying();
    }
}

Answer 1

abandonAudioFocus()当AudioManager.AUDIOFOCUS_LOSS_TRANSIENT或AudioManager.AUDIOFOCUS_LOSS时，它不应该自动发生（音频焦点传递给请求音频焦点的新应用程序，你只需得到回调并且你没有放弃音频焦点请求，因为在你打电话的情况下你想再次播放你的音乐，你应该做的是AudioManager.AUDIOFOCUS_LOSS，停止你的MediaPlayer这就是AudioManager.AUDIOFOCUS_LOSS_TRANSIENT暂停MediaPlayer的所有情况，当电话结束时，您会自动拨打AudioManager.AUDIOFOCUS_GAIN，然后再次播放MediaPlayer 1}}。

当电话结束时，onAudioFocusChange会发生什么

1 个答案: