Android获取音频焦点

/**
 * 夺取或释放音频焦点
 * @param audioManager
 * @param bMute
 */
private void muteAudioFocus(AudioManager audioManager, boolean bMute) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) {
        RLog.d("AudioRecordManager", "muteAudioFocus Android 2.1 and below can not stop music");
    } else {
        if (bMute) {
            audioManager.requestAudioFocus(this.mAfChangeListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
        } else {
            audioManager.abandonAudioFocus(this.mAfChangeListener);
            this.mAfChangeListener = null;
        }
    }
}

• AudioManager.AUDIOFOCUS_GAIN

获取后不release，需要手动release

• AudioManager.AUDIOFOCUS_GAIN_TRANSIENT

临时获取，使用后release