android 音频抢占问题

阿道夫小狮子2025-12-19 8:21

复制代码

private val mAudioManager: AudioManager by lazy {
    Utils.getApp().getSystemService(Context.AUDIO_SERVICE) as AudioManager
}

复制代码

fun checkSpeakerOn():Boolean {

    val afChangeListener = AudioManager.OnAudioFocusChangeListener { focusChange ->
            if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT ||
                focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK
            ) {
                // 音频焦点暂时丢失，可能是因为多媒体占用
                LogUtils.d(TAG, "Temporarily lost audio focus due to media play")
            } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS) {
                // 永久失去音频焦点，可能是因为多媒体或其他应用正在播放
                LogUtils.d(TAG, "Permanently lost audio focus")
            } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
                // 重新获得音频焦点
                LogUtils.d(TAG, "Gained audio focus")
            } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK) {
                // 暂时失去焦点，但允许降低音量而不是停止播放
                LogUtils.d(TAG, "Temporarily lost audio focus, can duck")
            }
        }

    val result: Int = mAudioManager.requestAudioFocus(
        afChangeListener,
        AudioManager.STREAM_MUSIC,
        AudioManager.AUDIOFOCUS_GAIN
    )
    return if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
        // 成功获取到音频焦点
        true
    }else
        false
}