iOS 中多音频处理

当我们自制作一个播放器的时候，会出现播放的 audio 被其他的比如系统来电或者是 App 内的其他 audio 打断的，这个时候，根据官方如下处理就行了

NotificationCenter.default.addObserver(self, selector: #selector(audioSessionInterruption(notification:)), name: Notification.Name.AVAudioSessionInterruption, object: nil) /// 音乐中断处理    @objc fileprivate func audioSessionInterruption(notification: NSNotification) {        guard let userInfo = notification.userInfo,            let typeValue = userInfo[AVAudioSessionInterruptionTypeKey] as? UInt,            let type = AVAudioSessionInterruptionType(rawValue: typeValue) else {                return        }        if type == .began {            // Interruption began, take appropriate actions            player.pause()        } else if type == .ended {            if let optionsValue = userInfo[AVAudioSessionInterruptionOptionKey] as? UInt {                let options = AVAudioSessionInterruptionOptions(rawValue: optionsValue)                if options.contains(.shouldResume) {                    // Interruption Ended - playback should resume                    logger.verbose("Interruption Ended - playback should resume")                    player.play()                } else {                    // Interruption Ended - playback should NOT resume                    player.pause()                }            }        }    }复制代码