swift 音频被中断处理

NotificationCenter.default.addObserver(self, selector: #selector(audioStart(_:)), name:  NSNotification.Name.AVAudioSessionInterruption, object: nil)

public enum InterruptionType : UInt {
        case began = 1
        case ended = 0
    }

@objc private func audioStart(_ note: Notification){
        print("addInterruptionSession \(note) \(note.userInfo![AVAudioSessionInterruptionTypeKey])")
        if AVAudioSessionInterruptionType.began.rawValue == note.userInfo![AVAudioSessionInterruptionTypeKey] as? UInt{
            print("addInterruptionSession 收到音频中断开始通知")
            //暂停音频
        } else if AVAudioSessionInterruptionType.ended.rawValue == note.userInfo![AVAudioSessionInterruptionTypeKey]as? UInt{
            print("addInterruptionSession 收到音频中断结束通知")
            //恢复音频
        }
    }