问在iOS上录制音频而不停止音乐回放

EN

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord
withOptions:AVAudioSessionCategoryOptionMixWithOthers error:nil];

let audioSession = AVAudioSession.sharedInstance()
        do {
            try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord,
                                         with: AVAudioSessionCategoryOptions.mixWithOthers)
        } catch let error as NSError {
            print("audioSession error: \(error.localizedDescription)")
        }