OS状态错误2003334207-“操作无法完成”

Question

我正在编写一个应用程序，让乐队学生录制他们的练习课程并能够回放。我不是最有经验的开发人员，但正在努力实现目标。选择单元格后尝试播放我录制的内容时，出现此错误操作无法完成。 （OSStatus 错误 2003334207。）在控制台中。预先感谢您的帮助！这是我的代码：

我只是需要帮助来弄清楚为什么我会收到这个错误。

导入AVFoundation 导入 UIKit

ViewController 类：UIViewController、AVAudioRecorderDelegate、UITableViewDelegate、UITableViewDataSource {

var recordingSession: AVAudioSession!
var audioRecorder: AVAudioRecorder!
var audioPlayer: AVAudioPlayer!

var numberOfRecorders: Int = 0


@IBOutlet weak var myTableView: UITableView!

@IBOutlet weak var startRecordingButton: UIButton!

@IBAction func startRecording(_ sender: UIButton) {
    //Check if we have an active recorder
    if audioRecorder == nil  {
        numberOfRecorders += 1
        let fileName = getDirectory().appendingPathComponent("\(numberOfRecorders).m4a")
        
        let settings = [AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
                        AVSampleRateKey: 1200,
                        AVNumberOfChannelsKey: 1,
                        AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue]
        
        //Start Recording
        do {
            audioRecorder = try AVAudioRecorder(url: fileName, settings: settings)
            audioRecorder.delegate = self
            audioRecorder.record()
            
            startRecordingButton.setTitle("Stop Recording", for: .normal)
        } catch {
            displayAlert(title: "Oop", message: "Recording Failed")
        }
    } else {
        //Stopping audio recording
        audioRecorder.stop()
        audioRecorder = nil
        
        UserDefaults.standard.set(numberOfRecorders, forKey: "myNumber")
        myTableView.reloadData()
        
        startRecordingButton.setTitle("Start Recording", for: .normal)
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    recordingSession = AVAudioSession.sharedInstance()
    
    if let number: Int = UserDefaults.standard.object(forKey: "myNumber") as? Int {
        numberOfRecorders = number
    }
    
    AVAudioSession.sharedInstance().requestRecordPermission() {
        [weak self] isGranted in
        
        guard let strongSelf = self else {return}
        
        guard isGranted else {
            let settingURL = URL(string: UIApplication.openSettingsURLString)!
            UIApplication.shared.open(settingURL, options: [:], completionHandler: nil)
            
            return
        }
    }
}
//Function that gets path to directory
func getDirectory() -> URL {
    let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
    let documentDirectory = paths[0]
    return documentDirectory
}

//Function that displays an alert

func displayAlert(title: String, message: String) {
    let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
    alert.addAction(UIAlertAction(title: "dismiss", style: .default, handler: nil))
    present(alert, animated: true, completion: nil)
}

//MARK: - Tableview Setup

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return numberOfRecorders
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
    cell.textLabel?.text = String(indexPath.row + 1)
    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let path = getDirectory().appendingPathComponent("\(indexPath.row + 1).m4a")
    
    do {
       // Set up the AVAudioSession configuration
       try AVAudioSession.sharedInstance().setCategory(.playAndRecord, mode: .default)
       try AVAudioSession.sharedInstance().setActive(true)

       // Keep an instance of AVAudioPlayer at the UIViewController level
        self.audioPlayer = try AVAudioPlayer(contentsOf: getDirectory())
       audioPlayer.play()
     } catch let error {
       print(error.localizedDescription)
     }
}

}

我试图更改我的代码以得到相同的错误或类似的错误。无论错误编号如何，我遇到的常见问题是无法播放音频。我正在尝试将它保存到文档目录并将其下载并保存到“开始录制”按钮下方的表格视图中。