Question

我已经开始学习iOS应用开发了。在制作第一个应用程序时，我遇到了一个问题。我也试图寻找已经提出问题的解决方案，但可能发现任何错误。任何人都可以告诉我，代码中的错误是什么。我使用了2个按钮和1个标签，并加入了3个IBOutlets和2个带有2个IBAction的按钮。请指导我... 我找到了同样的问题，并尝试了我在那里找到的几乎所有东西。在那之后，我问了我的问题......

class RecordSoundsViewController: UIViewController {
  var audioRecorder: AVAudioRecorder!


  @IBOutlet weak var recordingLabel: UILabel!
  @IBOutlet weak var recordButton: UIButton!
  @IBOutlet weak var stopRecordingButton: UIButton!

  override func viewDidLoad() {
    super.viewDidLoad()
    stopRecordingButton.isEnabled = false
  }

  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
  }


  @IBAction func recordAudio(_ sender: AnyObject) {
    recordingLabel.text = "Recording in progress"
    stopRecordingButton.isEnabled = true
    recordButton.isEnabled = false

    let dirPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
    let recordingName = "recordedVoice.wav"
    let pathArray = [dirPath, recordingName]
    let filePath = URL(string: pathArray.joined(separator: "/"))


    let session = AVAudioSession.sharedInstance()
    try! session.setCategory(AVAudioSessionCategoryPlayAndRecord, with: AVAudioSessionCategoryOptions.defaultToSpeaker)

    try! audioRecorder = AVAudioRecorder(url: filePath!, settings: [:])
    audioRecorder.isMeteringEnabled = true
    audioRecorder.prepareToRecord()
    audioRecorder.record()

  }

  @IBAction func stopRecording(_ sender: UIButton) {
    recordButton.isEnabled = true
    stopRecordingButton.isEnabled = false
    recordingLabel.text = "Tap to Record"
    audioRecorder.stop()

    let audioSession = AVAudioSession.sharedInstance()
    try! audioSession.setActive(false)
  }
}

NSUnknownKeyException此类不是键tapToRecord的键值编码兼容

0 个答案: