ios - 为什么不能将 recordAudioURL 分配给 segue.destination 对象？

Question

我正在学习在线类(class)，讲师代码具有以下代码，但我收到错误。这可能是 Swift 或 Xcode 更新的问题。您将如何解决此错误？

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
   if segue.identifier == "stopRecording" {
      let playsoundsVC = segue.destination as! PlaySoundsViewController
      let recordedAudioURL = sender as! URL
      playsoundsVC.recordedAudioURL = recordedAudioURL
   }
}

代码的最后一行给出了错误:

Cannot assign value of type 'URL' to type 'URL?.Type'

edit1:PlaySoundsViewController 文件的开头

class PlaySoundsViewController: UIViewController {
  var recordedAudioURL = URL?.self
}

Answer 1

确保 PlaySoundsViewController 内的 var 像这样声明

class PlaySoundsViewController:UIViewController {
   var recordedAudioURL:URL?
}

或var RecordedAudioURL:URL!如果是100%，则会被分配