Question

我收到了SIGABRT错误：

***由于未捕获的异常终止应用程序＆＃39; NSUnknownKeyException＆＃39;，原因：＆＃39; [setValue：forUndefinedKey：]：此类不是键值changeToNewView的键值编码兼容。＆＃ 39;

这些是我的视图控制器：

import UIKit

class PhotoShareViewController: UIViewController {

    @IBOutlet weak var imageView: UIImageView!
    @IBOutlet weak var contentTextView: UITextView!

    @IBOutlet weak var thatTextField: UITextField!
    @IBOutlet weak var thisTextField: UITextField!
    var presenter: PhotoShareModuleInterface!
    var image: UIImage!


    @IBAction func thisUploadPhoto(_ sender: Any) {

        if thisTextField.text != "" //&& thatTextField.text != ""{
            performSegue(withIdentifier: "segue", sender: self)
        }
    }


    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

        var photoShareLabelViewController = segue.destination as! PhotoShareLabelViewController

        photoShareLabelViewController.thisString = thisTextField.text!

       // photoShareLabelViewController.thatString = thatTextField.text!

    }

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

        imageView.image = image
    }

    override var prefersStatusBarHidden: Bool {
        return true
    }

    @IBAction func didTapCancel(_ sender: AnyObject) {
        presenter.cancel()
        presenter.pop()
    }

    @IBAction func didTapDone(_ sender: AnyObject) {
        guard let message = thatTextField.text, !message.isEmpty else {
            return
        }
        guard let messageOne = thisTextField.text, !messageOne.isEmpty else {
            return
        }

        presenter.finish(with: image, content:message)
        presenter.dismiss()
    }
}

extension PhotoShareViewController: PhotoShareViewInterface {

    var controller: UIViewController? {
        return self
    }
}

PhotoShareLabelViewController：

import UIKit

class PhotoShareLabelViewController: UIViewController {

    @IBOutlet weak var thisLabel: UILabel!

    @IBOutlet weak var thatLabel: UILabel!

    @IBOutlet weak var thisButton: UIButton!

    @IBOutlet weak var thatButton: UIButton!


    var thisString = String()

  //  var thatString = String()

     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        thisLabel.text = thisString

        thisButton.setTitle(thisString, for: UIControlState.normal)

     //   thatLabel.text = thatString

    //    thatButton.setTitle(thatString, for: UIControlState.normal)

    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    /*
     // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
     // Get the new view controller using segue.destinationViewController.
     // Pass the selected object to the new view controller.
     }
     */

}

我想知道为什么会这样。我检查了故事板上的所有IBOutlets和IBActions，它们似乎工作正常。我认为它遇到错误的代码是我的segue。代码工作正常，直到我尝试在两个视图控制器之间传递数据。

我在一个完全空的xcode项目上做了同样的事情，并且传递数据的代码似乎工作正常，但是当我尝试将它放入我的实际工作空间时似乎有问题。

任何有关此错误的帮助都会很棒！

Answer 1

您的故事板中有一个视图，连接到控制器中的插座。但你删除了插座。

转到故事板，按住Ctrl键并单击视图，然后单击x。删除连接。

这是什么意思？ “＆＃39; NSUnknownKeyException＆＃39;，原因：......此类不是密钥值符合密码X”？

1 个答案: