Question

我正在尝试使用三个标签创建一个应用。我有ViewControllers所有设置和工作，但当我尝试在任何不同的选项卡上运行Web视图，而不是拳头，它崩溃与这样的消息：

2016-10-06 23:17:54.565932 Techaway[6827:2354958] Unknown class ThirdViewController in Interface Builder file.
2016-10-06 23:17:59.520639 Techaway[6827:2354958] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<Techaway.SecondViewController 0x100f0bc20> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key Home.'

如果在第一个ViewController中，它可以很好地工作，这让我很困惑。

SecondViewController中的代码示例：

import UIKit

class SecondViewController: UIViewController {

    var url = URL(string: "https://example.com/")!

    @IBOutlet weak var webView: UIWebView!

    @IBAction func home(_ sender: AnyObject) {
        webView.loadRequest(URLRequest(url: url))


}


override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    webView.loadRequest(URLRequest(url: url))
}

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

}

我只是不明白为什么它在一个地方工作而不是另一个地方！

Answer 1

您的xib中可能连接不正确。所以你需要在storyboard或xib中删除未引用的IBOutlet表格UIViewController。

有关此内容的更多信息请参阅以下链接 What does this mean? "'NSUnknownKeyException', reason: … this class is not key value coding-compliant for the key X"

更改选项卡时，Web View会崩溃选项卡式应用程序？

1 个答案: