crash - Swift 3 - 自定义 segue 因 UIStoryboardSegueTemplate.m :85 而崩溃

Question

据此link ，我正在尝试制作自己的自定义segue。

在初始 View Controller (标题:First)中，按 2 ( UIButton ) 转至 Second .

但应用程序总是在 performSegue(withIdentifier: "customSegue", sender: self) 崩溃出现错误:*** Assertion failure in -[UIStoryboardSegueTemplate segueWithDestinationViewController:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3599.6/UIStoryboardSegueTemplate.m:85
这是主要的 Storyboard:



碰撞:


CustomSegue

import UIKit

class CustomSegue: UIStoryboardSegue {

    override func perform() {
        let sourceView = source.view!
        let destView = destination.view!

        let screenWidth = UIScreen.main.bounds.size.width
        let screenHeight = UIScreen.main.bounds.size.height

        destView.frame = CGRect(x: 0, y: screenHeight, width: screenWidth, height: screenHeight)

        let window = UIApplication.shared.keyWindow
        window?.insertSubview(destView, aboveSubview: sourceView)

        UIView.animate(withDuration: 0.4, animations: { 
            sourceView.frame = sourceView.frame.offsetBy(dx: 0.0, dy: -screenHeight)
            destView.frame = destView.frame.offsetBy(dx: 0.0, dy: -screenHeight)
            }) { [weak self] (finished) in
                guard let strongSelf = self else { return }

                strongSelf.source.present(strongSelf.destination, animated: false, completion: nil)
        }

    }
}

Second只是一个空的 View Controller :

import UIKit

class Second: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

}

我将项目中的设置与下载的示例进行比较，但找不到差异。

我应该如何解决这个崩溃？

Answer 1

对于那些有兴趣的人。

我花了将近 2 天的时间才找到这个:为了克服这个崩溃，我必须在 Storyboard 中指定“模块” - 单击 Segue - 属性检查器。