通过类函数从另一个Swift文件执行Segue [英] Perform Segue From Another Swift File via a class function

问题描述

如果所保存的类未连接到viewController，如何使用实现的类函数执行segue?

How can I use a class function I implement to perform a segue if the class it is held in is not connected to a viewController?

推荐答案

要执行segue，您需要segue源自的视图控制器实例-例如:

In order to perform a segue, you need the instance of view controller where the segue originates from - for example:

class MyViewController {
}

class MyClass {
    showNextView(fromViewController: UIViewController) {
        fromViewController.performSegueWithIdentifier("segue_id", sender: fromViewController)
    }
}

但是，我不鼓励这种互动.不要告诉视图控制器如何显示视图-让它自己做，然后问吧.

However I discourage this kind of interaction. Don't tell the view controller how to show a view - let it do on its own, and just ask it.

因此，我建议在视图控制器中创建一个实例方法:

So, I suggest creating an instance method in your view controller:

class MyViewController {
    ...
    func goToNextView() {
       performSegueWithIdentifier("segue_id", sender: self)
    }
}

并使用它进行过渡:

class MyClass {
    showNextView(fromViewController: MyViewController) {
        fromViewController.goToNextView()
    }
}

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