Swift - 如何关闭所有视图控制器以返回 root [英] Swift - How to dismiss all of view controllers to go back to root

问题描述

我希望我的应用可以在每次用户需要时转到第一个视图控制器.

I want a my app can go to a first view controller when every time users want it.

所以我想创建一个函数来关闭所有的视图控制器，无论它是在导航控制器中推送还是以模态呈现或打开任何方法.

So I want to create a function to dismiss all the view controllers, regardless of whether it is pushed in navigation controllers or presented modally or opened anything methods.

我尝试了各种方法，但我肯定没有关闭所有的视图控制器.有没有简单的方法?

I tried various ways, but I failed to dismiss all the view controllers certainly. Is there an easy way?

推荐答案

试试这个:

self.view.window?.rootViewController?.dismiss(animated: true, completion: nil)

它应该关闭根视图控制器上方的所有视图控制器.

it should dismiss all view controllers above the root view controller.

如果这不起作用，您可以通过运行像这样的 while 循环来手动执行此操作.

If that doesn't work than you can manually do that by running a while loop like this.

func dismissViewControllers() {

    guard let vc = self.presentingViewController else { return }

    while (vc.presentingViewController != nil) {
        vc.dismiss(animated: true, completion: nil)
    }
}

它会关闭所有的 viewController 直到它有一个presentingController.

It would dismiss all viewControllers until it has a presentingController.

如果你想关闭/弹出推送的ViewControllers，你可以使用

Edit : if you want to dismiss/pop pushed ViewControllers you can use

self.navigationController?.popToRootViewController(animated: true)

希望有帮助.

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