iOS - Have a good popToRootViewController and open a new UIViewController

Question

I push a UIViewController twice in rootViewController(one by one) Now I want to back to rootviewcontroller and open a new UIViewController ,What shall I do? I can use notification to achieve it ,but I really want to know a good way to achieve it .

Answer 1

首先，我创建一个新的UIViewController，然后将其添加到navigationController的viewControllers中，至少我使用popToViewController转到新的UIViewController

Answer 2

Think about it as a stack. First you in rootViewController, then you push two viewController in front of it.

All you need is

func popViewController(animated: Bool) -> UIViewController?

So all you need is to pop twice to go back to rootViewController.