如何重置根视图控制器 [英] How to reset root view controller

问题描述

是否可以重置根视图控制器?重置是指将其重置为初始状态，以便再次调用 viewDidLoad .我正在使用 UITabBarController ，当我注销时，希望卸载以前加载的所有选项卡.

Is it possible to reset the root view controller? With reset I mean resetting it to its initial state so viewDidLoad will be called again. I'm using a UITabBarController and when I logout I want all the tabs previously loaded to be unloaded.

推荐答案

您可以通过在注销操作时将TabBarController的实例设置为 rootViewController 来实现.

You can do this by setting the instance of TabBarController to rootViewController on logout action.

快捷键3:

let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let tabBarController = storyBoard.instantiateViewController(withIdentifier: "TabBarController") as! UITabBarController
UIApplication.shared.keyWindow?.rootViewController = tabBarController
UIApplication.shared.keyWindow?.makeKeyAndVisible()

目标C:

UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UITabBarController *tabBarController = [storyBoard instantiateViewControllerWithIdentifier:@"TabBarController"];
[[[UIApplication sharedApplication] keyWindow] setRootViewController:tabBarController];
[[[UIApplication sharedApplication] keyWindow] makeKeyAndVisible];

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