以编程方式删除NavigationController [英] Removing NavigationController Programmatically

问题描述

该应用程序包含多个导航控制器. (下面的示例)

the application contains more than one navigation controller. (example below)

NavigationController1 ----> ViewController1 ---> TabBarController --> 
NavigationController2 ----> ViewController2

无论何时ViewController1消失，我都会使用NavigationController.view.removeFromSuperview

whenever ViewController1 willDisappear i remove the NavigationController using NavigationController.view.removeFromSuperview

每当加载ViewController2时面临的问题.我只是看到黑屏而已.可能是什么问题?

the problem im facing whenever ViewController2 loads. i just see a black screen nothing else. what might the problem be?

以及删除navigationController的最佳方法是什么?

and what is the best way to remove the navigationController?

推荐答案

黑屏不过是UIWindow.删除NavigationController时，窗口没有任何NavigationController.因此，一旦删除第一个NavigationController，就必须为窗口设置NavigationController.

The black screen is nothing but UIWindow. When you are removing NavigationController , the windows doesn't have any NavigationController. So you will have to set NavigationController for window as soon as you remove your first NavigationController.

您可以尝试这样:

 let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

 appDelegate.window?.rootViewController = YOUR_NAVIGATION_CONTROLLER_OBJECT;

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