UINavigationController未显示根视图控制器 [英] UINavigationController not showing the Root View controller

问题描述

我在视图中有一个大小为320x218的UIView（下面的代码中的menuView）。我想在此视图中加载导航控制器。我使用以下代码来做到这一点：

I have a UIView (menuView in code below) of size 320x218 inside a view. I want to load a navigation controller into this view. Im using the following code to do that:

MenuViewController *menuController = [[MenuViewController alloc] initWithNibName:@"MenuViewController" bundle:nil];

UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:menuController];
navigationController.navigationBarHidden = YES;

[menuView addSubview:navigationController.view];
[menuController release];
[navigationController release];

执行时，根视图不会显示在该视图中。仅显示导航栏，其余视图为空。

When I execute it, the root view is not displayed in that view. Only a navigation bar is displayed and the rest of the view is empty.

修改：

我刚刚在MenuViewController的initWithNibName：和viewDidLoad中放置了一个NSLog（）。 initWithNibName中的那个：被调用但viewDidLoad中的那个：不是：S

I just placed an NSLog() in both initWithNibName: and viewDidLoad: of MenuViewController. The one in initWithNibName: gets called but the one in viewDidLoad: doesn't :S

更新：

我试图将 menuController 推送到我的 navigationController ，因为它没有出现，它可能不会在堆栈上。例外：

I tried to push menuController to my navigationController thinking since its not appearing, it might not be on the stack. Exception:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Pushing the same view controller instance more than once is not supported

推荐答案

我在这里找到答案：

UIViewController -viewDidLoad未被调用

我必须在 -initWithRootViewController 之后添加这些代码行才能加载我的root视图view Controller：

I had to add these lines of code after -initWithRootViewController in order to load the view of my root view Controller:

navigationController.navigationBarHidden = YES;
[navigationController setView:menuController.view];

这篇关于UINavigationController未显示根视图控制器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！