iPhone UINavigationController 内部 UIViewController [英] iPhone UINavigationController inside UIViewController

问题描述

步骤:

• 列表项
• 创建一个名为 Nav 的项目.
• 创建一个新的 UIViewController BaseViewController(带有 XIB)和 FirstViewController(带有 XIB).

• 在NavAppDelegat.h中定义baseController变量

• List item
• Create a project called Nav.
• Create a new UIViewController BaseViewController (with XIB) and FirstViewController (with XIB).

• In the NavAppDelegat.h define baseController variable

@interface NavAppDelegate : NSObject <UIApplicationDelegate> {
BaseViewController *baseController;
}
@property (nonatomic, retain) IBOutlet BaseViewController *baseController; 

在 NavAppDelegat.m 中添加 baseController 到窗口:

In the NavAppDelegat.m add baseController to the window:

@synthesize baseController;
(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
[self.window addSubview:baseController.view];
[self.window makeKeyAndVisible];
return YES;
}

打开 BaseViewController.xib 文件并添加 UINavigationController，将其根视图控制器类和 XIB 设置为 FirstViewController(在检查器中).

Open the BaseViewController.xib file and add UINavigationController, set its Root View Controller class and XIB to FirstViewController (in the inspector).

我相信这应该向我展示带有导航栏的 FirstViewController.如果我直接在 MainWindow.xib 上执行此操作，事情会按我的预期工作，但在这里我看不到导航栏.我错过了什么?谢谢！

I believe this should show me the FirstViewController with the navigation bar. If I do this directly on the MainWindow.xib things are working as I expected but here I can't see the navigation bar. What am I missing? THx!

更新:所以问题是，如果我在一些附加控制器(此处为 BaseViewController.xib)中使用 UINavigationController 而不是 MainWindow.xib，我看不到导航栏.

UPDATE: So the problem is only that in case I use UINavigationController inside some additional controller (BaseViewController.xib here) instead of MainWindow.xib i don't see the navigation bar.

推荐答案

我不知道您是否正在尝试将导航控制器直接连接到您的窗口，只是从第二个 XIB(应该可以工作)或者您正在使您的导航控制器成为另一个视图的子视图，这将不起作用.

I can't tell if you're trying to connect your navigation controller directly to your window, just from a second XIB (which should work) or if you're making your navigation controller a subview of another view, which won't work.

UINavigationController 仅用作 UIWindow 的主要子视图或 UITabController 的子视图.Apple 不希望您在其他上下文中嵌入导航控制器.

UINavigationController is only intended to be used as either the primary subview of a UIWindow or as a subview of a UITabController. Apple doesn't want you embedding a navigation controller in other contexts.

请参阅组合视图控制器接口查看控制器编程指南了解更多详情.

See Combined View Controller Interfaces in the View Controller Programming Guide for more details.

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