动态更改用于导航控制器的rootviewcontroller [英] Changing rootviewcontroller for navigation controller dynamically

问题描述

我正在尝试在 didFinishLaunchingWithOptions 中的 NavigationController 中更改 RootViewController .
但是我不知道该怎么办.

I'm trying to change RootViewController for NavigationController in didFinishLaunchingWithOptions.
But I don't know how can I do that.

我也通过此链接:
http://starterstep.wordpress.com/2009/03/05/changing-a-uinavigationcontroller%E2%80%99s-root-view-controller/

这是我在 didFinishLaunchingWithOptions 中的代码:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    UIViewController *rootController=[[HomePageController alloc] initWithNibName:@"HomePageController" bundle:nil];
    navigationController=[[UINavigationController alloc] initWithRootViewController:rootController];

//    presentation=[[PresentationController alloc]initWithNibName:@"PresentationController" bundle:nil];
//    
//    navigationController=[[UINavigationController alloc]initWithRootViewController:presentation];
//    
//    presentationList=[[PresentationListController alloc]initWithNibName:@"PresentationListController" bundle:nil];
//    
//    UINavigationController *listnavigation = [[UINavigationController alloc] initWithRootViewController:presentationList];
//    
//    revealer=[[ZUUIRevealController alloc]initWithFrontViewController:navigationController rearViewController:listnavigation];

    [self.window addSubview:navigationController.view];

    [self.window makeKeyAndVisible];
    return YES;
}

现在我发表评论，然后运行应用程序以更改 rootviewcontroller .但这不是实际的方法.

Right now I comment and then run application to change rootviewcontroller. However this is not the practical approach.

任何帮助将不胜感激.

推荐答案

代替此:

[self.window addSubview:navigationController.view];

输入:

self.window.rootViewController = navigationController;

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