更改初始化时位于情节提要中的 UINavigationController 的 rootviewcontroller [英] changing rootviewcontroller of a UINavigationController which is in storyboard while its initialised

问题描述

我在故事板中有一个 UINavigationController 控制器，它是入口点，它的类是 MyNavigationController.我没有从故事板将 rootviewcontroller 分配给 UINavigationController，但想从 MyNavigationController 分配相同的内容，从一些初始化方法请帮助我如何做到这一点还是不可能?.

I have a UINavigationController controller in the story board which is the entry point,whose class is MyNavigationController. I have not assigned the rootviewcontroller to the UINavigationController, from the story board ,but want to assign the same from MyNavigationController,From some initialize methods Please help me how to do that or is it impossible?.

推荐答案

choice-1

您可以识别您的 Stroryboard ID 并设置为 Root

you can Identify your Stroryboard ID and set as Root

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
UIViewController *rootViewController = [storyboard instantiateViewControllerWithIdentifier:@"LoginSignupVC"];
[[UIApplication sharedApplication].keyWindow setRootViewController:rootViewController];
}

选择 2

初始视图控制器会自动识别您的根控制器

the Initial View COntroller automatically identify your Root controller

您可以使用属性在您的视图控制器上识别您的 Stroryboard ID

you can Identify your Stroryboard ID on your viewcontroller using Attribute

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
MyNavigationController *rootViewController = [storyboard instantiateViewControllerWithIdentifier:@"LoginSignupVC"];
[[UIApplication sharedApplication].keyWindow setRootViewController:rootViewController];
}

选择 3

xcode --> 菜单 -> 编辑器 -> embedIn -> NavigationController

xcode --> Menu -> editor -> embedIn -> NavigationController

你可以得到如下输出

它会自动找到您的根控制器

it find automatically your root controller

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