使用故事板以编程方式创建导航栏 [英] Creating Navigation Bar programmatically with storyboard

问题描述

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
    UINavigationController *navVC = [UINavigationController new];
    ViewController *VC1 = [ViewController new];

    [window makeKeyAndVisible];

    [navVC setViewControllers:[NSArray arrayWithObject:VC1] animated:NO];

    [window setRootViewController:navVC];

    return window;
}

调用此方法时，我得到了导航栏，但在情节提要的 ViewController 视图中看不到我的内容.我不知道我做错了什么，我试过添加子视图和东西，但没有任何效果.有谁知道我做错了什么?

When calling this method, I get my Nav Bar but I don't see what i have in my ViewController view in the storyboard. I can't figure out what i'm doing wrong though, i've tried adding subview and stuff but nothing works out. Does anyone know what i am doing wrong?

推荐答案

你需要写这段代码，而不是你写的东西

you need to write this code instead of what you have written

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

self. window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
UINavigationController *navVC = [UINavigationController new];
UIStoryboard *mStoryboard = [UIStoryboard storyboardWithName:@"your storyboard name" bundle:nil];

ViewController *VC1 = [mStoryboard instantiateViewControllerWithIdentifier:@"VC"];


[navVC setViewControllers:[NSArray arrayWithObject:VC1] animated:NO];
[self. window setRootViewController:navVC];

 [self. window makeKeyAndVisible];

return YES;

}

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