NavigationBar定位不正确。 如何解决这个问题呢？

Question

I have a Navigation Controller in my main view and also subview. And I use the following code to add the navigation view when needed.

In appdelegate.h page

    @interface AapkeappsAppDelegate : NSObject <UIApplicationDelegate, UINavigationControllerDelegate> {
UIWindow *window;
AapkeappsViewController *viewController;
UINavigationController *navigationController; 
}
 @property (nonatomic, retain) IBOutlet UIWindow *window;
 @property (nonatomic, retain) IBOutlet AapkeappsViewController *viewController;
 @property (nonatomic, retain) IBOutlet UINavigationController *navigationController;
 @end

In appdelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:
  (NSDictionary *)launchOptions 
{    
    UINavigationController *nvcontrol =[[UINavigationController alloc]   
               initWithRootViewController:viewController];
[self.window addSubview:viewController.view];
[self.window addSubview:nvcontrol.view];
[window makeKeyAndVisible]; 
return YES;
}

This code work when press the button

Homepage * rootViewController = [[Homepage alloc] initWithNibName:@"Homepage"   bundle:nil];
    navigationController = [[UINavigationController alloc]  
initWithRootViewController:rootViewController];
    [self.view addSubview:navigationController.view];

However, the navigation bar is not positioned correctly. I have posted a pic below. Anyone knows what is the potential problem? And how to solve this gap of navigationbar? Help me anyone. Thanks in advance. Here i can post the image. So i have posted a pic in the link Image

Answer 1

Remove this line from your code [self.window addSubview:viewController.view];

you first load your View controller than after load your navigationController instead this only navigationController.VIew you have to add on window..

hope it`s solve your problem.