Question

Good day. I try to add new tab with navigation controller to my app. I create a new tabbed app (xcode 4.2) and in appdelegate write this

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    UIViewController *viewController1 = [[[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] autorelease];
    UIViewController *viewController2 = [[[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil] autorelease];
    NavController *navController = [[[NavController alloc] initWithNibName:@"NavController" bundle:nil] autorelease]; //my controller
    self.tabBarController = [[[UITabBarController alloc] init] autorelease];
    self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, navController, nil];
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

NavController.h file

@interface NavController : UINavigationController

@end

Here the structure of project

And when I run project it show me empty tab

But in xib file I add lable and buttons

May be I forgot something?

Answer 1

Initialise your navigation controller with some UIViewController that is :

    RootViewController *rootViewController = [[[RootViewController alloc] initWithNibName:@"RootViewController" bundle:nil] autorelease];
    NavController *navController = [[[NavController alloc] initWithRootViewController: rootViewController] autorelease]; 

This might help.