Question

Mt rootViewController (i.e the first viewcontroller) is not occupying full screen, while the other VCs do (see screenshot). In IB, they look identical. I am using iOS 6 / iOS 5.1 simulator.

My AppDelegate method looks innocent. Any suggestions?

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // hide status bar
    [UIApplication sharedApplication].statusBarHidden = YES;
    _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // allocate the root view controller
    _window.rootViewController = [[LMHomeViewController alloc] init];
    // add a navigation controller
    [LMNavigationController initSharedInstanceWithRootViewController:self.window.rootViewController];
    [_window addSubview:LMNavigationController.sharedInstance.view];
    // show the window
    [_window makeKeyAndVisible];
    return YES;
}

Answer 1

Hide the status bar in your LMHomeViewController xib file.

In your info.plist set “Status bar is initially hidden” to YES.

I think the problem is that your LMHomeViewController get “rendered with a status bar” and then you add this view to a view without a status bar, so there is a 20 px gap.