UINavigationController ios7 - NavTab in front of view

Question

I'm developing a new application to ios and i'm using UINavigationController. When i'm developing in the Xcode the view is that:

But in the simulator (iOS 7) this is the result:

And when i use iOS 6 in the simulator, this is the result:

This is my code for use UINavigationController:

RootController *controller = [[RootController alloc]init];
UINavigationController *navController = [[UINavigationController alloc]initWithRootViewController:controller];
self.window.rootViewController = navController;

Answer 1

As already pointed out, a straightforward solution is adding this snippet in your viewController's viewDidLoad:

if ([self respondsToSelector:@selector(setEdgesForExtendedLayout:)]) { // if iOS 7
    self.edgesForExtendedLayout = UIRectEdgeNone; //layout adjustements
}