UINavigationController initWithRootViewController

gistfile1.txt

So there is tricky thing (it will happen sometimes)

/*
* When set a storyboardID in a viewcontroller, and you want to show the navigation item
* you need to init NavigationController with rootviewcontoller
*/
UIViewControllers *niceVC = [shop instantiateViewControllerWithIdentifier:@"nice"];
UINavigationController *niceNav = [[UINavigationController alloc] initWithRootViewController:nice];

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There is a same thing we can do it in storyboard
So we create a UIViewController in storyboard, and embbed in navigationController, set the navigationController storyboard id to "nice".
And return it, it will be a navigation controller with roote view controller with niceVC