How do I get the RootViewController from a pushed controller?

Question

So, I push a view controller from RootViewController like:

[self.navigationController pushViewController:anotherViewController animated:YES] ;

BUT, FRO

Answer 1

How about asking the UIApplication singleton for its keyWindow, and from that UIWindow ask for the root view controller (its rootViewController property):

UIViewController root = [[[UIApplication sharedApplication] keyWindow] rootViewController];