Question

I have a modal popup view with a nav bar and when I try to access the height of that nav bar from the currently loaded view using the statement…

self.navigationController.navigationBar.frame.size.height;

…it returns 0. Why would that be?

Thanks so much in advance for your wisdom!

Answer 1

It is probably because one of the object you are using in your expression is nil.

This is probably the self.navigationController itself for example. Maybe you misinterpreted your view hierarchy? (Try to NSLog(@"%@", self.navigationController); to check if it is nil or not and be sure)