hi, i was working with a project using the Empty Template and now i want to implement a navigation controller. first i dropped a navigation controller from the objects library but when running the app, the app doesn't view what i wanted to be views such as buttons, UImages,...etc. i feel like that i must add something in the appDelegate files but i actually don't know. Besides, ya i know i can use the master-detail template but being a developer i wanna know the basics and what's happening behind the scenes in each template. Thank you!