How to remove UINavigationBar and UISearchBar hairline

Question

I am creating an iOS 7 app in which I\'d like to have a SearchBar right bellow the NavigationBar, and I wanted them both to look like a single piece. Therefore I need to tin

Answer 1

For those who interested how to implement "adventurous" approach of @Leo Natan, I added the sample code in my answer to the similar question.