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

use following code in AppDelegate (didFinishLaunchingWithOptions)

Swift :

UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .any, barMetrics: .default) 
UINavigationBar.appearance().shadowImage = UIImage() 

Objective c :

    [[UINavigationBar appearance] setBackgroundImage:[[UIImage alloc] init]
                                  forBarPosition:UIBarPositionAny
                                      barMetrics:UIBarMetricsDefault];

[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];