How to draw a transparent UIToolbar or UINavigationBar in iOS7

Question

I would like an entirely transparent UIToolbar and/or UINavigationBar. I have tried the various incantations suggested for pre- and post-iOS 5 but

Answer 1

If you want to do it through the entire app you should use the UIAppearance proxy (iOS5+):

UINavigationBar *navigationBarAppearance = [UINavigationBar appearance]; navigationBarAppearance.backgroundColor = [UIColor clearColor]; [navigationBarAppearance setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault]; navigationBarAppearance.shadowImage = [[UIImage alloc] init];

Docs: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIAppearance_Protocol/Reference/Reference.html

Article: http://nshipster.com/uiappearance/