How to subclass UINavigationBar for a UINavigationController programmatically?

Question

I\'m using a custom drawRect function to draw on UINavigationBar across my application in iOS4, it doesn\'t use images, only CoreGraphics.

Since you ca

Answer 1

As of iOS6, this is now quite simple to accomplish without swizzling or messing with other classes by using UINavigationControllers method initWithNavigationBarClass:toolbarClass:

- (id)initWithNavigationBarClass:(Class)navigationBarClass 
                    toolbarClass:(Class)toolbarClass;

From the docs:

Initializes and returns a newly created navigation controller that uses your custom bar subclasses.

_{Answer updated for iOS6.}