Avoid UIBarButtonItem fade out / fade in during pushViewController animation

Question

I have in my only-ios5 application a navigationControllerDelegate:

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    UIBarButtonItem *myButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"common-settingsbutton"] style:UIBarButtonItemStylePlain target:nil action:nil];
    [viewController.navigationItem setRightBarButtonItem:myButton]; 
}

It works, but when a push view controller with default animation occurs (i.e. using a "push segue") the rightBarButtonItem fadeout and fadein during animation.

How can I avoid this?

---

UPDATE

The only workaround I found is:
create UINavigationBar background with same UIBarButtonItems drawn in png (in the same position, same color) and set background correctly based on buttons I need. Then, of course, add your UIBarButtonItems.

Answer 1

The only workaround I found is: create UINavigationBar background with same UIBarButtonItems drawn in png (in the same position, same color) and set background correctly based on buttons I need. Then, of course, add your UIBarButtonItems.