Hi, I want to make a rightBarButtonItem on NavigationBar static, such that on every navigation bar that single instance of button appears. Right now, I am initializing the button for each and every viewController. I want that it should be a single instance should call a single method, from whichever view is gets tapped. And If I change text of this button , the text of buttons of all viewControllers that are in navigationController's stack should also change. Please help. Thanks.