All navigation functionality is provided through five main classes:
UINavigationController coordinates all the components for the current navigation stack. In addition to managing the navigation stack and all transitions, it has references to the navigation bar and the optional toolbar.
UINavigationBar is a view for the navigation bar at the top of the screen. It is used by
UINavigationController to show the title of the current scene along with a button to return to the previous screen if needed. It can be used on ...