UITabBar is a user interface element in Apple's iOS, which is a bar at the bottom of the screen and has images and/or text representing different views of an application.
UITabBar
UITabBar - iOS Class (Apple Docs)
Class Structure = UITabBar : UIView : UIResponder : NSObject
A UITabBar is a common user interface element used in constructing multi-view applications. Each tab/button may contain text or an image, and when pressed corresponds to a uiviewcontroller, or a subclass of (such as a uinavigationcontroller).
Image: screenshot of the UITabBar in Apple's Health application.
The object which controls a Tab Bar, is a uitabbarcontroller. This class manages the view swapping that occurs when the user selects another tab.
