What classes does UIButton rely on in the hierarchy in iOS?

The UIButton class in iOS is a subclass of UIControl, which in turn inherits from UIView. The class hierarchy looks like this:

• NSObject
  • UIResponder
    • UIView
      • UIControl
        • UIButton

This means that UIButton inherits all properties and methods of UIView and UIControl, allowing it to handle user interaction events (such as taps) and display a graphical interface.