What basic class inheritance is used to create controls in the user interface?

In iOS, the basic class for creating user interface controls is UIView. All visual components such as buttons (UIButton), labels (UILabel), text fields (UITextField), and others inherit from UIView. This allows creating custom controls by extending the base class.

Example of inheritance:

class CustomButton: UIButton {
    // Additional customization
}

If you need to create a more general visual element without built-in button logic, you can inherit directly from UIView.