Defined as the visual building blocks of the application interfaces that developers build, they help in the overall application organization and the appearance of the application on the screen.
View hierarchies, that is, subviews, embedded in the host view, known as the superview improve the management of the application interface.
Views are used in bringing about gesture controls, touch response, shapes sizes and the custom content created in an app.
It is a class that defines the screen visible to the user and all interactions within it, its background colour displays, text labels, buttons, and other interface control elements commonly found in any application.
Everything we see on an app is actually a UIView or a subclause of one. They are thus the fundamental building blocks of any application.
Using UIKit or Core Graphics for drawings and animations (such as changing to new values)
Responsive auto layouts for change in view hierarchy and position of subviews, of which there can be anywhere from 0 or more in number.
As a subclass of UIResponder, UIViews also recognise common gestures by installing gesture recogniser and respond to touch and other interaction events.
Since the first screen that we see a subclause of the UIViewController where the UI denotes that this is a part of the UIKit that is the framework in iOS used to build user interfaces, handle inputs and create information.
Simply by adding a background color to the viewController’s view, as we do below, we can modify the application as it appears to the user.
Thus, the first thing we do is access the background colour property and code in a background colour to the app.
