iOS Development UIKit Framework

Question 1

Which UIKit class is the base class for all visible UI elements?

Accepted Answer

UIView

Answer

`UIView` is the fundamental building block for all UIKit UI elements, providing drawing, layout, and event handling.

Question 2

What is the role of UIViewController in a UIKit app?

Accepted Answer

Manages a view hierarchy and coordinates with the app's data model

Answer

UIViewController manages a single root view and its subviews, acting as the intermediary between the app's data and its views.

Question 3

Which UIViewController lifecycle method is called after the view is loaded into memory?

Accepted Answer

viewDidLoad

Answer

`viewDidLoad` is called once after the view controller's view is loaded into memory, making it ideal for one-time setup.

Question 4

What does Auto Layout do in UIKit?

Accepted Answer

Defines the size and position of views using constraint relationships

Answer

Auto Layout uses constraints to dynamically calculate the size and position of every view in the hierarchy.

Question 5

Which UIKit class is used to display a scrollable list of items?

Accepted Answer

UITableView

Answer

UITableView displays data in a single-column scrollable list with rows organized into optional sections.

iOS Development Practice Test