A UIViewController is an object which manages the view hierarchy of the UIKit application . The UIViewController defines the shared behavior and properties for all types of ViewController that are used in the iOS application. The UIViewController class inherits the UIResponder class.
Read moreWhich method is called first in a ViewController’s lifecycle?
viewDidAppear(_:) This method gets called after the view controller appears on screen. You can use it to start animations in the user interface, to start playing a video or a sound, or to start collecting data from the network.
Read moreWhich is called first viewDidLoad or viewWillAppear?
viewDidLoad is things you have to do once, you should do things that you only have to do once in viewDidLoad – like setting your UILabel texts. viewWillAppear is called just before the view is displayed . This happens always after viewDidLoad and is called every time the view is displayed.
Read moreWhat is UIViewController lifecycle?
In iOS each you can create views using storyboards, xibs or programmatically . Independent from the approach, we need to understand when the view is created, loaded, appeared or destroyed so we can improve our user interface.16 Ağu 2019
Read moreWhat are three of the primary responsibilities of a UIView object?
iOS Fundamentals — UIView: Three Major Responsibilities
Read moreWhat is UI responder?
An abstract interface for responding to and handling events .
Read moreWhat is an iOS phone?
iOS device (IPhone OS device) Products that use Apple’s iPhone operating system, including the iPhone, iPod touch and iPad . It specifically excludes the Mac. Also called “iDevice” or “iThing.” See iDevice and iOS versions.
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