Lifecycle of UIViewController in Swift / Objective c.

UIViewController is the collection of multiple Views. The view controller manages subview layouts, sizing, interface orientations, and functional implementation. It handles instantiated classes from itself like TableviewController, CollectionViewcontroller, TableViewControllert, UISplitViewControlleretc. It also managing content and handles user interaction events. We can create UIViewController views using three different ways Programmatically, Storyboard, and  Xib’s. The view controller class is the object of UIResponder class and it corresponds to the UIResponder chain. ViewController has a lifecycle for managing view contents, the relationship between subviews, sizing, positioning, Navigation operation between view controllers. UIviewcontroller Lifecycle is performed through following predefined standard functions. 1) ViewDidLoad( ) …

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