What is the root view controller?
The root view controller is simply the view controller that sits at the bottom of the navigation stack. You can access the navigation controller’s array of view controllers through its viewControllers property. To access the root view controller, we ask for the first item of the array of view controllers.
What is root view controller in Swift?
The root view controller provides the content view of the window. Assigning a view controller to this property (either programmatically or using Interface Builder) installs the view controller’s view as the content view of the window.
How do I change the default view controller?
Its easy, just:
- Open your Storyboard.
- Click on the View Controller corresponding to the view that you want to be the initial view.
- Open the Attributes Inspector.
- Select the “Is Initial View Controller” check box in the View Controller section.
What is view controller Xcode?
Overview. You use view controllers to manage your UIKit app’s interface. A view controller manages a single root view, which may itself contain any number of subviews. User interactions with that view hierarchy are handled by your view controller, which coordinates with other objects of your app as needed.
What is navigation Controller in IOS?
A navigation controller is responsible for managing the navigation of hierarchical content. The navigation controller manages the current displayed screens using the navigation stack. At the bottom of this stack is the root view controller and at the top is the view controller currently displayed.
What is a view controller of an app?
Specifically, a view controller manages a view hierarchy and the state information needed to keep those views up-to-date. Every UIKit app relies heavily on view controllers to present content, and you frequently define custom view controllers to manage your views and UI-related logic.
What is the purpose of a view controller?
A view controller acts as an intermediary between the views it manages and the data of your app. The methods and properties of the UIViewController class let you manage the visual presentation of your app.