definesPresentationContext
A Boolean value that indicates whether this view controller’s view is covered when the view controller or one of its descendants presents a view controller.
Declaration
var definesPresentationContext: Bool { get set }Discussion
When using the UIModalPresentationStyle.currentContext or UIModalPresentationStyle.overCurrentContext style to present a view controller, this property controls which existing view controller in your view controller hierarchy is actually covered by the new content. When a context-based presentation occurs, UIKit starts at the presenting view controller and walks up the view controller hierarchy. If it finds a view controller whose value for this property is true, it asks that view controller to present the new view controller. If no view controller defines the presentation context, UIKit asks the window’s root view controller to handle the presentation.
The default value for this property is false. Some system-provided view controllers, such as UINavigationController, change the default value to true.
See Also
Presenting a view controller
show(_:sender:)showDetailViewController(_:sender:)UIViewController.ShowDetailTargetDidChangeMessagepresent(_:animated:completion:)dismiss(animated:completion:)modalPresentationStyleUIModalPresentationStylemodalTransitionStyleUIModalTransitionStyleisModalInPresentationprovidesPresentationContextTransitionStyledisablesAutomaticKeyboardDismissalshowDetailTargetDidChangeNotification