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navigationController(_:willShow:animated:)

Notifies the delegate before the navigation controller displays a view controller’s view and navigation item properties.

Declaration

optional func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool)

Parameters

  • navigationController:

    The navigation controller that is showing the view and properties of a view controller.

  • viewController:

    The view controller whose view and navigation item properties are being shown.

  • animated:

    True to animate the transition; otherwise, False.

Mentioned in

See Also

Responding to a view controller being shown