preferredContentSize
The preferred size for the view controller’s view.
Declaration
var preferredContentSize: CGSize { get set }Discussion
The value in this property is used primarily when displaying the view controller’s content in a popover but may also be used in other situations. Changing the value of this property while the view controller is being displayed in a popover animates the size change; however, the change is not animated if you specify a width or height of 0.0.