The preferred size for the view controller’s view.
- iOS 7.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
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