A Boolean value that indicates whether the view controller specifies the transition style for view controllers it presents.
Mac Catalyst 13.0+Beta
When a view controller’s definesPresentationContext property is YES, it can replace the transition style of the presented view controller with its own. When the value of this property to YES, the current view controller’s transition style is used instead of the style associated with the presented view controller. When the value of this property is NO, UIKit uses the transition style of the presented view controller. The default value of this property is NO.
Posted when a split view controller is expanded or collapsed.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.