documentInteractionControllerWillPresentOpenInMenu(_:)
Called when a document interaction controller is about to display an Open In menu.
Declaration
optional func documentInteractionControllerWillPresentOpenInMenu(_ controller: UIDocumentInteractionController)Parameters
- controller:
The document interaction controller that is about to display a menu.
Discussion
The Open In menu is used to select an application for opening the current file. You can use this method to update your user interface in response to displaying the menu.