Swift: Popover dismiss callback

Question

There are two UIViewConrollers in my Storyboard: MainViewController and SecondViewController. I\'m going to show S

Answer 1

You need to set yourself as the popOverDelegate. You have to do this in the popoverPresentationController of the destination.

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    segue.destination.popoverPresentationController?.delegate = self
}

Then declare implement the delegates in your ViewController:

extension FormViewController: UIPopoverPresentationControllerDelegate {

    func popoverPresentationControllerDidDismissPopover(_ popoverPresentationController: UIPopoverPresentationController) {
        printBreadcrumb("Dismissed popover")
    }

}