how to center a popoverview in swift

Question

I have the following code to show a popoverview (dialog) without an arrow, which works fine. The only problem is, that the dialog is shown in the top left (IPad). I would li

Answer 1

Another way for Swift 3 (Xcode 8, iOS 9) is this:

Called from somewhere:

self.performSegue(withIdentifier: "showPopupSegue", sender: yourButton)

Function that gets called before segue gets fired:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if let popoverPresentationController = segue.destination.popoverPresentationController {
        let controller = popoverPresentationController
        controller.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)
        controller.sourceView = self.view
        controller.sourceRect = CGRect(x: UIScreen.main.bounds.width * 0.5 - 200, y: UIScreen.main.bounds.height * 0.5 - 100, width: 400, height: 200)
        segue.destination.preferredContentSize=CGSize(width: 400, height: 200)
    }
}

Remember to set the storyboard segue's Kind attribute to "Present as Popover" and Anchor attribute to any view in your previous view controller.