How to implement UIViewControllerTransitioningDelegate in UIStoryboardSegue?

Question

This is what I do now:

func presentOverlayController(controller: UIViewController) {

    controller.modalPresentationStyle = .Custom
    controller.transitioningDelegate = self

    presentViewController(controller, animated: true, completion: nil)
}

//MARK: - UIViewControllerTransitioningDelegate

public func presentationControllerForPresentedViewController(presented: UIViewController, presentingViewController presenting: UIViewController, sourceViewController source: UIViewController) -> UIPresentationController? {
    return OverlayPresentationController(presentedViewController: presented, presentingViewController: presenting)
}

It works pretty awesome. First I get the controller from storyboard using .instantiateViewControllerWithIdentifier:. Controller is presented the right way:

But the same result I need to achieve with my custom segue:

class OverlaySegue: UIStoryboardSegue, UIViewControllerTransitioningDelegate {

    override func perform() {

        destinationViewController.modalPresentationStyle = .Custom
        destinationViewController.transitioningDelegate = self
    }

    //MARK: - UIViewControllerTransitioningDelegate

    func presentationControllerForPresentedViewController(presented: UIViewController, presentingViewController presenting: UIViewController, sourceViewController source: UIViewController) -> UIPresentationController? {
        return OverlayPresentationController(presentedViewController: presented, presentingViewController: presenting)
    }
}

but it doesnt work. Why?

score 1 · Accepted Answer · answered Jul 28 '16 at 08:59

1

At the end of perform you need to call presentViewController(destinationViewController, animated: true, completion: nil).

answered Jul 28 '16 at 08:59

Viktor Simkó

2,607
16
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How to implement UIViewControllerTransitioningDelegate in UIStoryboardSegue?

1 Answers1