P. Pawluś P. Pawluś - 1 year ago 64
iOS Question

UIPresentationController is being presented after huge delay

This is how I present my custom


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)

I present my controller once I tap on
. It is presented very quickly only if I tap on cell twice. However, when I perform single tap, then it works as well but with huge delay (between 15-60 seconds).

What is the reason?
How to workaround it?

Answer Source

There is a known bug with didSelectRowAtIndexPath that occurred to me as well, and this is the workaround I used.

Try to do this inside your didSelectRowAtIndexPath:

dispatch_async(dispatch_get_main_queue(), {


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