Can't dismiss `NYTPhotosViewController`.

[lynn87]

System Version:

iOS 11.2

Reproduce Steps:

• View photo with NYTPhotosViewController
• Do pan gesture a little(must a little, this can make didPanWithGestureRecognizer method called only twice, UIGestureRecognizerStateBegan and UIGestureRecognizerStateEnded)
• Dismiss NYTPhotosViewController with close button failed

Reason

The method startInteractiveTransition in NYTPhotoDismissalInteractionController called later than finishPanWithPanGestureRecognizer. The property transitionContext is nil when execute code [self.animator animateTransition:self.transitionContext].

[fysteven]

+1

[chadpod]

Seeing same issue, startInteractiveTransition: isn't called until after the first couple of didPanWithPanGestureRecognizer:viewToPan:anchorPoint: calls so transitionContext is nil in didPanWithPanGestureRecognizer:viewToPan:anchorPoint: in those cases. Happens for me with a quick flick to dismiss. Image just ends up stuck. Seems to be internal to iOS as startInteractiveTransition: is called by the system in response to dismissViewControllerAnimated:completion:. The approach used in the the pan gesture handler seems to be what all the examples are like ... so not sure why the delay in startInteractiveTransition: being called. Any insight would be appreciated.

[Xendrez]

Is there a workaround or a fix for this?

[Xendrez]

I found my answer in example code:

func photosViewControllerDidDismiss(_ photosViewController: NYTPhotosViewController) {
        photoViewerCoordinator = nil
    }

[CJaeson]

Is there any good solution?