Breaks "Swipe right to return" functionality

[iantfang]

Hi,
I'm using navigationController.push(EZSwipeController) to push a new EZSwipeController into navigation stack, but it seems to break iOS's swipe right to return.

[Esqarrouth]

That should be disabled somewhere in the code.

[joshoconnor89]

func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
    return true
}

Place this in your VC which contains your EZSwipeVC and it should work.

I also added the following to prevent the SwipeVC from bouncing horizontally when it is on the first or last page index, not sure if this helps:

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    
    for someview in self.pageViewController.view.subviews {
        if someview is UIScrollView {
            let scrollview = someview as! UIScrollView
            scrollview.delegate = self
        }
    }
}

extension TaskViewSwipeVC: UIScrollViewDelegate {

    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        if self.currentVCIndex == 0 && (scrollView.contentOffset.x < scrollView.bounds.size.width) {
            scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
        } else if self.currentVCIndex == self.stackVC.count - 1 && (scrollView.contentOffset.x > scrollView.bounds.size.width) {
            scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
        }
    }

    func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
        if self.currentVCIndex == 0 && (scrollView.contentOffset.x < scrollView.bounds.size.width) {
            scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
        } else if self.currentVCIndex == self.stackVC.count - 1 && (scrollView.contentOffset.x > scrollView.bounds.size.width) {
            scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
        }
    }
}

[joshoconnor89]

This solution above works, but there is one more thing you have to do if you are using a UINavigationController. All you have to do is subclass the UINavigationController and use this custom class as your navigation controller.

`
class CustomNavigationController: UINavigationController, UIGestureRecognizerDelegate, UINavigationControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
        self.delegate = self
        interactivePopGestureRecognizer?.delegate = self
    }

    func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
       if responds(to: #selector(getter: self.interactivePopGestureRecognizer)) {
            if viewControllers.count > 1 {
                interactivePopGestureRecognizer?.isEnabled = true
            }
            else {
                interactivePopGestureRecognizer?.isEnabled = false
            }
        }
    }
}

`

Otherwise, you may encounter freezing issues like I did, seen here: https://stackoverflow.com/questions/36503224/ios-app-freezes-on-pushviewcontroller