Swipe to pop View Controller in Swift - swift

Question

I'm using the Slide menu controller pod in my project and have a little problem. When there are controllers in navigation stack and I want to swipe left, the burger menu appears instead of popping the contorller. How could that be changed? Could someone please guide me?
So I know it's a pretty basic functionality that you get for free, but it's overridden here.
I tried switching off the pan gesture for the slide menu, but it powered off the whole mechanism.
SlideMenuOptions.panGesturesEnabled = false
I also found the handleLeftPanGesture(_ panGesture: UIPanGestureRecognizer) method, which looks as follows:
open func isTargetViewController() -> Bool {
// Function to determine the target ViewController
// Please to override it if necessary
guard let navController = navigationController else { return true }
return navController.viewControllers.isEmpty
}
#objc func handleLeftPanGesture(_ panGesture: UIPanGestureRecognizer) {
if !isTargetViewController() {
navigationController?.popViewController(animated: true)
}
if isRightOpen() {
return
}
switch panGesture.state {
case UIGestureRecognizerState.began:
if LeftPanState.lastState != .ended && LeftPanState.lastState != .cancelled && LeftPanState.lastState != .failed {
return
}
if isLeftHidden() {
self.delegate?.leftWillOpen?()
} else {
self.delegate?.leftWillClose?()
}
LeftPanState.frameAtStartOfPan = leftContainerView.frame
LeftPanState.startPointOfPan = panGesture.location(in: view)
LeftPanState.wasOpenAtStartOfPan = isLeftOpen()
LeftPanState.wasHiddenAtStartOfPan = isLeftHidden()
leftViewController?.beginAppearanceTransition(LeftPanState.wasHiddenAtStartOfPan, animated: true)
addShadowToView(leftContainerView)
setOpenWindowLevel()
case UIGestureRecognizerState.changed:
if LeftPanState.lastState != .began && LeftPanState.lastState != .changed {
return
}
let translation: CGPoint = panGesture.translation(in: panGesture.view!)
leftContainerView.frame = applyLeftTranslation(translation, toFrame: LeftPanState.frameAtStartOfPan)
applyLeftOpacity()
applyLeftContentViewScale()
case UIGestureRecognizerState.ended, UIGestureRecognizerState.cancelled:
if LeftPanState.lastState != .changed {
setCloseWindowLevel()
return
}
let velocity:CGPoint = panGesture.velocity(in: panGesture.view)
let panInfo: PanInfo = panLeftResultInfoForVelocity(velocity)
if panInfo.action == .open {
if !LeftPanState.wasHiddenAtStartOfPan {
leftViewController?.beginAppearanceTransition(true, animated: true)
}
openLeftWithVelocity(panInfo.velocity)
track(.leftFlickOpen)
} else {
if LeftPanState.wasHiddenAtStartOfPan {
leftViewController?.beginAppearanceTransition(false, animated: true)
}
closeLeftWithVelocity(panInfo.velocity)
setCloseWindowLevel()
track(.leftFlickClose)
}
case UIGestureRecognizerState.failed, UIGestureRecognizerState.possible:
break
}
LeftPanState.lastState = panGesture.state
}
And I'm trying to count the navigaion ViewControllers, but it didn't help.

Answer 1

Actaully I found the solution which might help someone.
You need to add this to ViewController and conform to UIGestureRecognizerDelegate protocol
override func viewDidAppear(_ animated: Bool) {
slideMenuController()?.removeLeftGestures()
navigationController?.interactivePopGestureRecognizer?.delegate = self
}
extension AdditionalInformationController: UIGestureRecognizerDelegate {
func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
if gestureRecognizer.isEqual(navigationController?.interactivePopGestureRecognizer) {
navigationController?.popViewController(animated: true)
}
return false
}
}