How to enable back/left swipe gesture in UINavigationController after setting leftBarButtonItem?

Question

I got the opposite issue from here. By default in iOS7, back swipe gesture of UINavigationController\'s stack could pop the presented ViewCon

Answer 1

I did not need to add gestureRecognizer functions for it. It was enough for me to add following code blocks at viewDidLoad:

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationController?.interactivePopGestureRecognizer?.delegate = nil
    self.navigationController?.interactivePopGestureRecognizer?.isEnabled = true
}

Answer 2

it works for me Swift 3:

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

and in ViewDidLoad:

    self.navigationController?.interactivePopGestureRecognizer?.delegate = self
    self.navigationController?.interactivePopGestureRecognizer?.isEnabled = true