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

Setting a custom back button disable the swipe back feature.

The best thing to do to keep it is to subclass UINavigationViewController and set itself as the interactivePopGestureRecognizer delegate; then you can return YES from gestureRecognizerShouldBegin to allow the swipe back.

For example, this is done in AHKNavigationController

And a Swift version here: https://stackoverflow.com/a/43433530/308315