interactivePopGestureRecognizer corrupts navigation stack on root view controller

Question

In my UINavigationController I added custom back buttons with the side effect that it is not possible anymore to swipe left to right to pop the view controller and

Answer 1

Implement UINavigationControllerDelegate for your navigation controller and enable/disable the gesture recognizer there.

// Fix bug when pop gesture is enabled for the root controller
func navigationController(navigationController: UINavigationController, didShowViewController viewController: UIViewController, animated: Bool) {
    self.interactivePopGestureRecognizer?.enabled = self.viewControllers.count > 1
}

Keeping the code independent from the pushed view controllers.