Swipe to go back only works on edge of screen?

Question

My swipe to go back feature works but only works on the edge of the screen. How can I have it work from anywhere on the screen?

Answer 1

Apple says here :

interactivePopGestureRecognizer

The gesture recognizer responsible for popping the top view controller off the navigation stack. (read-only)

@property(nonatomic, readonly) UIGestureRecognizer *interactivePopGestureRecognizer

The navigation controller installs this gesture recognizer on its view and uses it to pop the topmost view controller off the navigation stack. You can use this property to retrieve the gesture recognizer and tie it to the behavior of other gesture recognizers in your user interface. When tying your gesture recognizers together, make sure they recognize their gestures simultaneously to ensure that your gesture recognizers are given a chance to handle the event.

So SloppySwiper library customise the UIPanGestureRecognizer.

Check out the library SloppySwiper, which achieves this by using UIPanGestureRecognizer and by recreating the default animation.

SloppySwiper:- UINavigationController delegate that allows swipe back gesture to be started from anywhere on the screen like instagram.

Usage of this library can be found here.

Cocoapods:- pod "SloppySwiper"

I test this library on ios7 and above. It works like a charm.

Answer 2

Create a pan gesture recogniser and move the interactive pop gesture recogniser's targets across.

Add your recogniser to the pushed view controller's viewDidLoad and voila!

let popGestureRecognizer = self.navigationController!.interactivePopGestureRecognizer!
if let targets = popGestureRecognizer.value(forKey: "targets") as? NSMutableArray {
  let gestureRecognizer = UIPanGestureRecognizer()
  gestureRecognizer.setValue(targets, forKey: "targets")
  self.view.addGestureRecognizer(gestureRecognizer)
}

Answer 3

Swipe to go back is default behavior of pushed/showed view controllers. It works from left edge of the screen (by default). If you want to swipe back from any part of the screen, you should add UISwipeGestureRecognizer to your view:
let swipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: "didSwipe:") self.view.addGestureRecognizer(swipeGestureRecognizer)