Navigation pop view when swipe right like Instagram iPhone app.How i achieve this?

Question

I want to pop a view when swipe right on screen or it\'s work like back button of navigation bar.

I am using:

self.navigationController.interactivePo         


        

Answer 1

There really is no need to roll your own solution for this, sub-classing UINavigationController and referencing the built-in gesture works just fine as explained here.

The same solution in Swift:

public final class MyNavigationController: UINavigationController {

  public override func viewDidLoad() {
    super.viewDidLoad()


    self.view.addGestureRecognizer(self.fullScreenPanGestureRecognizer)
  }

  private lazy var fullScreenPanGestureRecognizer: UIPanGestureRecognizer = {
    let gestureRecognizer = UIPanGestureRecognizer()

    if let cachedInteractionController = self.value(forKey: "_cachedInteractionController") as? NSObject {
      let string = "handleNavigationTransition:"
      let selector = Selector(string)
      if cachedInteractionController.responds(to: selector) {
        gestureRecognizer.addTarget(cachedInteractionController, action: selector)
      }
    }

    return gestureRecognizer
  }()
}

If you do this, also implement the following UINavigationControllerDelegate function to avoid strange behaviour at the root view controller:

public func navigationController(_: UINavigationController,
                                 didShow _: UIViewController, animated _: Bool) {
  self.fullScreenPanGestureRecognizer.isEnabled = self.viewControllers.count > 1
}