How can I pop specific View Controller in Swift

Question

I used the Objective-C code below to pop a specific ViewController.

for (UIViewController *controller in self.navigationController.         


        

Answer 1

Try following code:

for controller in self.navigationController!.viewControllers as Array {
    if controller.isKind(of: ViewController.self) {
        self.navigationController!.popToViewController(controller, animated: true)
        break
    }
}

Answer 2

Swift 5 Answer of @PabloR is Here :

extension UINavigationController {

   func backToViewController(vc: Any) {
      // iterate to find the type of vc
      for element in viewControllers as Array {
        if "\(type(of: element)).Type" == "\(type(of: vc))" {
            self.popToViewController(element, animated: true)
            break
         }
      }
   }

}

Usage :

self.navigationController?.backToViewController(vc: TaskListViewController.self)

Answer 3

I prefer a "real generic" and more functional approach.

So I came up with following UINavigationController extension functions. You can also use the first function, for anything else, where you just need to access a specific VC in the navigation stack.

---

Extensions

extension UINavigationController {
    func getViewController<T: UIViewController>(of type: T.Type) -> UIViewController? {
        return self.viewControllers.first(where: { $0 is T })
    }

    func popToViewController<T: UIViewController>(of type: T.Type, animated: Bool) {
        guard let viewController = self.getViewController(of: type) else { return }
        self.popToViewController(viewController, animated: animated)
    }
}

Usage

self.navigationController?.popToViewController(of: YourViewController.self, animated: true)

---

This should work at least in Swift 4 and 5.

Answer 4

Find your view controller from navigation stack and pop to that view controller if it exists

for vc in self.navigationController!.viewControllers {
    if let myViewCont = vc as? VCName 
    {
        self.navigationController?.popToViewController(myViewCont, animated: true)
    }
}

Answer 5

Please use this below code for Swift 3.0:

 let viewControllers: [UIViewController] = self.navigationController!.viewControllers as [UIViewController];

for aViewController:UIViewController in viewControllers {
            if aViewController.isKind(of: YourViewController.self) {
                _ = self.navigationController?.popToViewController(aViewController, animated: true)
            }
        }

Answer 6

Swift 4.0

for controller in self.navigationController!.viewControllers as Array {
        if controller.isKind(of: DashboardVC.self) {
            _ =  self.navigationController!.popToViewController(controller, animated: true)
            break
        }
    }

This is working Perfect.