pop 2 view controllers swift code example

Example 1: swift pop to specific view controller

let viewControllers: [UIViewController] = self.navigationController!.viewControllers
for aViewController in viewControllers {
    if aViewController is YourViewController {
        self.navigationController!.popToViewController(aViewController, animated: true)
    }
}

Example 2: swift pop view controller

navigationController?.popViewController(animated: true)