Pop a navigation controller - ios

Question

I have two views, V1 and V2. I want to "present" V2 when the add button is pressed on V1, and "pop" V2 off when the stop button is pressed, so that the original V1 is the top of the stack.
From what I have read, I need a separate view controller for V2. From the limited information I could find, I need V1's view controller to conform to V2's protocol, V2delegate. This is what I have, but it is not working:
ViewController1 with V1
class HomeController: UICollectionViewController, UICollectionViewDelegateFlowLayout, FormViewControllerDelegate {
let form = FormViewController()
func addTapped() {
form.delegate = self
let nav = UINavigationController(rootViewController: form)
navigationController?.present(nav, animated: true)
}
func popForm() {
navigationController?.popViewController(animated: true)
navigationController?.popToViewController(self, animated: true)
print("popped")
}
}
ViewController2 with V2
class FormViewController: UIViewController {
var delegate: FormViewControllerDelegate?
func stopTapped() {
print("pop it")
delegate?.popForm()
}
}
protocol FormViewControllerDelegate {
func popForm()
}
What am I doing wrong here?

Answer 1

In your VC2, Change to use this code
func stopTapped() {
print("pop it")
self.dismiss(animated: true, completion: nil)
}

Answer 2

Use this in ViewController1 to present FormViewController
func addTapped() {
let nav = UINavigationController(rootViewController: form)
self.present(nav, animated: true)
}
Within FormViewController when want to dismiss use this
func stopTapped() {
self.dismiss(animated: true)
}

Answer 3

You have presented the ViewController not pushed the ViewController, so what you need is to dismiss the Controller instead of pop the controller from navigation stack.
func popForm() {
navigationController?.dismiss(animated: true)
print("popped")
}
Better if you renamed the method name to dissmissForm instead of popForm.

Answer 4

You need to dismiss VC2 instead of pop. in self class as below :
func stopTapped() {
self.dismiss(animated: true, completion: { _ in })
}

Answer 5

When you are presenting any viewcontroller then you must use dismissViewController method to remove presented view controller. popViewController is used when you hqve push any viewcontroller.

Answer 6

When you use present then you have to use dismiss to remove that currently presented class in stack, when you dismiss it, your just next previous class will be in top of the stack. Thats all.. hope, it may helps you.

Answer 7

for pop a UIViewController you nee to push and not present. If you need to present a UIViewVontroller then on click on "X" you need to dismiss that viewController.
For push view controller
func addTapped() {
self.navigationController?.pushViewController(from, animated: true)
}
func stopTapped() {
self.navigationController?.popViewController(animated: true)
}
For presenting a view controller
func addTapped() {
self.present(from, animated: true, completion: nil)
}
func stopTapped() {
self.dismiss(animated: true, completion: nil)
}
You don't need to code for any protocol to push or present a UIViewController