Pop to root view controller from modal

Question

I am trying to pop to the root view controller using the following code:

self.navigationController!.popToRootViewController(animated: true)

This usually works, but I get an error when trying to use this code when the current view is a modal. How do I go about popping back to the root view controller in this situation?

Thanks in advance.

Answer 1

You can check that current controller is presented, if it is presented then dismiss it and the go to the rootViewController other wise go directly the rootViewController

if self.presentingViewController != nil {
    self.dismiss(animated: false, completion: { 
       self.navigationController!.popToRootViewController(animated: true)
    })
}
else {
    self.navigationController!.popToRootViewController(animated: true)
}

Answer 2

Result:

Code

Let's say that your Modal View has the below ViewController associated.

Basically first to hide your View that is shown as a Modal, you use dismiss(animated: Bool) method from your ViewController instance.

And for the Views presented as Pushed, you could use from your navigationController property these methods for instance: popToRootViewController(animated: Bool), popViewController(animated:Bool)

class ModalViewController: UIViewController {
  
  @IBAction func backButtonTouched(_ sender: AnyObject) {
    let navigationController = self.presentingViewController as? UINavigationController
    
    self.dismiss(animated: true) {
      let _ = navigationController?.popToRootViewController(animated: true)
    }
  }
  
}