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.

score 33 · Accepted Answer · answered Oct 03 '16 at 12:13

33

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)
}

answered Oct 03 '16 at 12:13

Nirav D

71,513
12
161
183

4

Looks like the `self.navigationController!.popToRootViewController(animated: true)` in the completion handler may not be correct? Shouldn't you be using the `presentingViewController`'s navigation controller to pop to root? – Yuchen Apr 16 '18 at 14:45

score 16 · Answer 2 · edited Jun 20 '20 at 09:12

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)
    }
  }
  
}

score 3 · Answer 3 · answered Oct 03 '16 at 12:07

3

You have presented a ViewController, so you need to dismiss it.

To dismiss a ViewController in swift, use this:

self.dismiss(animated: true, completion: nil)

answered Oct 03 '16 at 12:07

KSR

1,699
15
22

CyberMew · Answer 4 · 2019-10-21T10:09:18.160

If you don't want the animations to happen, i.e. you want user to see the root view controller after the modal view is dismissed:

CATransaction.begin()
CATransaction.setCompletionBlock {
    self.dismiss(animated: true, completion: nil)
}
self.navigationController?.popViewController(animated: false)
CATransaction.commit()

Reference from: Completion block for popViewController

The above will work for popping a single view controller. If you need to pop multiple, popToRootViewController will not work (there is an unbalanced call due to animations).

In that case, use the following (manual) method to remove them:

guard let navigationController = self.navigationController else { return }
var navigationViewControllers = navigationController.viewControllers
navigationViewControllers.removeLast(navigationViewControllers.count - 1)
self.navigationController?.viewControllers = navigationViewControllers

score 0 · Answer 5 · edited May 23 '17 at 11:46

0

You can do something like this:

Objective-C:

[(UINavigationController *)self.presentingViewController popToRootViewControllerAnimated:NO];

[self dismissViewControllerAnimated:YES completion:nil];

Check answer here for reference:

ios: how to dismiss a modal view controller and then pop a pushed view controller

edited May 23 '17 at 11:46

Community

1
1

answered Oct 03 '16 at 11:58

Ronak Chaniyara

5,335
3
24
51

score 0 · Answer 6 · answered Oct 03 '16 at 12:02

0

How about use Notification?

your modal just post Notification

and your NavigationController receive then, pop to rootViewController

answered Oct 03 '16 at 12:02

Cruz

2,602
19
29

score 0 · Answer 7 · answered May 27 '22 at 16:30

I created a project with a custom navigation bar so that the root back button can be in the navigation bar. The green arrow goes back one View, while the blue x will pop back to the root view which is my case is the ContentView.

Here are my example views to show how it works.

struct ContentView: View {
    @EnvironmentObject private var globalObj: GlobalClass
    var body: some View {
        CustomNavView{
            VStack{
                RootCustomNavLink(destination: FirstView()
                .customNavigationTitle("Custom View").customNavigationBarReturnButtonHidden(true), label: {
                        Text("Navigate View One").buttonStyleBlue()
                    })
                }.customNavigationTitle("Home")
                    .customNavigationBarBackButtonHidden(true)
                    .customNavigationBarReturnButtonHidden(true)
            }
        }
    }
struct FirstView: View {
    var body: some View {
        Text("Hello, View One!")
        CustomNavLink(destination: LastView()
        .customNavigationTitle("Last View").customNavigationSubtitle("subtitle"), label: {
            Text("Go to Last View").buttonStyleGreen()
        })
    }
}

struct LastView: View {
    var body: some View {
        Text("Last View")
    }
}

Here is my GitHub repo that has the structs that I made to build this custom navigation view.

https://github.com/MicahKimel/CustomNavigationSwiftUI

Pop to root view controller from modal

7 Answers7

Result:

Code

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