UIHostingController and navigationController

Question

Default swift project with view controller embedded in navigationController and pushing to next UIHostingController.

How to call navigationController?.popViewController from SimpleView ?

ViewController:

@IBOutlet weak var button: UIButton?

override func viewDidLoad() {
    super.viewDidLoad()
    button?.addTarget(self,
                      action: #selector(showNewSwiftUIController),
                      for: .touchUpInside)
}

@objc func showNewSwiftUIController() {
    let vc = UIHostingController(rootView:SimpleView())
    navigationController?.pushViewController(vc, animated: true)
}

SwiftUI:

struct SimpleView: View {
    var body: some View {
        Text("SimpleView")
            .foregroundColor(.black)
    }
}

Answer 1

First. Have you tried?

@Environment(\.presentationMode) var presentationMode: Binding<PresentationMode> // reference

Then on your body call:

self.presentationMode.wrappedValue.dismiss()

If that does not work:

I will suggest you either pass the navigation controller as an optional variable into the View as a reference and access from there. Other option and maybe a healthier option is to pass a "callback" variable from the parent to the childView to dismiss the view (you need to save the Navigation as a variable to keep track)

Last option (Not recommended)

if var topController = UIApplication.shared.windows.first?.rootViewController {
        
        while let presentedViewController = topController.presentedViewController {
            topController = presentedViewController
        }
        topController.navigationController.popViewController(animated:true)

 }