How Pop back to specific ViewController(UIKit) from SwiftUI view-CodePudding

I have three controllers and one swiftUI view, below is the flow

A Controller(RootController) -> B controller - > C controller -> SwiftUI view

I am doing some operation on the SwiftUI view based on the operation need to decide to whether pop back to C controller or B. Currently I am able pop back to C Controller and root controller, not sure how to jump to specific (in my case B controller)controller in SwiftUI

.navigationBarItems(leading:Button(action: {
            self.presentationMode.wrappedValue.dismiss()
        })

CodePudding user response：

You can make an extension for UINavigationController

extension UINavigationController {
  func popToViewController(ofClass: AnyClass, animated: Bool = true) {
    if let vc = viewControllers.last(where: { $0.isKind(of: ofClass) }) {
      popToViewController(vc, animated: animated)
    }
  }
}

and use it like this

 func goBack() {
        navigationController?.popToViewController(ofClass:  UIHostingController<SomeSwinftUIView>.self) // if this is a swuftUI view
}

 func goBack() {
    navigationController?.popToViewController(ofClass: SomeViewController.self)
    
    }

CodePudding user response：

@OhStack just import UIKit (Personally i'm using a router/coordinator for navigation, and there I include UIKit)

import UIKit
import SwiftUI

struct SwiftUIViewCoordinator {
     let navController: UINavigationController?
     
     func startView(navController: UINavigationController) {
           self.navController = navController
           let swiftUIView = SwifUIViewView(router: self)
           let hostingView = UIHostingController(rootView: swiftUIView)
           navigationController?.pushViewController(hostingView, animated: true)
     }

     func goBackToSomeView() {
        navigationController?.popToViewController(ofClass:  
        UIHostingController<SomeSwinftUIView>.self) 
      }
}