Fix the back swipe gesture not working correctly in SwiftUI. https://stackoverflow.com/a/58345554/3393964

Navigation.swift

/// Fixed swipe gesture NavigationLink
struct NavigationLink<Destination: View, Label:View>: View {
    var destination: Destination
    var label: () -> Label
    
    public init(destination: Destination, @ViewBuilder label: @escaping () -> Label) {
        self.destination = destination
        self.label = label
    }
    
    /// If this crashes, make sure you wrapped the NavigationLink in a NavigationView
    @EnvironmentObject private var nvc: NavigationViewUINavigationController
    
    var body: some View {
        Button(action: {
            let rootView = self.destination.environmentObject(self.nvc)
            let hosted = UIHostingController(rootView: rootView)
            self.nvc.pushViewController(hosted, animated: true)
        }, label: label)
    }
}

/// Fixed swipe gesture NavigationView
struct NavigationView<Content: View>: UIViewControllerRepresentable {
    
    var content: () -> Content
    
    init(@ViewBuilder content: @escaping () -> Content) {
        self.content = content
    }
    
    func makeUIViewController(context: Context) -> UINavigationController {
        let nvc = NavigationViewUINavigationController()
        let host = UIHostingController(rootView: content().environmentObject(nvc))
        nvc.viewControllers = [host]
        return nvc
    }
    
    func updateUIViewController(_ uiViewController: UINavigationController, context: Context) {}
}

/// Fileprivate type to not expose the navigation controller to all views
fileprivate class NavigationViewUINavigationController: UINavigationController, ObservableObject {}

zExample.swift

struct ContentView: View {
    @State var isPresented = false
    
    var body: some View {
        NavigationView {
            VStack(alignment: .center, spacing: 30) {
                NavigationLink(destination: Text("Detail"), label: {
                    Text("Show detail")
                })
                Button(action: {
                    self.isPresented.toggle()
                }, label: {
                    Text("Show modal")
                })
            }
            .navigationBarTitle("SwiftUI")
        }
        .edgesIgnoringSafeArea(.top)
        .sheet(isPresented: $isPresented) {
            Modal()
        }
    }
}

struct Modal: View {
    @Environment(\.presentationMode) var presentationMode
    
    var body: some View {
        NavigationView {
            VStack(alignment: .center, spacing: 30) {
                NavigationLink(destination: Text("Detail"), label: {
                    Text("Show detail")
                })
                Button(action: {
                    self.presentationMode.wrappedValue.dismiss()
                }, label: {
                    Text("Dismiss modal")
                })
            }
            .navigationBarTitle("Modal")
        }
    }
}

Hello. Thx for solution, but:
...

@State var cartCount: Int = 0
...
.navigationBarItems(
trailing: (
NavigationLink(destination: CartView()) {
Image(systemName: "bag.fill")
.imageScale(.large)
.foregroundColor(Color.init(hex: "858ac1"))
}
.overlay(
Text(self.cartCount.description)
.foregroundColor(Color.white)
.font(.system(size: 10))
.frame(width: 15.0, height: 15.0)
.background(Color.init(hex: "e80063"))
.cornerRadius(15), alignment: .topTrailing)
)
)
...

if i change "cartCount", view didn't change...

And without my code it works?

And without my code it works?

Yes

Could you please edit your comment to correct the code block formatting, it’s hard to read on mobile.

This code works without overriding NavigationLink, NavigationView is enough. @Amzd