Dismiss UIViewRepresentable using onChange method is Not working - swiftui

Question

I have a UIViewRepresentable and need to dismiss when some value has changed.I used .onChange method and it is not working. But onChange method called successfully.
Main View
class ViewModel:ObservableObject {
#Published var urlHasChanged:Bool = false
#Published var isShowWebView:Bool = false
}
struct MainView : View {
#ObservedObject var viewModel = ViewModel()
#Environment(\.presentationMode) var presentationMode
var body: some View {
NavigationView {
VStack {
Button {
viewModel.isShowWebView = true
} label: {
Text("show web view")
}
.background(NavigationLink( destination:
WebView(viewModel: viewModel)
.onChange(of: viewModel.urlHasChanged, perform: { newValue in
print("called")
self.presentationMode.wrappedValue.dismiss()
})
,isActive: $viewModel.isShowWebView, label: {
EmptyView()
}).opacity(0))
}
}
}
}
UIViewRepresentable
struct WebView: UIViewRepresentable {
var viewModel : ViewModel
func makeCoordinator() -> Coordinator {
return Coordinator()
}
func makeUIView(context: Context) -> WKWebView {
let webView = WKWebView()
context.coordinator.viewModel = viewModel
webView.navigationDelegate = context.coordinator
webView.load(URLRequest(url: URL(string: "https://www.google.com/")!))
return webView
}
func updateUIView(_ webView: WKWebView, context: Context) {
let request = URLRequest(url: URL(string: "https://www.google.com/")!)
webView.load(request)
}
class Coordinator : NSObject, WKNavigationDelegate {
var viewModel : ViewModel?
func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
//print("webview url \(webView.url)")
}
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: #escaping (WKNavigationActionPolicy) -> Void) {
if let host = navigationAction.request.url?.absoluteString{
if host.contains("google.com") {
decisionHandler(.allow)
return
}else{
viewModel?.urlHasChanged = true
decisionHandler(.cancel)
return
}
}else{
decisionHandler(.cancel)
}
}
}
}

Answer 1

It is not that presentation, instead turn activating flag back, like
.onChange(of: viewModel.urlHasChanged, perform: { newValue in
print("called")
viewModel.isShowWebView = false // << here !!
})