Changing background of NavigationView's bar when presented modally - swiftui

Question

I can't figure out a way to set the navigation bar to be opaque black...
All the related hacks don't seem to work if the navigation view is presented modally...
This is how I present my webView:
Button(action: { self.showFAQ.toggle() }) {
Text("Frequently Asked Questions").foregroundColor(.orange)
}.sheet(isPresented: $showFAQ) {
WebView(isPresented: self.$showFAQ, url: self.faqURL)
}
This is my webView wrapper:
struct WebView: View {
let url: URL
#Binding var isPresented: Bool
var body: some View {
NavigationView {
WebViewRepresentable(url: url)
.navigationBarTitle("", displayMode: .inline)
.navigationBarItems(trailing: Button(action: {
self.isPresented.toggle()
}, label: { Text("Done") } ))
}
}
init(isPresented: Binding<Bool>, url: URL) {
self.url = url
self._isPresented = isPresented
let appearance = UINavigationBarAppearance()
appearance.configureWithOpaqueBackground()
}
struct WebViewRepresentable: UIViewRepresentable {
let url: URL
// Creates a UIKit view to be presented.
func makeUIView(context: Context) -> WKWebView {
let webView = WKWebView()
webView.isOpaque = false
webView.backgroundColor = .systemBackground
return webView
}
// Updates the presented UIKit view (and its coordinator)
// to the latest configuration.
func updateUIView(_ uiView: WKWebView, context: Context) {
let req = URLRequest(url: url)
uiView.load(req)
}
}
}
UINavigationBarAppearance() is ignored... UINavigationBar.appearance() is also ignored...

Answer 1

A possible solution is to avoid using a NavigationView and simply add a Done button to achieve the same result:
struct WebView: View {
let url: URL
#Binding var isPresented: Bool
var body: some View {
VStack {
HStack {
Spacer()
Button(action: {
self.isPresented.toggle()
}) {
Text("Done").padding(.all, 20)
}
}
WebViewRepresentable(url: url)
}.background(Color.black.opacity(1.0))
.edgesIgnoringSafeArea(.all)
}
init(isPresented: Binding<Bool>, url: URL) {
self.url = url
self._isPresented = isPresented
let appearance = UINavigationBarAppearance()
appearance.configureWithOpaqueBackground()
}
struct WebViewRepresentable: UIViewRepresentable {
let url: URL
// Creates a UIKit view to be presented.
func makeUIView(context: Context) -> WKWebView {
let webView = WKWebView()
webView.isOpaque = false
webView.backgroundColor = .systemBackground
return webView
}
// Updates the presented UIKit view (and its coordinator)
// to the latest configuration.
func updateUIView(_ uiView: WKWebView, context: Context) {
let req = URLRequest(url: url)
uiView.load(req)
}
}
}