final class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        let button = UIButton(type: .system)
        button.setTitle("Show Settings", for: .normal)
        button.addAction(UIAction() { _ in
            self.present(SettingsViewController(), animated: true)
        }, for: .touchUpInside)
        button.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(button)
        NSLayoutConstraint.activate([
            button.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            button.centerYAnchor.constraint(equalTo: view.centerYAnchor)
        ])
    }
}

private final class SettingsViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        let host = UIHostingController(rootView: SettingsView().ignoresSafeArea(.all))
        addChild(host)
        host.view.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(host.view)
        NSLayoutConstraint.activate([
            host.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            host.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            host.view.topAnchor.constraint(equalTo: view.topAnchor),
            host.view.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        host.didMove(toParent: self)
    }
}

private struct SettingsView: View {
    var body: some View {
        NavigationStack {
            Form {
                ForEach(1..<25) { number in
                    NavigationLink("Setting \(number)") {
                        Text("Tap the back button and examine the scroll indicator.")
                            .navigationTitle("Detail")
                    }
                }
            }
            .scrollIndicatorsFlash(onAppear: true)
            .navigationTitle("Settings")
        }
    }
}