A RootNavigation page for a Mvvm in Xamarin.Forms

RootContainerPage.cs

public class RootContainerPage : MasterDetailPage, IRootNavigation
{
    ContentPage _menuPage;
    NavigationPage _contactNavPage, _quotesNavPage;

    public RootContainerPage ()
    {
        _contactNavPage = new NavigationPage (BasePageModel.ResolvePageModel<ContactsRootPageModel> (null));
        _quotesNavPage = new NavigationPage (BasePageModel.ResolvePageModel<QuotesRootPageModel> (null));
        Detail = _contactNavPage;

        _menuPage = new ContentPage ();
        _menuPage.Title = "Menu";
        var listView = new ListView();

        listView.ItemsSource = new string[] { "Contacts", "Quotes" };

        listView.ItemSelected += (sender, args) =>
        {
            if ((string)args.SelectedItem == "Contacts")
            	Detail = _contactNavPage;
            if ((string)args.SelectedItem == "Quotes")
            	Detail = _quotesNavPage;

            IsPresented = false;
        };

        _menuPage.Content = listView;
        Master = new NavigationPage(_menuPage) { Title = "Menu" };
    }

    public void PushPage (Page page, BasePageModel model)
    {
        ((NavigationPage)Detail).PushAsync (page);
    }

    public void PopPage ()
    {
        ((NavigationPage)Detail).PopAsync ();
    }
}