public MainView()
        {
            MessagingCenter.Subscribe<FeedbackView> (this, "OpenInDetail", (sender) => {
                var fv = sender as FeedbackView;

                this.Detail = new NavigationPage(fv);
            });

            pages = new Dictionary<MenuType, NavigationPage>();

            this.BindingContext = new MenuViewModel();

            this.Master = master = new MasterView(ViewModel);

            this.IsGestureEnabled = false;

            var homeNav = new NavigationPage(master.PageSelection)
            {

            };

            this.Detail = homeNav;

            pages.Add(MenuType.Home, homeNav);

            master.PageSelectionChanged = (menuType) =>
            {
                NavigationPage newPage;

                if (pages.ContainsKey(menuType))
                {
                    newPage = pages[menuType];
                }
                else
                {
                    newPage = new NavigationPage(master.PageSelection)
                    {

                    };
                    pages.Add(menuType, newPage);
                }
                Detail = newPage;
                Detail.Title = master.PageSelection.Title;

                this.IsPresented = false;
            };
        }