Telerik School Academy Xamarin apps for iOS, Android & WinPhone

1. What is a Page in Xamarin? 2. Page Types  ContentPage  MasterDetailPage  CarouselPage  TabbedPge  NavigationPage 3. Navigation 2

 Represents cross-platform mobile app screens  Contains a single child  A Xamarin.Forms.Page represents:  Activity in Android  View Controller in iOS  Page in Windows Phone 3

 Android – AndroidActivity  iOS – UIApplicationDelegate  Windows Phone – PhoneApplicationPage Xamarin.Forms.Forms.Init(this, bundle); SetPage(App.GetMainPage()); 4 Xamarin.Forms.Forms.Init(); window = new UIWindow(UIScreen.MainScreen.Bounds); window.RootViewController = App.GetMainPage().CreateViewController();window.MakeKeyAndVisible(); Xamarin.Forms.Forms.Init(); Content = HelloXamarinFormsWorld.App.GetMainPage().ConvertPageToUIElement(this);

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 Displays a single View new ContentPage { Content = new Label { Text = "Hello, Forms!", VerticalOptions = LayoutOptions.CenterAndExpand, HorizontalOptions = LayoutOptions.CenterAndExpand, },}; 6

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 Manages two panes of information  Master – use to display a list of items  Detail – bind with selected item from Master  IsPresented – show Master or not new MasterDetailPage = { Master = new ContentPage() {... }, Detail = new ContentPage() {... }, }; 8

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 Allows swipe gesture navigation like gallery  Natural and familiar to Windows Phone  Acts like a ListView with ItemsSource var page = new CarouselPage(); page.Children.Add(new ContentPage()); page.ItemsSource = new ContentPage[]; 10

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 Allows navigation between pages, using tabs  List of items across the top and a detail area below var page = new CarouselPage(); page.ItemsSource = new ContentPage[]; Page.ItemTemplate = new DataTemplate(() =>{ return new Contentpage() {... }; }); 12

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 Manages the navigations of a stack of other pages  PushAsync – add a Page to the stack  PopAsync – remove the top Page from the stack  PopToRootAsync – remove all except root page var page = new NavigationPage(new ContentPage()); 14

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 Handled by the INavigation interface public class App { public static INavigation Navigation { get; set; } public static Page GetMainPage() { var homePage = new HomePage(); Navigation = homePage.Navigation; return new NavigationPage(homePage); }} 16 private async void ButtonNavigate_Clicked( object sender, EventArgs e) { await App.Navigation.PushAsync(new SecondPage()); }

1. What is a Page in Xamarin? 2. Page Types  ContentPage  MasterDetailPage  CarouselPage  TabbedPge  NavigationPage 3. Navigation 17

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