Xamarin.Forms é um framework criado para aumentar o compartilhamento de código em aplicativos móveis até na camada de apresentação. Porém, Xamarin.Forms é muito mais que isso, com diversos recursos e customizações que o tornam um framework poderosíssimo para a construção de aplicativos para Android, iOS, Universal Windows Platform e muitas outras plataformas. Veja as novidades das últimas versões do Xamarin.Forms e o que mais está por vir. Quem quiser ver a versão completa com animações e os vídeos funcionando, usem essa versão: https://1drv.ms/p/s!ApS6V8N1Tr5rh-lCPOm9qwkK6R1u9Q

3. https://www.myget.org/F/xamarinforms-ci/api/v2

5. Big Things

6. https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/data-binding/compiled-bindings/
[assembly: XamlCompilation (XamlCompilationOptions.Compile)]
Namespace MyApp { ….
<ListView x:Name="colorListView"
Grid.Row="0"
ItemsSource="{x:Static local:NamedColor.All}"
RowHeight="40">
<ListView.ItemTemplate>
<DataTemplate x:DataType="{x:Type local:NamedColor}"
<ViewCell>
<StackLayout Orientation="Horizontal">
<BoxView Color="{Binding Color}"
HeightRequest="32"
WidthRequest="32"
VerticalOptions="Center" />
Perf

7. xmlns:android="clr-namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly=Xamarin.Forms.Core"
android:ListView.IsFastScrollEnabled="true"
Perf

8. <Button />
AppCompatButton AppCompatButton
Button, Image, Label
Perf

10. ContentPage 2
3
4
5
6
7
<StackLayout
Spacing="0"
CompressedLayout.IsHeadless="true"
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<Grid
CompressedLayout.IsHeadless="true”>
...
</Grid>
...
</StackLayout>
Perf

11. Uncompressed
130 Views
Compressed
111 Views
Compressed + Fast Renderers
70 Views

12. Xamarin.Forms
Shared C# Logic
Windows C#Android C#iOS C#
Xamarin.Forms Supported Features
• XAML Compilation
• Bindings
• MessagingCenter
• DependencyService
• Create
• UIViewController
• Activity
• Fragment
• FrameworkElement
Perf

13. CreateViewController()

16. https://blog.xamarin.com/adaptive-mobile-designs-with-flexlayout/

17. • Não

19. http://github.com/davidortinau/Flexibility

21. http://github.com/microsoft/ConferenceVision

22. Little Things

23. -
-
-
-
-
-
-
-
-
-
-
-
-
-
Project Board

25. https://blog.xamarin.com/beginners-guide-
contributing-xamarin-forms/
https://blog.xamarin.com/debugging-xamarin-
forms/

26. 1
2
3
4
5
6
7
8
9
<TabbedPage …
BarBackgroundColor="#F1F1F1"
xmlns:android="clr-
namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly
=Xamarin.Forms.Core"
android:TabbedPage.ToolbarPlacement="Bottom"
android:TabbedPage.BarItemColor="#666666"
android:TabbedPage.BarSelectedItemColor="Black">

28. <Label>
<Label.FormattedText>
<FormattedString>
<Span Text="Welcome " />
<Span Text="{Binding YourName}" FontAttributes="Bold"/>
<Span Text=" to the Xamarin.Forms 3.1.0 playground!" />
</FormattedString>
</Label.FormattedText>
</Label>

29. <Label>
<Label.FormattedText>
<FormattedString>
<Span Text="Sometimes you want a span to be tappable, like a phone number or URL: " />
<Span Text="{Binding Url, Mode=OneWay}" TextColor="Blue">
<Span.GestureRecognizers>
<TapGestureRecognizer
Command="{Binding TapCommand, Mode=OneWay}"
CommandParameter="https://www.xamarin.com"/>
</Span.GestureRecognizers>
</Span>
<Span Text=". Tap it to launch a browser."/>
</FormattedString>
</Label.FormattedText>
</Label>

31. <BoxView
FlexLayout.AlignSelf="Center"
WidthRequest="100"
HeightRequest="100"
BackgroundColor="{OnPlatform Android=#333333, iOS=#CC3300, Default=Green}" />

33. Next Things

35. • ActivityIndicator, BoxView, ProgressBar, Switch
• color
• Grid
• row-gap
• column-gap
• VisualElement
• transform
• transform-origin
• Label
• vertical-align

37. Perf

42. • Performant por padrão
• Mesmo design no iOS e
Android através do
MaterialShell
• Design por plataforma via
Shell
• Descreva facilmente seu app
em um arquivo
• Flyout e Tabbed navigation
• URL routed navigation, deep
linking
• Back navigation
• Busca integrada
• Snackbar
• Bottom Sheet
• Floating Action Button
• Left Bar Button
• Screen segues
• Screen transitions
• Mais tudo que você já
consegue fazer com
Xamarin.Forms
Perf

44. Supported Navigation UI Patterns In Shell
1 Page Bottom Tabs Bottom & Top Tabs FlyoutTop Tabs
<ShellItem Route="main" Title="Home">
<ShellContent Title="Home“ ContentTemplate="{DataTemplate local:MainPage}" />
<ShellSection Title="Notifications">
<ShellContent Title="Recent" ContentTemplate="{DataTemplate local:RecentActivityPage}" />
<ShellContent Title=“Alert Settings" ContentTemplate="{DataTemplate local:AlertSettingsPage}" />
</ShellSection>
</ShellItem>
<Shell FlyoutBehavior=“Disabled” …>
<ShellContent>
<local:MainPage />
</ShellContent>
</Shell>
<ShellItem>
<ShellContent Title="Home“ ContentTemplate="{DataTemplate local:MainPage}" />
<ShellContent Title=“Notifications“ ContentTemplate="{DataTemplate local:NotificationsPage}" />
</ShellItem>
<ShellItem Route="main" Title="Home">
<ShellSection>
<ShellContent Title=“Page 1" ContentTemplate="{DataTemplate local:FirstPage}" />
<ShellContent Title=“Page 2" ContentTemplate="{DataTemplate local:SecondPage}" />
</ShellSection>
</ShellItem>
<Shell.FlyoutHeader>
<ContentView HeightRequest=“300”>
<Label Text=“Hello XamStore” …/>
</ContentView>
</Shell.FlyoutHeader>
<ShellItem Route="main" Title="Home">
<ShellContent ContentTemplate=“{DataTemplate local:MainPage}” />
</ShellItem>
<ShellItem Route=“notifications” Title=“Notifications”>
<ShellContent ContentTemplate=“{DataTemplate local:NotificationsPage}” />
</ShellItem>

45. Precisa da sua opinião e seu voto
https://github.com/xamarin/Xamarin.Forms/labels/a%2F
gestures

48. Obrigado!