What's New, Hot, & Awesome for Xamarin Developers!
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The document discusses the latest updates and features for Xamarin developers, including the Xamarin Developer Summit, new performance enhancements in Visual Studio, and the introduction of Xamarin Essentials for cross-platform functionalities. It highlights improvements in developer productivity such as faster app startup times, XAML hot reload, and streamlined project creation. Furthermore, it showcases the capabilities of .NET for building applications across various platforms, emphasizing the use of C# for native API access and high-performance development.
What's New, Hot, & Awesome for Xamarin Developers!
- 1. Seattle Mobile .NET Developers! • https://www.meetup.com/SeattleMobileDevelopers/
- 2. What’s New, Hot, & Awesome for Xamarin Developers @JamesMontemagno | jamont@microsoft.com
- 4. Xamarin Developer Summit • 2 Days • 2 Keynotes • 30+ Sessions • 300 Attendees • Live Streamed to YT • Videos on Demand https://youtube.com/c/XamarinDevelopers
- 5. .NET: Your platform for building anything Desktop Web Cloud Mobile Gaming IoT AI .NET
- 6. Shared C# Business Logic • Platform APIs • User Interface Xamarin App Architecture Shared C# codebase • 100% native API access • High performance .NET C# C# C#
- 8. Our proud tradition • Native-first • Anything you can do with Java, Objective-C, or Swift you can do in Visual Studio with C# or F# • Same-day releases for new platform capabilities • Make mobile development delightful
- 10. Developer Productivity Cross-Platform Everything 100% Native & Optimized
- 11. 100% Native & Optimized
- 13. Visual Studio 2019 16.3 Preview 2
- 14. Leaner Apps
- 16. Specific Languages Proper Resource Screen Densities Best Match ABIs arm64 en xxxhdpi fr Base Optimized APK (20-50% size reduction)
- 17. Absolutely no code changes made by you. Optimized APK (20-50% size reduction) Visual Studio 2019 16.3 Preview
- 19. Execution modes Xamarin.iOS does full Ahead Of Time (AOT) compilation to produce an ARM binary for Apple’s App Store. Xamarin.Android takes advantage of Just In Time (JIT) compilation on the Android device. ARM BINARY Runs natively .APPAOT .NET C# Bindings .APKCompile and Link .NET C# Bindings IL + JIT Runs natively AOT ?
- 20. Startup Tracing for Android
- 21. Startup Tracing
- 22. Startup Tracing
- 23. Startup Tracing for Android Available in ALL versions of Visual Studio 2019 16.2
- 27. aka.ms/xamarinessentials Flashlight Geolocation Preferences Device Info Device Display Info Secure Settings Accelerometer Battery Clipboard Compass Connectivity Share Email File SystemGeocoding Gyroscope Magnetometer Phone Dialer Screen Lock Sms Text to Speech Vibration Xamarin.Essentials Email Attachments Open Files Share File Detect Shake
- 31. .Forms
- 32. An open source mobile UI framework from Microsoft for building iOS, Android, & Windows apps with .NET from a single shared codebase.
- 36. Common Controls
- 37. YOU
- 38. The Little Things Entry/Editor - IsSpellCheckEnabled - MaxLength - DetectReadingOrderFromCo ntent (UWP) - Text prediction options - Autocapitalization - AutoResizable Editor - ButtonType for return button - Position and Color of caret - Placeholder color Label - Bindable Spans - Commandable Spans, Span Gestures - LineHeight SearchBar IsSpellCheckEnabled ImeOptions DesignModeEnabled Android Bottom Tabs WebView mixed content (Android) WebView evaluate JS Binding Mode OneTime ProgressBar colors Switch colors Slider colors Hide scroll bars Button AccessKey ListView - full width separators - SelectionMode Label MaxLines Entry Read-Only ImageButton PinsSource on Forms.Map WebView Zoom Controls (Android) TabbedPage Icons (UWP) Drop Shadows (iOS/UWP) App DI Container Hooks Button Padding Page TitleView BoxView rounded corners WKWebView for iOS CheckBox RelativeSource Binding Map ItemTemplate BindableLayout Bindable AutomationID UIModalPresentationStyle TabIndex Pending Label Padding Polylines RadioButton Entry ClearButtonMode CharacterSpacing VSM Target Label HTML CameraView MediaElement FAB …..
- 39. Visual & Material Design Renderers
- 40. Native Controls and the OS
- 41. Visual
- 42. Simplicity of Shell • Single Container • URI Routing • Templating
- 43. Flyout Made Simple <FlyoutItem Title="Browse" Icon="tab_feed.png"> <ShellContent ContentTemplate="{DataTemplate local:ItemsPage}" /> </FlyoutItem> <FlyoutItem Title="About" Icon="tab_about.png"> <ShellContent ContentTemplate="{DataTemplate local:AboutPage}" /> </FlyoutItem> <MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:d="http://xamarin.com/schemas/2014/forms/design" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" xmlns:views="clr-namespace:App6.Views" x:Class="App6.Views.MainPage"> <MasterDetailPage.Master> <views:MenuPage /> </MasterDetailPage.Master> <MasterDetailPage.Detail> <NavigationPage> <NavigationPage.Icon> <OnPlatform x:TypeArguments="FileImageSource"> <On Platform="iOS" Value="tab_feed.png"/> </OnPlatform> </NavigationPage.Icon> <x:Arguments> <views:ItemsPage /> </x:Arguments> </NavigationPage> </MasterDetailPage.Detail> </MasterDetailPage> <ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:d="http://xamarin.com/schemas/2014/forms/design" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006 mc:Ignorable="d" x:Class="App6.Views.MenuPage" Title="Menu"> <StackLayout VerticalOptions="FillAndExpand"> <ListView x:Name="ListViewMenu" HasUnevenRows="True"> <d:ListView.ItemsSource> <x:Array Type="{x:Type x:String}"> <x:String>Item 1</x:String> <x:String>Item 2</x:String> </x:Array> </d:ListView.ItemsSource> <ListView.ItemTemplate> <DataTemplate> <ViewCell> <Grid Padding="10"> <Label Text="{Binding Title}" d:Text="{Binding .}" FontSize="20"/> </Grid> </ViewCell> </DataTemplate> </ListView.ItemTemplate> </ListView> </StackLayout> </ContentPage>
- 44. Shell UI 1 Page Bottom Tabs Bottom & Top Tabs FlyoutTop Tabs
- 46. How Do You See the World Windows or Mac iOS or Android Native UI or Drawn Forms or Classic XAML or C# MVVM or Reactive or MVU
- 47. Embrace the Best of All Worlds Windows AND Mac iOS AND Android Native UI AND Drawn Forms AND Classic XAML AND C# MVVM AND Reactive AND MVU
- 48. .Forms
- 51. Install Faster, Load Faster • Faster solution creation • Faster solution/project load Visual Studio 2017 Visual Studio 2019
- 52. Code Faster
- 53. Optimized Code Editor Available now in Visual Studio 2019 for Mac
- 54. XAML IntelliSense Available in Preview in Visual Studio 2019 for Mac
- 55. IntelliCode Available now in Visual Studio 2019 (Windows)
- 56. Android XML + Designer
- 57. And in the next release of Visual Studio:.AXML .XML Android XML
- 58. Build Faster
- 59. • 800x480 display at 252ppi • 256 MB RAM • 1GHz • Adreno 200 GPU • 5 megapixel camera Nexus One (2010) • 1080x2160 resolution at 443 ppi • 4GB RAM • Octa-core (4x2.5 GHz, 4x1.6GHz) • GeekScore: 2,353 single core, 7,628 multi-core) • Dual 12MP wide-angle & telephoto cameras • Adreno 630 GPU • 12.2 MP camera Pixel 3 (2018)
- 60. Today, apps are more complicated
- 61. SmartHotel360 Reference App Step VS 2017 (15.8) VS 2019 (16.0) Delta First Build 01:04.20 00:50.13 -21.95% Incremental Build (XAML Change) 00:10.62 00:07.47 -29.66% Deploy (XAML Change) 00:09.03 00:04.44 -50.83%
- 62. Iterate Faster
- 63. Announcing XAML Hot Reload for Xamarin.Forms Iterating on UI
- 64. Demo:
- 65. XAML Hot Reload for Xamarin.Forms Intelligent and resilient No setup or code changes Emulator, Simulator, or Device Interact with your real data Works with custom controls, third party libraries and frameworks, Shell, resources, and more! Android or iOS
- 66. Private Preview Available Today https://aka.ms/XAMLHotReload
- 67. Developer Productivity Cross-Platform Everything 100% Native & Optimized
- 68. .Forms
- 69. Thank you. James Montemagno Principal Program Manager – Mobile Developer Tools, Microsoft motz@microsoft.com Montemagno.com @JamesMontemagno Weekly development podcast mergeconflict.fm Weekly development show xamarinshow.com