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Presentation from Software Architect 2014, covering Xamarin's offering for building cross-platform mobile applications in C# while using the native platform APIs. The live talk also covered Xamarin.Forms.
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Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
C# EverywhereCross-Platform Apps with Xamarin
Sasha GoldshteinCTO, Sela Group
blog.sashag.net @goldshtn
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
everyone in this room is a
mobile developer
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
The Search for the Holy Grail
End-user experience
Developer productivity
Native
Web/hybrid
XamarinXamarin
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
The Xamarin Approach
• Fully native apps written entirely in C#
• Visual Studio designer, editor, debugger
• 100% of the native platform API available
• Sharing logic across platforms with PCLs
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
C# on 2.6 Billion Devices
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This presentation: http://s.sashag.net/sa-xamarin
How Xamarin Works
• C# bindings to 100% of the native API
• .NET runtime installed on the device as part of the application
• Native compilation– iOS: ahead-of-time compilation– Android: just-in-time compilation (like Java)
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
Tools and Platforms
• Xamarin Studio stand-alone IDE– Cross-platform: OS X and Windows– Supports iOS, Android, OS X
• Visual Studio extension– Windows only– Requires OS X build host for OS X and iOS– Supports Windows Phone and Windows 8
targets
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
Xamarin Successes
Rdio
Bosch-Siemens
Calca
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This presentation: http://s.sashag.net/sa-xamarin
DEMOBuilding an Android app in Visual Studio
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This presentation: http://s.sashag.net/sa-xamarin
Code Sharing Philosophy
• The view layer usually requires duplication
• The rest of the app (up to 90% code) can be shared
Android UIAndroid UI iOS UIiOS UI Windows Phone UIWindows Phone UI
Shared PCL
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
Platform-Specific Code
• Some platform-specific services are inevitable; hide them behind interfaces
Shared PCLdepends on ILocationProvider
Android layerLocationManager
Android layerLocationManager
iOS layerCLLocationManager
iOS layerCLLocationManager
DI DI
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
DEMOAdding an iOS app with shared components
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This presentation: http://s.sashag.net/sa-xamarin
Even More Code Sharing
• Xamarin.Forms is a cross-platform XAML-based UI library for simple controls
• MvvmCross is an open source library that introduces XAML-like data binding and commands to iOS and Android
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
DEMOUsing Xamarin.Forms for 100% code sharing
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This presentation: http://s.sashag.net/sa-xamarin
Decision Making
Join the conversation on Twitter: @SoftArchConf #SA2014
This presentation: http://s.sashag.net/sa-xamarin
Thank You!
Sasha Goldshtein
blog.sashag.net
@goldshtn
s.sashag.net/sa-xamarin
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