Portable Class Library Deep Dive
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This document discusses portable class libraries (PCLs), which allow sharing of code across platforms like Xamarin Android and iOS. PCLs use a single assembly that can target multiple platforms. They enable centralized code sharing and debugging across platforms. PCLs are a subset of the .NET framework and cannot reference platform-specific libraries. The document lists many Microsoft and third party libraries available as PCLs and provides examples of using PCLs with inversion of control containers. It encourages developers to create and use PCLs to easily share code across platforms.
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Portable Class Library Deep Dive
- 1. Portable Class Library Deep Dive #ShareMoreCode James Montemagno, Developer Evangelist @JamesMontemagno www.MotzCod.es
- 3. Portable Class Libraries •1 Assembly •Multiple Platforms
- 4. Portable Class Libraries •1 Assembly •Multiple Platforms •Including: • Xamarin.Androi d • Xamarin.iOS
- 5. Why Portable Class Libraries? • Centralized Code Sharing • How you expect it to work • Debug seamlessly into and out of PCL • Project/Assembly Sharing • NuGet
- 6. Platform Independent APIs • Platform-specific libraries can’t be referenced • E.g. No Silverlight Control Toolkit • No P/Invoke to C/C++ • PCL is a subset of .NET
- 7. What can I use?
- 9. Microsoft NuGet Libraries • • • • • • • • • Async for .NET Framework 4, Silverlight 4 and 5, and WP 7.5 & 8 Microsoft BCL Build Components Microsoft BCL Portability Pack Microsoft Composition Microsoft Compression Microsoft HTTP Client Libraries Microsoft Immutable Collections Microsoft ASP.NET SignalR .NET Client ODataLib
- 10. Available to Everyone! • Easier to use • Easier to create • True Cross Platform Portable Class Libraries
- 11. Awesome PCL Libraries • • • • • • • MvvmCross ReactiveUI Akavache – Async Persistent Key-Value Store Splat – Image Loading Budgie – Twitter Library Azure Mobile Services Json.Net • SO MANY MORE!!!
- 12. Demo
- 13. Inversion of Control (IoC) • Service Locator • Obtain Service/ViewModel with strong abstraction layer • Platform Specific Code • Through Interfaces
- 15. Or Your Own?!?! • 50 Lines of Code • http://bit.ly/50-lines-ioc
- 16. Demo
- 17. Summary • Portable Class Libraries are AWESOME! • Create + Share PCLs EASY • Be aware of PCL “profiles” • Lowest Common Denominator • Portable Class Libraries are
- 18. Resources • Source Code • http://bit.ly/planet-xamarin • Getting Started with PCL • http://bit.ly/pcl-get-started • Me • @JamesMontemagno • www.MotzCod.es
- 19. Q&A
Editor's Notes
- Platform-specific libraries cannot be referenced (eg. Community.Csharp.Sqlite.WP7) PCL is a subset and may not include classes that might be available in full class library.
- Change to httpclient
- Let’s look at Xamarin and VS 2013 to build modern apps on iOS, Android, and Windows Let’s start with something familiar
- Let’s look at Xamarin and VS 2013 to build modern apps on iOS, Android, and Windows Let’s start with something familiar
- Platform-specific libraries cannot be referenced (eg. Community.Csharp.Sqlite.WP7) PCL is a subset and may not include classes that might be available in full class library.
- Let’s look at Xamarin and VS 2013 to build modern apps on iOS, Android, and Windows Let’s start with something familiar