Cross platform development with C#
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This document discusses cross-platform development using C# and Xamarin. C# can be used to write code once that runs on Windows, iOS, Android, and other platforms using Mono and Xamarin. While HTML5 promises cross-platform capabilities, it requires JavaScript and does not provide full access to native platform features. C# allows access to native SDKs and most non-UI code can be shared across platforms. Xamarin tools enable developers to write fully native mobile applications in C# for iOS and Android.
Cross platform development with C#
- 1. Cross platform development with C# By Michele Scandura
- 2. Michele Scandura Senior Software Developer at Compass Informatics (www.compass.ie) EMAIL [email protected] TWITTER @mikescandy BLOG ???
- 3. But… HTML5? “I think the biggest mistake that we made as a company is betting too much on HTML5 as opposed to native” (Mark Zuckerberg, Sept. 2012) HTML5 is indeed a great technology and is here to stay Promise: write once, run everywhere JavaScript engines are getting faster, and you can use JavaScript on client and server But…
- 4. But… HTML5? You have to program in JavaScript Write once, deploy everywhere not 100% true UI paradigms are different on each platform No access to native libraries
- 5. But… HTML5? iOS Android Windows Phone
- 6. C# as a multiplatform alternative Plus a few nice additions Mono makes it possible to run C# code on the most Playstation Mobile (PS VITA) widespread platforms The Unity 3d Engine uses C# as a All Windows variants scripting language (and Unity runs on Wii and WiiU, PS3, XBOX, Flash) Linux PS4 will definitely run C# code OSX BSD, Solaris, Wii, PS3 iOS CPU architecture is not an issue: Android x86, x64, IA64, PowerPC, SPARC, ARM…
- 7. Advantages in using C# Linq / Lamda, Parallel Linq, Tasks Memory management (no pointers, but leaks are still a problem) Strongly typed implicit variable declaration Extension methods Strongly typed Generics WCF Async/await (This applies only if using Visual Studio) ReSharper
- 8. C# as a multiplatform alternative “Between Windows, iOS and Android, your C# code can run on over 2.2 billion devices” Nat Friedman (CEO of Xamarin, Jan 2013)
- 9. Introducing Xamarin Newly released tools: Xamarin Studio, Xamarin.Android and Xamarin.iOS (formerly Mono for Android and MonoTouch Provide full access to platform SDK 100% native Faster than native! (Mono vs. Dalvik, xobotos) Always in sync with native SDKs (iOS 6.1 released 28/1, MonoTouch update released the next day)
- 10. Reusable code Most non-UI code can be shared across platforms Core logic Entities, messages, interfaces Linq Network access File / Database access might be tricky
- 11. Reusable code: how to File linking Abstraction Observer pattern Partial classes Conditional compilation Portable class libraries
- 12. Useful C# libraries TinyIoC / TinyMessenger WaveEngine MonoGame (XNA) We have IoC containers, EmguCv (open CV) MVVM, 2D and 3D game NetTopologySuite engines, ORM, Image MVVMCross processing library, Logging, Web services, GIS tools… SQLite-Net ServiceStack Log4Net Many more
- 13. And native too Google Maps API V2 Flurry OxyPlot.2DGraphLib Chipmunk Physics And many more
- 14. Tips and tricks Developing for iOS requires a Mac Emulators are good but: iOS provides an x86 simulator Android provides both ARM and x86 emulators iOS deployment still requires the usual certificates and some Xcode Memory leaks Git support in TFS / Xamarin Studio
- 15. Demo time (sort of!)
- 16. Conclusions It all sounds great, isn’t it? Sometimes is not straightforward as it seems Relying on semi-closed platform Specific platform knowledge is still a must: get ready to learn some Java and objective-c Mobile is not only coding, UI and UX are crucial for a successful app
- 17. Some links Apache Cordova - http://cordova.apache.org/ Xamarin - http://xamarin.com/ iOS Dev Center - https://developer.apple.com/devcenter/ios/index.action Android Developer - http://developer.android.com/index.html Xamarin on GitHub - https://github.com/xamarin The Mono Project - http://www.mono-project.com/Main_Page TinyIoC - https://github.com/grumpydev/TinyIoC TinyMessenger - https://github.com/grumpydev/TinyMessenger WaveEngine - http://www.waveengine.net/ MonoGame (XNA) - http://monogame.net/ EmguCv (open CV) - http://www.emgu.com/wiki/index.php/Main_Page NetTopologySuite - http://code.google.com/p/nettopologysuite/ MVVMCross - https://github.com/slodge/MvvmCross SQLite-Net - https://github.com/praeclarum/sqlite-net ServiceStack - http://www.servicestack.net/ Xamarin.iOS Bindings - https://github.com/mono/monotouch-bindings OxyPlot.2DGraphLib - https://github.com/Emasoft/OxyPlot.2DGraphLib.MonoTouch ShinobiControls - http://blog.xamarin.com/shinobicontrols-joins-the-xamarin-component-store-and- evolve-speaker-lineup/