Introduction to iOS develop development in C# with xamarin. This presentation goes through the basics of the Xamarin Paltform as well as why C# is so awesome. Also touch on a bit of Android and cross platform development

1. Developing native
iOS & Android apps
in C#
James Montemagno
Developer Evangelist, Xamarin
@JamesMontemagno | www.MotzCod.es

2. The World of Mobile

3. More than
one OS

4. Android is
a bit
popular

5. Architecting
Mobile Apps

6. Single App

7. Single App

8. Single App

9. More Platforms == More Users

10. Silo
Approach
Build Apps
Multiple
Times

11. Write Once,
Run Anywhere
Approach
Lowest
Common
Denominator
App Generation

12. Write Once,
Run Anywhere
Approach
Lowest
Common
Denominator
App Generation

13. Xamarin
Approach
Native with
Code
Sharing

14. Windows
APIs
100%
Coverage

15. iOS
APIs
100%
Coverage

16. Android
APIs
100%
Coverage

17. C# runs on 2.6 Billion Devices

18. C#
Native Apps
No Compromises

19. Why C#?
§ Statically Typed

20. Why C#?
§ LINQ
§ Lambdas
Returns an array of “Names” from the list of People.

22. Why C#?
§ Events & Delegates

23. Callback Hell

24. Callback Hell

25. Enter Async/Await

26. Enter Async/Await
https://developer.apple.com/library/ios/documentation/uikit/reference/uiview_class/UIView/UIView.html#//
apple_ref/occ/clm/UIView/animateWithDuration:animations:

27. Enter Async/Await

28. How
Xamarin
Works
• C# + .NET Runtime
• Native UI
• Native Performance

29. Let’s build a native iOS app
all in C# with Xamarin

30. Sharing Code

31. File Linking

32. Shared Code Projects

33. Portable Class Libraries
• 1 Assembly
• Multiple Platforms
• Including:
• Xamarin.Android
• Xamarin.iOS

34. Live Coding Adventure 2

35. Xamarin is more
Xamarin Test Cloud
Xamarin for
Visual Studio

36. Where Do I Start?
Xamarin.com

37. Try Xamarin
Today

38. http://meetup.com/SeattleMobileDevelopers
§ First Tuesday
§ All Topics
§ Lightning Talks

39. Find Me:
@JamesMontemagno
www.MotzCod.es
GitHub.com/JamesMontemagno
Xamarin:
@XamarinHQ
www.Xamarin.com
Latest App
My StepCounter for Android & iOS
www.MyStepCounterApp.com
100% Open Source
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