Presented at NDC Oslo, 14th June 2013.

1. iOS with C# using Xamarin
Craig Dunn
Developer Evangelist
Xamarin
craig@xamarin.com
@conceptdev

2. Why Xamarin.iOS?
aka Why Are You Here?
• Write C# apps for iPhone, iPad and iPod
• Share C# with other platforms:
Xamarin.Android
Windows Phone
Windows Store Apps
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•
•
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re-use C# from existing projects
Create native iOS user interface
Native app == native performance
Entire iOS SDK directly accessible (StoreKit, iCloud, etc)
You can add your own Objective-C libraries too

3. How Does it Work?
• Mono
C# + .NET implementation for Linux
started in 2001/released 2004
perfect fit for today’s mobile platforms: iOS & Android
• “Bindings”
exposes iOS as C#
you can write your own to incorporate any Objective-C
• Compiler
produces native ARM binary
can link out unused code

4. How Does it Work?

5. Xamarin Installer
• Simple unified installer
http://xamarin.com/download
• You need to install Apple’s Xcode (& join their developer program)
http://developer.apple.com/ios

6. Development Environment Support
Mac OS X
IDE
iOS
Android
Windows Phone
Windows
+
Xamarin
Business
Edition
+
Mac

7. Mac OS X
Windows
iOS apps
in Visual
Studio?!
Visual Studio
Xamarin.iOS for
Visual Studio plug-in
Build Host configuration
iOS Projects
iOS Property Pages
iOS build, deploy, debug
iOS Output panes
Network
access
Xamarin Build Host
Apple iOS SDK
Xcode
Interface Builder
Compiler
Keychain Certifications
Provisioning Profiles
Device
iOS Simulator

8. iOS Development Environment
Visual Studio
Xamarin Studio

9. iOS UI Designer
Xamarin Designer - alpha
Xcode - now

10. iOS Development Environment
• Code signing
• App configuration
• Deployment
Keychain - certificates

11. iOS Development Environment
• Code signing
• App configuration
• Deployment
Provisioning Portal
http://developer.apple.com

12. iOS Development Environment
• Code signing
• App configuration
• Deployment

13. DEMO

14. DEMO

16. SHARE
Components
Code
‘Structure’
Design

17. SHARE

18. Recap
•
•
•
•
•
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Build iOS apps in C# with .NET
Use Xamarin Studio or Visual Studio
Apps have native look and feel
Apps are native, with native performance
Share code
Component Store
http://components.xamarin.com

19. What’s Next?
•
•
•
•
•
async/await
F#
Portable Class Libraries (PCL)
Xamarin.iOS Designer
iOS7...

20. What’s Next?
async/await

21. Xamarin iOS UI Designer
What’s Next?

22. Go!
• 10 minute guide to building an app
http://xamarin.com/getting-started
• Docs, Recipes
http://docs.xamarin.com/
• Forums
http://forums.xamarin.com
• Samples
http://github.com/xamarin
http://xamarin.com/download

23. Q&A

24. Craig Dunn
Developer Evangelist
Xamarin
craig@xamarin.com
@conceptdev
THANK YOU