As the mobile landscape continues to expand and evolve managing multiple code bases in different programming languages and development tools can become a nightmare fast. In this session you will learn how to leverage the awesome features of C# and combine them with Xamarin technology to design and develop beautiful native cross platform mobile apps for iOS, Android, and Windows from a shared C# code base with the tools that you love. We will even see how to share more code with Xamarin.Forms, which enables you to build native UIs for iOS, Android and Windows Phone from a single, shared C# codebase.

1. DEVintersec+on
Session
DEV213
iOS and Android Development!
for the C# Developer with Xamarin!
James Montemagno
james@xamarin.com
@JamesMontemagno
#Xamarin

2. MyStepCounterApp.com!
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Who is this guy?!
James Montemagno!
Developer Evangelist, Xamarin!
h6p://www.2
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3. The best language for Windows development.
Modern Features • Advanced Tools • Proven Libraries • Large Community • Statically Typed

4. Windows Developer in Phoenix

5. I had an opportunity.

6. +
Xamarin makes C# the best language for mobile development.
Native Code Generation • Platform API Bindings • Code Sharing • Visual Studio

8. What is native?!

9. ?! ?! ?!
Native User Interfaces! Native API Access! Native Performance!
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The Anatomy of a Native App!
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10. Architecting !
Mobile Apps!

11. Silo!
Approach!
Build Apps!
Multiple
Times!

12. Write Once,!
Run Anywhere!
Approach!
Lowest !
Common!
Denominator!

13. ©
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Xamarin’s Unique Approach!
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Native With !
Code Sharing!

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Windows APIs!
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iOS APIs | 100% Coverage!
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Android APIs | 100% Coverage!
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17. Anything you can do in Objective-C, Swift, or Java !
can be done in C# with Xamarin using Visual Studio!
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18. How!
Xamarin!
Works!
§ C# + .NET Runtime!
§ Native UI!
§ Native Performance!

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Always Up to Date!
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20. Android
Develop on:!
• Mac or PC!
• Xamarin Studio or Visual Studio!
Run on:!
• Google Emulators!
• Xamarin Android Player!
• Physical Device!

21. Xamarin Android Player
Super High Speed Android Emulator!
• Mac or PC!
• Runs Side-by-side WP Emulator!
Free for Xamarin Subscribers:!
• Xamarin.com/Android-Player!

22. Develop on:!
• Mac in Xamarin Studio!
• or!
• PC in Visual Studio (connected to Mac “Build Host”)!
Run on:!
• iOS Simulators on Mac!
• iOS Device plugged into
a Mac!

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Let’s build an app!
iOS Photo Sharing!
"Live coding adventure part 1!

24. Code Sharing!
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Code Sharing Statistics!
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Android
iOS
Mac
WP

26. Portable Class Libraries!
• 1 Assembly!
• Target Multiple
Platforms!
• Easy to
distribute!

27. NuGet!

28. Shared Projects!

29. ©
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Let’s share some code!
Code
sharing
strategies
Live coding adventure part 2

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What about !
the UI?!
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31. Xamarin + Xamarin.Forms!
With Xamarin.Forms: !
more code-sharing, native controls!
Traditional Xamarin approach!
Shared UI Code!

33. ©
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Let’s take a quick look!
Travel Expenses + Azure Mobile Services!

34. Create native iOS, Android, Mac and
Windows apps in Visual Studio and C#

35. Automatically test your app on
thousands of real devices in the cloud.

36. Real-time monitoring. Track crashes
and exceptions to understand what is
happening with live users

37. xamarin.com/university
Unrivaled Mobile Development Training!
Live unlimited mobile development training from mobile experts, !
in your time-zone, on your schedule and as often as you'd like.!
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38. Awesome Announcements!
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39. Awesome Announcements!
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§ Visual
Studio
2015
Preview
Release
o Built in templates
§ Visual
Studio
Community
Edi+on
Support
§ Free
Xamarin
Starter
Edi+on
for
Visual
Studio
Users
o Doubled size limit
o hBp://www.xamarin.com/starter
o Available in Xamarin Studio Today, Visual Studio in next few weeks
§ Special
offers
for
MSDN
Subscribers
o hBp://www.xamarin.com/msdn

40. 40
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Review!
§ Re-use your C# and .NET skill to develop iOS and
Android mobile apps with Xamarin!
§ Xamarin apps look and feel native, because they
are native!
§ Xamarin gives you 100% API Coverage!
§ Use the tools you love like Visual Studio!
§ Use the .NET libraries you know and love!

41. ©
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References!
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§ Get Started!
o Xamarin.com!
§ Get your free C# Shirt!
o Xamarin.com/Shirt!
§ Me:!
o james@xamarin.com!
o http://github.com/jamesmontemagno!
o @JamesMontemagno!
§ Slides: !

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Ques+ons?
Thank
you!
#Xamarin
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