dallas android - android & ios development in c# with xamarin

Android & iOS App Development in C#

James Montemagno @JamesMontemagno

Developer Evangelist

Who is this guy?

James Montemagno

Developer Evangelist

james@xamarin.com http://motz.codes @JamesMontemagno

Xamarin—A Complete Mobile Solution

Design Develop Integrate

Learn

Xamarin Platform

Test Monitor

Mobile Development Approaches

Silo Approach

Build App!Multiple Times!

!

Write-Once-Run-Anywhere Approach

Lowest!Common!

Denominator! Black box

Xamarin’s Unique Approach

Native with!Code Sharing!

Why C#?

C# Is Pretty Awesome

•  LINQ Support

•  Work With XML Easily XDocument

•  Event Handling & Delegates

C# Is Pretty Awesome

Json.NET offers simple conversions to and from JSON strings and .NET objects, with SerializeObject and DeserializeObject methods.

C# Is Pretty Awesome

Write Beautiful & Maintainable Code

C# Is Pretty Awesome

C# with XamarinJava

C# & Async with Xamarin

How Xamarin Works

Windows APIs

iOS

100% API Coverage

Android

100% APICoverage

Native Performance

Xamarin.iOS does full Ahead Of Time (AOT) compilation to produce an ARM binary for Apple’s App Store.

Xamarin.Android takes advantage of Just In Time (JIT) compilation on the Android device.

Magical Android Bits

Visual Studio – 2010 and Higher

Xamarin Studio – Mac or PC

Xamarin Android Player

High Speed Android Emulator•  Mac or PC•  Runs side-by-side Windows

Phone EmulatorFree for Xamarin Subscribers:•  Xamarin.com/Android-Player

Let’s build an Android App

Code Sharing

•  Up to 90% Code Reuse•  Leverage existing libraries

–  NuGet Support

Code-sharing stats from iCircuit, built with Xamarin and featured on the App Store. Source: http://praeclarum.org/post/42378027611/icircuit-code-reuse-part-cinq

Shared Projects

Portable Class Libraries

•  1 Assembly•  Multiple Platforms•  Including:

•  Xamarin.Android•  Xamarin.iOS

Let’s build an iOS App

Introducing Xamarin.UITest • Power C# Automation!

• Run tests locally on

simulator or device!

• Any Native or Hybrid

Mobile App!!

Let’s take a look real quick J

Resources

Android Ported to C#•  http://blog.xamarin.com/android-in-c-sharp/

Xamarin is FREE for Students•  http://www.xamarin.com/student

Documentation:•  http://developer.xamarin.com

Get StartedXamarin.com

Thank you!Q&A

James Montemagno

Developer Evangelist

james@xamarin.com http://motz.codes @JamesMontemagno