Developing Native iOS, Android, and Windows apps in C# with Xamarin @XamarinHQ #Xamarin Developing Native iOS, Android, and Windows apps in C# with Xamarin

Who is this guy? James Montemagno Developer Evangelist, Xamarin james.montemagno@xamarin.com @JamesMontemagno | motzcod.es @XamarinHQ | blog.xamarin.com

Create native iOS, Android, Mac and Windows apps in Visual Studio and C# Automatically test your app on hundreds of mobile devices

What is native?

The Anatomy of a Native App Native User Interfaces Native API Access Native Performance

Architecting Mobile Apps

Build App Multiple Times The Silo Approach Build App Multiple Times

The Write-Once-Run-Anywhere Approach Lowest Common Denominator Poor user experience – API coverage – Performance High abandonment rates Wasted investment

Xamarin’s Unique Approach Native With Code Sharing

Windows APIs

iOS APIs | 100% Coverage

Android APIs | 100% Coverage

Anything you can do in Objective-C, Swift, or Java can be done in C# with Xamarin using Visual Studio

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. There is no compromise on performance. Xamarin apps look and feel native because they are native.

Emerging Technologies & Devices Android Wear Google Glass Amazon Fire Phone Amazon Fire TV

Live Coding Adventure 1

Portable Class Libraries

Xamarin + Xamarin.Forms With Xamarin.Forms: more code-sharing, native controls Traditional Xamarin approach Shared UI Code

Xamarin + Xamarin.Forms Quickly and easily build native user interfaces using shared code Xamarin.Forms elements map to native controls and behaviors Mix-and-match Xamarin.Forms with native APIs Shared UI Code I

What’s Included 40+ Pages, Layouts, and Controls Build from code behind or XAML Two-way Data Binding Navigation Animation API Dependency Service Messaging Center

Pages Content MasterDetail Navigation Tabbed Carousel First you have a set of pages for each screen of your application There are things like Content, and MasterDetail which gives you a nice flyout With a tabbed view you get the correct look on each platform iOS on bottom, Android on top, and on WP you have a Pivot control

Layouts Inside of a page are layouts Stack Absolute Relative Grid ContentView ScrollView Frame Inside of a page are layouts A lot of options from something simple like a stack panel to complex and powerful grids

Controls ActivityIndicator BoxView Button DatePicker Editor Entry Image Label ListView Map OpenGLView Picker ProgressBar SearchBar Slider Stepper TableView TimePicker WebView EntryCell ImageCell SwitchCell TextCell ViewCell

Login ViewModel

Login Page – Code Behind

Login Page – XAML

Login Page

Live Coding Adventure 2

Key Attendees xamarin.com/evolve

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