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Presentation for EastBay.NET user group on C# for non-Microsoft platforms like iOS, Android and Mac using Xamarin.
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Craig DunnDeveloper [email protected]@conceptdev
C# Everywhere
we’re not just on Windowsany more, Toto...
C# Everywhere
Mobile!
How Does it Work?
• Mono C# + .NET implementation for Linuxstarted in 2001/released 2004perfect fit for today’s mobile platforms: iOS & Android.NET 4.5 / C# 5
• “Bindings”exposes underlying SDKs as C#
think “projections” in Windows RT language:http://stackoverflow.com/questions/7432905/what-are-winrt-language-projectionshttp://tirania.org/blog/archive/2011/Sep-15.html
How Does it Work?
• “Bindings”exposes CocoaTouch/Objective-C as C#you can write your own to incorporate any Objective-C
• Compilercompiles IL and native runtime into native ARM appcan link out unused code - smaller executablessigns code for device testing and upload to App Store
iOS
How Does it Work?
• “Bindings”exposes Android/Java as C#you can write your own to incorporate any Java
• Compilerproduces IL and ships a native runtime to execute itcan link out unused code - smaller executablessigned for distribution to any phone, or stores like Google Play, Amazon, ...
Android
How Does it Work?
• “Bindings”exposes Cocoa/Objective-C as C#you can write your own to incorporate any Objective-C libraries/projects
• Compilerproduces IL and ships a native runtime to execute itcan link out unused code - smaller executablesapps can be distributed via Mac App Store
OS X
Why Xamarin.iOS?
• Write C# apps for iPhone, iPad and iPod• Share C# with other platforms:
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
Why Xamarin.Android?
• Write C# apps for Android phones & tablets• Share C# with other platforms:
re-use C# from existing projects• Create native Android user interface• Native runtime == native performance• Entire Android SDK available (including
Play Services and Compat Library)• Use Java libraries (if required)
Why Xamarin.Mac?
• Write C# apps for Mac OS X• Share C# with other platforms:
re-use C# from existing projects• Create native Mac (Cocoa) user interface• Native app == native performance• Entire Mac SDK directly accessible • You can add your own Objective-C libraries too
companion apps...
How Does it Work?
How Does it Work?
Mac OS X WindowsWindows
IDE
iOS
Android
Mac
Windows/Phone
C# Development Environments
XamarinBusiness Edition+
Mac+
Mac OS XWindows
Visual Studio Xamarin Build Host
Xamarin.iOS for Visual Studio plug-in
Build Host configurationiOS Projects
iOS Property PagesiOS build, deploy, debug
iOS Output panes
Device iOS Simulator
Apple iOS SDKXcode
Interface BuilderCompiler
Keychain CertificationsProvisioning Profiles
Networkaccess
iOS appsin Visual Studio?!
C# Development Environments
• CodingAuto-completeRefactoring
• User Interface DesignGUI tools
• Debugging• Build & Deploy
Simulators & DevicesTesting & Production/App Stores
IOSC# on iPhone, iPad and iPod touch
iOS Development Environment
Xamarin Studio
Visual Studio
iOS UI Designer
Xcode - now
Xamarin Designer - alpha
iOS Development Environment
• Code signing• App configuration• Deployment
Keychain - certificates
iOS Development Environment
• Code signing• App configuration• Deployment
Provisioning Portalhttp://developer.apple.com
iOS Development Environment
• Code signing• App configuration• Deployment
DEMO
ANDROIDC# on Android (Google Play, Kindle, ...)
Android Development Environment
Xamarin Studio
Visual Studio
Android UI Designer
Xamarin Studio
Visual Studio
Android Development Environment
Shared runtime fordebugging only.
Linking reduces size
Choose CPU arch
Android Development Environment
• AndroidManifest.xmlPermissionsApp configurationuse [Activity] and other attributes
Android Development Environment
• Deployment
Signing wizard
DEMO
MACC# on OS X
OS X Development Environment
Xamarin Studio
OS X UI Designer
Xcode
OS X Development Environment
• Code signing• App configuration
DEMO
CODE SHARINGC# Everywhere!
C# Everywhere
C# Everywhere
To Do List
SHARE
Components
Code
‘Structure’
Design
Field Service
MVVM Example
Shared
Shared
iOS Android
C# Everywhere
Recap
• 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
What else?
• async/await• F#• Portable Class Libraries (PCL)• iOS7
New features and APIs...• Google Play Services
In app purchasing, Location services, Maps v2
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
