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Cross-platform mobile development with c#

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Presentation on theme: "Cross-platform mobile development with c#"— Presentation transcript:

1 Cross-platform mobile development with c#
Greg Shackles - June 12, 2012

2 About Me Greg Shackles email twitter github blog Slides
Senior Software Engineer OLO Online Ordering twitter @gshackles github blog Slides

3 the Book Discount Code: AUTHD Print Book: 40% Off
E-Book: 50% Off

4 Market Share (US): April 2012
50.8% Android 31.4% Apple 11.8% RIM 4.0% Microsoft Source: comScore

5 native platform Languages
Objective-C Java C#

6 Write once, run anywhere

7 platform differences != !=

8 c# Everywhere MonoTouch Mono for Android Native

9 The Power of C# Base Class Library LINQ Parallel LINQ
Memory Management Task Parallel Library Dynamic

10 xamarin Tools Access to full platform SDKs 100% Native Linker
frequent releases active community Improved API

11 obj-c C# CFStringRef keys[] = { kCTFontAttributeName,
kCTForegroundColorAttributeName };  CFTypeRef bval[] = {     cfListLineCTFontRef,     CGColorGetConstantColor(kCGColorBlack) attr = CFDictionaryCreate ( kCFAllocatorDefault,     (const void **) &keys, (const void **) &bval,     sizeof(keys) / sizeof(keys[0]), &kCFTypeDictionaryKeyCallBacks,     &kCFTypeDictionaryValueCallBacks);  astr = CFAttributedStringCreate( kCFAllocatorDefault, CFSTR("Hello World"), attr); obj-c C# var attrs = new CFStringAttributes {     Font = listLineCTFont,     ForegroundColor = UIColor.Black.CGColor }; var astr = new NSAttributedString ("Hello World", attrs);

12 Java C# <activity android:name=".SampleActivity“
<intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> findViewById( new View.OnClickListener() { @Override public void onClick(View v) // handle click } ); Java C# MainLauncher=true)] FindViewById<Button>(Resource.Id.Button).Click += delegate { // handle click };

13 Environment: iOS Xcode Integration Mac OS X MonoDevelop

14 Environment: android Mac OS X MonoDevelop Windows Visual Studio

15 UI Designer: MonoDevelop and Visual Studio
Environment: android UI Designer: MonoDevelop and Visual Studio

16 Environment: windows phone
Visual Studio

17 Some Apps ...and many more! icircuit rdio gmusic c# to go
infinite flight mwc 2012

18 even non-mobile platforms!
Benefits Powerful and mature language Skill reuse Native apps Code reuse across platforms even non-mobile platforms!

19 app Architecture

20 * with some limitations
What code can be shared? Most non-UI or platform code Core application logic Entities LINQ (objects, XML) Network access File / Database Access * * with some limitations

21 * currently in development
sharing techniques File Linking Abstraction Observer Pattern Partial Classes and Methods Conditional Compilation portable class libraries * * currently in development

22 library:
Supports iOS, Android and Windows Phone

23 Demo Time

24 Questions?

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