Four Platforms, One Codebase - GANG, Feb 2014

You want to write mobile apps, but you don’t want to write the same code four times over. You want cross-platform apps, but you don’t want to sacrifice the native speed and power. You want to create native iOS, Android, Windows Phone, and Windows 8 apps, and you want it all while maximizing code reuse and harnessing the power and simplicity of C#. You want four native platforms, but you want one codebase.
Of course you do. You want Xamarin.

Transcript

1. Four Platforms, One Codebase
 Cross Platform Mobile Apps with Xamarin rob gibbens artek software
3. what does an app cost?
4. Not Sure / Don’t Know $100,000 - $500,000 $50,000 - $100,000 $25,000 - $50,000 Less than $25,000 0% 7% 14% 21% 28% 10.8% 27.0% 27.0% 24.3% 10.8%
5. mobile development approaches
6. silos • build app multiple times • multiple teams • multiple code bases • different toolsets
7. write once, run anywhere • lowest common denominator • browser fragmentation • developing and designing for one platform
9. xamarin‘s unique approach • native user interface • native performance • shared code across platforms • c# and .net framework • full api coverage
10. why C#?
11. C# is awesome • async/await • linq • xml + xdocument • event handling, delgates, lambdas • generics
12. + (NSDate *) stripTime:(NSDate *) date { NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; ! NSDateComponents *components = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate:date]; ! date = [gregorian dateFromComponents:components]; ! [gregorian release]; ! return date; }
13. var newDate = date.Date;
14. NSString *string = @“ spaces in front and at the end “; NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
15. var trimmedString = “ spaces in front and at the end “.Trim();
19. mvvm
23. mvvmCros s
26. json serializer file system sqlite message bus visibilit y download cache gp s web browser photos localization email network phone call accelerometer
27. let’s code!
29. http://www.ibs.com
30. Contact Rob Gibbens ! github: http://github.com/RobGibbens/MvvmDemo twitter: @RobGibbens email : RobGibbens@arteksoftware.com