Four Platforms, One Codebase

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
 xamarin + mvvmcross 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. 4% 3% 40% 52% Android iOS Windows Phone Blackberry
8. Why Xamarin? ▪ share code between platforms ▪ use our existing .net skills ▪ powerful and modern framework ▪ easy access to native apis ▪ target multiple devices ▪ rich ide support ▪ extensive support and documentation
9. Fully Native ▪ native compilation ▪ full support for underlying system ▪ no difference between mono-based and obj-c at runtime ▪ ui still written and defined in native apps ▪ native toolkit
10. Shared Code ▪ most non-ui or platform code ▪ core application logic ▪ entities ▪ local database access ▪ linq queries ▪ network access
11. + (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; }
12. private DateTime StripTime(DateTime date)
 {
 return date.Date;
 }
13. NSString *string = @“ spaces in front and at the end “; NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
14. var trimmedString = “ spaces in front and at the end “.Trim();
18. Requirements ▪ iOS ▪ mac ▪ xamarin.iOS ▪ xamarin studio or visual studio ▪ android ▪ mac or windows ▪ xamarin.android ▪ xamarin studio or visual studio ▪ windows phone / windows rt ▪ windows ▪ visual studio
19. What do you get?
21. Xamarin.iOS
23. Xamarin.Android
28. Xamarin.Mobile
29. mvvm
33. mvvmCross
37. json serializer file system sqlite message bus visibility download cache gps web browser photos localization email network phone call accelerometer
38. let’s code!
39. questions?
42. Contact Rob Gibbens twitter: @RobGibbens email : RobGibbens@arteksoftware.com