four platforms, one codebase

Four Platforms, One Codebase Cross Platform Mobile Apps with Xamarin

rob gibbensinteractive business systems

what does an app cost?

mobile development approaches

silos• build app multiple times• multiple teams• multiple code bases• different toolsets

write once, run anywhere• lowest common denominator• browser fragmentation• developing and designing for one platform

xamarin‘s unique approach• native user interface• native performance• shared code across platforms• c# and .net framework• full api coverage

why C#?

C# is awesome• async/await• linq• xml + xdocument• event handling, delgates, lambdas• generics

+ (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; }

var newDate = date.Date;

NSString *string = @“ spaces in front and at the end “;NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];

var trimmedString = “ spaces in front and at the end “.Trim();

mvvm

mvvmCross

json serializer

file system

sqlite

message busvisibili

ty

download cache

gps

web browser

photos localizati

on

email

networkphone

callacceleromet

er

let’s code!

http://www.ibs.comhttp://www.ibs.com

Contact

Rob Gibbens

github: http://github.com/RobGibbens/MvvmDemotwitter: @RobGibbensemail : RobGibbens@arteksoftware.com