iOS Frameworks

Samuel Chow, MobyFab@Cybersam

End-to-End Platform

• More apps are connected to remote RESTful endpoints for richer content and user experience

• Better visuals + HTTP connection + JSON parser

iOS Frameworks

• REST– ASIHTTPRequest –

http://allseeing-i.com/ASIHTTPRequest/ – JSON Framework (aka SBJSON) –

http://stig.github.com/json-framework/ – YAJL – http://github.com/gabriel/yajl-objc – RESTKit – http://getsharekit.com/– ShareKit – http://getsharekit.com/

• Visual– Three20 – http://three20.info– Core-Plot – http://code.google.com/p/core-plot/

Three20 Visual

• Out of the box, you get these for freeCustom Views and Buttons Tab and Grid Table Items

LabelsSpecial View Controllers

Three20 Non-visual Utilities

• Network Caching• Remote image retrieval• Data persistence• HTTP Request/Response• JSON parsing (via JBSON or YAJL)• View navigation• CSS-like styling mode

Three20 Object Flow

Three20 Object Flow

- Data representation- Prepare to send request- Parse response

- Transform data objects to table items- navigation URLs

- Visual configuration- Visual layout

Demo

http://api.twitter.com/1/statuses/public_timeline.json

Low-level vs High-level

• Three20 and common REST Frameworks– Too much time spent on crafting request, parsing

responses, and creating representation of remote data

• Enter RESTKit– High-level abstraction of REST operations– It enables you to focus on modeling RESTful objects to

your in-memory object

• Conversely, if you want lower level, more complete HTTP swiss-army knife then consider ASIHTTPRequest

Three20 + RESTKit Integration

• RESTKit provides the RKRequestTTModel as a convenient class for integration with Three20

• No need to supply the parsing logic in requestDidFinishLoad:

• Simply map the data object properties to the JSON elements

• Supply the URL (host and path)• RESTKit will do the heavy lifting for you

Thank You

DOWNLOAD CODE + PRESENTATION SLIDES

FROMHTTP://CYBERSAM.COM/

Reference and credit: Blake Watters, Two Toasters, and Three20