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URL - http://three20.info
Three20 Overview
Core
Think of core as your swiss-army knife of Objective-C development. You should take some time to familiarize yourself with its features.
With the Three20 Core you can
- generate md5 hashes from NSData objects,
- extend the logging and debug capabilities of Xcode,
- compare two version strings (is 3.0 older than 3.1?),
- create non-retaining NSArrays and NSDictionaries for delegate use,
- strip HTML tags from strings,
- safely add non-empty, non-nil strings to NSDictionaries,
- and format dates in relative time (5 hours ago).
You'll find all of these methods in the Three20 Xcode project in the
Global => Core and Global => Additions => Core groups.
Network
If you're building an app that uses a web-based API, Three20's Network component is going to make your job easier. Three20 supports disk and memory network caching. There is also a layer built upon requests that makes it easy to process the response data.
UI
A growing set of common views and controllers is available within the Three20 UI. The well-known Facebook photo browser/thumbnail viewer is one such controller.
소스다운 - http://github.com/facebook/three20
2010.8.4에 받아둔 소스 -
three20.zip