How to give navigate view like New Facebook iPhone Apps

I saw the new iPhone apps and it is superb. They have nearly more than 9 sections and they have given good navigate view. They have removed tab bar controller and instead of they have given one good navigate view.

Does any have seen this new Facebook apps and knows that how can we give same navigate view for the any apps.

Three20库中包含"Launcher View"类.它是一个开源库,可以免费使用.

http://github.com/joehewitt/three20/tree/master

这个库是由Facebook应用程序开发人员Joe Hewitt编写的,源自Facebook应用程序本身.