I saw mulitple apps using this, e.g. Facebook iPad App, Twitter iPad App .
How is it implemented, that multiple views can be draged in and out to the main view?
It seems as they are all in one chain of views.
I can’t figured it out.
Thanks for your help.
Twitter and Facebook both do some pretty custom stuff for their iPad apps. They also both have lots of open source iOS code that helped them do it. Check out TWUI from Twitter and Three20 from Facebook.
A slightly easier way to do a similar effect is to use a UISplitViewController. A split view controller is kind of like the big brother of a UINavigationController on the iPhone.