Is there a way to list the contents of a particular directory?

Hi,
I'm creating the blue-print of a new iPad app and was wondering if there was a way to request the contents of a particular directory (eithre local to the device or a a particular directory on the web) and also get the "type" of each item.
For example if inside a directory "Directory1" and inside that directory I have 4 files and another directory, (file1.gif, file2.txt, file3.mov, file4.mp3, Directory2)
Is there a way to request the contents of Directory1 and the type of files they are?
The ideal thing will be to get a recursive request and get an array of contents of all directories inside a particular directory.
something like:
Directory1[file1a.gif,file1b.txt,file1c.mov,file1d.mp3,[Directory2[file2b.mov,fi le2b.mp3]]]
What I want is to create a navigation for the user based on the resultant strign.
Am I re-inventing the wheel here?
Any direction will be greatly appreciated. I rather adjust blue-print now based on what is possible.
Thanks!

We are users here. You might have better luck going to the developers forum.
http://developer.apple.com/devforums/
There are also links on that page that may help too.

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