IPhone : opening files + bundle subdirectories

Question

Hello.
I would like to know :
- If there's another way to put and open files on the iPhone instead of using iPhone resource bundles (for example, I would like to add files later in my application "directory") ? It seems there's no way to put or open a file directly on the filesystem of the phone.
- If it is necessary to use bundles :
* is it possible to add a bundle later for an application (containing extra data files for example) ? (How ?)
* is it possible to use subdirectories in bundles ? (Even if I have subdirectories in my XCode resources directory, all the files seem to be copied in the same directory on the iPhone).
Thank you for your answer.
Patrick

Answer 1

In fact, my application needs to access files stored in such a hierarchy :
Directory1
- SubDirectory1
-- File1.txt
-- File2.txt
- SubDirectory2
-- File1.txt
-- File2.txt
Directory2
- SubDirectory1
-- File1.txt
-- File2.txt
- SubDirectory2
-- File1.txt
-- File2.txt
The problem is that the C-based library I use requires the path of the root directory and uses files in the subdirectories, so I added all that hierarchy in my project resources in XCode and I gave the path of the bundle to that library, but it did't work because all the files seem to be copied at the root of the bundle directory (ignoring my subdirectories). Is there any solution to that problem ?
Patrick