iPhone / iPad IOS File Permissions / SandBox anyway to give permissions to another app?-Collection of common programming errors
On a normal iOS device this is not possible.
On a jailbroken device, use NSFileManager. It gives you full access to the filesystem – just give it the paths you want to mess with. You can get the contents of a directory with its –contentsOfDirectoryAtPath:error:
method and move files around with –moveItemAtPath:toPath:error:
For more – Apple iOS Runtime Environment