objective c - Can't read Root.plist with NSUserDefaults -

i've problem. have file root.plist many preferences but, when use:

nsuserdefaults standarduserdefaults 

to read it, nothing happened. why? can me?

thanks

why read file? user defaults aren't stored in plist in application bundle. if file contains "first-run" preferences set users need read file , copy values defaults using standard methods.