iOS 9 read file permission

Question

In iOS 9+ I get a nil on any attempt to read from file. The file in this case is a image file path.
using

NSData(contentsOfFile: stringpath, options: NSD         


        

Answer 1

I encountered this error because I was attempting to access multiple files in the same block. The fix that worked for me was changing the code structure such that each file url was obtained, then read from, before attempting to get the next file url.