I have table view and a plus button, when button tapped it present a document picker, I select files then return to main screen.
I store files by their urls, and present them via pdfkit framework.
The problem is, after a while document selected, i guess system restrict the accessing to that file. URL is like this: "file:///private/var/mobile/Containers/Data/Application/SOMENUMBERS/tmp/NAME/xxx.pdf" How can I get them to last longer?