I'm using their normal open file program to open the file browser.
I'm using
<LoadDialog>:
size: '300dp', '300dp'
title: filechooser.path
choosen_file: None
BoxLayout:
pos: root.pos
orientation: "vertical"
FileChooserIconView:
id: filechooser
path: os.path.expanduser('/var/mobile/Media/PhotoData/Sync/')
I'm trying to access the photo library of iOS.
I don't think it's possible with Kivy alone yet. But you can try to access Camera to take pictures, at least I think camera is accessible on iOS.