I'm writing an iOS app, and I would like to be able to view all of the files in iCloud drive. I've setup a UIDocumentPickerViewController with the following array of UTIs:
["\(kUTTypeContent)","\(kUTTypeData)","\(kUTTypeItem)"]
However, some types aren't showing, like iWork documents. iWork conforms to public.package, which conforms at the top to public.item. Do I need to declare all of the file UTIs individually? I've tried with PDFs, and they work fine.