Is it possible to use the new iOS 8 Document Provider Extensions / Document Picker from within Appcelerator?
From the Apple website:
https://developer.apple.com/library/ios/documentation/FileManagement/Conceptual/DocumentPickerProgrammingGuide/Introduction/Introduction.html
https://developer.apple.com/library/ios/documentation/General/Conceptual/ExtensibilityPG/FileProvider.html