ipad system, how to change the file association code

1, ipad system, how to change the code associated with the file (it should be the same Apple systems); open the file, such as doc, how to change the default open mode;.
2, I opened the program myself. Doc program, how to take parameters into account, not a double-click. Doc to open the file.
Experts to help answer! Thank you
Reply:
Read the book to find the iphone
Reply:
Now I earn points in the fierce Yeah, brother, I'll answer you.
1 You can not modify the default open mode, but you can register your application is associated with which files. Please search: CFBundleDocumentTypes
2 associated with their application supports doc files. Then the system will start supporting your application to open play doc files, please search: application: openURL: sourceApplication: annotation:

Reference: http://developer.apple. com / library / ios / # DOCUMENTATION / iPhone / Conceptual / iPhoneOSProgrammingGuide / StandardBehaviors / StandardBehaviors.html
Reply:
Thank you to provide a method!