No, you can't do that. You have to contain everything from within the app on iOS. iOS has no built-in editing or viewing applications that are automatically launched if you want to edit or view a document. At least that's what I've been led to believe could be wrong though...
okey..
so is it possible to create an application that lunches PDF documents ?
if yes how can i do ? knowing that i'm a software programmer but never programmed a smart phone application ! and i'm using a PC ! not a MAC !