view, modify, and email .pdf's on iphone sdk 3.0

Question

I need these features for a future application.

Answer 1

You can set External datatypes through Info.plist, which configures which files you wanna open with the app from email itself. When you hold down on email attachment, it'll bring you action sheet with option to your app name and when you click, it'll load your app, but you manual have to handle the request and open the document or handle the document as per your requirements.