This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
There was a discussion done related to this, check this, about a year back. See if that helps you find an answer or at least a satisfactory reason as to why this is not allowed. You can then explain this to the requirements team.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: Android - How to allow the application to end a phone call