How to implement an app using OBD2 (ELM327) like Torque in android?

I am very new to obd2 and elm327. I need to develop an application to get car info using obd2(bluetooth) and elm327. Please any one can help. Thanks in Advance.

What app is used for ELM327?

Obd Arny is a straightforward OBD2 app that works with any ELM327 adapter, and can get you up to speed on your vehicles DTC's in no time. The app is easy to use and very clearly labeled, and it allows you to access live data from your vehicle, as well access charts with diagnostic data.

Welcome to Stackoverflow! Your question is a little bit broad. As I maintain a bluetooth OBD Android application, I'll give you some directions.

Start with the Bluetooth Chat sample application to learn the basics of communicating with a bluetooth serial device. Then study the ELM327 Programmers Guide to learn the specifics of the protocol. Checkout existing projects for ideas.