Is it possible to create a listener to get a message from whatsApp in android?
I mean like you have a broadcastReceiver
to listen to incoming S
There is also another library written in Python which you can use write custom application.
It also has terminal client and you run it in interactive mode and also supports group messaging.
There are lots of issues to fix.However you should not be abusive with whatsapp service.Don't use it to spam users.This is reverse engineered library and therefore unofficial.
Here the link:-yowsup