Android: Incoming call auto answer, play a audio file

Question

In Android, at the time of an incoming call, I want to receive it. Then, from my app, automatically play an audio file during a call and the other party should hear it. Is this

Answer 1

Try using telephonymanager, it contains the events you are looking for:

1. http://developer.android.com/reference/android/telephony/TelephonyManager.html#ACTION_PHONE_STATE_CHANGED