Need to play audio into a call

Question

If my application records some audio with MediaRecorder, is it possible to play the recorded audio file into a call that was started with ACTION_CALL or ACTION_DIAL?

I see that I can start calls from an application but is there a way for my application to know that the call was answered? At this point I would like to play a file of audio into the call. Then, is there a way for me to end the call?

Answer 1

android.intent.action.ANSWER may be what you are looking for, or possibly PhoneStateIntentReceiver.

Answer 2

This not yet possible on Android. See this feature request.

You can record your voice from microphone, but you can not record the sound of the other party.