I'm new in Android development (for instance I know that in iOS it's not possible).
I know, that to just make a call I need:
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:" + bundle.getString("mobilePhone")));
context.startActivity(intent);
But is it possible to call a phone xxxxxxxxx and then instead of voice the other user should hear a voice file (for instance mp3 file placed in my Android project)? So the only task of the application is to call a number, to play a file and then to stop a call.
Is it possible with Android?