title: Get which pressed by a incoming caller on Android
body: <p>I was trying to make an android based voice response system (IVR) with a program. Please tell me how to get the keys pressed by the caller of an incoming call. </p>
  
  <p>Suppose he press 1 I have to play a music. if he press 2 I have to play him a recorded message. like that. (like press 1 for English, Press 2 for French. like that)</p>
  
  <p>One thing is for sure that we will get different key tones if he press different keys in his mobile, or land phone during the call.</p>