Android voice call recorder

Hi all I am looking for any API or lines of codes that can guide me how I can record android incoming and outgoing call ? I read some discussion from Is there any API supported by Android for recording phone call? and http://code.google.com/p/android/issues/detail?id=2117#c226 where they guide its not possible to record android calls due to device limitations etc.I also explore android auto answer app that's on http://code.google.com/p/auto-answer/ 开发者_StackOverflow中文版but this app also do auto ans by following different option like ringing call duration etc.any one can guide in detail how i can record twoway voice ?how i can detect it call is answer,reject by caller and receiver person ?thanks