自动清除用户缓存的应用程序更新在android

Is there any method in the android API (ideally for 2.3.6 and onwards) that clears the users cache if they download a new version of an app? Looking around there doesn't seem to be any mention of one - or am I off the ball completely and the cache is emptied when a new version is installed?Is there any method in the android API (ideally