MapView is no working in my APP

Hi All,

I am developing an application in which i include Mapview in currentWindow.. first time it is working. but when i want to see ot again it throws an exception.

java.lang.IllegalStateException: MapView already created. Android can support one MapView per Application.

I am having logical back button in my application. when press that i want to remove my current map_view.

please help me out for this..

Thanks in advance.