Hey guys…
Since your Google Maps API key is bound to a specific URL, in order to
access map services you need to setup a proxy server that will receive
HTTP requests from the mobile application and forward them to Google
Maps REST URLs, returning Google responses to mobile clients.
If u need answer to all ur questions regarding usage of google maps
then check this link:
http://wiki.forum.nokia.com/index.php/How_to_use_Google_Maps_data_in_mobile_applications