Google Map key in Android?

Question

I am developing an android app in which i have to show map view i have done it once in a previous app but the key i used in the previous is not working int his app . It is just

Answer 1

amandeep there are two kinds of key for maps debug key and release key 
debug key is for your system on which you are developping your application 
that can be used for every application and the seconde one is release key that is different for every application and for each application you have to create new one

http://code.google.com/android/add-ons/google-apis/mapkey.html

Difference between Debug and Signing key