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

Map Key is Only restricted to a Single Machine as it includes Java libraries, JDK and all, so debug.keystore is also a single file and by this you will always get a UNIQUE Map Key.

You will have to Generatea new Map Key only when you Shift your Machine(CPU) or reinstall your OS.

Another advice to Just remove code of Overlay and just Check it again is it working fine. Or there is a problem in Overlay Class. Clean and Rebuild the Application.

Hope you have given these permissions also.