I am novice in Google maps. Just followed this link http://www.androidhive.info/2013/08/android-working-with-google-maps-v2/ when I am launching my app, follwing error is coming
Probably You forgot to add your google_api_key you must add your key for use this service
You should add your key too AndroidManifest.xml
like this.
I hope this is help you