First for the development generate a SHA-1 from debug.keystore: Navigate to C:\Program Files\Java\jdk1.6.0\bin>..... where your bin located then execute below command
C:\Program Files\Java\jdk1.6.0\bin>keytool -v -list -alias androiddebugkey -keystore "D
:debug.keystore" -storepass android -keypass android
or
C:\Program Files\Java\jdk1.6.0\bin>keytool -v -list -alias androiddebugkey -keystore "C:\Documents and Settings\user1\.android\debug.keystore" -storepass android -keypass android
Now, you can get one SHA-1 certificate and generate API key from Google API console. Add this key into your manifest.xml file. remember this API key only for the development. Using this key built apk u can not publish into market.
Now, turn to make your own keystore: execute below command
C:\Program Files\Java\jdk1.6.0\bin>keytool -genkey -v -keystore OWN.keystor
e -alias ALIASNAME -keyalg RSA -keysize 2048 -validity 300000
and give all the required details for this keystore. Now time to generate SHA-1 from your OWN.keystore execute below commnad
C:\Program Files\Java\jdk1.6.0\bin>keytool -v -list -alias ALIASNAME -keystore "C:\Program Files\Java\jdk1.6.0\bin\OWN.keystore" -storepass PASSWORD -keypass KEYPASSWORD
Now, you can get one SHA-1 certificate and generate API key from Google API console. Replace this key into your manifest.xml file. Now your app is ready to publish into market.
This may helpful to you.