i have some problem, my app works fine, but when i load it in Play market, maps does not works correctly. I make next:
keytool -list -v -keystore C:\User\Name/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android
When your are creating keystore for creating signed apk you have to do this.
set the password the same like in your created keystore (not android as in debug mode)
keytool -list -v -keystore ~/.android/ YOUR_KEYSTORE -alias YOUR_PROJECT_NAME
more help find here