You will need to create a file called "apikeys.xml" in res/values to hold keys for the services you use.
E.g.:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="GoogleMapsKey" translatable="false">[google API key]</string>
<string name="WebServiceKey" translatable="false">[Web Service key]</string>
</resources>