One thing I've been doing for a while is using a different key for Google Analytics based on whether I'm developing the application or deploying it to the market. The concept is simple enough, but it does result in a manual step of swapping the keys at deploy time.
The latest release of the ADT includes a new constant that gets set for you depending on the type of build! Now you can query BuildConfig.DEBUG to determine if your build is for development (DEBUG = true) or deployment (DEBUG = false).
I'm using it successfully as follows:
UACODE = (BuildConfig.DEBUG) ? "UA-12345678-1" : "UA-12345678-2"; // Test : Production