private static void initialize() {
        final Context context = CgeoApplication.getInstance();
        if (GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(context) == ConnectionResult.SUCCESS) {
            isGooglePlayServicesAvailable = true;
        }
        initialized = true;
    }
cache the result of querying for play services
main/src/main/java/cgeo/geocaching/playservices/GooglePlayServices.java