From

http://wptrafficanalyzer.in/blog/android-checking-the-availability-of-google-play-services-for-google-map-android-api-v2/

	public static boolean isGooglePlayServiceAvailable (Context context) {
		int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(context);
		if (status == ConnectionResult.SUCCESS) {
			Log.e("YXH", "GooglePlayServicesUtil service is available.");
			return true;
		} else {
			Log.e("YXH", "GooglePlayServicesUtil service is NOT available.");
			return false;
		}
	}