tends FragmentActivity implements
        GooglePlayServicesClient.ConnectionCallbacks,
        GooglePlayServicesClient.OnConnectionFailedListener {
    ...
    &#64;Override
    protected void onCreate(Bundle savedInstanceState) {
        ...
        /*
         * Create a new location client, using the enclosing class to
         * handle callbacks.
         */
        mLocationClient = new LocationClient(this, this, this);
        ...
    }
    ...
    /*
     * Called when the Activity becomes visible.