如何在颤动中使用回调作为后台位置

我正在关注这个插件（学习）背景定位器。我以前使用过其他后台位置插件，但它们不再维护。

我正在按照插件描述中描述的教程进行操作，到目前为止这是我的代码。我不确定回调到底是什么以及如何使用它。

到目前为止，这是我的代码，但我没有得到任何结果。

static void backgroundLocationCallBack(LocationDto location) async {
    await BackgroundLocator.initialize();
    await BackgroundLocator.isServiceRunning();
  }

  void getLocationLiveUpdates() async {
    return await BackgroundLocator.registerLocationUpdate(
        backgroundLocationCallBack,
        autoStop: false,
        // disposeCallback: backgroundLocationDisposeCallBack,

        androidSettings: AndroidSettings(
            accuracy: LocationAccuracy.NAVIGATION,
            interval: 5,
            distanceFilter: 0,
            client: LocationClient.google,
            androidNotificationSettings: AndroidNotificationSettings(
              notificationChannelName: 'Location tracking',
              notificationTitle: 'Start Location Tracking',
              notificationMsg: 'Track location in background',
              notificationBigMsg:
                  'Background location is on to keep the app up-tp-date with your location. This is required for main features to work properly when the app is not running.',
              notificationIconColor: Colors.grey,
            )));
  }