getTrafficEnabled method Null safety

Future<bool?> getTrafficEnabled()

获取map是否打开路况图层(在某些Android机型上，路况图无法正常展示)

trafficEnabled 是否打开路况图层

Implementation

Future<bool?> getTrafficEnabled() async {
  return await BMFMapDispatcherFactory.instance.mapGetPropertyDispatcher
      .getTrafficEnabled(_mapChannel);
}