问在Flutter中更新其他有状态微件时重建有状态微件

EN

class ParentWidget extends StatefulWidget{
        .............
}

class _ParentWidgetState extends State<ParentWidget> {

List markers = [LatLng(0,0)];

@override
  void initState() {
    super.initState();
    updateMarkers();
}

updateMarkers () async {
  updatedMarkers = await getUpdatedMarkers()
  setState((){
    markers = updatedMarkers
  });
  # # print(updatedMarkers)
  # # ^^ prints the correct data that I want to pass in MyMap
}

@override
  Widget build(BuildContext context) {
  return Scaffold(
  ............
  body: MyMap(markers: markers);
 # # The original markers ([LatLng(0,0)]) is the only data getting passed to MyMap
 # # How can I get the updatedMarkers passed to the MyMap widget???????
}