街道地址未更新 onCameraMove 谷歌地图 Flutter

Question

每当谷歌 map 相机在我的 Flutter 应用程序上移动时，我都会尝试显示更新的地址。

不幸的是，加载 map 时仅显示当前位置地址，并且当移动相机时，TextEditingController _addressController.text中显示的地址没有更新。

我的代码：

import 'package:flutter/material.dart';
import 'package:geocoding/geocoding.dart';
import 'package:geolocator/geolocator.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

class GMaps2 extends StatefulWidget {
  const GMaps2({Key? key}) : super(key: key);

  @override
  State<GMaps2> createState() => _GMaps2State();
}

class _GMaps2State extends State<GMaps2> {
  TextEditingController _addressController = TextEditingController();
  GoogleMapController? _googleMapController;
  CameraPosition _cameraPosition = CameraPosition(target: LatLng(0, 0));
  LatLng _latlong = LatLng(0, 0);

  Future<Position> getCurrentLocation() async {
    bool serviceEnabled;
    LocationPermission permission;

    serviceEnabled =
        await GeolocatorPlatform.instance.isLocationServiceEnabled();
    if (!serviceEnabled) {
      await GeolocatorPlatform.instance.openLocationSettings();
      return Future.error('Location services are disabled.');
    }

    permission = await GeolocatorPlatform.instance.checkPermission();
    if (permission == LocationPermission.denied) {
      permission = await GeolocatorPlatform.instance.requestPermission();
      if (permission == LocationPermission.denied) {
        return Future.error('Location permissions are denied');
      }
    }
    if (permission == LocationPermission.deniedForever) {
      return Future.error(
          'Location permissions are permanently denied, we cannot request permissions.');
    }

    position = await GeolocatorPlatform.instance.getCurrentPosition(
        locationSettings:
            const LocationSettings(accuracy: LocationAccuracy.high));

    setState(() {
      _latlong = LatLng(position.latitude, position.longitude);
      _googleMapController!.animateCamera(CameraUpdate.newCameraPosition(
          CameraPosition(target: _latlong, zoom: 15)));
      getAddress();
    });

    return position;
  }

  Position position = Position(
    longitude: 0,
    latitude: 0,
    timestamp: DateTime.now(),
    accuracy: 0,
    altitude: 0,
    heading: 0,
    speed: 0,
    speedAccuracy: 0,
  );
  List<Placemark>? placeMarks;

  getAddress() async {
    placeMarks =
        await placemarkFromCoordinates(_latlong.latitude, _latlong.longitude);
    Placemark placemark = placeMarks![0];
    _addressController.text =
        "${placemark.street}, ${placemark.subLocality}, ${placemark.locality}, ${placemark.subAdministrativeArea}, ${placemark.postalCode}, ${placemark.country}";
  }

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

  //LatLng newLatlong = LatLng(0, 0);

  @override
  Widget build(BuildContext context) {
    double screenWidth = MediaQuery.of(context).size.width;
    double screenHeight = MediaQuery.of(context).size.height;

    return SafeArea(
      child: Scaffold(
        body: Column(
          children: [
            SizedBox(
              width: screenWidth,
              height: screenHeight * 0.4,
              child: GoogleMap(
                initialCameraPosition: _cameraPosition,
                onMapCreated: (controller) {
                  setState(() {
                    _googleMapController = controller;
                    getAddress();
                  });
                },
                onCameraMove: (CameraPosition cameraposition) {
                  position = Position(
                      longitude: cameraposition.target.latitude,
                      latitude: cameraposition.target.longitude,
                      timestamp: DateTime.now(),
                      accuracy: 0,
                      altitude: 0,
                      heading: 0,
                      speed: 0,
                      speedAccuracy: 0);

                  setState(() {
                    _latlong = LatLng(position.latitude, position.longitude);
                    print("${_latlong.latitude}, ${_latlong.longitude}");
                    print(_addressController.text);
                    getAddress();
                    //getMovedAddress(cameraposition);
                  });
                },
              ),
            ),
            const SizedBox(
              height: 10,
            ),
            Container(
              child: TextField(
                controller: _addressController,
                style: const TextStyle(
                  fontSize: 12,
                  color: Colors.black,
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

我的代码有什么问题导致地址无法更新以及如何解决？