在Flutter中获取基于纬度和经度的完整地址详细信息

Question

我在 flutter 中使用了 location插件，我只能获得latitude和longitude。如何获取完整的地址详细信息。代码在下面。

Future<Map<String, double>> _getLocation() async {
//var currentLocation = <String, double>{};
Map<String,double> currentLocation;
try {
  currentLocation = await location.getLocation();
} catch (e) {
  currentLocation = null;
}
setState(() {
  userLocation = currentLocation;
});
return currentLocation;



}

Answer 1

您需要使用“反向地理编码”服务，例如Google的API：https://developers.google.com/maps/documentation/geocoding/start。还有其他...只是谷歌的“地理编码”。

更新：显然也有本地API。参见：https://pub.dartlang.org/packages/geocoder

Answer 2

在pubspec.yaml

中

geolocator: '^5.1.1'
  geocoder: ^0.2.1

导入此软件包

import 'package:geolocator/geolocator.dart';
import 'package:geocoder/geocoder.dart';


_getLocation() async
      {
        Position position = await Geolocator().getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
        debugPrint('location: ${position.latitude}');
        final coordinates = new Coordinates(position.latitude, position.longitude);
        var addresses = await Geocoder.local.findAddressesFromCoordinates(coordinates);
        var first = addresses.first;
        print("${first.featureName} : ${first.addressLine}");
      }

Answer 3

使用Geocoder插件，您可以从经度和经度获得地址

getUserLocation() async {//call this async method from whereever you need

      Map<String, double> currentLocation = new Map();
      Map<String, double> myLocation;
      String error;
      Location location = new Location();
      try {
        myLocation = await location.getLocation();
      } on PlatformException catch (e) {
        if (e.code == 'PERMISSION_DENIED') {
          error = 'please grant permission';
          print(error);
        }
        if (e.code == 'PERMISSION_DENIED_NEVER_ASK') {
          error = 'permission denied- please enable it from app settings';
          print(error);
        }
        myLocation = null;
      }
      currentLocation = myLocation;
      final coordinates = new Coordinates(
          currentLocation['latitude'], currentLocation['longitude']);
      var addresses = await Geocoder.local.findAddressesFromCoordinates(
          coordinates);
      var first = addresses.first;
      print(' ${first.locality}, ${first.adminArea},${first.subLocality}, ${first.subAdminArea},${first.addressLine}, ${first.featureName},${first.thoroughfare}, ${first.subThoroughfare}');
      return first;
    }

Answer 4

`
import 'package:flutter/material.dart';
import 'package:geocoder/geocoder.dart';
import 'package:geolocator/geolocator.dart';

_getLocation() async {
GeolocationStatus geolocationStatus = await 
Geolocator().checkGeolocationPermissionStatus();

Position position = await Geolocator()
    .getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
debugPrint('location: ${position.latitude}');


final coordinates = new Coordinates(position.latitude, position.longitude);
debugPrint('coordinates is: $coordinates');

var addresses =
    await Geocoder.local.findAddressesFromCoordinates(coordinates);
var first = addresses.first;
// print number of retured addresses 
debugPrint('${addresses.length}');
// print the best address
debugPrint("${first.featureName} : ${first.addressLine}");
//print other address names
debugPrint(Country:${first.countryName} AdminArea:${first.adminArea} SubAdminArea:${first.subAdminArea}");
//print more address names
debugPrint(Locality:${first.locality}: Sublocality:${first.subLocality}");
}

`

Answer 5

这是使用 Google API 从当前位置或任何纬度和经度获取地址的最简单方法。

您必须从 Goole 控制台生成 Goole Map API 密钥 [需要登录] Generate API Key From Here

  getAddressFromLatLng(context, double lat, double lng) async {
    String _host = 'https://maps.google.com/maps/api/geocode/json';
    final url = '$_host?key=$mapApiKey&language=en&latlng=$lat,$lng';
    if(lat != null && lng != null){
      var response = await http.get(Uri.parse(url));
      if(response.statusCode == 200) {
        Map data = jsonDecode(response.body);
        String _formattedAddress = data["results"][0]["formatted_address"];
        print("response ==== $_formattedAddress");
        return _formattedAddress;
      } else return null;
    } else return null;
  }