flutter Gps获取手机当前所在地

flutter Gps获取手机当前所在地
使用geolocator库
该实例版本：geolocator: ^5.1.3
在模拟器运行会有报错，建议在真机运行

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


void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
    
    
  @override
  Widget build(BuildContext context) {
    
    
    return MaterialApp(
      title: 'GPS',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
    
    
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
    
    
  final Geolocator geolocator = Geolocator()..forceAndroidLocationManager;

  Position _currentPosition;
  String _currentAddress;

  @override
  Widget build(BuildContext context) {
    
    
    return Scaffold(
      appBar: AppBar(
        title: Text("Location"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            if (_currentPosition != null) Text(_currentAddress),
            RaisedButton(
              child: Text("Get location"),
              color: Theme.of(context).primaryColor,//主题颜色

              textColor: Colors.white,
              onPressed: () {
    
    
                _getCurrentLocation();
              },
            ),
          ],
        ),
      ),
    );
  }

  _getCurrentLocation() {
    
    
    geolocator
        .getCurrentPosition(desiredAccuracy: LocationAccuracy.best)
        .then((Position position) {
    
    
      setState(() {
    
    
        _currentPosition = position;
      });

      _getAddressFromLatLng();
    }).catchError((e) {
    
    
      print(e);
    });
  }

  _getAddressFromLatLng() async {
    
    
    try {
    
    
      List<Placemark> p = await geolocator.placemarkFromCoordinates(
          _currentPosition.latitude, _currentPosition.longitude);

      Placemark place = p[0];

      setState(() {
    
    
        _currentAddress =
        "${place.locality},${place.country}";
      });
    } catch (e) {
    
    
      print(e);
    }
  }
}