为什么我没有得到实际的纬度和经度？纬度：“LOCATION”.latitude 的实例和经度：“LOCATION”.longitude 的实例

Question

为什么我在尝试获取实际的纬度和经度时会获取纬度实例和经度实例？这里我使用的是flutter的geolocator包。请有人帮助我，您的努力将不胜感激。

location.dart

import 'package:geolocator/geolocator.dart';

class LOCATION {
  double latitued = 0.0;
  double longitude = 0.0;
  Future<void> getCurrentLocation() async {
    try {
      Position currentPosition;
      currentPosition = await Geolocator.getCurrentPosition(
          desiredAccuracy: LocationAccuracy.low);
      latitued = currentPosition.latitude;
      longitude = currentPosition.longitude;
    } catch (e) {
      print(e);
    }
  }
}

loading_screen.dart

import 'package:flutter/material.dart';
import 'package:clima_v1/services/location.dart';
import 'package:http/http.dart';

class LoadingScreen extends StatefulWidget {
  @override
  _LoadingScreenState createState() => _LoadingScreenState();
}

class _LoadingScreenState extends State<LoadingScreen> {
  void getLocation_v1() async {
    LOCATION location = LOCATION();
    await location.getCurrentLocation();
    print('Latitude: $location.latitude and Longitude: $location.longitude');
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            //Get the current location
            getLocation_v1();
          },
          child: Text('Get Location'),
        ),
      ),
    );
  }
}

输出：

I/flutter ( 9688): Latitude: Instance of 'LOCATION'.latitude and Longitude: Instance of 'LOCATION'.longitude

Answer 1

您应该使用大括号：

print('Latitude: ${location.latitude} and Longitude: ${location.longitude}');

否则，您只是打印 location，而不是 location.latitude。