Flutter 如何使用地理定位器包获取纬度、经度？

Question

Flutter how to get latitude, longitude using geolocator package? Already gave permissions both android and ios, downloaded package using pubspec.yaml. I don't understand why can't print longitude and latitude to console? tried write print(position), print(position.longitude()), print(position.latitue()).

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


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

class _LoadingScreenState extends State<LoadingScreen> {
 void getLocation() async {
   print('Printing text before getCurrentLocation()');
   Position position = await Geolocator.getCurrentPosition(desiredAccuracy: LocationAccuracy.low);
   print(position);


}

 @override
 Widget build(BuildContext context) {
   return Scaffold(
     body: Center(
       child: RaisedButton(
         color: Colors.red,
         onPressed: () {
           getLocation();
         },
         child: Text('Get Location'),
       ),
     ),
   );
 }
} ```

Answer 1

应该是position.latitude或者position.longitude。您使用了 position.longitude() & position.latitude()，这是不正确的。

此外，您需要为 onPressed 回调添加 async-await。我假设您已经在清单中添加了权限并授予了必要的权限。

方法

void getLocation() async {
   Position position = await Geolocator.getCurrentPosition(desiredAccuracy: LocationAccuracy.low);
   print(position.latitude);
   print(position.longitude);
}

小部件

RaisedButton(
    color: Colors.red,
    onPressed: () async {
        await getLocation();
    },
    child: Text('Get Location'),
),