Flutter 中的设备国家/地区

Question

我正在尝试在 Flutter 中获取设备国家/地区（Android）。我使用了本教程，但我认为这是解决我问题的错误方法。

Locale myLocale = Localizations.localeOf(context);
print(myLocale.languageCode.toString() + ' ' + myLocale.countryCode.toString());

基于此，我有几个问题/问题：

• en US即使我将设备语言设置为乌尔都语 - 巴基斯坦，我也总是收到。那么我错过了什么？
• 我想根据设备所在的国家/地区显示某些应用项目，而不是基于语言，因为居住在巴基斯坦且语言设置为英语（美国）的人将获得实际面向美国用户的项目。那么，我应该使用geoLocation并获取经度和纬度并根据该数据做出决定吗？或者有没有其他更简单的方法来获取用户所在的国家/地区？

期待中的感谢。

Answer 1

将这 2 个库添加到 pubspec.yaml

geolocator: ^5.1.1
geocoder: ^0.2.1

然后添加Location访问权限。在这里查看

最后在你想要的地方调用这个方法。

geolocator: ^5.1.1
geocoder: ^0.2.1

Answer 2

尝试这个

import 'dart:io' show Platform;

String localeName = Platform.localeName;

Answer 3

如果您想在不使用“地理定位器”的情况下获取设备国家/地区，因此您不需要获得设备许可，您可以使用以下代码：

  Future<String> getCountry() async{
  Network n = new Network("http://ip-api.com/json");
  locationSTR = (await n.getData());
  locationx = jsonDecode(locationSTR);
  return locationx["country"];
}

网络类代码如下：

import 'dart:convert';
import 'dart:io';

import 'package:http/http.dart' as http;

class Network {
  final String url;

  Network(this.url);

  Future<String> apiRequest(Map jsonMap) async {
    HttpClient httpClient = new HttpClient();
    HttpClientRequest request = await httpClient.postUrl(Uri.parse(url));
    request.headers.set('content-type', 'application/x-www-form-urlencoded');
    request.add(utf8.encode(json.encode(jsonMap)));
    HttpClientResponse response = await request.close();
    // todo - you should check the response.statusCode
    String reply = await response.transform(utf8.decoder).join();
    httpClient.close();
    return reply;
  }

  Future<String> sendData(Map data) async {
    http.Response response = await http.post(url,
        headers: {'Content-Type': 'application/json; charset=UTF-8'},
        body: jsonEncode(data));
    if (response.statusCode == 200)
      return (response.body);
    else
      return 'No Data';
  }

  Future<String> getData() async {
    http.Response response = await http.post(url,
        headers: {'Content-Type': 'application/x-www-form-urlencoded'});
    if (response.statusCode == 200)
      return (response.body);
    else
      return 'No Data';
  }
}

您还可以获得城市和国家/地区代码以及互联网提供商。

Answer 4

请使用包https://pub.dev/packages/devicelocale
我已经用真实设备进行了测试，它工作正常

代码片段

String locale = await Devicelocale.currentLocale;

完整代码

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:devicelocale/devicelocale.dart';

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

/// Demo getting a device locale
class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  List _languages = List();
  String _locale;

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

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    List languages;
    String currentLocale;

    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      languages = await Devicelocale.preferredLanguages;
      print(languages);
    } on PlatformException {
      print("Error obtaining preferred languages");
    }
    try {
      currentLocale = await Devicelocale.currentLocale;
      print(currentLocale);
    } on PlatformException {
      print("Error obtaining current locale");
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _languages = languages;
      _locale = currentLocale;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Column(
            children: <Widget>[
              Text("Current locale: "),
              Text('$_locale'),
              Text("Preferred Languages: "),
              Text(_languages.toString()),

            ],
          )
        ),
      ),
    );
  }
}