如何在Flutter中获取当前的国家/地区代码

Question

我已经尝试通过this获取当前的国家/地区代码。 给我最好的解决方案。

我想在“初始”页面上显示国家标志，所以我需要了解用户国家，这对我来说是必需的。

请帮助我

Answer 1

够了

WidgetsBinding.instance.window.locale.countryCode

Answer 2

您可以使用以下软件包devicelocale

在您的pupspec.yaml中添加依赖项

dependencies:
  devicelocale: ^0.2.1

将其导入所需的班级

import 'package:devicelocale/devicelocale.dart';

然后，您可以使用以下命令将当前设备本地化

String locale = await Devicelocale.currentLocale;

参考文献

• Package
• Github

Answer 3

您只需要编写以下代码。

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    Locale myLocale = Localizations.localeOf(context);
    print(myLocale.languageCode); //You can get locale here...
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}



class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              key: Key('counterKey'),
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ),
    );
  }
}

Answer 4

只需使用内置的Locale类dart即可获取国家/地区代码和语言。

Locale myLocale = Localizations.localeOf(context);

要获取国家/地区代码：

print(myLocale.countryCode);

获取语言代码：

print(myLocale.languageCode);

Answer 5

您可以使用系统区域设置。

final List<Locale> systemLocales = WidgetsBinding.instance.window.locales;
String isoCountryCode = systemLocales.first.countryCode;

Answer 6

您可以使用 country_codes 包：

安装：

dependencies:
  country_codes: ^2.0.1

用法：

await CountryCodes.init(); // Optionally, you may provide a `Locale` to get countrie's localizadName

final Locale deviceLocale = CountryCodes.getDeviceLocale();
print(deviceLocale.languageCode); // Displays en
print(deviceLocale.countryCode); // Displays US

final CountryDetails details = CountryCodes.detailsForLocale();
print(details.alpha2Code); // Displays alpha2Code, for example US.
print(details.dialCode); // Displays the dial code, for example +1.
print(details.name); // Displays the extended name, for example United States.
print(details.localizedName); // Displays the extended name based on device's language (or other, if provided on init)