目标

在Flutter项目中实现国际化，支持多种语言。

开发工具

下载IntelliJ IDEA

安装插件：Flutter Intl

安装完成后重启IDE。

使用Intl对项目进行初始化

添加语言

添加内容

修改pubspec.yaml

dependencies:
  flutter:
    sdk: flutter

修改为：

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter

调用

import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'generated/l10n.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      supportedLocales: S.delegate.supportedLocales,
      localizationsDelegates: const [
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
        S.delegate
      ],
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

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

class _MyHomePageState extends State {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              S.of(context).app_name,
            ),
          ],
        ),
      ),
    );
  }
}

关键代码：

import 'package:flutter_localizations/flutter_localizations.dart';
import 'generated/l10n.dart';
S.of(context).app_name

完整代码参考样例

https://gitee.com/lblbc/notepad-multi-lang

关于

厦门大学计算机专业|华为八年高级工程师
专注《零基础学编程系列》 http://lblbc.cn/blog
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