flutter_localizations_1

main.dart

import 'dart:async';

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

import 'i18n.dart';
import 'i18n_delegate.dart';

void main() {
  runApp(
    ExchangeShop(),
  );
}

// このclassでWrapしています
class ExchangeShop extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      localizationsDelegates: [
        const I18nDelegate(),
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      supportedLocales: [
        const Locale("en", "US"),
        const Locale("ja", "JP"),
      ],
      home: ExchangeShopApp(),
    );
  }
}

// titleが多言語化対応できています。
class ExchangeShopApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Center(child: Text(I18n.of(context).title)),
      ),
      body: MapCebu(),
    );
  }
}

// このclassから、本来の自分の実装を始めていきます。
class MapCebu extends StatefulWidget {
  @override
  State<MapCebu> createState() => MapCebuState();
}

class MapCebuState extends State<MapCebu> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    // 現状のLocaleを取得しています
    // locale.toString() == 'ja_JP'という風に使えます
    Locale _locale = Localizations.localeOf(context);
  }
}