Initialized localization

lib/generated/i18n.dart

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+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+class S {
+  Locale _locale;
+  String _lang;
+
+  S(this._locale) {
+    _lang = getLang(_locale);
+    print(_lang);
+  }
+
+  static final GeneratedLocalizationsDelegate delegate =
+      new GeneratedLocalizationsDelegate();
+
+  static S of(BuildContext context) {
+    var s = Localizations.of<S>(context, S);
+    s._lang = getLang(s._locale);
+    return s;
+  }
+
+}
+
+class en extends S {
+  en(Locale locale) : super(locale);
+}
+class GeneratedLocalizationsDelegate extends LocalizationsDelegate<S> {
+  const GeneratedLocalizationsDelegate();
+
+  List<Locale> get supportedLocales {
+    return [
+      new Locale("en", ""),
+    ];
+  }
+
+  LocaleResolutionCallback resolution({Locale fallback}) {
+    return (Locale locale, Iterable<Locale> supported) {
+      var languageLocale = new Locale(locale.languageCode, "");
+      if (supported.contains(locale))
+        return locale;
+      else if (supported.contains(languageLocale))
+        return languageLocale;
+      else {
+        var fallbackLocale = fallback ?? supported.first;
+        assert(supported.contains(fallbackLocale));
+        return fallbackLocale;
+      }
+    };
+  }
+
+  Future<S> load(Locale locale) {
+    String lang = getLang(locale);
+    switch (lang) {
+      case "en":
+        return new SynchronousFuture<S>(new en(locale));
+      default:
+        return new SynchronousFuture<S>(new S(locale));
+    }
+  }
+
+  bool isSupported(Locale locale) => supportedLocales.contains(getLang(locale));
+
+  bool shouldReload(GeneratedLocalizationsDelegate old) => false;
+}
+
+String getLang(Locale l) =>
+    l.countryCode.isEmpty ? l.languageCode : l.toString();

lib/i18n/REGENERATE.md

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+https://pub.dartlang.org/packages/intl
+
+```
+flutter packages pub run intl_translation:extract_to_arb --output-dir=lib/i18n lib/i18n/strings.dart
+```
+
+To rebuild the i18n files:
+
+```
+flutter packages pub run intl_translation:generate_from_arb \
+  --output-dir=lib/i18n \
+  --no-use-deferred-loading \
+  lib/i18n/*.dart \
+  lib/i18n/*.arb
+```

lib/i18n/en.arb

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+{
+  "appName":"DroidKaigi 2018",
+  "allSessions":"All Sessions",
+  "mySchedule":"My Schedule",
+  "map":"Map",
+  "settings":"Settings",
+  "sponsors":"Sponsors",
+  "questionnaire":"Questionnaire",
+  "about":"About"
+}

lib/i18n/intl_messages.arb

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+{
+  "@@last_modified": "2018-01-15T03:07:11.397592",
+  "appName": "DroidKaigi 2018",
+  "@appName": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "allSessions": "All Sessions",
+  "@allSessions": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "mySchedule": "My Schedule",
+  "@mySchedule": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "map": "Map",
+  "@map": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "settings": "Settings",
+  "@settings": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "sponsors": "Sponsors",
+  "@sponsors": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "questionnaire": "Quesionnaire",
+  "@questionnaire": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "about": "About",
+  "@about": {
+    "type": "text",
+    "placeholders": {}
+  }
+}

lib/i18n/ja.arb

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+{
+  "appName":"DroidKaigi 2018",
+  "allSessions":"すべてのセッション",
+  "mySchedule":"マイスケジュール",
+  "map":"マップ",
+  "settings":"設定",
+  "sponsors":"スポンサー",
+  "questionnaire":"アンケート",
+  "about":"詳細"
+}

lib/i18n/messages_.dart

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+// DO NOT EDIT. This is code generated via package:intl/generate_localized.dart
+// This is a library that provides messages for a  locale. All the
+// messages from the main program should be duplicated here with the same
+// function name.
+
+import 'package:intl/intl.dart';
+import 'package:intl/message_lookup_by_library.dart';
+
+final messages = new MessageLookup();
+
+// ignore: unused_element
+final _keepAnalysisHappy = Intl.defaultLocale;
+
+// ignore: non_constant_identifier_names
+typedef MessageIfAbsent(String message_str, List args);
+
+class MessageLookup extends MessageLookupByLibrary {
+  get localeName => '';
+
+  final messages = _notInlinedMessages(_notInlinedMessages);
+  static _notInlinedMessages(_) => {
+        "about": MessageLookupByLibrary.simpleMessage("詳細"),
+        "allSessions": MessageLookupByLibrary.simpleMessage("すべてのセッション"),
+        "appName": MessageLookupByLibrary.simpleMessage("DroidKaigi 2016"),
+        "map": MessageLookupByLibrary.simpleMessage("マップ"),
+        "mySchedule": MessageLookupByLibrary.simpleMessage("マイスケジュール"),
+        "questionnaire": MessageLookupByLibrary.simpleMessage("アンケート"),
+        "settings": MessageLookupByLibrary.simpleMessage("設定"),
+        "sponsors": MessageLookupByLibrary.simpleMessage("スポンサー")
+      };
+}

lib/i18n/messages_all.dart

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+// DO NOT EDIT. This is code generated via package:intl/generate_localized.dart
+// This is a library that looks up messages for specific locales by
+// delegating to the appropriate library.
+
+import 'dart:async';
+
+import 'package:intl/intl.dart';
+import 'package:intl/message_lookup_by_library.dart';
+import 'package:intl/src/intl_helpers.dart';
+
+import 'messages_.dart' as messages_;
+import 'messages_messages.dart' as messages_messages;
+// ignore: implementation_imports
+
+typedef Future<dynamic> LibraryLoader();
+Map<String, LibraryLoader> _deferredLibraries = {
+  '': () => new Future.value(null),
+  'messages': () => new Future.value(null),
+};
+
+MessageLookupByLibrary _findExact(localeName) {
+  switch (localeName) {
+    case '':
+      return messages_.messages;
+    case 'messages':
+      return messages_messages.messages;
+    case '':
+      return messages_.messages;
+    default:
+      return null;
+  }
+}
+
+/// User programs should call this before using [localeName] for messages.
+Future initializeMessages(String localeName) async {
+  var lib = _deferredLibraries[Intl.canonicalizedLocale(localeName)];
+  await (lib == null ? new Future.value(false) : lib());
+  initializeInternalMessageLookup(() => new CompositeMessageLookup());
+  messageLookup.addLocale(localeName, _findGeneratedMessagesFor);
+}
+
+bool _messagesExistFor(String locale) {
+  try {
+    return _findExact(locale) != null;
+  } catch (e) {
+    return false;
+  }
+}
+
+MessageLookupByLibrary _findGeneratedMessagesFor(locale) {
+  var actualLocale =
+      Intl.verifiedLocale(locale, _messagesExistFor, onFailure: (_) => null);
+  if (actualLocale == null) return null;
+  return _findExact(actualLocale);
+}

lib/i18n/messages_messages.dart

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+// DO NOT EDIT. This is code generated via package:intl/generate_localized.dart
+// This is a library that provides messages for a messages locale. All the
+// messages from the main program should be duplicated here with the same
+// function name.
+
+import 'package:intl/intl.dart';
+import 'package:intl/message_lookup_by_library.dart';
+
+final messages = new MessageLookup();
+
+// ignore: unused_element
+final _keepAnalysisHappy = Intl.defaultLocale;
+
+// ignore: non_constant_identifier_names
+typedef MessageIfAbsent(String message_str, List args);
+
+class MessageLookup extends MessageLookupByLibrary {
+  get localeName => 'messages';
+
+  final messages = _notInlinedMessages(_notInlinedMessages);
+  static _notInlinedMessages(_) => {
+        "about": MessageLookupByLibrary.simpleMessage("About"),
+        "allSessions": MessageLookupByLibrary.simpleMessage("All Sessions"),
+        "appName": MessageLookupByLibrary.simpleMessage("DroidKaigi 2018"),
+        "map": MessageLookupByLibrary.simpleMessage("Map"),
+        "mySchedule": MessageLookupByLibrary.simpleMessage("My Schedule"),
+        "questionnaire": MessageLookupByLibrary.simpleMessage("Quesionnaire"),
+        "settings": MessageLookupByLibrary.simpleMessage("Settings"),
+        "sponsors": MessageLookupByLibrary.simpleMessage("Sponsors")
+      };
+}

lib/i18n/strings.dart

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+import 'dart:async';
+
+import 'package:droidkaigi2018/i18n/messages_all.dart';
+import 'package:flutter/widgets.dart';
+import 'package:intl/intl.dart';
+
+class Strings {
+  static Future<Strings> load(Locale locale) {
+    final String name =
+        locale.countryCode.isEmpty ? locale.languageCode : locale.toString();
+    final String localeName = Intl.canonicalizedLocale(name);
+    return initializeMessages(localeName).then((Null _) {
+      Intl.defaultLocale = localeName;
+      return new Strings();
+    });
+  }
+
+  static Strings of(BuildContext context) {
+    return Localizations.of<Strings>(context, Strings);
+  }
+
+  static final Strings instance = new Strings();
+
+  String get appName => Intl.message("DroidKaigi 2018", name: "appName");
+  String allSessions() => Intl.message("All Sessions", name: "allSessions");
+  String mySchedule() => Intl.message("My Schedule", name: "mySchedule");
+  String map() => Intl.message("Map", name: "map");
+  String settings() => Intl.message("Settings", name: "settings");
+  String sponsors() => Intl.message("Sponsors", name: "sponsors");
+  String questionnaire() => Intl.message("Quesionnaire", name: "questionnaire");
+  String about() => Intl.message("About", name: "about");
+}