登录流程已全部重构

lib/l10n/app_localizations.dart

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+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:intl/intl.dart' as intl;
+
+import 'app_localizations_en.dart';
+import 'app_localizations_zh.dart';
+
+// ignore_for_file: type=lint
+
+/// Callers can lookup localized strings with an instance of AppLocalizations
+/// returned by `AppLocalizations.of(context)`.
+///
+/// Applications need to include `AppLocalizations.delegate()` in their app's
+/// `localizationDelegates` list, and the locales they support in the app's
+/// `supportedLocales` list. For example:
+///
+/// ```dart
+/// import 'l10n/app_localizations.dart';
+///
+/// return MaterialApp(
+///   localizationsDelegates: AppLocalizations.localizationsDelegates,
+///   supportedLocales: AppLocalizations.supportedLocales,
+///   home: MyApplicationHome(),
+/// );
+/// ```
+///
+/// ## Update pubspec.yaml
+///
+/// Please make sure to update your pubspec.yaml to include the following
+/// packages:
+///
+/// ```yaml
+/// dependencies:
+///   # Internationalization support.
+///   flutter_localizations:
+///     sdk: flutter
+///   intl: any # Use the pinned version from flutter_localizations
+///
+///   # Rest of dependencies
+/// ```
+///
+/// ## iOS Applications
+///
+/// iOS applications define key application metadata, including supported
+/// locales, in an Info.plist file that is built into the application bundle.
+/// To configure the locales supported by your app, you’ll need to edit this
+/// file.
+///
+/// First, open your project’s ios/Runner.xcworkspace Xcode workspace file.
+/// Then, in the Project Navigator, open the Info.plist file under the Runner
+/// project’s Runner folder.
+///
+/// Next, select the Information Property List item, select Add Item from the
+/// Editor menu, then select Localizations from the pop-up menu.
+///
+/// Select and expand the newly-created Localizations item then, for each
+/// locale your application supports, add a new item and select the locale
+/// you wish to add from the pop-up menu in the Value field. This list should
+/// be consistent with the languages listed in the AppLocalizations.supportedLocales
+/// property.
+abstract class AppLocalizations {
+  AppLocalizations(String locale)
+    : localeName = intl.Intl.canonicalizedLocale(locale.toString());
+
+  final String localeName;
+
+  static AppLocalizations? of(BuildContext context) {
+    return Localizations.of<AppLocalizations>(context, AppLocalizations);
+  }
+
+  static const LocalizationsDelegate<AppLocalizations> delegate = _AppLocalizationsDelegate();
+
+  /// A list of this localizations delegate along with the default localizations
+  /// delegates.
+  ///
+  /// Returns a list of localizations delegates containing this delegate along with
+  /// GlobalMaterialLocalizations.delegate, GlobalCupertinoLocalizations.delegate,
+  /// and GlobalWidgetsLocalizations.delegate.
+  ///
+  /// Additional delegates can be added by appending to this list in
+  /// MaterialApp. This list does not have to be used at all if a custom list
+  /// of delegates is preferred or required.
+  static const List<LocalizationsDelegate<dynamic>> localizationsDelegates =
+      <LocalizationsDelegate<dynamic>>[
+        delegate,
+        GlobalMaterialLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+      ];
+
+  /// A list of this localizations delegate's supported locales.
+  static const List<Locale> supportedLocales = <Locale>[
+    Locale('en'),
+    Locale('zh'),
+  ];
+
+  /// No description provided for @welcome_title.
+  ///
+  /// In zh, this message translates to:
+  /// **'成分一目了然'**
+  String get welcome_title;
+
+  /// No description provided for @welcome_desc.
+  ///
+  /// In zh, this message translates to:
+  /// **'自动识别食物成分，营养与风险一手掌握'**
+  String get welcome_desc;
+
+  /// No description provided for @welcome_button_text.
+  ///
+  /// In zh, this message translates to:
+  /// **'开始使用'**
+  String get welcome_button_text;
+
+  /// No description provided for @login_title.
+  ///
+  /// In zh, this message translates to:
+  /// **'欢迎来到FoodCura'**
+  String get login_title;
+
+  /// No description provided for @login_email_hint.
+  ///
+  /// In zh, this message translates to:
+  /// **'请输入邮箱'**
+  String get login_email_hint;
+
+  /// No description provided for @login_password_hint.
+  ///
+  /// In zh, this message translates to:
+  /// **'请输入密码'**
+  String get login_password_hint;
+
+  /// No description provided for @login_button.
+  ///
+  /// In zh, this message translates to:
+  /// **'登录'**
+  String get login_button;
+
+  /// No description provided for @login_tip_start.
+  ///
+  /// In zh, this message translates to:
+  /// **'注册或登录即表示您了解并同意'**
+  String get login_tip_start;
+
+  /// No description provided for @login_privacy.
+  ///
+  /// In zh, this message translates to:
+  /// **'隐私协议'**
+  String get login_privacy;
+
+  /// No description provided for @login_terms.
+  ///
+  /// In zh, this message translates to:
+  /// **'服务条款'**
+  String get login_terms;
+
+  /// No description provided for @login_and.
+  ///
+  /// In zh, this message translates to:
+  /// **'和'**
+  String get login_and;
+
+  /// No description provided for @login_other_login.
+  ///
+  /// In zh, this message translates to:
+  /// **'其他登录方式'**
+  String get login_other_login;
+
+  /// No description provided for @login_error_text.
+  ///
+  /// In zh, this message translates to:
+  /// **'登录失败'**
+  String get login_error_text;
+
+  /// No description provided for @code_title.
+  ///
+  /// In zh, this message translates to:
+  /// **'输入验证码'**
+  String get code_title;
+
+  /// No description provided for @code_tip.
+  ///
+  /// In zh, this message translates to:
+  /// **'验证码已发送至'**
+  String get code_tip;
+
+  /// No description provided for @code_send_code.
+  ///
+  /// In zh, this message translates to:
+  /// **'重新发送'**
+  String get code_send_code;
+
+  /// No description provided for @code_success.
+  ///
+  /// In zh, this message translates to:
+  /// **'发送成功'**
+  String get code_success;
+
+  /// No description provided for @code_error.
+  ///
+  /// In zh, this message translates to:
+  /// **'验证失败'**
+  String get code_error;
+}
+
+class _AppLocalizationsDelegate extends LocalizationsDelegate<AppLocalizations> {
+  const _AppLocalizationsDelegate();
+
+  @override
+  Future<AppLocalizations> load(Locale locale) {
+    return SynchronousFuture<AppLocalizations>(lookupAppLocalizations(locale));
+  }
+
+  @override
+  bool isSupported(Locale locale) => <String>['en', 'zh'].contains(locale.languageCode);
+
+  @override
+  bool shouldReload(_AppLocalizationsDelegate old) => false;
+}
+
+AppLocalizations lookupAppLocalizations(Locale locale) {
+  // Lookup logic when only language code is specified.
+  switch (locale.languageCode) {
+    case 'en':
+      return AppLocalizationsEn();
+    case 'zh':
+      return AppLocalizationsZh();
+  }
+
+  throw FlutterError(
+    'AppLocalizations.delegate failed to load unsupported locale "$locale". This is likely '
+    'an issue with the localizations generation tool. Please file an issue '
+    'on GitHub with a reproducible sample app and the gen-l10n configuration '
+    'that was used.',
+  );
+}