注释

Author: CarGuo

lib/common/localization/GSYLocalizationsDelegate.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 import 'package:gsy_github_app_flutter/common/localization/DefaultLocalizations.dart';
 
 /**
+ * 多语言代理
  * Created by guoshuyu
  * Date: 2018-08-15
  */
@@ -14,9 +15,11 @@ class GSYLocalizationsDelegate extends LocalizationsDelegate<GSYLocalizations> {
 
   @override
   bool isSupported(Locale locale) {
+    ///支持中文和英语
     return ['en', 'zh'].contains(locale.languageCode);
   }
 
+  ///根据locale，创建一个对象用于提供当前locale下的文本显示
   @override
   Future<GSYLocalizations> load(Locale locale) {
     return new SynchronousFuture<GSYLocalizations>(new GSYLocalizations(locale));
@@ -27,5 +30,6 @@ class GSYLocalizationsDelegate extends LocalizationsDelegate<GSYLocalizations> {
     return false;
   }
 
+  ///全局静态的代理
   static GSYLocalizationsDelegate delegate = new GSYLocalizationsDelegate();
 }

lib/main.dart

@@ -47,6 +47,7 @@ class FlutterReduxApp extends StatelessWidget {
       store: store,
       child: new StoreBuilder<GSYState>(builder: (context, store) {
         return new MaterialApp(
+            ///多语言实现代理
             localizationsDelegates: [
               GlobalMaterialLocalizations.delegate,
               GlobalWidgetsLocalizations.delegate,
@@ -61,6 +62,7 @@ class FlutterReduxApp extends StatelessWidget {
                 return WelcomePage();
               },
               HomePage.sName: (context) {
+                ///通过 Localizations.override 包裹一层，
                 return new GSYLocalizations(
                   child: new HomePage(),
                 );
@@ -95,6 +97,7 @@ class _GSYLocalizations extends State<GSYLocalizations> {
   @override
   Widget build(BuildContext context) {
     return new StoreBuilder<GSYState>(builder: (context, store) {
+      ///通过 StoreBuilder 和 Localizations 实现实时多语言切换
       return new Localizations.override(
         context: context,
         locale: store.state.locale,