ChangeNotifierの実装（メインページ）

lib/main.dart

@@ -1,22 +1,16 @@
 import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
 
-import 'package:chat_flutter/di.dart';
 import 'package:chat_flutter/ui/pages/add_friend.dart';
 import 'package:chat_flutter/ui/pages/create_group.dart';
-import 'package:chat_flutter/ui/pages/main.dart';
-import 'package:chat_flutter/ui/pages/profile_edit.dart';
-import 'package:chat_flutter/ui/pages/profile.dart';
+import 'package:chat_flutter/ui/pages/main/main.dart';
+import 'package:chat_flutter/ui/pages/main/profile/profile_edit.dart';
 import 'package:chat_flutter/ui/pages/room.dart';
 import 'package:chat_flutter/ui/pages/sign_in.dart';
 import 'package:chat_flutter/ui/pages/sign_up.dart';
 
 void main() {
   runApp(
-    MultiProvider(
-      providers: providers,
-      child: MyApp(),
-    ),
+    MyApp(),
   );
 }
 
@@ -32,12 +26,11 @@ class MyApp extends StatelessWidget {
       ),
       initialRoute: '/mainPage',
       routes: {
-        '/mainPage': (context) => MainPage(),
+        '/mainPage': (context) => MainPage.wrapped(),
         '/signUpPage': (context) => SignUpPage(),
         '/signInPage': (context) => SignInPage(),
         '/roomPage': (context) => RoomPage(),
-        '/profilePage': (context) => ProfilePage(),
-        '/profileEditPage': (context) => ProfileEditPage(),
+        '/profileEditPage': (context) => ProfileEditPage.wrapped(),
         '/addFriendPage': (context) => AddFriendPage(),
         '/createGroupPage': (context) => CreateGroupPage(),
       },

lib/providers/user.dart

@@ -1,7 +1,7 @@
 import 'package:chat_flutter/services/user.dart';
 import 'package:flutter/material.dart';
 
-import '../model/user.dart';
+import 'package:chat_flutter/model/user.dart';
 
 class UserProvider with ChangeNotifier {
   UserProvider() {