feat:增加加载中显示

lib/main.dart

@@ -1,11 +1,21 @@
 import 'package:blog_app/pages/home_page.dart';
+import 'package:blog_app/provider/blog.dart';
 import 'package:blog_app/utils/sp_utils.dart';
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await SPUtil.init();
-  runApp(MyApp());
+
+  runApp(
+    MultiProvider(
+      providers: [
+        ChangeNotifierProvider(create: (context) => BlogProvider()),
+      ],
+      child: MyApp(),
+    ),
+  );
 }
 
 class MyApp extends StatelessWidget {