sqllite database save magnetic declination data

lib/main.dart

@@ -10,17 +10,7 @@ import 'package:provider/provider.dart';
 void main() {
   ///屏幕刷新率和显示率不一致时的优化
   // GestureBinding.instance.resamplingEnabled = true;
-  runApp(
-    MultiProvider(
-      providers: [
-        ChangeNotifierProvider(
-          create: (context) => RegionProvider(),
-        ),
-        ChangeNotifierProvider(create: (context) => TokenProvider()),
-      ],
-      child: const MyApp(),
-    ),
-  );
+  runApp(const MyApp());
 }
 
 class MyApp extends StatelessWidget {
@@ -29,23 +19,31 @@ class MyApp extends StatelessWidget {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: '风水罗盘',
-      theme: ThemeData(
-        primarySwatch: createMaterialColor(const Color(0xCFA77300)),
+    return MultiProvider(
+      providers: [
+        ChangeNotifierProvider(
+          create: (context) => RegionProvider(),
+        ),
+        ChangeNotifierProvider(create: (context) => TokenProvider()),
+      ],
+      child: MaterialApp(
+        title: '风水罗盘',
+        theme: ThemeData(
+          primarySwatch: createMaterialColor(const Color(0xCFA77300)),
+        ),
+        debugShowCheckedModeBanner: false,
+        home: const BottomNavigationWidget(),
+        localizationsDelegates: const [
+          GlobalMaterialLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+        ],
+        supportedLocales: const [
+          //此处
+          Locale('zh'),
+          Locale('en'),
+        ],
       ),
-      debugShowCheckedModeBanner: false,
-      home: const BottomNavigationWidget(),
-      localizationsDelegates: const [
-        GlobalMaterialLocalizations.delegate,
-        GlobalWidgetsLocalizations.delegate,
-        GlobalCupertinoLocalizations.delegate,
-      ],
-      supportedLocales: const [
-        //此处
-        Locale('zh'),
-        Locale('en'),
-      ],
     );
   }
 }