feat: 将 NormalTheme 的背景颜色和状态栏颜色更新为白色

android/app/src/main/res/values-night-v31/styles.xml

@@ -8,6 +8,7 @@
     </style>
 
     <style name="NormalTheme" parent="@android:style/Theme.Material.Light.NoActionBar">
-        <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowBackground">@android:color/white</item>
+        <item name="android:statusBarColor">@android:color/white</item>
     </style>
 </resources>

android/app/src/main/res/values-night/styles.xml

@@ -13,6 +13,7 @@
 
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
-        <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowBackground">@android:color/white</item>
+        <item name="android:statusBarColor">@android:color/white</item>
     </style>
 </resources>

android/app/src/main/res/values-v31/styles.xml

@@ -8,6 +8,7 @@
     </style>
 
     <style name="NormalTheme" parent="@android:style/Theme.Material.Light.NoActionBar">
-        <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowBackground">@android:color/white</item>
+        <item name="android:statusBarColor">@android:color/white</item>
     </style>
 </resources>

android/app/src/main/res/values/styles.xml

@@ -13,6 +13,7 @@
 
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
-        <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowBackground">@android:color/white</item>
+        <item name="android:statusBarColor">@android:color/white</item>
     </style>
 </resources>

lib/main.dart

@@ -19,7 +19,7 @@ Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   SystemChrome.setSystemUIOverlayStyle(
     const SystemUiOverlayStyle(
-      statusBarColor: Colors.transparent,
+      statusBarColor: Colors.white,
       statusBarIconBrightness: Brightness.dark,
       systemNavigationBarColor: _shellBackground,
       systemNavigationBarIconBrightness: Brightness.dark,
@@ -76,7 +76,7 @@ class ImWebViewApp extends StatelessWidget {
       debugShowCheckedModeBanner: false,
       theme: ThemeData(
         colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF1F6FEB)),
-        scaffoldBackgroundColor: _shellBackground,
+        scaffoldBackgroundColor: Colors.white,
         useMaterial3: true,
       ),
       home: H5ShellPage(initialShellBranding: shellBranding),