diff --git a/lib/containers/chat_list.dart b/lib/containers/chat_list.dart
index 90d3f65..f8020a8 100644
--- a/lib/containers/chat_list.dart
+++ b/lib/containers/chat_list.dart
@@ -1,7 +1,7 @@
 import 'dart:io';
 
 import 'package:dynamic_theme/helpers/colors.dart';
-import 'package:dynamic_theme/helpers/textThemeStyle.dart';
+import 'package:dynamic_theme/helpers/text_theme_style.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
diff --git a/lib/containers/entrance.dart b/lib/containers/entrance.dart
index 5c18821..f4f05cc 100644
--- a/lib/containers/entrance.dart
+++ b/lib/containers/entrance.dart
@@ -102,7 +102,7 @@ class _EntranceState extends State<Entrance> {
                 children: <Widget>[
                   const Home(),
                   const Discovery(),
-                  Order(),
+                  const Order(),
                   Mine(
                     options: widget.options ?? Options(),
                     handleOptionsChanged: widget.handleOptionsChanged,
diff --git a/lib/containers/home.dart b/lib/containers/home.dart
index d029dd4..46b1fdd 100644
--- a/lib/containers/home.dart
+++ b/lib/containers/home.dart
@@ -132,7 +132,7 @@ class _HomeState extends State<Home> {
               SliverList(
                 delegate: SliverChildBuilderDelegate(
                   (context, index) {
-                    if (index == 0) return SizedBox(height: 15.0);
+                    if (index == 0) return const SizedBox(height: 15.0);
                     return AvatarWrapBox(
                       key: Key('item_$index'),
                       onTap: () => Navigator.of(context).pushNamed(ChatList.routeName),
diff --git a/lib/containers/mine.dart b/lib/containers/mine.dart
index b535423..6849938 100644
--- a/lib/containers/mine.dart
+++ b/lib/containers/mine.dart
@@ -8,9 +8,10 @@ class Mine extends StatefulWidget {
   final Options? options;
   final Function? handleOptionsChanged;
   const Mine({
+    Key? key,
     this.handleOptionsChanged,
     this.options,
-  });
+  }) : super(key: key);
 
   static Map<String, String> languageMap = {'zh': '汉语', 'en': 'English'};
 
@@ -24,7 +25,7 @@ class _MineState extends State<Mine> {
     Navigator.pushNamed(
       context,
       '/newView5',
-      arguments: NewView(
+      arguments: const NewView(
         content: '网络搜索结果汉语- 维基百科，自由的百科全书',
       ),
     );
@@ -51,7 +52,7 @@ class _MineState extends State<Mine> {
                     'Flutter: Dynamic Theming | Change Theme At Runtime',
                     style: Theme.of(context).textTheme.bodyText2,
                   ),
-                  ButtonColor(),
+                  const ButtonColor(),
                   TextButton(
                     onPressed: () => _launchRouter(context),
                     child: Text(
@@ -83,12 +84,12 @@ class _MineState extends State<Mine> {
                     onPressed: () {
                       if (language == 'zh') {
                         widget.handleOptionsChanged!(
-                          widget.options!.copyWith(locale: Locale('en')),
+                          widget.options!.copyWith(locale: const Locale('en')),
                         );
                         return;
                       }
                       widget.handleOptionsChanged!(
-                        widget.options!.copyWith(locale: Locale('zh')),
+                        widget.options!.copyWith(locale: const Locale('zh')),
                       );
                     },
                     child: Text(
@@ -110,6 +111,7 @@ class _MineState extends State<Mine> {
 }
 
 class ButtonColor extends StatefulWidget {
+  const ButtonColor({Key? key}) : super(key: key);
   @override
   _ButtonColorState createState() => _ButtonColorState();
 }
diff --git a/lib/containers/new_view.dart b/lib/containers/new_view.dart
index 865bbfd..627a160 100644
--- a/lib/containers/new_view.dart
+++ b/lib/containers/new_view.dart
@@ -27,13 +27,13 @@ class _NewViewState extends State<NewView> with RouteAware {
   @override
   void didPopNext() {
     // Covering route was popped off the navigator.
-    print('返回NewView');
+    debugPrint('返回NewView');
   }
 
   @override
   void didPush() {
     // Route was pushed onto navigator and is now topmost route.
-    print('进入NewView');
+    debugPrint('进入NewView');
   }
 
   @override
@@ -48,7 +48,7 @@ class _NewViewState extends State<NewView> with RouteAware {
 
     return CupertinoPageScaffold(
       navigationBar: CupertinoNavigationBar(
-        padding: EdgeInsetsDirectional.only(),
+        padding: const EdgeInsetsDirectional.only(),
         transitionBetweenRoutes: Platform.isIOS,
         middle: Text(
           'NewList-${param.content}',
@@ -81,7 +81,7 @@ class _NewViewState extends State<NewView> with RouteAware {
                   splashColor: Colors.transparent,
                   onTap: () => Navigator.of(context).pushNamed(
                     Detail.routeName,
-                    arguments: Detail(value: 'NewView参数'),
+                    arguments: const Detail(value: 'NewView参数'),
                   ),
                   child: SizedBox(
                     height: 44.0,
diff --git a/lib/containers/order.dart b/lib/containers/order.dart
index 7a7baf3..9c67681 100644
--- a/lib/containers/order.dart
+++ b/lib/containers/order.dart
@@ -53,7 +53,7 @@ class _OrderState extends State<Order> {
 }
 
 class OrderCard extends StatelessWidget {
-  const OrderCard();
+  const OrderCard({Key? key}):super(key: key);
   @override
   Widget build(BuildContext context) {
     return Container(
diff --git a/lib/helpers/textThemeStyle.dart b/lib/helpers/text_theme_style.dart
similarity index 100%
rename from lib/helpers/textThemeStyle.dart
rename to lib/helpers/text_theme_style.dart
diff --git a/lib/widgets/common/dialog_box.dart b/lib/widgets/common/dialog_box.dart
index ea14703..92c0365 100644
--- a/lib/widgets/common/dialog_box.dart
+++ b/lib/widgets/common/dialog_box.dart
@@ -1,5 +1,5 @@
 import 'package:dynamic_theme/helpers/colors.dart';
-import 'package:dynamic_theme/helpers/textThemeStyle.dart';
+import 'package:dynamic_theme/helpers/text_theme_style.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
@@ -48,7 +48,7 @@ class DialogBox extends StatelessWidget {
 
 class BottomButton extends StatelessWidget {
   final bool cancelButton;
-  const BottomButton({this.cancelButton = false});
+  const BottomButton({Key? key, this.cancelButton = false}) : super(key: key);
 
   Widget _buttonWidget(BuildContext context) {
     if (cancelButton) {
diff --git a/lib/widgets/common/refresh_footer.dart b/lib/widgets/common/refresh_footer.dart
index 859a4b3..17cd93e 100644
--- a/lib/widgets/common/refresh_footer.dart
+++ b/lib/widgets/common/refresh_footer.dart
@@ -1,7 +1,7 @@
 import 'dart:math';
 
 import 'package:dynamic_theme/helpers/colors.dart';
-import 'package:dynamic_theme/helpers/textThemeStyle.dart';
+import 'package:dynamic_theme/helpers/text_theme_style.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_easyrefresh/easy_refresh.dart';
 
@@ -97,7 +97,7 @@ class RefreshFooter extends Footer {
         loadIndicatorExtent: loadIndicatorExtent,
         axisDirection: axisDirection,
         float: float,
-        completeDuration: completeDuration ?? Duration(milliseconds: 300),
+        completeDuration: completeDuration ?? const Duration(milliseconds: 300),
         enableInfiniteLoad: enableInfiniteLoad,
         success: success,
         noMore: noMore,
diff --git a/lib/widgets/common/refresh_header.dart b/lib/widgets/common/refresh_header.dart
index 71b375a..24f47f9 100644
--- a/lib/widgets/common/refresh_header.dart
+++ b/lib/widgets/common/refresh_header.dart
@@ -1,7 +1,7 @@
 import 'dart:async';
 import 'dart:math';
 import 'package:dynamic_theme/helpers/colors.dart';
-import 'package:dynamic_theme/helpers/textThemeStyle.dart';
+import 'package:dynamic_theme/helpers/text_theme_style.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_easyrefresh/easy_refresh.dart';
 
diff --git a/lib/widgets/entrance/navigation_bar.dart b/lib/widgets/entrance/navigation_bar.dart
index 8bac73c..c61b195 100644
--- a/lib/widgets/entrance/navigation_bar.dart
+++ b/lib/widgets/entrance/navigation_bar.dart
@@ -7,8 +7,9 @@ class NavigationBar extends StatelessWidget {
   final Function onChange;
   const NavigationBar({
     required this.onChange,
+    Key? key,
     this.activeKey = 'HOME',
-  });
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) => Container(
@@ -58,9 +59,7 @@ class NavigationBar extends StatelessWidget {
                                 : ColorTheme.of(context).cubeColor,
                           ),
                         ),
-                        SizedBox(
-                          height: 4.0,
-                        )
+                        const SizedBox(height: 4.0)
                       ],
                     ),
                   ),
diff --git a/test/widget_test.dart b/test/widget_test.dart
index a00fcd6..0e25da8 100644
--- a/test/widget_test.dart
+++ b/test/widget_test.dart
@@ -12,7 +12,7 @@ import 'package:flutter_test/flutter_test.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(App());
+    await tester.pumpWidget(const App());
 
     // Tap the '+' icon and trigger a frame.
     await tester.tap(find.byType(TextButton));