diff --git a/lib/common/widget_demo.dart b/lib/common/widget_demo.dart
index 9747dd43..6120592c 100644
--- a/lib/common/widget_demo.dart
+++ b/lib/common/widget_demo.dart
@@ -16,13 +16,16 @@ class WidgetDemo extends StatefulWidget {
   final String docUrl;
   final String title;
   final String codeUrl;
+  final Widget bottomNaviBar;
 
   WidgetDemo(
       {Key key,
       @required this.title,
       @required this.contentList,
       @required this.codeUrl,
-      @required this.docUrl})
+      @required this.docUrl,
+      this.bottomNaviBar,
+      })
       : super(key: key);
 
   _WidgetDemoState createState() => _WidgetDemoState();
@@ -174,6 +177,8 @@ class _WidgetDemoState extends State<WidgetDemo> {
         ),
         backgroundColor: Theme.of(context).primaryColor,
       ),
+        bottomNavigationBar: (widget.bottomNaviBar is Widget) ? widget
+            .bottomNaviBar : null
     );
   }
 }
diff --git a/lib/widgets/components/Bar/AppBar/demo.dart b/lib/widgets/components/Bar/AppBar/demo.dart
index d9bf58e8..c2e4a0e5 100644
--- a/lib/widgets/components/Bar/AppBar/demo.dart
+++ b/lib/widgets/components/Bar/AppBar/demo.dart
@@ -11,8 +11,8 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* Checkbox 默认AppBar的实例
+* index 当前AppBar 的索引值
 * */
 class AppBarLessDefaultComplex extends StatefulWidget {
   const AppBarLessDefaultComplex() : super();
diff --git a/lib/widgets/components/Bar/AppBar/index.dart b/lib/widgets/components/Bar/AppBar/index.dart
index 06da2b87..7a84a0bf 100644
--- a/lib/widgets/components/Bar/AppBar/index.dart
+++ b/lib/widgets/components/Bar/AppBar/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: AppBar 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -48,8 +47,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'AppBar',
-      codeUrl: '${Application.github['widgetsURL']}componentss/Bar/AppBar/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/Bar/AppBar/demo.dart',
+      contentList: [ allDemoBoxs(context, this) ],
       docUrl: 'https://docs.flutter.io/flutter/material/AppBar-class.html',
     );
   }
@@ -60,7 +59,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Bar/BottomAppBar/demo.dart b/lib/widgets/components/Bar/BottomAppBar/demo.dart
index b9ebd18c..7f42a9e5 100644
--- a/lib/widgets/components/Bar/BottomAppBar/demo.dart
+++ b/lib/widgets/components/Bar/BottomAppBar/demo.dart
@@ -6,8 +6,6 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: BottomAppBar 的示例
  */
-
-import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
diff --git a/lib/widgets/components/Bar/BottomAppBar/index.dart b/lib/widgets/components/Bar/BottomAppBar/index.dart
index 74c17c2f..1ae2d1b8 100644
--- a/lib/widgets/components/Bar/BottomAppBar/index.dart
+++ b/lib/widgets/components/Bar/BottomAppBar/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: BottomAppBar 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -44,8 +43,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'BottomAppBar',
-      codeUrl: '${Application.github['widgetsURL']}componentss/Bar/BottomAppBar/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/Bar/BottomAppBar/demo.dart',
+      contentList: [allDomeBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/BottomAppBar-class.html',
     );
   }
@@ -56,7 +55,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDomeBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Bar/ButtonBar/demo.dart b/lib/widgets/components/Bar/ButtonBar/demo.dart
index 74cf15b7..00c2debc 100644
--- a/lib/widgets/components/Bar/ButtonBar/demo.dart
+++ b/lib/widgets/components/Bar/ButtonBar/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* ButtonBar 默认的实例
 * */
 class ButtonBarFullDefault extends StatefulWidget {
   const ButtonBarFullDefault() : super();
diff --git a/lib/widgets/components/Bar/ButtonBar/index.dart b/lib/widgets/components/Bar/ButtonBar/index.dart
index 753cd3be..cc745120 100644
--- a/lib/widgets/components/Bar/ButtonBar/index.dart
+++ b/lib/widgets/components/Bar/ButtonBar/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: ButtonBar 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -45,9 +44,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'ButtonBar',
-      codeUrl: '${Application
-          .github['widgetsURL']}componentss//Bar/ButtonBar/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss//Bar/ButtonBar/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/ButtonBar-class.html',
     );
   }
@@ -58,7 +56,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Bar/FlexibleSpaceBar/demo.dart b/lib/widgets/components/Bar/FlexibleSpaceBar/demo.dart
index cd4218a9..b9fac16b 100644
--- a/lib/widgets/components/Bar/FlexibleSpaceBar/demo.dart
+++ b/lib/widgets/components/Bar/FlexibleSpaceBar/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* Checkbox 默认FlexibleSpaceBar的实例
 * */
 class FlexibleSpaceBarFullDefault extends StatefulWidget {
   const FlexibleSpaceBarFullDefault() : super();
diff --git a/lib/widgets/components/Bar/FlexibleSpaceBar/index.dart b/lib/widgets/components/Bar/FlexibleSpaceBar/index.dart
index 87e43280..5c85aa3a 100644
--- a/lib/widgets/components/Bar/FlexibleSpaceBar/index.dart
+++ b/lib/widgets/components/Bar/FlexibleSpaceBar/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: FlexibleSpaceBar 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -46,9 +45,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'FlexibleSpaceBar',
-      codeUrl: '${Application
-          .github['widgetsURL']}componentss/Bar/FlexibleSpaceBar/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'Bar/FlexibleSpaceBar/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/FlexibleSpaceBar-class.html',
     );
   }
@@ -59,7 +57,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Bar/SliverAppBar/demo.dart b/lib/widgets/components/Bar/SliverAppBar/demo.dart
index e201af73..f99a104d 100644
--- a/lib/widgets/components/Bar/SliverAppBar/demo.dart
+++ b/lib/widgets/components/Bar/SliverAppBar/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* Checkbox 默认SliverAppBar的实例
 * */
 class SliverAppBarFullDefault extends StatefulWidget {
   const SliverAppBarFullDefault() : super();
diff --git a/lib/widgets/components/Bar/SliverAppBar/index.dart b/lib/widgets/components/Bar/SliverAppBar/index.dart
index ef6de401..7063439c 100644
--- a/lib/widgets/components/Bar/SliverAppBar/index.dart
+++ b/lib/widgets/components/Bar/SliverAppBar/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: SliverAppBar 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -41,8 +40,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'SliverAppBar',
-      codeUrl: '${Application.github['widgetsURL']}componentss/Bar/SliverAppBar/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/Bar/SliverAppBar/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/widgets/SliverAppBar-class.html',
     );
   }
@@ -53,7 +52,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Bar/SnackBar/demo.dart b/lib/widgets/components/Bar/SnackBar/demo.dart
index 6b0e9c5b..24b677d8 100644
--- a/lib/widgets/components/Bar/SnackBar/demo.dart
+++ b/lib/widgets/components/Bar/SnackBar/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* Checkbox 默认的实例
 * */
 class SnackBarFullDefault extends StatefulWidget {
   const SnackBarFullDefault() : super();
diff --git a/lib/widgets/components/Bar/SnackBar/index.dart b/lib/widgets/components/Bar/SnackBar/index.dart
index 3595af12..ddfa971a 100644
--- a/lib/widgets/components/Bar/SnackBar/index.dart
+++ b/lib/widgets/components/Bar/SnackBar/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: SnackBar 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -46,8 +45,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'SnackBar',
-      codeUrl: '${Application.github['widgetsURL']}componentss/Bar/SnackBar/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/Bar/SnackBar/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/SnackBar-class.html',
     );
   }
@@ -58,7 +57,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Bar/SnackBarAction/index.dart b/lib/widgets/components/Bar/SnackBarAction/index.dart
index 30d2fbe6..47257ead 100644
--- a/lib/widgets/components/Bar/SnackBarAction/index.dart
+++ b/lib/widgets/components/Bar/SnackBarAction/index.dart
@@ -7,7 +7,6 @@
  * tartget: SnackBarAction 的示例
  */
 import '../../../../common/widget_demo.dart';
-import '../../../../routers/application.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
diff --git a/lib/widgets/components/Card/Card/demo.dart b/lib/widgets/components/Card/Card/demo.dart
index 7d4b4b3c..bc3c1d1f 100644
--- a/lib/widgets/components/Card/Card/demo.dart
+++ b/lib/widgets/components/Card/Card/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* Checkbox 默认Card的实例
 * */
 class CardFullDefault extends StatefulWidget {
   const CardFullDefault() : super();
diff --git a/lib/widgets/components/Card/Card/index.dart b/lib/widgets/components/Card/Card/index.dart
index 3867447d..66e2bc49 100644
--- a/lib/widgets/components/Card/Card/index.dart
+++ b/lib/widgets/components/Card/Card/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: Card 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -44,9 +43,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'Card',
-      codeUrl: '${Application
-          .github['widgetsURL']}componentss/Card/Card/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/Card/Card/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/Card-class.html',
     );
   }
@@ -57,7 +55,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/LIst/AnimatedList/index.dart b/lib/widgets/components/LIst/AnimatedList/index.dart
index eba2c0d0..48ffdff4 100644
--- a/lib/widgets/components/LIst/AnimatedList/index.dart
+++ b/lib/widgets/components/LIst/AnimatedList/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: AnimatedList 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'package:flutter/material.dart';
 
 import 'package:flutter_markdown/flutter_markdown.dart';
@@ -45,8 +44,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'AnimatedList',
-      codeUrl: '${Application.github['widgetsURL']}componentss/List/AnimatedList/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/List/AnimatedList/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/widgets/AnimatedList-class.html',
     );
   }
@@ -57,7 +56,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/LIst/ListBody/demo.dart b/lib/widgets/components/LIst/ListBody/demo.dart
index 8eae97bc..73dbbe13 100644
--- a/lib/widgets/components/LIst/ListBody/demo.dart
+++ b/lib/widgets/components/LIst/ListBody/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* Checkbox 默认ListBody的实例
 * */
 class ListBodyFullDefault extends StatefulWidget {
   const ListBodyFullDefault() : super();
diff --git a/lib/widgets/components/LIst/ListBody/index.dart b/lib/widgets/components/LIst/ListBody/index.dart
index 1ef2c981..e208093f 100644
--- a/lib/widgets/components/LIst/ListBody/index.dart
+++ b/lib/widgets/components/LIst/ListBody/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: ListBody 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -42,9 +41,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'ListBody',
-      codeUrl: '${Application
-          .github['widgetsURL']}/componentss/List/ListBody/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/List/ListBody/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/widgets/ListBody-class.html',
     );
   }
@@ -55,7 +53,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/LIst/ListView/demo.dart b/lib/widgets/components/LIst/ListView/demo.dart
index bdce900b..cafab8da 100644
--- a/lib/widgets/components/LIst/ListView/demo.dart
+++ b/lib/widgets/components/LIst/ListView/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* ListView 默认ListView的实例
 * */
 class ListViewFullDefault extends StatefulWidget {
   const ListViewFullDefault() : super();
diff --git a/lib/widgets/components/LIst/ListView/index.dart b/lib/widgets/components/LIst/ListView/index.dart
index 1416e662..50e16a67 100644
--- a/lib/widgets/components/LIst/ListView/index.dart
+++ b/lib/widgets/components/LIst/ListView/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: ListView 的示例
  */
-import '../../../../common/widget-demo.dart';
-import '../../../../routers/application.dart';
+import '../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -69,8 +68,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'ListView',
-      codeUrl: '${Application.github['widgetsURL']}/componentss/List/ListView/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'componentss/List/ListView/demo.dart',
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/widgets/ListView-class.html',
     );
   }
@@ -81,7 +80,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Navigation/BottomNavigationBar/demo.dart b/lib/widgets/components/Navigation/BottomNavigationBar/demo.dart
index a4916e74..eb79430c 100644
--- a/lib/widgets/components/Navigation/BottomNavigationBar/demo.dart
+++ b/lib/widgets/components/Navigation/BottomNavigationBar/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* BottomNavigationBar 默认的实例
 * */
 class BottomNavigationBarFullDefault extends StatefulWidget {
   const BottomNavigationBarFullDefault() : super();
diff --git a/lib/widgets/components/Navigation/BottomNavigationBar/index.dart b/lib/widgets/components/Navigation/BottomNavigationBar/index.dart
index 072f03a5..cb40f249 100644
--- a/lib/widgets/components/Navigation/BottomNavigationBar/index.dart
+++ b/lib/widgets/components/Navigation/BottomNavigationBar/index.dart
@@ -6,10 +6,9 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: BottomNavigationBar 的示例
  */
-import '../customDemo.dart';
 import '../../../../routers/application.dart';
-import 'dart:math';
 import 'package:flutter/material.dart';
+import  '../../../../common/widget_demo.dart';
 
 import 'package:flutter_markdown/flutter_markdown.dart';
 import './demo.dart' as BottomNavigationBarDemo;
@@ -41,10 +40,10 @@ class Demo extends StatefulWidget {
 class _DemoState extends State<Demo> {
   @override
   Widget build(BuildContext context) {
-    return CustomDemo(
+    return WidgetDemo(
       title: 'BottomNavigationBar',
       codeUrl: '${Application.github['widgetsURL']}components/Navigation/BottomNavigationBar/demo.dart',
-      child: allCheckboxs(context, this),
+      contentList: [allDemoBoxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/BottomNavigationBar-class.html',
       bottomNaviBar:BottomNavigationBarDemo.BottomNavigationBarFullDefault()
     );
@@ -56,7 +55,7 @@ class _DemoState extends State<Demo> {
  * context: 运行上下文
  * that: 指向有状态的 StatefulWidget
  */
-Widget allCheckboxs(BuildContext context, _DemoState that) {
+Widget allDemoBoxs(BuildContext context, _DemoState that) {
   return Container(
     //padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
       child: Column(
diff --git a/lib/widgets/components/Navigation/BottomNavigationBarItem/demo.dart b/lib/widgets/components/Navigation/BottomNavigationBarItem/demo.dart
index 7f77989c..4554f235 100644
--- a/lib/widgets/components/Navigation/BottomNavigationBarItem/demo.dart
+++ b/lib/widgets/components/Navigation/BottomNavigationBarItem/demo.dart
@@ -11,8 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
-* index 当前checkbox 的索引值
+* BottomNavigationBar 默认的实例
 * */
 class BottomNavigationBarItemFullDefault extends StatefulWidget {
   const BottomNavigationBarItemFullDefault() : super();
diff --git a/lib/widgets/components/Navigation/BottomNavigationBarItem/index.dart b/lib/widgets/components/Navigation/BottomNavigationBarItem/index.dart
index 6d8f29ee..9071e9fd 100644
--- a/lib/widgets/components/Navigation/BottomNavigationBarItem/index.dart
+++ b/lib/widgets/components/Navigation/BottomNavigationBarItem/index.dart
@@ -6,7 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: BottomNavigationBarItem 的示例
  */
-import '../../../../common/widget-demo.dart';
+import '../../../../common/widget_demo.dart';
 import '../../../../routers/application.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
@@ -44,8 +44,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'BottomNavigationBarItem',
-      codeUrl: '${Application.github['widgetsURL']}componentss/Bar/BottomNavigationBarItem/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: '${Application.github['widgetsURL']}components/Bar/BottomNavigationBarItem/demo.dart',
+      contentList: [allCheckboxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/widgets/BottomNavigationBarItem-class.html',
     );
   }
diff --git a/lib/widgets/components/Navigation/customDemo.dart b/lib/widgets/components/Navigation/customDemo.dart
deleted file mode 100644
index e584df3b..00000000
--- a/lib/widgets/components/Navigation/customDemo.dart
+++ /dev/null
@@ -1,35 +0,0 @@
-/**
- * Created with Android Studio.
- * User: 一晟
- * Date: 2018/12/27
- * Time: 下午10:12
- * email: zhu.yan@alibaba-inc.com
- * tartget: FlatButton 的示例
- */
-import '../../../common/widget-demo.dart';
-import 'package:flutter/material.dart';
-
-class CustomDemo extends WidgetDemo {
-
-  final Widget child;
-  final String docUrl;
-  final String title;
-  final String codeUrl;
-  final Widget bottomNaviBar;
-  CustomDemo(
-      {Key key,
-        @required this.title,
-        @required this.child,
-        @required this.codeUrl,
-        @required this.docUrl,
-        this.bottomNaviBar
-      })
-      : super(key: key);
-
-  @override
-  Widget build(BuildContext context,[bottomNavigationBar]) {
-    print('bottomNavigationBar:${bottomNaviBar}');
-    final factory = super.build(context,bottomNaviBar);
-    return factory;
-  }
-}
\ No newline at end of file
diff --git a/lib/widgets/elements/Form/Button/DropdownButton/index.dart b/lib/widgets/elements/Form/Button/DropdownButton/index.dart
index 24fc4ce9..8bc852b0 100644
--- a/lib/widgets/elements/Form/Button/DropdownButton/index.dart
+++ b/lib/widgets/elements/Form/Button/DropdownButton/index.dart
@@ -7,9 +7,7 @@
  * target: DropdownButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/DropdownButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
-import 'dart:math';
+import '../../../../../common/widget_demo.dart';
 import 'package:flutter/material.dart';
 
 import 'package:flutter_markdown/flutter_markdown.dart';
@@ -51,8 +49,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'DropdownButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/DropdownButton/demo.dart',
-      child: allDropdownButtons(context,this),
+      codeUrl: 'elements/Form/Button/DropdownButton/demo.dart',
+      contentList: [allDropdownButtons(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/DropdownButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/FlatButton/index.dart b/lib/widgets/elements/Form/Button/FlatButton/index.dart
index adbb3b5b..e5f4f1c7 100644
--- a/lib/widgets/elements/Form/Button/FlatButton/index.dart
+++ b/lib/widgets/elements/Form/Button/FlatButton/index.dart
@@ -7,9 +7,7 @@
  * target: FlatButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/FlatButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
-import 'dart:math';
+import '../../../../../common/widget_demo.dart';
 import 'package:flutter/material.dart';
 
 import 'package:flutter_markdown/flutter_markdown.dart';
@@ -83,8 +81,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'FlatButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/FlatButton/demo.dart',
-      child: allFlatButtons(context),
+      codeUrl: 'elements/Form/Button/FlatButton/demo.dart',
+      contentList: [allFlatButtons(context)],
       docUrl: 'https://docs.flutter.io/flutter/material/FlatButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/FloatingActionButton/index.dart b/lib/widgets/elements/Form/Button/FloatingActionButton/index.dart
index 6afa2f11..0c921769 100644
--- a/lib/widgets/elements/Form/Button/FloatingActionButton/index.dart
+++ b/lib/widgets/elements/Form/Button/FloatingActionButton/index.dart
@@ -7,8 +7,7 @@
  * target: FloatingActionButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/FloatingActionButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -62,9 +61,8 @@ class _DemoState extends State<Demo> {
     return WidgetDemo(
       title: 'FloatingActionButton',
       // desc: _floatingActionTitle,
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/FloatingActionButton/demo.dart',
-      child: allFloatingActionButtons(context,this),
-      //child: Text('123'),
+      codeUrl: 'elements/Form/Button/FloatingActionButton/demo.dart',
+      contentList: [allFloatingActionButtons(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/FloatingActionButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/IconButton/index.dart b/lib/widgets/elements/Form/Button/IconButton/index.dart
index 19ffdd5d..ad00008b 100644
--- a/lib/widgets/elements/Form/Button/IconButton/index.dart
+++ b/lib/widgets/elements/Form/Button/IconButton/index.dart
@@ -7,8 +7,7 @@
  * target: IconButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/IconButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -54,8 +53,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'IconButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/IconButton/demo.dart',
-      child: allIconButtons(context,this),
+      codeUrl: 'elements/Form/Button/IconButton/demo.dart',
+      contentList: [ allIconButtons(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/IconButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/OutlineButton/index.dart b/lib/widgets/elements/Form/Button/OutlineButton/index.dart
index e44cd71b..5d23c6b1 100644
--- a/lib/widgets/elements/Form/Button/OutlineButton/index.dart
+++ b/lib/widgets/elements/Form/Button/OutlineButton/index.dart
@@ -7,8 +7,7 @@
  * target: OutlineButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/OutlineButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -63,8 +62,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'OutlineButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/OutlineButton/demo.dart',
-      child: allOutlineButtons(context,this),
+      codeUrl: 'elements/Form/Button/OutlineButton/demo.dart',
+      contentList: [allOutlineButtons(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/OutlineButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/PopupMenuButton/index.dart b/lib/widgets/elements/Form/Button/PopupMenuButton/index.dart
index 719acf4e..d65e2633 100644
--- a/lib/widgets/elements/Form/Button/PopupMenuButton/index.dart
+++ b/lib/widgets/elements/Form/Button/PopupMenuButton/index.dart
@@ -8,8 +8,7 @@
  * 对应文档地址:https://docs.flutter.io/flutter/material/PopupMenuButton-class.html
  */
 
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
@@ -55,8 +54,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'PopupMenuButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/RaisedButton/demo.dart',
-      child: allPopupMenuButton(widget,this),
+      codeUrl: 'elements/Form/Button/RaisedButton/demo.dart',
+      contentList: [allPopupMenuButton(widget,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/PopupMenuButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/RaisedButton/index.dart b/lib/widgets/elements/Form/Button/RaisedButton/index.dart
index 465ad90b..d29797ef 100644
--- a/lib/widgets/elements/Form/Button/RaisedButton/index.dart
+++ b/lib/widgets/elements/Form/Button/RaisedButton/index.dart
@@ -7,8 +7,7 @@
  * target: RaisedButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/RaisedButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -63,8 +62,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'RaisedButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/RaisedButton/demo.dart',
-      child: allRaisedButtons(context,this),
+      codeUrl: 'elements/Form/Button/RaisedButton/demo.dart',
+      contentList: [allRaisedButtons(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/RaisedButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Button/RawMaterialButton/index.dart b/lib/widgets/elements/Form/Button/RawMaterialButton/index.dart
index 818aeccc..982675e9 100644
--- a/lib/widgets/elements/Form/Button/RawMaterialButton/index.dart
+++ b/lib/widgets/elements/Form/Button/RawMaterialButton/index.dart
@@ -7,8 +7,7 @@
  * target: RawMaterialButton 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/RawMaterialButton-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -52,8 +51,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'RawMaterialButton',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/RawMaterialButton/demo.dart',
-      child: allRawMaterialButtons(context,this),
+      codeUrl: 'elements/Form/Button/RawMaterialButton/demo.dart',
+      contentList: [allRawMaterialButtons(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/RawMaterialButton-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/CheckBox/Checkbox/demo.dart b/lib/widgets/elements/Form/CheckBox/Checkbox/demo.dart
index 489225d2..2e94bb8d 100644
--- a/lib/widgets/elements/Form/CheckBox/Checkbox/demo.dart
+++ b/lib/widgets/elements/Form/CheckBox/Checkbox/demo.dart
@@ -10,7 +10,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
+* Checkbox 默认的实例
 * index 当前checkbox 的索引值
 * */
 class CheckboxDefault extends StatefulWidget{
@@ -39,7 +39,7 @@ class _CheckboxDefault extends State {
 }
 
 /*
-* Checkbox 默认按钮的实例
+* Checkbox 默认的实例
 * index 当前checkbox 的索引值
 * */
 class CheckboxSelect extends StatelessWidget {
diff --git a/lib/widgets/elements/Form/CheckBox/Checkbox/index.dart b/lib/widgets/elements/Form/CheckBox/Checkbox/index.dart
index 7410ce50..00f4d369 100644
--- a/lib/widgets/elements/Form/CheckBox/Checkbox/index.dart
+++ b/lib/widgets/elements/Form/CheckBox/Checkbox/index.dart
@@ -7,8 +7,7 @@
  * target: Checkbox 的示例
  * 对应文档地址:https://docs.flutter.io/flutter/material/Checkbox-class.html
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 
@@ -48,8 +47,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'Checkbox',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Checkbox/Checkbox/demo.dart',
-      child: allCheckboxs(context,this),
+      codeUrl: 'elements/Form/Checkbox/Checkbox/demo.dart',
+      contentList: [allCheckboxs(context,this)],
       docUrl: 'https://docs.flutter.io/flutter/material/Checkbox-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/CheckBox/CheckboxListTile/demo.dart b/lib/widgets/elements/Form/CheckBox/CheckboxListTile/demo.dart
index 5af9a5d3..eba60a7e 100644
--- a/lib/widgets/elements/Form/CheckBox/CheckboxListTile/demo.dart
+++ b/lib/widgets/elements/Form/CheckBox/CheckboxListTile/demo.dart
@@ -11,7 +11,7 @@ import 'dart:math';
 import 'package:flutter/material.dart';
 
 /*
-* Checkbox 默认按钮的实例
+* Checkbox 默认的实例
 * index 当前checkbox 的索引值
 * */
 class CheckboxListTileStateDefault extends StatefulWidget {
diff --git a/lib/widgets/elements/Form/CheckBox/CheckboxListTile/index.dart b/lib/widgets/elements/Form/CheckBox/CheckboxListTile/index.dart
index 87a801b4..3f6261bd 100644
--- a/lib/widgets/elements/Form/CheckBox/CheckboxListTile/index.dart
+++ b/lib/widgets/elements/Form/CheckBox/CheckboxListTile/index.dart
@@ -6,8 +6,7 @@
  * email: zhu.yan@alibaba-inc.com
  * tartget: CheckboxListTile 的示例
  */
-import '../../../../../common/widget-demo.dart';
-import '../../../../../routers/application.dart';
+import '../../../../../common/widget_demo.dart';
 import 'dart:math';
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
@@ -49,8 +48,8 @@ class _DemoState extends State<Demo> {
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'CheckboxListTile',
-      codeUrl: '${Application.github['widgetsURL']}elements/Form/Checkbox/CheckboxListTile/demo.dart',
-      child: allCheckboxs(context, this),
+      codeUrl: 'elements/Form/Checkbox/CheckboxListTile/demo.dart',
+      contentList: [allCheckboxs(context, this)],
       docUrl: 'https://docs.flutter.io/flutter/material/CheckboxListTile-class.html',
     );
   }
diff --git a/lib/widgets/elements/Form/Text/RichText/index.dart b/lib/widgets/elements/Form/Text/RichText/index.dart
index 43811bc9..6b3c9f98 100644
--- a/lib/widgets/elements/Form/Text/RichText/index.dart
+++ b/lib/widgets/elements/Form/Text/RichText/index.dart
@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
-import '../../../../../common/widget-demo.dart';
+import '../../../../../common/widget_demo.dart';
 
 const String intro = """
 # 富文本显示
@@ -67,7 +67,7 @@ class _Demo extends State<Demo> {
       title: 'Rich Text',
       docUrl: 'https://docs.flutter.io/flutter/widgets/RichText-class.html',
       codeUrl: '',
-      child: new Column(
+      contentList: [new Column(
         children: <Widget>[
           MarkdownBody(data: markDesc['intro']),
           Container(
@@ -87,6 +87,6 @@ class _Demo extends State<Demo> {
           MarkdownBody(data: markDesc['diff']),
         ],
       ),
-    );
+    ]);
   }
 }
diff --git a/lib/widgets/elements/Form/Text/Text/index.dart b/lib/widgets/elements/Form/Text/Text/index.dart
index 95c15584..9cfc92f5 100644
--- a/lib/widgets/elements/Form/Text/Text/index.dart
+++ b/lib/widgets/elements/Form/Text/Text/index.dart
@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 //import 'package:flutter_markdown/flutter_markdown.dart';
-import '../../../../../common/widget-demo.dart';
+import '../../../../../common/widget_demo.dart';
 import '../../../../../components/markdown.dart';
 
 const String intro = """
@@ -79,7 +79,7 @@ class _Demo extends State<Demo> {
       title: "Text",
       docUrl: 'flutter/widgets/Text-class.html',
       codeUrl: 'elements/Form/Text/Text/index.dart',
-      child: new Column(
+      contentList: [new Column(
         children: <Widget>[
           MarkdownBody(markDesc['intro']),
           Text(
@@ -110,7 +110,7 @@ class _Demo extends State<Demo> {
             ),
           )
         ],
-      )
+      )]
     );
   }
 }
diff --git a/lib/widgets/elements/Frame/Axis/crossAxis/index.dart b/lib/widgets/elements/Frame/Axis/crossAxis/index.dart
index 55dd8402..6ed7d70c 100644
--- a/lib/widgets/elements/Frame/Axis/crossAxis/index.dart
+++ b/lib/widgets/elements/Frame/Axis/crossAxis/index.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import '../../../../../common/widget-demo.dart';
+import '../../../../../common/widget_demo.dart';
 
 class Demo extends StatefulWidget {
   static const String routeName = '/element/Frame/Axis/crossAxis';
diff --git a/lib/widgets/elements/Frame/Axis/flipAxis/index.dart b/lib/widgets/elements/Frame/Axis/flipAxis/index.dart
index 78d2fa8d..c5d00594 100644
--- a/lib/widgets/elements/Frame/Axis/flipAxis/index.dart
+++ b/lib/widgets/elements/Frame/Axis/flipAxis/index.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import '../../../../../common/widget-demo.dart';
+import '../../../../../common/widget_demo.dart';
 
 class Demo extends StatefulWidget {
   static const String routeName = '/element/Frame/Axis/flipAxis';
diff --git a/lib/widgets/elements/Frame/Axis/mainAxis/index.dart b/lib/widgets/elements/Frame/Axis/mainAxis/index.dart
index a957f28c..9540c54e 100644
--- a/lib/widgets/elements/Frame/Axis/mainAxis/index.dart
+++ b/lib/widgets/elements/Frame/Axis/mainAxis/index.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import '../../../../../common/widget-demo.dart';
+import '../../../../../common/widget_demo.dart';
 
 class Demo extends StatefulWidget {
   static const String routeName = '/element/Frame/Axis/Table';
diff --git a/lib/widgets/elements/Media/Image/precacheImage/index.dart b/lib/widgets/elements/Media/Image/precacheImage/index.dart
index 814decb7..d315f08c 100644
--- a/lib/widgets/elements/Media/Image/precacheImage/index.dart
+++ b/lib/widgets/elements/Media/Image/precacheImage/index.dart
@@ -5,7 +5,7 @@
  * @Last Modified time: 2018-11-16 15:09:12 
  */
 import 'package:flutter/material.dart';
-import '../../../../../common/widget-demo.dart';
+import '../../../../../common/widget_demo.dart';
 
 class Demo extends StatefulWidget {
   static const String routeName = '/element/Media/Image/precacheImage';