Merge pull request alibaba#211 from pansheng12580/master

添加注解@OverRide

Author: hanxu317317

lib/widgets/404.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 class WidgetNotFound extends StatelessWidget {
-
+    @override
     Widget build(BuildContext context) {
       return Scaffold(
           appBar: AppBar(

lib/widgets/elements/Form/Slider/Slider/demo.dart

@@ -14,7 +14,7 @@ class SliderDemo extends StatefulWidget {
 
 class _Demo extends State<SliderDemo> {
   double value = 0.0;
-
+  @override
   Widget build(BuildContext context) {
     return Slider(
       value: value,
@@ -42,7 +42,7 @@ class SliderThemeDemo extends StatefulWidget {
 
 class _SliderThemeDemo extends State<SliderThemeDemo> {
   double value = 0.0;
-
+  @override
   Widget build(BuildContext context) {
     return Container(
       child: SliderTheme(

lib/widgets/elements/Form/Slider/Slider/index.dart

@@ -75,7 +75,7 @@ class Demo extends StatefulWidget {
 }
 
 class _Demo extends State<Demo> {
-
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'Slider',

lib/widgets/elements/Form/Slider/SliderTheme/demo.dart

@@ -14,6 +14,7 @@ class SliderThemeDemo extends StatefulWidget {
 
 class _SliderThemeDemo extends State<SliderThemeDemo> {
   double value = 0.0;
+  @override
   Widget build(BuildContext context) {
     return  Container(
       child:  SliderTheme(

lib/widgets/elements/Form/Slider/SliderTheme/index.dart

@@ -59,7 +59,7 @@ class Demo extends StatefulWidget {
 }
 
 class _Demo extends State<Demo> {
-
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'SliderTheme',

lib/widgets/elements/Form/Slider/SliderThemeData/demo.dart

@@ -14,6 +14,7 @@ class SliderThemeDemo extends StatefulWidget {
 
 class _SliderThemeDemo extends State<SliderThemeDemo> {
   double value = 0.0;
+  @override
   Widget build(BuildContext context) {
     return  Container(
       child:  SliderTheme(

lib/widgets/elements/Form/Slider/SliderThemeData/index.dart

@@ -33,6 +33,7 @@ class Demo extends StatefulWidget {
 
 class _Demo extends State<Demo> {
   Color c = CupertinoColors.activeBlue;
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'SliderThemeData',

lib/widgets/elements/Form/Switch/Switch/demo.dart

@@ -13,6 +13,7 @@ class SwitchDemo extends StatefulWidget {
 
 class _Demo extends State<SwitchDemo> {
   bool check = false;
+  @override
   Widget build(BuildContext context) {
     return  Switch(
       value: this.check,
@@ -31,6 +32,7 @@ class SwitchHighDemo extends StatefulWidget {
 
 class _SwitchHighDemo extends State<SwitchHighDemo> {
   bool check = false;
+  @override
   Widget build(BuildContext context) {
     return  Switch.adaptive(
       value: this.check,
@@ -51,6 +53,7 @@ class SwitchTypesDemo extends StatefulWidget {
 
 class _SwitchTypesDemo extends State<SwitchTypesDemo> {
   bool check = false;
+  @override
   Widget build(BuildContext context) {
     return  Switch(
       value: this.check,

lib/widgets/elements/Form/Switch/Switch/index.dart

@@ -52,7 +52,7 @@ class Demo extends StatefulWidget {
 }
 
 class _Demo extends State<Demo> {
-
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'Switch',

lib/widgets/elements/Form/Switch/SwitchListTile/demo.dart

@@ -13,6 +13,7 @@ class SwitchListTileDemo extends StatefulWidget {
 
 class _Demo extends State<SwitchListTileDemo> {
   bool _lights = false;
+  @override
   Widget build(BuildContext context) {
     return  SwitchListTile(
       title: const Text('Lights'),

lib/widgets/elements/Form/Switch/SwitchListTile/index.dart

@@ -28,7 +28,7 @@ class Demo extends StatefulWidget {
 }
 
 class _Demo extends State<Demo> {
-
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'SwitchListTile',

lib/widgets/elements/Form/Text/RichText/demo.dart

@@ -12,7 +12,7 @@ class RichTextDemo extends StatefulWidget {
 }
 
 class _Demo extends State<RichTextDemo> {
-
+  @override
   Widget build(BuildContext context) {
     return Container(
       color: Color(0xff000000),

lib/widgets/elements/Form/Text/RichText/index.dart

@@ -25,7 +25,7 @@ class Demo extends StatefulWidget {
 }
 
 class _Demo extends State<Demo> {
-
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: 'Rich Text',

lib/widgets/elements/Form/Text/Text/demo.dart

@@ -15,7 +15,7 @@ class TextDemo extends StatefulWidget {
 class _Demo extends State<TextDemo> {
   int index = 0;
   Duration timer = new Duration(minutes: 50);
-
+  @override
   Widget build(BuildContext context) {
     return  Text("i'm a text");
   }

lib/widgets/elements/Form/Text/Text/index.dart

@@ -35,6 +35,7 @@ class _Demo extends State<Demo> {
   onButtonTap() {
 
   }
+  @override
   Widget build(BuildContext context) {
     return WidgetDemo(
       title: "Text",

lib/widgets/themes/Cupertino/CupertinoIcons/demo.dart

@@ -70,7 +70,7 @@ class _CupertinoIconsFullDefault extends State {
       }
     }
   }
-
+  @override
   Widget build(BuildContext context) {
     return
       Align(

lib/widgets/themes/Cupertino/CupertinoNavigationBar/demo.dart

@@ -82,6 +82,7 @@ class _CupertinoNavigationBarFullDefault extends State {
     );
   }
 
+  @override
   Widget build(BuildContext context) {
     return SizedBox(
         height: MediaQuery.of(context).size.height/1.5,

lib/widgets/themes/Cupertino/CupertinoScrollbar/demo.dart

@@ -13,7 +13,7 @@ class CupertinoScrollbarDemo extends StatefulWidget {
 }
 
 class _Demo extends State<CupertinoScrollbarDemo> {
-
+  @override
   Widget build(BuildContext context) {
     return Column(
       children: <Widget>[
@@ -47,7 +47,7 @@ class NoCupertinoScrollbarDemo extends StatefulWidget {
 }
 
 class _NoCupertinoScrollbarDemo extends State<NoCupertinoScrollbarDemo> {
-
+  @override
   Widget build(BuildContext context) {
     return Column(
       children: <Widget>[

lib/widgets/themes/Cupertino/CupertinoSegmentedControl/demo.dart

@@ -8,6 +8,7 @@ class CupertinoSegmentedControlDemo extends StatefulWidget {
 
 class _Demo extends State<CupertinoSegmentedControlDemo> {
   String value = 'a';
+  @override
   Widget build(BuildContext context) {
     return  CupertinoSegmentedControl(
       onValueChanged: (v) {

lib/widgets/themes/Cupertino/CupertinoSlider/demo.dart

@@ -14,6 +14,7 @@ class CupertinoSliderDemo extends StatefulWidget {
 
 class _Demo extends State<CupertinoSliderDemo> {
   double value = 0.0;
+  @override
   Widget build(BuildContext context) {
     return  CupertinoSlider(
       value: value,//实际进度的位置

lib/widgets/themes/Cupertino/CupertinoSliverNavigationBar/demo.dart

@@ -14,6 +14,7 @@ class CupertinoSliverNavigationBarDemo extends StatefulWidget {
 
 class _Demo extends State<CupertinoSliverNavigationBarDemo> {
   double value = 0.0;
+  @override
   Widget build(BuildContext context) {
     return CupertinoPageScaffold(
       child: DecoratedBox(

lib/widgets/themes/Cupertino/CupertinoSwitch/demo.dart

@@ -14,6 +14,7 @@ class CupertinoSwitchDemo extends StatefulWidget {
 
 class _Demo extends State<CupertinoSwitchDemo> {
   bool _lights = false;
+  @override
   Widget build(BuildContext context) {
     return MergeSemantics(
       child: ListTile(

lib/widgets/themes/Cupertino/CupertinoTabBar/demo.dart

@@ -20,6 +20,7 @@ class _Demo extends State<CupertinoTabBarDemo> {
       index = _index;
     });
   }
+  @override
   Widget build(BuildContext context) {
     return Container(
       height: 500,

lib/widgets/themes/Cupertino/CupertinoTabScaffold/demo.dart

@@ -20,6 +20,7 @@ class _Demo extends State<CupertinoTabScaffoldDemo> {
       index = _index;
     });
   }
+  @override
   Widget build(BuildContext context) {
     return SizedBox(
       height: 500,

lib/widgets/themes/Cupertino/CupertinoTabView/demo.dart

@@ -20,6 +20,7 @@ class _Demo extends State<CupertinoTabScaffoldDemo> {
       index = _index;
     });
   }
+  @override
   Widget build(BuildContext context) {
     return SizedBox(
       height: 500,

lib/widgets/themes/Cupertino/CupertinoTimerPicker/demo.dart

@@ -39,7 +39,7 @@ class _Demo extends State<CupertinoTimerPickerDemo> {
       ),
     );
   }
-
+  @override
   Widget build(BuildContext context) {
     return GestureDetector(
       onTap: () {