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add widgets
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‎.gitignore

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@@ -135,9 +135,8 @@ app.*.symbols
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!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
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!/dev/ci/**/Gemfile.lock
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.idea/
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App.framework/
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# flutter_fly
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flutter_fly/.idea/
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flutter_fly/ios/Flutter/App.framework/
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Flutter.framework/
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/flutter_fly/.idea/
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‎README.md

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28. [人人影视客户端](https://github.com/Vove7/yyets_flutter)
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‎source/flutter/widgets/AboutDialog.md

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---
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title: 'AboutDialog'
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description: '控件介绍'
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description: '关于对话框，包含应用程序的图标，名称，版本号和版权，以及用于显示该应用程序使用的软件的许可证的按钮'
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type: widgets
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---
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# AboutDialog
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AboutDialog用于描述当前App信息，底部提供2个按钮：查看许可按钮和关闭按钮。AboutDialog需要和showAboutDialog配合使用，用法如下：
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```dart

‎source/flutter/widgets/AboutListTile.md

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---
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title: 'AboutListTile'
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description: '显示”关于信息“的[ListTile]，点击弹出AboutDialog'
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type: widgets
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---
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## AboutListTile
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用法如下：
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```dart
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AboutListTile()
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```
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效果如下：
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![](http://img.laomengit.com/image-20200420113543025.png)
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什么也没有设置，怎么会出现“About 老孟”？AboutListTile组件的`child`参数，默认显示About+应用程序的名称。
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设置`child`参数：
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```dart
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AboutListTile(
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child: Text('About 老孟程序员'),
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)
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```
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效果如下：
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![](http://img.laomengit.com/image-20200420114124372.png)
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设置`icon`:
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```dart
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AboutListTile(
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icon: FlutterLogo(),
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child: Text('About 老孟程序员'),
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)
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```
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效果如下：
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![image-20200420114402681](http://img.laomengit.com/image-20200420114402681.png)
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设置应用程序属性：
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```dart
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AboutListTile(
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icon: FlutterLogo(),
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child: Text('About 老孟程序员'),
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applicationName: '老孟程序员',
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applicationVersion: 'V1.0.0',
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applicationIcon: FlutterLogo(),
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applicationLegalese: '专注分享Flutter相关内容')
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```
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刷新，控件并没有更新，`AboutListTile`控件是有点击属性的，点击弹出AboutDialog控件，这些属性出现在AboutDialog控件上，关于AboutDialog的详细内容请查看AboutDialog控件。
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![image-20200420114905231](http://img.laomengit.com/image-20200420114905231.png)
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设置`aboutBoxChildren`：
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```dart
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final TextStyle textStyle = Theme.of(context).textTheme.body1;
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final List<Widget> aboutBoxChildren = <Widget>[
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SizedBox(height: 24),
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RichText(
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text: TextSpan(
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children: <TextSpan>[
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TextSpan(
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style: textStyle,
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text: 'Flutter is Google’s UI toolkit for building beautiful, '
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'natively compiled applications for mobile, web, and desktop '
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'from a single codebase. Learn more about Flutter at '),
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TextSpan(
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style: textStyle.copyWith(color: Theme.of(context).accentColor),
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text: 'https://flutter.dev'),
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TextSpan(style: textStyle, text: '.'),
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],
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),
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),
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];
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return AboutListTile(
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icon: FlutterLogo(),
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child: Text('About 老孟程序员'),
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applicationName: '老孟程序员',
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applicationVersion: 'V1.0.0',
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applicationIcon: FlutterLogo(),
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applicationLegalese: '专注分享Flutter相关内容',
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aboutBoxChildren: aboutBoxChildren,
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dense: false,
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)
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```
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效果：
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![image-20200420115524929](http://img.laomengit.com/image-20200420115524929.png)
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## 总结
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此控件通常不会使用，通常会设置一个单独的“关于页面”
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‎source/flutter/widgets/AbsorbPointer.md

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---
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title: 'AbsorbPointer'
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description: '控件介绍'
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title: 'AbsorbPointer | IgnorePointer'
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description: '在命中测试期间(不)吸收指针的控件'
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type: widgets
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---

‎source/flutter/widgets/Align.md

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---
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title: 'Align|Center'
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description: '控件介绍'
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description: '布局控件'
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type: widgets
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---
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# Align
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Align和Center控件都是控制子控件位置的控件。
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‎source/flutter/widgets/AlignTransition.md

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---
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title: 'AlignTransition'
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description: '控件介绍'
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description: '布局变化动画控件'
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type: widgets
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---
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‎source/flutter/widgets/AnimatedAlign.md

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type: widgets
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---
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# AnimatedAlign
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AnimatedAlign组件方便我们构建位置动画，基本用法如下：
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‎source/flutter/widgets/AnimatedBuilder.md

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type: widgets
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---
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# AnimatedBuilder
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AnimatedBuilder可以让我们轻松的构建动画控件，下面的案例是让flutter logo图片旋转，代码如下：
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‎source/flutter/widgets/AnimatedContainer.md

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type: widgets
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---
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# AnimatedContainer
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Flutter中很多用于动画的控件，这篇文章介绍动画控件`AnimatedContainer`，我们可以通俗的理解AnimatedContainer是带动画功能的Container，关于Container的详细介绍可以查看[Flutter Widgets 之 Container](https://blog.csdn.net/mengks1987/article/details/104388393)，这篇详细介绍了Container的用法。
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‎source/flutter/widgets/AnimatedCrossFade.md

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type: widgets
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# AnimatedCrossFade
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AnimatedCrossFade组件让2个组件在切换时出现交叉渐入的效果，因此AnimatedCrossFade需要设置2个子控件、动画时间和显示第几个子控件，用法如下：
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‎source/flutter/widgets/AnimatedIcon.md

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type: widgets
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# AnimatedIcon
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我们都知道Flutter系统中提供了大量的图标，但你是否知道Flutter还提供了很多动画图标，想要使用这些动画图标需要使用AnimatedIcon控件，首先需要设置图标，代码如下：
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‎source/flutter/widgets/AnimatedList.md

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type: widgets
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---
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# AnimatedList
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AnimatedList提供了一种简单的方式使列表数据发生变化时加入过渡动画，
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‎source/flutter/widgets/AnimatedModalBarrier.md

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---
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title: 'AnimatedModalBarrier'
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description: '控件介绍'
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description: '一个小部件，可防止用户与其自身背后的小部件进行交互，并且可以使用动画颜色值进行配置'
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type: widgets
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---

‎source/flutter/widgets/AnimatedOpacity.md

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# AnimatedOpacity
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AnimatedOpacity是一个隐式的动画组件，它可以使子组件变的透明，用法如下：
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‎source/flutter/widgets/AnimatedPadding.md

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# AnimatedPadding
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AnimatedPadding是一个隐式的动画组件，提供动态改变内边距的动画组件，用法如下：
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‎source/flutter/widgets/AnimatedPhysicalModel.md

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---
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title: 'AnimatedPhysicalModel'
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description: '对PhysicalModel组件进行动画'
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type: widgets
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---
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# AnimatedPhysicalModel
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AnimatedPhysicalModel组件为动画组件，对PhysicalModel组件进行动画，用法如下：
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```dart
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@override
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Widget build(BuildContext context) {
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return Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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RaisedButton(
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child: Text('动画'),
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onPressed: () {
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setState(() {
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_animated = !_animated;
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});
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},
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),
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_buildAnimatedPhysicalModel(),
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],
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),
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);
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}
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bool _animated = false;
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_buildAnimatedPhysicalModel() {
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return AnimatedPhysicalModel(
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borderRadius: BorderRadius.circular(_animated ? 20 : 10),
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shape: BoxShape.rectangle,
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color: _animated ? Colors.blue : Colors.red,
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elevation: _animated ? 18 : 8,
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shadowColor: !_animated ? Colors.blue : Colors.red,
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child: Container(
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height: 100,
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width: 100,
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),
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duration: Duration(seconds: 1),
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);
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}
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```
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效果如下：
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![](http://img.laomengit.com/AnimatedPhysicalModel_1.gif)
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‎source/flutter/widgets/AnimatedPositioned.md

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# AnimatedPositioned
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AnimatedPositioned是一个隐式的动画组件，提供动态改变位置的动画组件，用法如下：
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‎source/flutter/widgets/AnimatedPositionedDirectional.md

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# AnimatedPositionedDirectional
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AnimatedPositionedDirectional是一个隐式的动画组件，提供动态改变位置的动画组件，用法如下：
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‎source/flutter/widgets/AnimatedSize.md

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# AnimatedSize
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AnimatedSize是一个动画组件，当指定子组件的尺寸发生变化时，它就会在给定的时间内自动变换其尺寸。
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用法如下：
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```dart
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class _WidgetsDemo extends State<WidgetsDemo>
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with SingleTickerProviderStateMixin {
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var _height = 100.0;
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var _width = 100.0;
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var _color = Colors.red;
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@override
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Widget build(BuildContext context) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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RaisedButton(
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onPressed: () {
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setState(() {
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_height = 200.0;
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_width = 200.0;
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_color = Colors.blue;
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});
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},
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),
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AnimatedSize(
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vsync: this,
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duration: Duration(seconds: 1),
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child: Container(
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height: _height,
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width: _width,
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color: _color,
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),
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)
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],
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),
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);
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}
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}
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```
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效果如下：
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![](http://img.laomengit.com/AnimatedSize_1.gif)
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‎source/flutter/widgets/AnimatedSwitcher.md

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# AnimatedSwitcher
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AnimatedSwitcher在2个或者多个子组件之间切换时使用动画，基本用法如下：
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