flutter-go/lib/widgets/components/Bar/FlexibleSpaceBar/index.dart

/// Created with Android Studio.
/// User: 一晟
/// Date: 2019/1/1
/// Time: 下午10:38
/// email: zhu.yan@alibaba-inc.com
/// target: FlexibleSpaceBar 的示例
 
import 'package:flutter_go/components/widget_demo.dart';

import 'package:flutter_web/material.dart';

import './demo.dart' as FlexibleSpaceBarDemo;

const String _Text0 =
"""### **简介**
> FlexibleSpaceBar “扩展和折叠的应用栏”
- AppBar 的一部分，可以扩展和折叠;
""";


const String _Text1 =
"""### **基本用法**
> 最常用于 SliverAppBar.flexibleSpace 字段
- 灵活的空格键随着应用滚动而扩展和收缩，以便 AppBar 从应用程序的顶部到达应用程序滚动内容的顶部;
- 要调整 AppBar 大小,必须将其包装在 FlexibleSpaceBar.createSettings 返回的 widget 中 ，以将大小调整信息传递给 FlexibleSpaceBar;
""";


class Demo extends StatefulWidget {
  static const String routeName = '/components/Bar/FlexibleSpaceBar';

  @override
  _DemoState createState() => _DemoState();
}

class _DemoState extends State<Demo> {
  @override
  Widget build(BuildContext context) {
    return WidgetDemo(
      title: 'FlexibleSpaceBar',
      codeUrl: 'components/Bar/FlexibleSpaceBar/demo.dart',
      contentList: allDomes(context, this),
      docUrl: 'https://docs.flutter.io/flutter/material/FlexibleSpaceBar-class.html',
    );
  }
}

//  所有的 FlexibleSpaceBar widget
//  context: 运行上下文
//  that: 指向有状态的 StatefulWidget
List allDomes(BuildContext context, _DemoState that) {
  return [
    _Text0,
    SizedBox(height: 20.0), // 间距
    _Text1,
    SizedBox(height: 20.0), // 间距
    FlexibleSpaceBarDemo.FlexibleSpaceBarLessDefault(),
    SizedBox(height: 20.0), // 间距
  ];
}