flutter_html 组件中使用滚动条的代码例子

以下是一个Flutter HTML页面中使用滚动条的代码例子：

import 'package:flutter/material.dart';
import 'package:flutter_html/flutter_html.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter HTML Scrollbar'),
        ),
        body: SingleChildScrollView(
          child: Html(
            data: """
              <h1>Website Title</h1>
              <p>This is a long paragraph that needs a scrollbar if it overflows.</p>
              <p>This is another long paragraph that also needs a scrollbar if it overflows.</p>
              <p>This is a third long paragraph that also needs a scrollbar if it overflows.</p>
              <p>This is a fourth long paragraph that also needs a scrollbar if it overflows.</p>
            """,
            style: {
              "h1": Style(
                fontSize: FontSize.large,
              ),
              "p": Style(
                fontSize: FontSize.medium,
              ),
            },
          ),
        ),
      ),
    );
  }
}

这是一个基本的示例，使用Flutter HTML插件来渲染HTML内容，并在外部包裹了一个SingleChildScrollView小部件，以实现滚动功能。你可以根据自己的需要进行自定义样式和HTML内容。