【问题标题】:How to remove InkWell hover color overflow outside parent ListView in Flutter?如何在 Flutter 中删除父 ListView 之外的 InkWell 悬停颜色溢出?
【发布时间】:2022-01-17 09:12:35
【问题描述】:

我有一个包含一些静态内容的页面和一个使用 InkWell 的带有自定义列表图块的 ListView。这是我的问题:如果您将光标悬停在靠近 ListView 顶部或底部的 InkWell 上并开始滚动,则悬停颜色会显示在 ListView 的边界之外,即使其他内容已按照您的预期进行剪辑。我需要列表项上的悬停状态,但不希望悬停颜色超出 ListView 的预期边界。有没有办法确保 ListView 也为这些 InkWell 剪辑悬停颜色,或者我应该查看不同的/自定义小部件解决方案?我尝试用不同的父级(容器等)包装 InkWell,并尝试在几个地方设置 clipBehavior,但无济于事。

这是一个从随机 Flutter 示例复制的简单案例。注意CustomListItem 中的 InkWell 和MyStatelessWidget 中的 ListView。

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const MyStatelessWidget(),
      ),
    );
  }
}

class CustomListItem extends StatelessWidget {
  const CustomListItem({
    Key? key,
    required this.thumbnail,
    required this.title,
    required this.user,
    required this.viewCount,
  }) : super(key: key);

  final Widget thumbnail;
  final String title;
  final String user;
  final int viewCount;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 5.0),
      child: InkWell(
        onTap: () {},
        hoverColor: Colors.pink,
        child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Expanded(
            flex: 2,
            child: thumbnail,
          ),
          Expanded(
            flex: 3,
            child: _VideoDescription(
              title: title,
              user: user,
              viewCount: viewCount,
            ),
          ),
          const Icon(
            Icons.more_vert,
            size: 16.0,
          ),
        ],
      ),),
    );
  }
}

class _VideoDescription extends StatelessWidget {
  const _VideoDescription({
    Key? key,
    required this.title,
    required this.user,
    required this.viewCount,
  }) : super(key: key);

  final String title;
  final String user;
  final int viewCount;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.fromLTRB(5.0, 0.0, 0.0, 0.0),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Text(
            title,
            style: const TextStyle(
              fontWeight: FontWeight.w500,
              fontSize: 14.0,
            ),
          ),
          const Padding(padding: EdgeInsets.symmetric(vertical: 2.0)),
          Text(
            user,
            style: const TextStyle(fontSize: 10.0),
          ),
          const Padding(padding: EdgeInsets.symmetric(vertical: 1.0)),
          Text(
            '$viewCount views',
            style: const TextStyle(fontSize: 10.0),
          ),
        ],
      ),
    );
  }
}

class MyStatelessWidget extends StatelessWidget {
  const MyStatelessWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Column(
        children: [
          Container(
            padding: const EdgeInsets.only(bottom: 20),
            child: const Text('Hover over the first list item and scroll... the content is clipped, but not the hover color...'),
          ),
          Expanded(
            child: ListView(
      padding: const EdgeInsets.all(8.0),
      itemExtent: 106.0,
      children: <CustomListItem>[
        CustomListItem(
          user: 'Flutter1',
          viewCount: 999001,
          thumbnail: Container(
            decoration: const BoxDecoration(color: Colors.blue),
          ),
          title: 'Test One...',
        ),
        CustomListItem(
          user: 'Flutter2',
          viewCount: 999002,
          thumbnail: Container(
            decoration: const BoxDecoration(color: Colors.orange),
          ),
          title: 'Test Two...',
        ),
        CustomListItem(
          user: 'Flutter3',
          viewCount: 999003,
          thumbnail: Container(
            decoration: const BoxDecoration(color: Colors.blue),
          ),
          title: 'Test Three...',
        ),
        CustomListItem(
          user: 'Flutter4',
          viewCount: 999004,
          thumbnail: Container(
            decoration: const BoxDecoration(color: Colors.orange),
          ),
          title: 'Test Four...',
        ),
        CustomListItem(
          user: 'Flutter5',
          viewCount: 999005,
          thumbnail: Container(
            decoration: const BoxDecoration(color: Colors.blue),
          ),
          title: 'Test Five...',
        ),
      ],
    ),
          ),
        ],
      );
  }
}

视觉参考图片:

【问题讨论】:

    标签: flutter flutter-layout flutter-web flutter-listview


    【解决方案1】:

    您可以将HoverWidgetHoverContainer 用于指定的列表视图。

    HoverWidget(
                hoverChild: Container(
                  height: 200,
                  width: 200,
                  color: Colors.green,
                  child: Center(child: Text('Hover Me..')),
                )
    HoverContainer(
                  width: 200,
                  height: 200,
                  hoverHeight: 220,
                  hoverWidth: 220,
                  color: Colors.red,
                  hoverColor: Colors.green,
                )
    

    更多详情见其官网:https://pub.dev/packages/hovering/example

    【讨论】:

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