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https://github.com/fluttercandies/flutter_scrollview_observer

A widget for observing data related to the child widgets being displayed in a ScrollView. Maintainer: @LinXunFeng
https://github.com/fluttercandies/flutter_scrollview_observer

dart flutter gridview listview nestedscrollview observer scrollview scrollview-observer slivergrid sliverlist

Last synced: 5 days ago
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A widget for observing data related to the child widgets being displayed in a ScrollView. Maintainer: @LinXunFeng

Host: GitHub
URL: https://github.com/fluttercandies/flutter_scrollview_observer
Owner: fluttercandies
License: mit
Created: 2022-05-28T04:18:20.000Z (over 2 years ago)
Default Branch: main
Last Pushed: 2025-01-24T15:10:58.000Z (13 days ago)
Last Synced: 2025-01-26T07:01:43.351Z (12 days ago)
Topics: dart, flutter, gridview, listview, nestedscrollview, observer, scrollview, scrollview-observer, slivergrid, sliverlist
Language: Dart
Homepage: https://pub.dev/packages/scrollview_observer
Size: 6.4 MB
Stars: 469
Watchers: 8
Forks: 49
Open Issues: 7
Metadata Files:
- Readme: README-zh.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Codeowners: CODEOWNERS

Awesome Lists containing this project

README

        ![](https://github.com/LinXunFeng/flutter_assets/raw/main/flutter_scrollview_observer/banner.png)

# Flutter ScrollView Observer

[![author](https://img.shields.io/badge/author-LinXunFeng-blue.svg?style=flat-square&logo=Iconify)](https://github.com/LinXunFeng/) [![pub](https://img.shields.io/pub/v/scrollview_observer?&style=flat-square&label=pub&logo=dart)](https://pub.dev/packages/scrollview_observer) [![stars](https://img.shields.io/github/stars/fluttercandies/flutter_scrollview_observer?style=flat-square&logo=github)](https://github.com/fluttercandies/flutter_scrollview_observer)

Language: 中文 | [English](https://github.com/fluttercandies/flutter_scrollview_observer)

这是一个可用于监听滚动视图中正在显示的子部件的组件库。

## ☕ 请我喝一杯咖啡

[![ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/T6T4JKVRP) [![wechat](https://img.shields.io/static/v1?label=WeChat&message=微信收款码&color=brightgreen&style=for-the-badge&logo=WeChat)](https://cdn.jsdelivr.net/gh/FullStackAction/PicBed@resource20220417121922/image/202303181116760.jpeg)

微信技术交流群请看: [【微信群说明】](https://mp.weixin.qq.com/s/JBbMstn0qW6M71hh-BRKzw)

## 📖 文章

- [Flutter - 获取ListView当前正在显示的Widget信息](https://mp.weixin.qq.com/s/cN3qeinBPlo5rtEpoQBVVA) | [备用链接](https://juejin.cn/post/7103058155692621837)

- [Flutter - 列表滚动定位超强辅助库，墙裂推荐！🔥](https://mp.weixin.qq.com/s/fplqfBpXwvx6mEO6vflkww) | [备用链接](https://juejin.cn/post/7129888644290068487)

- [Flutter - 快速实现聊天会话列表的效果，完美💯](https://mp.weixin.qq.com/s/xNiGuSLcJtDAiLoHuGWp6A) | [备用链接](https://juejin.cn/post/7152307272436154405)

- [Flutter - 船新升级😱支持观察第三方构建的滚动视图💪](https://mp.weixin.qq.com/s/FMXPyT-lX8YOXVmbLCsVUA) | [备用链接](https://juejin.cn/post/7240751116702269477)

- [Flutter - 瀑布流交替播放视频 🎞](https://mp.weixin.qq.com/s/miP5CfKtcRhFGr08ot5wOg) | [备用链接](https://juejin.cn/post/7243240589293142077)

- [Flutter - IM保持消息位置大升级(支持ChatGPT生成式消息) 🤖](https://mp.weixin.qq.com/s/Y3EN9ZpLb6HLke2vkw0Zwg) | [备用链接](https://juejin.cn/post/7245753944180523067)

- [Flutter - 滚动视图中的表单防遮挡 🗒](https://mp.weixin.qq.com/s/iaHyYMjZSPBggLw2yZv8dQ) | [备用链接](https://juejin.cn/spost/7266455050632921107)

- [Flutter - 秒杀1/2曝光统计 📊](https://mp.weixin.qq.com/s/gNFX4Au4esftgTPXHvB4LQ) | [备用链接](https://juejin.cn/post/7271248528998121512)

- [Flutter - 如何快速搓一个微信通讯录列表(azlist) 📓](https://mp.weixin.qq.com/s/1bmYSvtOYX83DLncvnBjqA) | [备用链接](https://juejin.cn/post/7294884963631497254)

- [Flutter - 支持观察NestedScrollView，兼容性更强 😈](https://mp.weixin.qq.com/s/1dsmRg8q2VJ6HzasLgoVpA) | [备用链接](https://juejin.cn/post/7388444606456840211)

- [Flutter - 轻松实现PageView卡片偏移效果](https://mp.weixin.qq.com/s/Q8zk89bgr_8bgWQ4F86VUQ) | [备用链接](https://juejin.cn/post/7411516362916216859)

- [Flutter - 轻松搞定炫酷视差(Parallax)效果](https://mp.weixin.qq.com/s/Fi-X2eJRWj17sqCcVqbPRQ) | [备用链接](https://juejin.cn/post/7416655730214699017)

## 🔨 功能点

> 不需要改变你当前所使用视图，只需要在视图外包裹一层即可实现如下功能点

- [x] 监听滚动视图中正在显示的子部件

- [x] 支持滚动到指定下标位置

- [x] 快速实现聊天会话列表的效果

- [x] 支持在插入或更新消息时保持IM消息位置，避免抖动

## 🎀 支持

- [x] `PageView`

- [x] `ListView`

- [x] `SliverList`

- [x] `GridView`

- [x] `SliverGrid`

- [x] 支持 `SliverPersistentHeader`，`SliverList` 和 `SliverGrid` 混合使用

- [x] `NestedScrollView`

- [x] 由第三方库构建的 `ScrollView`

## 🕹 预览

- 🖥 [在线预览](https://fluttercandies.github.io/flutter_scrollview_observer/)

- 🏞 [示例图片](https://github.com/fluttercandies/flutter_scrollview_observer/wiki/Example)

## 📦 安装

在你的 `pubspec.yaml` 文件中添加 `scrollview_observer` 依赖:

```yaml

dependencies:

  scrollview_observer: latest_version

```

在需要使用的地方导入 `scrollview_observer` :

```dart

import 'package:scrollview_observer/scrollview_observer.dart';

```

## 📚 指南

- [Wiki首页](https://github.com/fluttercandies/flutter_scrollview_observer/wiki/%E9%A6%96%E9%A1%B5)

- [1、监听滚动视图中正在显示的子部件](https://github.com/fluttercandies/flutter_scrollview_observer/wiki/1%E3%80%81%E7%9B%91%E5%90%AC%E6%BB%9A%E5%8A%A8%E8%A7%86%E5%9B%BE%E4%B8%AD%E6%AD%A3%E5%9C%A8%E6%98%BE%E7%A4%BA%E7%9A%84%E5%AD%90%E9%83%A8%E4%BB%B6)

- [2、滚动到指定下标位置](https://github.com/fluttercandies/flutter_scrollview_observer/wiki/2%E3%80%81%E6%BB%9A%E5%8A%A8%E5%88%B0%E6%8C%87%E5%AE%9A%E4%B8%8B%E6%A0%87%E4%BD%8D%E7%BD%AE)

- [3、聊天会话](https://github.com/fluttercandies/flutter_scrollview_observer/wiki/3%E3%80%81%E8%81%8A%E5%A4%A9%E4%BC%9A%E8%AF%9D)

## 🖨 关于我

- GitHub: [https://github.com/LinXunFeng](https://github.com/LinXunFeng)

- Email: [[email protected]](mailto:[email protected])

- Blogs: 

  - 全栈行动: [https://fullstackaction.com](https://fullstackaction.com)

  - 掘金: [https://juejin.cn/user/1820446984512392](https://juejin.cn/user/1820446984512392)