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Description:

scrollview observer

Flutter ScrollView Observer #

Language: English | 中文
This is a library of widget that can be used to listen for child widgets those are being displayed in the scroll view.
☕ Support me #

Chat: Join WeChat group
📖 Article #

Flutter - Getting the items information those are currently displaying in ScrollView | WeChat | JueJin
Flutter - Scrolling to a specific item in the ScrollView！🔥 | WeChat | JueJin
Flutter - Quickly implement the effect of the chat session list, perfect 💯 | WeChat | JueJin
Flutter - New upgrade😱Supports observing ScrollView built by third package💪 | WeChat | JueJin
Flutter - Play alternately waterfall flow video 🎞 | WeChat | JueJin
Flutter - Keep IM message position greatly upgraded (supports generative messages like ChatGPT) 🤖 | WeChat | JueJin
Flutter - Anti-occlusion of form in ScrollView 🗒 | WeChat | JueJin
Flutter - Quickly achieve half-view exposure statistic 📊 | WeChat | JueJin
Flutter - How to quickly implement an contact list page (azlist) 📓 | WeChat | JueJin
Flutter - Supports observing NestedScrollView, with greater compatibility 😈 | WeChat | JueJin

🔨 Feature #

You do not need to change the view you are currently using, just wrap a ViewObserver around the view to achieve the following features.

Observing child widgets those are being displayed in ScrollView
Support for scrolling to a specific item in ScrollView
Quickly implement the chat session page effect
Support for keeping IM message position when inserting or updating messages, avoiding jitter.

🎀 Support #

PageView
ListView
SliverList
GridView
SliverGrid
Mixing usage of SliverPersistentHeader, SliverList and SliverGrid
NestedScrollView
ScrollView built by third-party package.

🕹 Preview #

🖥 Online Preview
🏞 Sample images

📦 Installing #
Add scrollview_observer to your pubspec.yaml file:
dependencies:
scrollview_observer: latest_version
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Import scrollview_observer in files that it will be used:
import 'package:scrollview_observer/scrollview_observer.dart';
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📚 Wiki #

Wiki Home
1、Observing child widgets those are being displayed in the ScrollView
2、Scrolling to the specified index location
3、Chat Observer

🖨 About Me #

GitHub: https://github.com/LinXunFeng
Email: linxunfeng@yeah.net
Blogs:

全栈行动: https://fullstackaction.com
掘金: https://juejin.cn/user/1820446984512392