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This is a library of widget that can be used to listen for child widgets those are being displayed in the scroll view.

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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.

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

• 🖥 Online Preview
• 🏞 Sample images

Add scrollview_observer to your pubspec.yaml file:

dependencies:
  scrollview_observer: latest_version

Import scrollview_observer in files that it will be used:

import 'package:scrollview_observer/scrollview_observer.dart';

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

• GitHub: https://github.com/LinXunFeng
• Email: linxunfeng@yeah.net
• Blogs:
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  • 掘金: https://juejin.cn/user/1820446984512392