Flutter ScrollView Observer

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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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📖 Article

🔨 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.

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

🎀 Support

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

🏞 Related Example

📦 Installing

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';

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scrollview_observer