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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.

  • 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

📦 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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