ScrollSpy is a Flutter package that helps track and compute focused items within a scrollable viewport, ensuring a stable primary item for use cases like feeds, autoplay, and analytics. It provides real-time insights into which items are currently visible or in focus, enabling smooth user experiences across platforms. Designed for performance and accuracy, it works seamlessly with ScrollViews on Android, iOS, Web, macOS, Windows, and Linux. Ideal for apps requiring precise scroll state management.
Use cases
- Real-time feed tracking
- Autoplay content based on visibility
- Scroll-based analytics
- Dynamic UI updates
- Content highlighting
- Smooth navigation between items
Key features
- Tracks focused items in scrollable views
- Provides stable primary item reference
- Optimized for performance
- Cross-platform compatibility
- Supports multiple scrollable widgets
- Enables scroll-aware logic
Suitable for
- Feed or list-based apps
- Media players with autoplay
- Analytics dashboards
- Interactive tutorials
- Dynamic content layouts
Considerations
- Requires integration with ScrollView widgets
- May impact performance if overused
- Best suited for moderate to large scrollable lists
- Not ideal for simple static lists
- Needs careful state management in complex UIs