Enhance User Experience with ElasticListView for Flutter

Published on by Flutter News Hub

Enhance User Experience with ElasticListView for Flutter

Flutter's ElasticListView is a powerful widget that enhances the user experience by adding an elastic effect to lists. It dynamically adjusts item padding based on scroll speed, creating a rubber-like feel.

Features

  • Elastic Effect: Dynamically calculates item padding based on scroll speed, resulting in an elastic behavior.
  • Drag to Scroll: Enables smooth scrolling by default, which can be disabled if desired.
  • Performance Optimization: Leverages the performance advantages of ListView for optimal performance.

Compatibility

ElasticListView maintains full compatibility with ListView, making it a seamless replacement. It introduces new properties for controlling the elastic effect, providing extended functionality.

New Properties

  • curve: Curve applied to elastic effect animation (defaults to Curves.easeOut).
  • animationDuration: Duration of elastic effect animation (defaults to 200 milliseconds).
  • enableDragScrolling: Enables or disables drag scrolling (defaults to true).
  • elasticityFactor: Factor that determines the dynamic padding change based on scroll speed (defaults to 4).

Usage

To use ElasticListView, simply replace ListView with ElasticListView while retaining all other properties:

For ListView:

ElasticListView(
  children: [
    ListTile(leading: Icon(Icons.map), title: Text('Map')),
    ListTile(leading: Icon(Icons.photo_album), title: Text('Album')),
    ListTile(leading: Icon(Icons.phone), title: Text('Phone')),
  ],
)

For ListView.builder:

ElasticListView.builder(
  itemCount: 10,
  itemBuilder: (context, index) => ListTile(title: Text('Item $index')),
)

For ListView.separated:

ElasticListView.separated(
  itemCount: 10,
  separatorBuilder: (context, index) => Divider(),
  itemBuilder: (context, index) => ListTile(title: Text('Item $index')),
)

Conclusion

ElasticListView adds an interactive and visually appealing elastic effect to Flutter lists, while maintaining full compatibility with ListView. With its extended functionality and performance optimizations, it's an ideal choice for enhancing user experience in Flutter applications.

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