Bug when change scroll direction

[Kaon81]

Similar to #51
The problem is different behaviour when list has one element and 100 elements.

1. One element
   I can scroll up and down during dragging

2. 100 elements
   When I change scroll direction refresh will be hide

There is possibility to make it consistent?

[gonuit]

Hi @Kaon81 👋🏻,

Unfortunately, this is the current behavior of the built-in RefreshIndicator widget, caused by the current implementation of the underlying scroll mechanism (flutter/flutter#71075 / flutter/flutter#36158).

However, I have created a workaround that you can give a try.

---

How to

1. Use the version 3.1.0-dev.1 of the custom_refresh_indicator package.
2. Assign the newly added ClampingWithOverscrollPhysics scroll physics and provide the IndicatorController as a state parameter.

Example

A minimal working example might look like the following:

import 'package:flutter/material.dart';
import 'package:custom_refresh_indicator/custom_refresh_indicator.dart';

class RefreshList extends StatefulWidget {
  const RefreshList({
    super.key,
  });

  @override
  State<RefreshList> createState() => _RefreshListState();
}

class _RefreshListState extends State<RefreshList> {
  final _controller = IndicatorController();
  @override
  Widget build(BuildContext context) {
    return CustomMaterialIndicator(
      controller: _controller,
      onRefresh: () => Future.delayed(const Duration(seconds: 2)),
      indicatorBuilder: (context, controller) => const Icon(Icons.ac_unit, size: 30),
      child: ListView.builder(
        physics: AlwaysScrollableScrollPhysics(
          parent: ClampingWithOverscrollPhysics(state: _controller),
        ),
        itemBuilder: (context, index) => ListTile(
          title: Text('${index + 1}'),
        ),
      ),
    );
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }
}

Demo

The source code for the demo below can be found HERE.

---

Notes

• It is still just a workaround, in most cases it works, but it may not yet be the final solution for this package.