RefreshIndicator shows glow

[nt4f04uNd]

Steps to Reproduce

1. Execute flutter run on the code sample
2. Drag the list

Expected results: no glow

Actual results: glow

Note that glow doesn't start after the refresh indicator stops, it starts even during the drag. With the current drag extent percentage (the fraction of a viewport to drag for indicator to be fully extended) this might not be obvious, but if modified from 0.25 to 0.75 it's more clear. In the video the 0.75 version is shown.

Code sample

import 'package:flutter/material.dart';

void main() {
  runApp(const App());
}

class App extends StatelessWidget {
  const App({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'App',
      home: Scaffold(
        body: RefreshIndicator(
          triggerMode: RefreshIndicatorTriggerMode.anywhere,
          onRefresh: () => Future.delayed(const Duration(seconds: 1)),
          child: ListView.builder(
            itemBuilder: (context, index) => ListTile(
              title: Text('$index'),
            ),
            itemCount: 19,
          ),
        ),
      ),
    );
  }
}

Logs

[√] Flutter (Channel refresh, 2.6.0-12.0.pre.963, on Microsoft Windows [Version 10.0.19041.1348], locale ru-RU)
    • Flutter version 2.6.0-12.0.pre.963 at C:\dev\src\flutter
    • Upstream repository git@github.com:nt4f04und/flutter.git
    • FLUTTER_GIT_URL = git@github.com:nt4f04und/flutter.git
    • Framework revision 9067923d93 (19 hours ago), 2021-12-09 03:14:05 +0900
    • Engine revision 83b84d3336
    • Dart version 2.16.0 (build 2.16.0-80.0.dev)
    • DevTools version 2.9.1

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at C:\Users\danya\AppData\Local\Android\sdk
    X cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    X Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.7.7)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.7.30621.155
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 4.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] IntelliJ IDEA Community Edition (version 2020.3)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.3.3
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart

[√] VS Code (version 1.63.0)
    • VS Code at C:\Users\danya\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.29.0

[√] Connected device (4 available)
    • sdk gphone x86 (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • Windows (desktop)       • windows       • windows-x64    • Microsoft Windows [Version 10.0.19041.1348]
    • Chrome (web)            • chrome        • web-javascript • Google Chrome 96.0.4664.93
    • Edge (web)              • edge          • web-javascript • Microsoft Edge 96.0.1054.34

! Doctor found issues in 1 category.

video.mp4

[nt4f04uNd]

/cc @Piinks as I think she might be interested in this one

[danagbemava-nc]

Hi @nt4f04uNd, I'm not entirely sure that this is an issue with the RefreshIndicator unless I might be missing something. With just the ListView, I can see the glow, unless I'm misinterpreting what you're referring to as the "glow". See video below

Screen.Recording.2021-12-09.at.13.50.50.mov

[Piinks]

Thanks for reporting @nt4f04uNd! I am curious (I am not super familiar with native android), Is the glow disabled only on the edge where the refresh indicator appears from, or is there no glow at either end? Thanks!

[nt4f04uNd]

Glow isn't fully disabled, it still can be shown if user drags, but refresh indicator is not triggered, e.g. long distance fling that bumps into the start of the list.

On the edge where there's no refresh indicator the glow is shown normally.

Here's a video

video.mp4

[Piinks]

Oh wow! Thanks for the video, that is very helpful. This looks a bit more complex than I first thought, we'll have to find a way to distinguish what kind of gesture triggers the glow and which triggers the refresh, and communicate that across those widgets as far as who claimed it.

I am also curious what the Android 12 behavior is as there is no glowing indicator anymore.