[BUG] AnimationController callback is not executing in background mode

[JLoRenderer]

Describe the bug
Callback form an AnimationController is not executing in background mode.

To Reproduce
AnimationController? _controller;
_controller = AnimationController(
vsync: this,
duration: Duration(seconds: 10),
);
_controller!.addStatusListener((status) {
switch (status) {
case AnimationStatus.forward:
_onStart();
break;

    case AnimationStatus.reverse:
      _onStart();
      break;

    case AnimationStatus.dismissed:
      _onComplete();
      break;
    case AnimationStatus.completed:

    default:
    // Do nothing
  }

void _onComplete() {
debugPrint("this does not get called while the screen is off");
}

Expected behavior
The animation should be continiued in the background and the callback should be called, after AnimationStatus is updated.

Screenshots
Not applicable.

Smartphone:

• Device: Android Emulator API 32 & Samsung Node 9 Android 11

Logs

I don't feel comfortable to share this information , but I looked at it and there was nothing which would explain this. ``` ```

flutter doctor -v
[√] Flutter (Channel stable, 3.0.5, on Microsoft Windows [Version 10.0.19044.2130], locale de-DE)
• Flutter version 3.0.5 at C:\src\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision f1875d570e (3 months ago), 2022-07-13 11:24:16 -0700
• Engine revision e85ea0e79c
• Dart version 2.17.6
• DevTools version 2.12.2

[√] Android toolchain - develop for Android devices (Android SDK version 32.0.0-rc1)
• Android SDK at C:\Users\Johannes\AppData\Local\Android\Sdk
• Platform android-Tiramisu, build-tools 32.0.0-rc1
• ANDROID_HOME = C:\Users\Johannes\AppData\Local\Android\Sdk
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
• All Android licenses accepted.

[√] Chrome - develop for the web
• Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.2.3)
• Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
• Visual Studio Community 2022 version 17.2.32526.322
• Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2021.2)
• 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 11.0.12+7-b1504.28-7817840)

[√] VS Code, 64-bit edition (version 1.71.2)
• VS Code at C:\Program Files\Microsoft VS Code
• Flutter extension version 3.48.0

[√] Connected device (4 available)
• sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64 • Android 12 (API 32) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19044.2130]
• Chrome (web) • chrome • web-javascript • Google Chrome 106.0.5249.119
• Edge (web) • edge • web-javascript • Microsoft Edge 105.0.1343.42

[√] HTTP Host Availability
• All required HTTP hosts are available

• No issues found!

[JLoRenderer]

To clarify: The animation continues while the screen is off , but the callback is not executed.

[atreeon]

Did you manage to get this to work @JLoRenderer ?

[JLoRenderer]

@atreeon Sadly not, but I also didn't try very hard, was just for a personal project. Also was a long time ago, don't know if it is fixed yet.