[Bug]: Magnetometer doesn't emit any event when used together with userAccelerometerEvents in IOS

[satcar77]

Platform

IOS 16.4.1

Plugin

sensors_plus

Version

2.0.2

Flutter SDK

3.7.6

Steps to reproduce

1. Add listeners to magnetometerEvents and userAccelerometerEvents.
2. Only the userAccelerometerEvents listener gets the callback. It normally functions if you remove userAccelerometerEvents or replace it with other events such as gyroscopeEvents.

Code Sample

magnetometerEvents.listen(
  (MagnetometerEvent event) {
    print(event);
  },
);

userAccelerometerEvents.listen(
  (UserAccelerometerEvent event) {
    print(event);
  },
);

Logs

flutter: [UserAccelerometerEvent (x: 0.00033765193074941635, y: -0.008823873102664949, z: -0.05163027048110962)]
flutter: [UserAccelerometerEvent (x: 0.0052408562973141675, y: -0.025047849863767627, z: -0.12399991750717164)]
flutter: [UserAccelerometerEvent (x: -0.007205872796475888, y: -0.03034840561449528, z: -0.11486769914627076)]
flutter: [UserAccelerometerEvent (x: -0.019313909485936167, y: -0.043341547623276716, z: -0.02140469551086426)]
flutter: [UserAccelerometerEvent (x: -0.008134924434125425, y: -0.04241667613387108, z: 0.06308321952819824)]
flutter: [UserAccelerometerEvent (x: -0.00016354601830244065, y: -0.03454762920737267, z: 0.018372499942779542)]
flutter: [UserAccelerometerEvent (x: 0.009624873474240304, y: -0.025778006762266163, z: -0.08061341047286988)]
flutter: [UserAccelerometerEvent (x: 0.022146717458963395, y: -0.0005707271397113801, z: -0.12247009277343751)]
flutter: [UserAccelerometerEvent (x: 0.009547221288084985, y: 0.02615599073469639, z: -0.07640186548233033)]
flutter: [UserAccelerometerEvent (x: 0.005205881781876087, y: 0.04162060432136059, z: 0.04142793416976929)]
flutter: [UserAccelerometerEvent (x: -0.0013410335406661034, y: 0.035726376250386244, z: 0.10899606943130494)]
flutter: [UserAccelerometerEvent (x: 0.007025587931275368, y: 0.03428754732012749, z: 0.04408044815063477)]
flutter: [UserAccelerometerEvent (x: 0.00497299823909998, y: 0.02308672145009041, z: -0.06883043050765991)]
flutter: [UserAccelerometerEvent (x: -0.0008636204525828362, y: -0.005042536556720734, z: -0.12206412553787233)]
flutter: [UserAccelerometerEvent (x: -0.016903186962008477, y: -0.0207238607108593, z: -0.10306661128997803)]
flutter: [UserAccelerometerEvent (x: -0.021368452347815037, y: -0.03643203638494015, z: -0.06148972511291504)]
flutter: [UserAccelerometerEvent (x: -0.016401660442352296, y: -0.039052660763263705, z: -0.01288522481918335)]
flutter: [UserAccelerometerEvent (x: -0.0046854168176651, y: -0.035647774860262875, z: -0.04084614515304566)]
flutter: [UserAccelerometerEvent (x: 0.006028713844716549, y: -0.014632289484143258, z: 0.021215438842773438)]
flutter: [UserAccelerometerEvent (x: 0.009835551120340826, y: 0.012740781530737879, z: 0.015226984024047853)]
flutter: [UserAccelerometerEvent (x: 0.018762020394206047, y: 0.03419507294893265, z: -0.0006291031837463379)]
flutter: [UserAccelerometerEvent (x: 0.02220136057585478, y: 0.06299815624952317, z: -0.004524052143096924)]
flutter: [UserAccelerometerEvent (x: 0.0025637634098529816, y: 0.07315644584596158, z: -0.04370894432067871)]
flutter: [UserAccelerometerEvent (x: -0.004341102205216885, y: 0.0725798774510622, z: -0.060311543941497806)]
flutter: [UserAccelerometerEvent (x: -0.024225446768105032, y: 0.06467987187206746, z: -0.06898288726806641)]
flutter: [UserAccelerometerEvent (x: -0.03240148816257715, y: 0.03157054223120213, z: -0.07571318149566651)]
flutter: [UserAccelerometerEvent (x: -0.03954154644161463, y: 0.002819792926311493, z: -0.0097694993019104)]
flutter: [UserAccelerometerEvent (x: -0.03317034337669611, y: -0.019587937369942666, z: 0.04136426448822022)]
flutter: [UserAccelerometerEvent (x: -0.018047224171459677, y: -0.02624342702329159, z: 0.02475523948669434)]
flutter: [UserAccelerometerEvent (x: -0.008335297740995885, y: -0.033403838425874716, z: -0.006955182552337647)]
flutter: [UserAccelerometerEvent (x: 0.0008581168949604036, y: -0.035954459011554724, z: -0.07903451919555665)]
flutter: [UserAccelerometerEvent (x: 0.02455362491309643, y: -0.025596781820058825, z: -0.11088279485702515)]

Flutter Doctor

[✓] Flutter (Channel stable, 3.7.6, on macOS 13.3.1 22E261 darwin-arm64, locale en-US)
    • Flutter version 3.7.6 on channel stable at /Users/me/development/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 12cb4eb7a0 (8 weeks ago), 2023-03-01 10:29:26 -0800
    • Engine revision ada363ee93
    • Dart version 2.19.3
    • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at /Users/me/Library/Android/sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14E222b
    • CocoaPods version 1.12.0

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • 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 11.0.15+0-b2043.56-8887301)

[✓] VS Code (version 1.77.3)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.62.0

[✓] Connected device (3 available)
    •Test iPhone (mobile) • 00008030-000D38803632402E • ios            • iOS 16.4.1 20E252
    • macOS (desktop)                  • macos                     • darwin-arm64   • macOS 13.3.1 22E261 darwin-arm64
    • Chrome (web)                     • chrome                    • web-javascript • Google Chrome 112.0.5615.137

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

Checklist before submitting a bug

• I Google'd a solution and I couldn't find it
• I searched on StackOverflow for a solution and I couldn't find it
• I read the README.md file of the plugin
• I'm using the latest version of the plugin
• All dependencies are up to date with flutter pub upgrade
• I did a flutter clean
• I tried running the example project

[vbuberen]

Hi there. Thanks for reporting the problem. Could I ask you to try a potential fix for the issue?
I don't have iOS device nearby, so can't validate if my changes would help.

To add a dependency from a specific branch you would need to declare it like this:

  sensors_plus:
    git:
      url: https://github.com/fluttercommunity/plus_plugins
      ref: fix/sensors_plus_ios
      path: packages/sensors_plus/sensors_plus

In case the problem is gone I will merge this branch and release in next release of plugins.

[vbuberen]

@satcar77 The potential fix is also available in sensors_plus 4.0.1
Would appreciate your feedback if the issue is resolved for you.

[satcar77]

@vbuberen The issue persists even after that update or using the code from the branch. MagnetometerEvent is emitted when used together with all other events except UserAcceleroMeterEvents.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 15 days

[vbuberen]

I believe this issue could be fixed with recently merged PRs like this one #2250

Could you try to use sensors_plus dependency from the main branch and provide a feedback if the issue is resolved?
You can do it by declaring the dependency this way:

sensors_plus:
       git:
         url: git@github.com:fluttercommunity/plus_plugins.git
         ref: main

[vbuberen]

New version 4.0.1 is released, so you can try the stable version now.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 15 days