[Bug]: Sensors_plus 3.1.0 example fails with "channel sent a message from native to Flutter on a non-platform thread."

[wjmetcalfiiii]

Platform

iOS 17.0.3

Plugin

sensors_plus

Version

3.1.0

Flutter SDK

3.16.0-0.3.pre

Steps to reproduce

The sensors_plus 3.1.0 example located at https://pub.dev/packages/sensors_plus/example

produces the same error seen in https://github.com/fluttercommunity/plus_plugins/issues/2315

though this time all of the sensors are throwing this error instead of just two in #2315

Syncing files to device William’s iPhone... [ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/user_accel' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel. See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.

[ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/accelerometer' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel. See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.

[ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/gyroscope' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel. See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.

[ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/magnetometer' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel. See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.

Code Sample

Here is Main.Dart

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// ignore_for_file: public_member_api_docs

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:sensors_plus/sensors_plus.dart';

import 'snake.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  SystemChrome.setPreferredOrientations(
    [
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown,
    ],
  );

  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Sensors Demo',
      theme: ThemeData(
        useMaterial3: true,
        colorSchemeSeed: const Color(0x9f4376f8),
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, this.title}) : super(key: key);

  final String? title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  static const int _snakeRows = 20;
  static const int _snakeColumns = 20;
  static const double _snakeCellSize = 10.0;

  List<double>? _userAccelerometerValues;
  List<double>? _accelerometerValues;
  List<double>? _gyroscopeValues;
  List<double>? _magnetometerValues;
  final _streamSubscriptions = <StreamSubscription<dynamic>>[];

  @override
  Widget build(BuildContext context) {
    final userAccelerometer = _userAccelerometerValues
        ?.map((double v) => v.toStringAsFixed(1))
        .toList();
    final accelerometer =
        _accelerometerValues?.map((double v) => v.toStringAsFixed(1)).toList();
    final gyroscope =
        _gyroscopeValues?.map((double v) => v.toStringAsFixed(1)).toList();
    final magnetometer =
        _magnetometerValues?.map((double v) => v.toStringAsFixed(1)).toList();

    return Scaffold(
      appBar: AppBar(
        title: const Text('Sensors Plus Example'),
        elevation: 4,
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: <Widget>[
          Center(
            child: DecoratedBox(
              decoration: BoxDecoration(
                border: Border.all(width: 1.0, color: Colors.black38),
              ),
              child: SizedBox(
                height: _snakeRows * _snakeCellSize,
                width: _snakeColumns * _snakeCellSize,
                child: Snake(
                  rows: _snakeRows,
                  columns: _snakeColumns,
                  cellSize: _snakeCellSize,
                ),
              ),
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(16.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: <Widget>[
                Text('UserAccelerometer: $userAccelerometer'),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(16.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: <Widget>[
                Text('Accelerometer: $accelerometer'),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(16.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: <Widget>[
                Text('Gyroscope: $gyroscope'),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(16.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: <Widget>[
                Text('Magnetometer: $magnetometer'),
              ],
            ),
          ),
        ],
      ),
    );
  }

  @override
  void dispose() {
    super.dispose();
    for (final subscription in _streamSubscriptions) {
      subscription.cancel();
    }
  }

  @override
  void initState() {
    super.initState();
    _streamSubscriptions.add(
      userAccelerometerEvents.listen(
        (UserAccelerometerEvent event) {
          setState(() {
            _userAccelerometerValues = <double>[event.x, event.y, event.z];
          });
        },
        onError: (e) {
          showDialog(
              context: context,
              builder: (context) {
                return const AlertDialog(
                  title: Text("Sensor Not Found"),
                  content: Text(
                      "It seems that your device doesn't support Accelerometer Sensor"),
                );
              });
        },
        cancelOnError: true,
      ),
    );
    _streamSubscriptions.add(
      accelerometerEvents.listen(
        (AccelerometerEvent event) {
          setState(() {
            _accelerometerValues = <double>[event.x, event.y, event.z];
          });
        },
        onError: (e) {
          showDialog(
              context: context,
              builder: (context) {
                return const AlertDialog(
                  title: Text("Sensor Not Found"),
                  content: Text(
                      "It seems that your device doesn't support Gyroscope Sensor"),
                );
              });
        },
        cancelOnError: true,
      ),
    );
    _streamSubscriptions.add(
      gyroscopeEvents.listen(
        (GyroscopeEvent event) {
          setState(() {
            _gyroscopeValues = <double>[event.x, event.y, event.z];
          });
        },
        onError: (e) {
          showDialog(
              context: context,
              builder: (context) {
                return const AlertDialog(
                  title: Text("Sensor Not Found"),
                  content: Text(
                      "It seems that your device doesn't support User Accelerometer Sensor"),
                );
              });
        },
        cancelOnError: true,
      ),
    );
    _streamSubscriptions.add(
      magnetometerEvents.listen(
        (MagnetometerEvent event) {
          setState(() {
            _magnetometerValues = <double>[event.x, event.y, event.z];
          });
        },
        onError: (e) {
          showDialog(
              context: context,
              builder: (context) {
                return const AlertDialog(
                  title: Text("Sensor Not Found"),
                  content: Text(
                      "It seems that your device doesn't support Magnetometer Sensor"),
                );
              });
        },
        cancelOnError: true,
      ),
    );
  }
}

Logs

Partial log.

Build settings for action build and target Flutter:
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                        CLANG_ENABLE_EXPLICIT_MODULES = NO
                        CLANG_ENABLE_MODULES = YES
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                        MTL_FAST_MATH = YES
                        NATIVE_ARCH = arm64e
                        NATIVE_ARCH_32_BIT = i386
                        NATIVE_ARCH_64_BIT = arm64e
                        NATIVE_ARCH_ACTUAL = arm64e
                        NO_COMMON = YES
                        OBJC_ABI_VERSION = 2
                        OBJECT_FILE_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/Objects
                        OBJECT_FILE_DIR_normal = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/Objects-normal
                        OBJROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios
                        ONLY_ACTIVE_ARCH = NO
                        OS = MACOS
                        OSAC = /usr/bin/osacompile
                        PASCAL_STRINGS = YES
                        PATH = /Applications/Xcode.app/Contents/Developer/usr/bin:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/wjmetcalfiii/Downloads/flutter/bin
                        PATH_PREFIXES_EXCLUDED_FROM_HEADER_DEPENDENCIES = /usr/include /usr/local/include /System/Library/Frameworks /System/Library/PrivateFrameworks
                        /Applications/Xcode.app/Contents/Developer/Headers /Applications/Xcode.app/Contents/Developer/SDKs /Applications/Xcode.app/Contents/Developer/Platforms
                        PKGINFO_FILE_PATH = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/PkgInfo
                        PLATFORM_DEVELOPER_APPLICATIONS_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Applications
                        PLATFORM_DEVELOPER_BIN_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin
                        PLATFORM_DEVELOPER_LIBRARY_DIR = /Applications/Xcode.app/Contents/Frameworks/Xcode3Core.framework/SharedSupport/Developer/Library
                        PLATFORM_DEVELOPER_SDK_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs
                        PLATFORM_DEVELOPER_TOOLS_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Tools
                        PLATFORM_DEVELOPER_USR_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr
                        PLATFORM_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform
                        PLATFORM_DISPLAY_NAME = iOS Simulator
                        PLATFORM_NAME = iphonesimulator
                        PLATFORM_PREFERRED_ARCH = undefined_arch
                        PLATFORM_PRODUCT_BUILD_VERSION = 21A325
                        PLIST_FILE_OUTPUT_FORMAT = binary
                        PODS_BUILD_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios
                        PODS_CONFIGURATION_BUILD_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Release-iphonesimulator
                        PODS_DEVELOPMENT_LANGUAGE = en
                        PODS_ROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Pods
                        PODS_TARGET_SRCROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Pods/../Flutter
                        PODS_XCFRAMEWORKS_BUILD_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Release-iphonesimulator/XCFrameworkIntermediates
                        PRECOMPS_INCLUDE_HEADERS_FROM_BUILT_PRODUCTS_DIR = YES
                        PRECOMP_DESTINATION_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/PrefixHeaders
                        PRESERVE_DEAD_CODE_INITS_AND_TERMS = NO
                        PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.Flutter
                        PRODUCT_MODULE_NAME = Flutter
                        PRODUCT_NAME = Flutter
                        PRODUCT_SETTINGS_PATH = 
                        PROFILING_CODE = NO
                        PROJECT = Pods
                        PROJECT_DERIVED_FILE_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/DerivedSources
                        PROJECT_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Pods
                        PROJECT_FILE_PATH = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Pods/Pods.xcodeproj
                        PROJECT_NAME = Pods
                        PROJECT_TEMP_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build
                        PROJECT_TEMP_ROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios
                        RECURSIVE_SEARCH_PATHS_FOLLOW_SYMLINKS = YES
                        REMOVE_CVS_FROM_RESOURCES = YES
                        REMOVE_GIT_FROM_RESOURCES = YES
                        REMOVE_HEADERS_FROM_EMBEDDED_BUNDLES = YES
                        REMOVE_HG_FROM_RESOURCES = YES
                        REMOVE_STATIC_EXECUTABLES_FROM_EMBEDDED_BUNDLES = YES
                        REMOVE_SVN_FROM_RESOURCES = YES
                        REZ_COLLECTOR_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/ResourceManagerResources
                        REZ_OBJECTS_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/ResourceManagerResources/Objects
                        SCAN_ALL_SOURCE_FILES_FOR_INCLUDES = NO
                        SDKROOT = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator17.0.sdk
                        SDK_DIR = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator17.0.sdk
                        SDK_DIR_iphonesimulator17_0 = /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator17.0.sdk
                        SDK_NAME = iphonesimulator17.0
                        SDK_NAMES = iphonesimulator17.0
                        SDK_PRODUCT_BUILD_VERSION = 21A325
                        SDK_STAT_CACHE_ENABLE = YES
                        SDK_VERSION = 17.0
                        SDK_VERSION_ACTUAL = 170000
                        SDK_VERSION_MAJOR = 170000
                        SDK_VERSION_MINOR = 170000
                        SED = /usr/bin/sed
                        SEPARATE_STRIP = NO
                        SEPARATE_SYMBOL_EDIT = NO
                        SET_DIR_MODE_OWNER_GROUP = YES
                        SET_FILE_MODE_OWNER_GROUP = NO
                        SHALLOW_BUNDLE = NO
                        SHARED_DERIVED_FILE_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Release-iphonesimulator/Flutter/DerivedSources
                        SHARED_PRECOMPS_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/SharedPrecompiledHeaders
                        SKIP_INSTALL = YES
                        SOURCE_ROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Pods
                        SRCROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Pods
                        STRINGSDATA_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build/Objects-normal/x86_64
                        STRINGSDATA_ROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build
                        STRINGS_FILE_INFOPLIST_RENAME = YES
                        STRINGS_FILE_OUTPUT_ENCODING = binary
                        STRIP_BITCODE_FROM_COPIED_FILES = NO
                        STRIP_INSTALLED_PRODUCT = NO
                        STRIP_STYLE = all
                        STRIP_SWIFT_SYMBOLS = YES
                        SUPPORTED_DEVICE_FAMILIES = 1,2
                        SUPPORTED_PLATFORMS = iphonesimulator iphoneos
                        SUPPORTS_TEXT_BASED_API = NO
                        SWIFT_COMPILATION_MODE = wholemodule
                        SWIFT_EMIT_LOC_STRINGS = NO
                        SWIFT_OPTIMIZATION_LEVEL = -O
                        SWIFT_PLATFORM_TARGET_PREFIX = ios
                        SWIFT_VERSION = 5.0
                        SYMROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/build
                        SYSTEM_ADMIN_APPS_DIR = /Applications/Utilities
                        SYSTEM_APPS_DIR = /Applications
                        SYSTEM_CORE_SERVICES_DIR = /System/Library/CoreServices
                        SYSTEM_DEMOS_DIR = /Applications/Extras
                        SYSTEM_DEVELOPER_APPS_DIR = /Applications/Xcode.app/Contents/Developer/Applications
                        SYSTEM_DEVELOPER_BIN_DIR = /Applications/Xcode.app/Contents/Developer/usr/bin
                        SYSTEM_DEVELOPER_DEMOS_DIR = /Applications/Xcode.app/Contents/Developer/Applications/Utilities/Built Examples
                        SYSTEM_DEVELOPER_DIR = /Applications/Xcode.app/Contents/Developer
                        SYSTEM_DEVELOPER_DOC_DIR = /Applications/Xcode.app/Contents/Developer/ADC Reference Library
                        SYSTEM_DEVELOPER_GRAPHICS_TOOLS_DIR = /Applications/Xcode.app/Contents/Developer/Applications/Graphics Tools
                        SYSTEM_DEVELOPER_JAVA_TOOLS_DIR = /Applications/Xcode.app/Contents/Developer/Applications/Java Tools
                        SYSTEM_DEVELOPER_PERFORMANCE_TOOLS_DIR = /Applications/Xcode.app/Contents/Developer/Applications/Performance Tools
                        SYSTEM_DEVELOPER_RELEASENOTES_DIR = /Applications/Xcode.app/Contents/Developer/ADC Reference Library/releasenotes
                        SYSTEM_DEVELOPER_TOOLS = /Applications/Xcode.app/Contents/Developer/Tools
                        SYSTEM_DEVELOPER_TOOLS_DOC_DIR = /Applications/Xcode.app/Contents/Developer/ADC Reference Library/documentation/DeveloperTools
                        SYSTEM_DEVELOPER_TOOLS_RELEASENOTES_DIR = /Applications/Xcode.app/Contents/Developer/ADC Reference Library/releasenotes/DeveloperTools
                        SYSTEM_DEVELOPER_USR_DIR = /Applications/Xcode.app/Contents/Developer/usr
                        SYSTEM_DEVELOPER_UTILITIES_DIR = /Applications/Xcode.app/Contents/Developer/Applications/Utilities
                        SYSTEM_DEXT_INSTALL_PATH = /System/Library/DriverExtensions
                        SYSTEM_DOCUMENTATION_DIR = /Library/Documentation
                        SYSTEM_KEXT_INSTALL_PATH = /System/Library/Extensions
                        SYSTEM_LIBRARY_DIR = /System/Library
                        TAPI_DEMANGLE = YES
                        TAPI_ENABLE_PROJECT_HEADERS = NO
                        TAPI_LANGUAGE = objective-c
                        TAPI_LANGUAGE_STANDARD = compiler-default
                        TAPI_USE_SRCROOT = YES
                        TAPI_VERIFY_MODE = Pedantic
                        TARGETED_DEVICE_FAMILY = 1,2
                        TARGETNAME = Flutter
                        TARGET_BUILD_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Release-iphonesimulator/Flutter
                        TARGET_NAME = Flutter
                        TARGET_TEMP_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build
                        TEMP_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build
                        TEMP_FILES_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build
                        TEMP_FILE_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/Pods.build/Release-iphonesimulator/Flutter.build
                        TEMP_ROOT = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios
                        TEST_FRAMEWORK_SEARCH_PATHS =  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks
                        /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator17.0.sdk/Developer/Library/Frameworks
                        TEST_LIBRARY_SEARCH_PATHS =  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/lib
                        TOOLCHAIN_DIR = /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
                        TREAT_MISSING_BASELINES_AS_TEST_FAILURES = NO
                        UID = 501
                        UNINSTALLED_PRODUCTS_DIR = /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/UninstalledProducts
                        UNSTRIPPED_PRODUCT = NO
                        USER = wjmetcalfiii
                        USER_APPS_DIR = /Users/wjmetcalfiii/Applications
                        USER_LIBRARY_DIR = /Users/wjmetcalfiii/Library
                        USE_DYNAMIC_NO_PIC = YES
                        USE_HEADERMAP = YES
                        USE_HEADER_SYMLINKS = NO
                        USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES
                        VALIDATE_PRODUCT = YES
                        VALID_ARCHS = arm64 arm64e i386 x86_64
                        VERBOSE_PBXCP = NO
                        VERSION_INFO_BUILDER = wjmetcalfiii
                        VERSION_INFO_FILE = Flutter_vers.c
                        VERSION_INFO_STRING = "@(#)PROGRAM:Flutter  PROJECT:Pods-"
                        WRAP_ASSET_PACKS_IN_SEPARATE_DIRECTORIES = NO
                        XCODE_APP_SUPPORT_DIR = /Applications/Xcode.app/Contents/Developer/Library/Xcode
                        XCODE_PRODUCT_BUILD_VERSION = 15A240d
                        XCODE_VERSION_ACTUAL = 1500
                        XCODE_VERSION_MAJOR = 1500
                        XCODE_VERSION_MINOR = 1500
                        XPCSERVICES_FOLDER_PATH = /XPCServices
                        YACC = yacc
                        arch = x86_64
                        variant = normal
[  +13 ms] executing: /usr/bin/xcode-select --print-path
[   +3 ms] Exit code 0 from: /usr/bin/xcode-select --print-path
[        ] /Applications/Xcode.app/Contents/Developer
[        ] executing: /usr/bin/arch -arm64e xcrun osascript -l JavaScript /Users/wjmetcalfiii/Downloads/flutter/packages/flutter_tools/bin/xcode_debug.js check-workspace-opened --xcode-path
/Applications/Xcode.app --project-path /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcodeproj --workspace-path
/Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcworkspace --verbose
[  +95 ms] {"status":false,"errorMessage":"Failed to get workspace.","debugResult":null}

           {"command":"check-workspace-opened","xcodePath":"/Applications/Xcode.app","projectPath":"/Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcodeproj","projectName":null,"expected
           ConfigurationBuildDir":null,"workspacePath":"/Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcworkspace","targetDestinationId":null,"targetSchemeName":null,"skipBuilding":null
           ,"launchArguments":null,"closeWindowOnStop":null,"promptToSaveBeforeClose":null,"verbose":true}
[        ] Error checking if project opened in Xcode: Failed to get workspace.
[        ] executing: open -a /Applications/Xcode.app -g -j -F /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcworkspace
[  +47 ms] executing: /usr/bin/arch -arm64e xcrun osascript -l JavaScript /Users/wjmetcalfiii/Downloads/flutter/packages/flutter_tools/bin/xcode_debug.js debug --xcode-path /Applications/Xcode.app
--project-path /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcodeproj --workspace-path /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcworkspace --project-name
Runner --expected-configuration-build-dir /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/iphoneos --device-id 00008120-000C4C3111A2201E --scheme Runner --skip-building --launch-args
["--enable-dart-profiling"] --verbose
[  +23 ms] stderr:
{"command":"debug","xcodePath":"/Applications/Xcode.app","projectPath":"/Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcodeproj","projectName":"Runner","expectedConfigurationBuildDir":"
/Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/iphoneos","workspacePath":"/Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcworkspace","targetDestinationId":"00008120-
000C4C3111A2201E","targetSchemeName":"Runner","skipBuilding":true,"launchArguments":["--enable-dart-profiling"],"closeWindowOnStop":null,"promptToSaveBeforeClose":null,"verbose":true}
[ +339 ms] stderr: Workspace: /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/ios/Runner.xcworkspace
[ +146 ms] stderr: Device: My Mac (00006020-001E515C1AD3C01E)
[  +63 ms] stderr: Device: William’s iPhone (00008120-000C4C3111A2201E)
[ +114 ms] stderr: CONFIGURATION_BUILD_DIR: /Users/wjmetcalfiii/AndroidStudioProjects/sample_testing/build/ios/iphoneos
[  +15 ms] stderr: Action result status: not yet started
[ +521 ms] {"status":true,"errorMessage":null,"debugResult":{"completed":false,"status":"running","errorMessage":null}}
[   +4 ms] Application launched on the device. Waiting for Dart VM Service url.
[   +4 ms] Checking for advertised Dart VM Services...
[+28681 ms] [ERROR:flutter/shell/platform/darwin/graphics/FlutterDarwinContextMetalImpeller.mm(42)] Using the Impeller rendering backend.
[  +48 ms] VM Service URL on device: http://127.0.0.1:53233/EpCeUBA8ZM4=/
[   +2 ms] Attempting to forward device port 53233 to host port 63481
[        ] executing: /Users/wjmetcalfiii/Downloads/flutter/bin/cache/artifacts/usbmuxd/iproxy 63481:53233 --udid 00008120-000C4C3111A2201E --debug
[ +318 ms] [ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/user_accel' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages
must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel.
[        ] See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.
[   +1 ms] [ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/accelerometer' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages
must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel.
[        ] See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.
[  +16 ms] [ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/gyroscope' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages must
be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel.
[        ] See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.
[   +3 ms] [ERROR:flutter/shell/common/shell.cc(1015)] The 'dev.fluttercommunity.plus/sensors/magnetometer' channel sent a message from native to Flutter on a non-platform thread. Platform channel messages
must be sent on the platform thread. Failure to do so may result in data loss or crashes, and must be fixed in the plugin or application code creating that channel.
[        ] See https://docs.flutter.dev/platform-integration/platform-channels#channels-and-platform-threading for more information.
[ +628 ms] Checking for available port on com.example.sampleTesting._dartVmService._tcp.local
[   +2 ms] Checking for authentication code for com.example.sampleTesting._dartVmService._tcp.local
[   +4 ms] Attempting to forward device port 53233 to host port 63482
[        ] executing: /Users/wjmetcalfiii/Downloads/flutter/bin/cache/artifacts/usbmuxd/iproxy 63482:53233 --udid 00008120-000C4C3111A2201E --debug
[  +29 ms] Forwarded port ForwardedPort HOST:63481 to DEVICE:53233
[        ] Forwarded host port 63481 to device port 53233 for VM Service
[   +1 ms] Installing and launching... (completed in 31.7s)

Flutter Doctor

wjmetcalfiii@Jims-Mac-mini ios % flutter doctor --verbose
[✓] Flutter (Channel beta, 3.16.0-0.3.pre, on macOS 14.0 23A344 darwin-arm64, locale en-US)
    • Flutter version 3.16.0-0.3.pre on channel beta at /Users/wjmetcalfiii/Downloads/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 476aa717cd (2 weeks ago), 2023-10-19 20:10:52 -0500
    • Engine revision 91cde06da0
    • Dart version 3.2.0 (build 3.2.0-210.3.beta)
    • DevTools version 2.28.1

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/wjmetcalfiii/Library/Android/sdk
    • Platform android-34, build-tools 34.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15A240d
    • CocoaPods version 1.13.0

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

[✓] Android Studio (version 2022.3)
    • 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 17.0.6+0-17.0.6b829.9-10027231)

[✓] VS Code (version 1.82.0)
    • VS Code at /Users/wjmetcalfiii/Downloads/Visual Studio Code 2.app/Contents
    • Flutter extension version 3.72.0

[✓] VS Code (version 1.81.1)
    • VS Code at /Users/wjmetcalfiii/Downloads/Visual Studio Code.app/Contents
    • Flutter extension version 3.72.0

[✓] Connected device (3 available)
    • William’s iPhone (mobile) • 00008120-000C4C3111A2201E • ios            • iOS 17.0.3 21A360
    • macOS (desktop)           • macos                     • darwin-arm64   • macOS 14.0 23A344 darwin-arm64
    • Chrome (web)              • chrome                    • web-javascript • Google Chrome 118.0.5993.117

[✓] Network resources
    • All expected network resources are available.

• No issues found!

Checklist before submitting a bug

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

[wjmetcalfiiii]

I upgraded to Flutter version 3.13.9 on channel stable and still have the same problem.

[vbuberen]

Just tried to reproduce the issue and it seems it reproduces on 3.16.0 and 3.13.x versions, while everything is Ok on 3.10.x versions. But what is interesting is that despite errors in console I see that example app works Ok and shows values from sensors anyway.

I will work on a fix for this issue and in the meantime can suggest to those struggling with this problem to use older Flutter version.

[vbuberen]

In fact I see that thanks for this line in of open PRs the issue is resolved thanks to a contributor taking care of threading requirements.

[vbuberen]

Closed via #2248

Will be released as sensors_plus 4.0.1 in the following days after documentation for the package is also updated.