App Windows crashes when doing build "flutter build windows"

[tonyhoang2712]

Package version
record: ^5.2.0

Environment

• OS: [Windows]

Describe the bug

[ERROR:flutter/shell/common/shell.cc(1065)] The 'com.llfbandit.record/eventsRecord/44bafddf-6f0a-445d-a813-b94d10e70258' 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.

To Reproduce

I implemented audio streaming using the record package: ^5.2.0.

Step 1: run "flutter pub add record"
Step 2: When I run "flutter run -d windows" it seems to work fine.
Step 3: When I run "flutter build windows", the app crashes.
When I revisited Step 2, I noticed the following error:

[ERROR:flutter/shell/common/shell.cc(1065)] The 'com.llfbandit.record/eventsRecord/44bafddf-6f0a-445d-a813-b94d10e70258' 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.

I found that this is the cause of the crash when running 'flutter build windows'.
Do you know how I can fix this issue?

Here is the source code I used.

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

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: AudioRecorderExample(),
    );
  }
}

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


  @override
  _AudioRecorderExampleState createState() => _AudioRecorderExampleState();
}

class _AudioRecorderExampleState extends State<AudioRecorderExample> {
  final AudioRecorder _record = AudioRecorder();
  bool _isRecording = false;
  String? _recordedFilePath;

  Future<void> startRecording() async {
    if (await _record.hasPermission()) {
      debugPrint('Permission access');
    } else {
      debugPrint('Permission denied');
    }
    await _record.start(
        RecordConfig(
            encoder: AudioEncoder.pcm16bits, numChannels: 1, sampleRate: 8000),
        path: 'C:/Zensho/ACCSWatcherV2/myFile.m4a');
    setState(() {
      _isRecording = true;
    });

    debugPrint('Recording started');
    try {
      final stream = await _record.startStream(RecordConfig(
          encoder: AudioEncoder.pcm16bits, numChannels: 1, sampleRate: 8000));

      stream.listen((data) {
        debugPrint('Stream data length: ${data.length}');
      });

      debugPrint('Streaming started');
    } catch (e) {
      debugPrint('Streaming error $e');
    }
  }

  Future<void> stopRecording() async {
    if (_isRecording) {
      final path = await _record.stop();
      setState(() {
        _isRecording = false;
        _recordedFilePath = path;
      });
      debugPrint('Recording stopped. File saved at: $path');
    }
  }

  Future<void> startStreaming() async {}

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Audio Recorder Example')),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: _isRecording ? stopRecording : startRecording,
              child: Text(_isRecording ? 'Stop Recording' : 'Start Recording'),
            ),
            const SizedBox(height: 16),
            if (_recordedFilePath != null) ...[
              const SizedBox(height: 16),
              Text('Recorded File: $_recordedFilePath'),
            ],
          ],
        ),
      ),
    );
  }
}

Thank you.

[llfbandit]

Thanks for reporting.
Duplicates #379