「請幫我寫一個錄音功能。」

嗯...程式碼立刻出來了。
但是不行，因為這個功能無法在網頁上順利執行。

  final FlutterSoundRecorder _recorder = FlutterSoundRecorder();

  Future<void> startRecording(String path) async {
    await _recorder.openAudioSession();
    await _recorder.startRecorder(toFile: path);
  }

  Future<void> stopRecording() async {
    await _recorder.stopRecorder();
    await _recorder.closeAudioSession();
  }


  Future<bool> isRecording() async {
    // return await _recorder.isRecording();
    return _recorder.isRecording;
  }

「請幫我寫一個能在FlutterWeb執行的錄音功能。」

  html.MediaRecorder? _mediaRecorder;
  final _audioStreamController = StreamController<List<int>>();

  Stream<List<int>> get audioStream => _audioStreamController.stream;

  Future<void> startRecording() async {
    
    final mediaStream = await html.window.navigator.mediaDevices?.getUserMedia({'audio': true});
    _mediaRecorder = html.MediaRecorder(mediaStream!);
    _mediaRecorder!.addEventListener('dataavailable', (event) {
      final blobEvent = event as html.BlobEvent;
      final reader = html.FileReader();
      reader.readAsArrayBuffer(blobEvent.data!);
      reader.onLoadEnd.listen((event) {
        
        if (reader.readyState == html.FileReader.DONE && reader.result != null)
        {
          final data = reader.result as Uint8List;
          _audioStreamController.add(data);
        }
      });
    });
    _mediaRecorder!.start();
  }

  void stopRecording() async {
    _mediaRecorder?.stop();
    _mediaRecorder = null;
  }

哎呀呀！
應該要花點時間介紹物件導向了！