Noise_meter package flutter

Question

I have problem with the noise_meter package. I added all of the permissions for the android and iOs devices as in the pub.dev but the example app is not working at all.

I added print in to the onData function but it seems that app is unable to listen to stream. Any ideas?

import 'package:noise_meter/noise_meter.dart';
import 'package:flutter/material.dart';
import 'dart:async';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  MyAppState createState() => MyAppState();
}

class MyAppState extends State<MyApp> {
  bool _isRecording = false;
  StreamSubscription<NoiseReading>? _noiseSubscription;
  late NoiseMeter _noiseMeter;

  @override
  void initState() {
    super.initState();
    _noiseMeter = NoiseMeter(onError);
  }

  void onData(NoiseReading noiseReading) {
    print('ondata');
    setState(() {
      if (!_isRecording) {
        _isRecording = true;
      }
    });
    print(noiseReading.toString());
  }

  void onError(Object error) {
    print(error.toString());
    _isRecording = false;
  }

  void start() async {
    try {
      _noiseSubscription = _noiseMeter.noiseStream.listen(onData);
      print('stream');
    } catch (err) {
      print(err);
    }
  }

  void stop() async {
    print("stop");
    try {
      if (_noiseSubscription != null) {
        _noiseSubscription!.cancel();
        _noiseSubscription = null;
      }
      setState(() {
        _isRecording = false;
      });
    } catch (err) {
      print('stopRecorder error: $err');
    }
  }

  List<Widget> getContent() => <Widget>[
        Container(
            margin: EdgeInsets.all(25),
            child: Column(children: [
              Container(
                margin: EdgeInsets.only(top: 20),
                child: Text(_isRecording ? "Mic: ON" : "Mic: OFF",
                    style: TextStyle(fontSize: 25, color: Colors.blue)),
              )
            ])),
      ];

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
            child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: getContent())),
        floatingActionButton: FloatingActionButton(
            backgroundColor: _isRecording ? Colors.red : Colors.green,
            onPressed: _isRecording ? stop : start,
            child: _isRecording ? Icon(Icons.stop) : Icon(Icons.mic)),
      ),
    );
  }
}

I checked all of the permissions, but i dont have any more ideas.