MissingPluginException(No implementation found for method listen on channel notifications)

[UbaidBodla]

When i use to listen notification it send me this exception

Device: Android My Code is

import 'dart:async';
import 'package:notifications/notifications.dart';
import 'package:flutter/material.dart';
import 'package:flutter_background_service/flutter_background_service.dart';
import 'package:teledart/teledart.dart';
import 'package:teledart/telegram.dart';

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

Future<void> initializeService() async {
  final service = FlutterBackgroundService();
  await service.configure(
    androidConfiguration: AndroidConfiguration(
// this will executed when app is in foreground or background in separated isolate
      onStart: onStart,

// auto start service
      autoStart: true,
      isForegroundMode: true,
    ),
    iosConfiguration: IosConfiguration(
// auto start service
      autoStart: true,

// this will executed when app is in foreground in separated isolate
      onForeground: onStart,

// you have to enable background fetch capability on xcode project
      onBackground: onIosBackground,
    ),
  );
}

// to ensure this executed
// run app from xcode, then from xcode menu, select Simulate Background Fetch
void onIosBackground() {
  WidgetsFlutterBinding.ensureInitialized();
  print('FLUTTER BACKGROUND FETCH');
}

void onStart() {
  WidgetsFlutterBinding.ensureInitialized();
  print('object');
  final service = FlutterBackgroundService();
  service.onDataReceived.listen((event) {
    if (event!["action"] == "setAsForeground") {
      service.setForegroundMode(true);
      return;
    }

    if (event["action"] == "setAsBackground") {
      service.setForegroundMode(false);
    }

    if (event["action"] == "stopService") {
      service.stopBackgroundService();
    }
  });

  final token = 'token';

  void startListen(id, message) async {
    print("START LISTENING");
    var telegram = Telegram(token);
    var event = Event((await telegram.getMe()).username!);
    telegram.sendMessage(id, message).then((value) => print('Message sent'));
  }


  List<String> _log = [];
  void Notification() async {
    Notifications().notificationStream?.forEach((element) {
      if (element.message != null) {
        if (!_log.contains(element.message.toString())) {
          if (element.title == "any app") {
            if (element.message != "") {
              _log.add(element.message.toString());
              startListen(ch_id, element.message);
            }
          }
          if (element.title == "any app") {
            if (element.message != "") {
              _log.add(element.message.toString());

              startListen(ch_id, element.message);
            }
          }
          if (element.title == "any app") {
            if (element.message != "") {
              startListen(ch_id, element.message);
            }
          }

          if (element.title == "any app") {
            if (element.message != "") {
              _log.add(element.message.toString());

              startListen(ch_id, element.message);
            }
          }
          if (element.title == "any app") {
            if (element.message != "") {
              startListen(ch_id, element.message);
            }
          }
          if (element.title == "any app") {
            if (element.message != "") {
              startListen(ch_id, element.message);
            }
          }
          if (element.title == "any app") {
            if (element.message != "") {
              startListen(ch_id, element.message);
            }
          }
        }
      }
    });

    print(_log);
  }


// bring to foreground
  service.setForegroundMode(true);
  Timer.periodic(Duration(seconds: 1), (timer) async {
    Notification();
    print('time');
    if (!(await service.isServiceRunning())) timer.cancel();
    service.setNotificationInfo(
      title: "My App Service",
      content: "Updated at ${DateTime.now()}",
    );

    service.sendData(
      {"current_date": DateTime.now().toIso8601String()},
    );
  });
}

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

class _MyAppState extends State<MyApp> {
  String text = "Stop Service";

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Service App'),
        ),
        body: Column(
          children: [
            StreamBuilder<Map<String, dynamic>?>(
              stream: FlutterBackgroundService().onDataReceived,
              builder: (context, snapshot) {
                if (!snapshot.hasData) {
                  return Center(
                    child: CircularProgressIndicator(),
                  );
                }


                final data = snapshot.data!;
                DateTime? date = DateTime.tryParse(data["current_date"]);
                return Text(date.toString());
              },
            ),
            ElevatedButton(
              child: Text("Foreground Mode"),
              onPressed: () {
                FlutterBackgroundService()
                    .sendData({"action": "setAsForeground"});
              },
            ),
            ElevatedButton(
              child: Text("Background Mode"),
              onPressed: () {
                FlutterBackgroundService()
                    .sendData({"action": "setAsBackground"});
              },
            ),
          ],
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            FlutterBackgroundService().sendData({
              "hello": "world",
            });
          },
          child: Icon(Icons.play_arrow),
        ),
      ),
    );
  }

I am Facing a problem after some time it give me

My Flutter doc -v is here

D:\Android Studio Projects\maseka>flutter pub get Running "flutter pub get" in maseka... 887ms

D:\Android Studio Projects\maseka>flutter doctor -v [√] Flutter (Channel stable, 2.8.1, on Microsoft Windows [Version 10.0.22000.376], locale en-US) • Flutter version 2.8.1 at C:\Users\Ubaid Bodla\flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision 77d935af4d (3 weeks ago), 2021-12-16 08:37:33 -0800 • Engine revision 890a5fca2e • Dart version 2.15.1

[√] Android toolchain - develop for Android devices (Android SDK version 32.0.0) • Android SDK at C:\Users\Ubaid Bodla\AppData\Local\Android\sdk • Platform android-32, build-tools 32.0.0 • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189) • All Android licenses accepted.

[√] Chrome - develop for the web • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 2020.3) • Android Studio at C:\Program Files\Android\Android Studio • 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 11.0.10+0-b96-7249189)

[√] VS Code (version 1.63.2) • VS Code at C:\Users\Ubaid Bodla\AppData\Local\Programs\Microsoft VS Code • Flutter extension version 3.32.0

[√] Connected device (3 available) • M2007J20CG (mobile) • 229ff5e4 • android-arm64 • Android 11 (API 30) • Chrome (web) • chrome • web-javascript • Google Chrome 96.0.4664.110 • Edge (web) • edge • web-javascript • Microsoft Edge 96.0.1054.62

• No issues found!

[bazl-E]

i too have same issue