MQTT Project-Software.py.py

import 'package:flutter/material.dart';
import 'package:flutter_mqtt/mqtt_client.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MQTTScreen(),
    );
  }
}

class MQTTScreen extends StatefulWidget {
  @override
  _MQTTScreenState createState() => _MQTTScreenState();
}

class _MQTTScreenState extends State<MQTTScreen> {
  MQTTClient mqttClient = MQTTClient();

  @override
  void initState() {
    super.initState();
    mqttClient.prepareClient();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('MQTT Mobile App'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            mqttClient.publishMessage('Topic', 'Message');
          },
          child: Text('Publish Message'),
        ),
      ),
    );
  }
}