ricardoogliari

import ...
import 'package:flutter_mqtt/thermometer_widget.dart';

...

class _MyHomePageState extends State<MyHomePage> {
 ...

 @override
 Widget build(BuildContext context) {

ricardoogliari

void _onMessage(List<mqtt.MqttReceivedMessage> event) {
 final mqtt.MqttPublishMessage recMess =
 event[0].payload as mqtt.MqttPublishMessage;
 final String message =
 mqtt.MqttPublishPayload.bytesToStringAsString(recMess.payload.message);

 setState(() {
   _temp = double.parse(message);
 });
}

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void _subscribeToTopic(String topic) {
 if (connectionState == mqtt.MqttConnectionState.connected) {
     client.subscribe(topic, mqtt.MqttQos.exactlyOnce);
 }
}

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void _connect() async {
 client = mqtt.MqttClient(broker, '');
 client.port = port;
 client.logging(on: true);
 client.keepAlivePeriod = 30;
 client.onDisconnected = _onDisconnected;

 final mqtt.MqttConnectMessage connMess = mqtt.MqttConnectMessage()
     .withClientIdentifier(clientIdentifier)
     .startClean() // Non persistent session for testing

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String broker           = abc.cloudmqtt.com';
int port                = 13372;
String username         = 'seu_username';
String passwd           = 'seu_password';
String clientIdentifier = 'android';

double _temp = 20;

mqtt.MqttClient client;
mqtt.MqttConnectionState connectionState;

ricardoogliari

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:mqtt_client/mqtt_client.dart' as mqtt;

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
 @override
 Widget build(BuildContext context) {
   return MaterialApp(

ricardoogliari

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  mqtt_client: ^5.5.3

ricardoogliari

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  mqtt_client: ^5.5.3

ricardoogliari

import 'package:flutter/services.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'HomeScreenPage.dart';
import 'package:location/location.dart' as LocationMgr;

class HomeScreenState extends State<HomeScreenPage> {
  static const platformChannelGeolocator = const MethodChannel('geolocator');

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class MainActivity: FlutterActivity() {

  private val CHANNEL_GEOLOCATOR = "geolocator"

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    GeneratedPluginRegistrant.registerWith(this)

    MethodChannel(flutterView, CHANNEL_GEOLOCATOR).setMethodCallHandler(
            object : MethodCallHandler {