navigation_with_mapbox 0.0.4

Add Turn By Turn Navigation to Your Flutter Application Using MapBox.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:io' as io;
import 'dart:async';
// we import our plugin
import 'package:navigation_with_mapbox/navigation_with_mapbox.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  // instantiate our plugin class
  final _navigationWithMapboxPlugin = NavigationWithMapbox();
  // Variable for Navigation Map Options IOS
  MapboxOptions? _options;
  // Variables Stream to listen for events IOS
  late Stream<int> listenEvents;
  late StreamSubscription _statusViewSubscription;
  // Control variable for map widget IOS
  bool _controlView = false;

  @override
  void initState() {
    super.initState();
    initPlatformState();
    // we instantiate the stream getStateMapboxView IOS
    listenEvents = MapboxNavigationView.getStateMapboxView;
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: Column(
            children: [
              Flexible(
                child: Stack(
                  children: [
                    Center(
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          ElevatedButton(
                            onPressed: io.Platform.isAndroid
                                ? () async {
                                    // in an asynchronous function we call the method that starts the map
                                    await _navigationWithMapboxPlugin.startNavigation(
                                        // origin refers to the user's starting point at the time of starting the navigation
                                        origin: WayPoint(latitude: 4.809432, longitude: -75.700660),
                                        // destination refers to the end point or goal for the user at the time of starting the navigation
                                        destination: WayPoint(latitude: 4.759335, longitude: -75.923914),
                                        // if we enable this option we can choose a destination with a sustained tap
                                        setDestinationWithLongTap: false,
                                        // if we enable this option we will activate the simulation of the route
                                        simulateRoute: false,
                                        // optional, message that will be displayed when starting the navigation map
                                        msg: '¡Buen viaje, disfruta de tu recorrido!',
                                        // unit of measure in which the navigation assistant will speak to us
                                        // optional, default: metric
                                        voiceUnits: 'imperial',
                                        // language in which the navigation assistant will speak to us
                                        // optional, default: en
                                        language: 'es',
                                        // if we enable this option we can see alternative routes when starting the navigation map
                                        // optional, default: false
                                        alternativeRoute: true,
                                        // the style or theme with which the navigation map will be loaded
                                        // optional, default: streets, others: dark, light, traffic_day, traffic_night, satellite, satellite_streets, outdoors
                                        style: 'traffic_night',
                                        // refers to the navigation mode, the route and time will be calculated depending on this
                                        // optional, default: driving, others: walking, cycling
                                        profile: '');
                                  }
                                : null,
                            child: const Text('Start Navigation Android'),
                          ),
                          ElevatedButton(
                            onPressed: io.Platform.isIOS
                                ? () {
                                    // we set the map options
                                    var options = MapboxOptions(
                                      // origin refers to the user's starting point at the time of starting the navigation
                                      origin: WayPoint(
                                          latitude: 4.809432,
                                          longitude: -75.700660),
                                      // destination refers to the end point or goal for the user at the time of starting the navigation
                                      destination: WayPoint(
                                          latitude: 4.759335,
                                          longitude: -75.923914),
                                      // if we enable this option we can choose a destination with a sustained tap
                                      setDestinationWithLongTap: true,
                                      // if we enable this option we will activate the simulation of the route
                                      simulateRoute: false,
                                      // optional, default: en
                                      language: 'es',
                                      // optional, default: drivingWithTraffic, others: driving, walking, cycling
                                      profile: 'drivingWithTraffic',
                                      // optional, default: streets, others: dark, light
                                      style: 'dark',
                                      // optional, default: metric
                                      voiceUnits: 'imperial',
                                    );
                                    // we save the options and go on to show the map view
                                    setState(() {
                                      _options = options;
                                      _controlView = true;
                                    });
                                    // we start listening to the state of the map view
                                    _statusViewSubscription =
                                        listenEvents.listen(_statusView);
                                  }
                                : null,
                            child: const Text('Start Navigation Ios'),
                          ),
                        ],
                      ),
                    ),
                    // When the condition is met we show the navigation map with mapbox
                    if (_controlView)
                      MapboxNavigationView(mapboxOptions: _options!),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  // function that listens to the state of the map
  _statusView(event) {
    // when we close the map we go to hide the view of the map and stop listening to its state
    if (event == 2) {
      // we hide the map view
      setState(() {
        _controlView = false;
      });
      // we stopped listening to the state of the map
      _statusViewSubscription.cancel();
    }
  }
}