nb_navigation_flutter 2.6.0

A Flutter plugin for Nextbillion.ai Navigation SDK, providing turn-by-turn navigation.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:nb_navigation_flutter_example/custom_navigation_style.dart';
import 'package:nb_navigation_flutter_example/draw_route_line.dart';
import 'package:nb_navigation_flutter_example/launch_embedded_navigation_view.dart';
import 'package:nb_navigation_flutter_example/launch_navigation.dart';
import 'package:nb_navigation_flutter_example/map_view_style.dart';
import 'package:nb_navigation_flutter_example/navigation_theme_mode.dart';
import 'package:nb_navigation_flutter_example/route_line_style.dart';
import 'package:nb_navigation_flutter_example/track_current_location.dart';
import 'package:nb_navigation_flutter/nb_navigation_flutter.dart';
import 'package:permission_handler/permission_handler.dart';

import 'custom_view_on_navigation_view.dart';
import 'draw_route_line_with_raw_json.dart';
import 'embedded_navigation_view_integration.dart';
import 'full_navigation_example.dart';
import 'launch_preview_screen.dart';

final Map<String, Widget> _allPages = <String, Widget>{
  FullNavigationExample.title: const FullNavigationExample(),
  LaunchEmbeddedNavigationView.title: const LaunchEmbeddedNavigationView(),
  CustomViewOnNavigationView.title: const CustomViewOnNavigationView(),
  LaunchNavigation.title: const LaunchNavigation(),
  DrawRouteLine.title: const DrawRouteLine(),
  DrawRouteLineWithRawJson.title: const DrawRouteLineWithRawJson(),
  TrackCurrentLocation.title: const TrackCurrentLocation(),
  RouteLineStyle.title: const RouteLineStyle(),
  CustomNavigationStyle.title: const CustomNavigationStyle(),
  MapViewStyle.title: const MapViewStyle(),
  NavigationTheme.title: const NavigationTheme(),
  EmbeddedNavigationViewIntegration.title:
      const EmbeddedNavigationViewIntegration(),
  LaunchPreviewScreen.title: const LaunchPreviewScreen(),
};

class NavigationDemo extends StatefulWidget {
  static const String accessKey = String.fromEnvironment("ACCESS_KEY");

  const NavigationDemo({super.key});

  @override
  State<NavigationDemo> createState() => _NavigationDemoState();
}

class _NavigationDemoState extends State<NavigationDemo> {
  @override
  void initState() {
    super.initState();
    NBNavigation.initNextBillion(NavigationDemo.accessKey);

    // Set user ID If needed
    NBNavigation.setUserId("123344").then((value) {});

    // Check user ID If needed
    NBNavigation.getUserId().then((value) {});

    // Get NB ID If needed
    NBNavigation.getNBId().then((value) {});

    requestPermission();
  }

  Future requestPermission() async {
    var status = await Permission.location.status;

    if (!mounted) {
      return;
    }

    if (status.isDenied) {
      await [Permission.location].request();

      if (!mounted) {
        return;
      }
    } else {
      var alwaysLocation = await Permission.locationAlways.status;
      if (alwaysLocation.isDenied) {
        await [Permission.locationAlways].request();
      }
    }

    if (!mounted) {
      return;
    }

    var notificationStatus = await Permission.notification.status;
    if (notificationStatus.isDenied) {
      await [Permission.notification].request();
    }
  }

  void _pushPage(
      BuildContext context, Widget page, bool isRequiredPermission) async {
    if (!mounted) {
      return;
    }

    if (isRequiredPermission) {
      var status = await Permission.location.status;

      if (!mounted) {
        return;
      }

      if (status.isDenied) {
        await [Permission.location].request();

        if (!mounted) {
          return;
        }
      }
    }

    WidgetsBinding.instance.addPostFrameCallback((_) {
      Navigator.push(
        context,
        MaterialPageRoute(
          builder: (context) => Builder(
            builder: (newContext) => page,
          ),
        ),
      );
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('NBNavigation examples')),
      body: NavigationDemo.accessKey.isEmpty
          ? buildAccessTokenWarning()
          : ListView.separated(
              itemCount: _allPages.length,
              separatorBuilder: (BuildContext context, int index) =>
                  const Divider(height: 1),
              itemBuilder: (_, int index) => ListTile(
                  title: Text(_allPages.keys.toList()[index]),
                  onTap: () {
                    _pushPage(context, _allPages.values.toList()[index], true);
                  }),
            ),
    );
  }

  Widget buildAccessTokenWarning() {
    return Container(
      color: Colors.red[900],
      child: SizedBox.expand(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            "Using MapView requires calling Nextbillion.initNextbillion(String accessKey) "
                "before inflating or creating NBMap Widget. ",
          ]
              .map((text) => Padding(
                    padding: const EdgeInsets.all(8),
                    child: Text(text,
                        textAlign: TextAlign.center,
                        style: const TextStyle(
                            fontSize: 14,
                            fontWeight: FontWeight.bold,
                            color: Colors.white)),
                  ))
              .toList(),
        ),
      ),
    );
  }
}

void main() {
  runApp(const MaterialApp(home: NavigationDemo()));
}