cast 2.0.0

Dart package to discover and connect with Chromecast devices

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:cast/cast.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Cast Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: Scaffold(
        appBar: AppBar(),
        body: MyHomePage(),
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  Future<List<CastDevice>>? _future;

  @override
  void initState() {
    super.initState();
    _startSearch();
  }

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<List<CastDevice>>(
      future: _future,
      builder: (context, snapshot) {
        if (snapshot.hasError) {
          return Center(
            child: Text(
              'Error: ${snapshot.error.toString()}',
            ),
          );
        } else if (!snapshot.hasData) {
          return Center(
            child: CircularProgressIndicator(),
          );
        }

        if (snapshot.data!.isEmpty) {
          return Column(
            children: [
              Center(
                child: Text(
                  'No Chromecast founded',
                ),
              ),
            ],
          );
        }

        return Column(
          children: snapshot.data!.map((device) {
            return ListTile(
              title: Text(device.name),
              onTap: () {
                // _connectToYourApp(context, device);
                _connectAndPlayMedia(context, device);
              },
            );
          }).toList(),
        );
      },
    );
  }

  void _startSearch() {
    _future = CastDiscoveryService().search();
  }

  Future<void> _connectToYourApp(BuildContext context, CastDevice object) async {
    final session = await CastSessionManager().startSession(object);

    session.stateStream.listen((state) {
      if (state == CastSessionState.connected) {
        final snackBar = SnackBar(content: Text('Connected'));
        ScaffoldMessenger.of(context).showSnackBar(snackBar);

        _sendMessageToYourApp(session);
      }
    });

    session.messageStream.listen((message) {
      print('receive message: $message');
    });

    session.sendMessage(CastSession.kNamespaceReceiver, {
      'type': 'LAUNCH',
      'appId': 'Youtube', // set the appId of your app here
    });
  }

  void _sendMessageToYourApp(CastSession session) {
    print('_sendMessageToYourApp');

    session.sendMessage('urn:x-cast:namespace-of-the-app', {
      'type': 'sample',
    });
  }

  Future<void> _connectAndPlayMedia(BuildContext context, CastDevice object) async {
    final session = await CastSessionManager().startSession(object);

    session.stateStream.listen((state) {
      if (state == CastSessionState.connected) {
        final snackBar = SnackBar(content: Text('Connected'));
        ScaffoldMessenger.of(context).showSnackBar(snackBar);
      }
    });

    var index = 0;

    session.messageStream.listen((message) {
      index += 1;

      print('receive message: $message');

      if (index == 2) {
        Future.delayed(Duration(seconds: 5)).then((x) {
          _sendMessagePlayVideo(session);
        });
      }
    });

    session.sendMessage(CastSession.kNamespaceReceiver, {
      'type': 'LAUNCH',
      'appId': 'CC1AD845', // set the appId of your app here
    });
  }

  void _sendMessagePlayVideo(CastSession session) {
    print('_sendMessagePlayVideo');

    var message = {
      // Here you can plug an URL to any mp4, webm, mp3 or jpg file with the proper contentType.
      'contentId': 'http://commondatastorage.googleapis.com/gtv-videos-bucket/big_buck_bunny_1080p.mp4',
      'contentType': 'video/mp4',
      'streamType': 'BUFFERED', // or LIVE

      // Title and cover displayed while buffering
      'metadata': {
        'type': 0,
        'metadataType': 0,
        'title': "Big Buck Bunny",
        'images': [
          {'url': 'http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/images/BigBuckBunny.jpg'}
        ]
      }
    };

    session.sendMessage(CastSession.kNamespaceMedia, {
      'type': 'LOAD',
      'autoPlay': true,
      'currentTime': 0,
      'media': message,
    });
  }
}