/
main.dart
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/
main.dart
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import 'dart:async';
import 'dart:convert';
import 'package:centrifuge/centrifuge.dart' as centrifuge;
import 'package:flutter/material.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
FlutterLocalNotificationsPlugin();
NotificationAppLaunchDetails notificationAppLaunchDetails;
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Centrifuge Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Centrifuge Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
centrifuge.Client _centrifuge;
centrifuge.Subscription _subscription;
ScrollController _controller;
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
final _items = <_ChatItem>[];
@override
void initState() {
super.initState();
final url = 'ws://192.168.43.70:8000/connection/websocket?format=protobuf';
_centrifuge = centrifuge.createClient(url);
_controller = ScrollController();
flutterLocalNotificationsPlugin = new FlutterLocalNotificationsPlugin();
var android = new AndroidInitializationSettings('@mipmap/ic_launcher');
var iOS = new IOSInitializationSettings();
var initSetttings = new InitializationSettings(android, iOS);
flutterLocalNotificationsPlugin.initialize(initSetttings);
}
Future onSelectNotification(String payload) {
debugPrint("payload : $payload");
showDialog(
context: context,
builder: (_) => new AlertDialog(
title: new Text('Notification'),
content: new Text('$payload'),
),
);
}
Future<void> _showNotification(String msg) async {
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'696969', 'FCPN', 'FCPN Example',
importance: Importance.Max, priority: Priority.High, ticker: 'ticker');
var iOSPlatformChannelSpecifics = IOSNotificationDetails();
var platformChannelSpecifics = NotificationDetails(
androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin.show(
0, 'plain title', msg, platformChannelSpecifics,
payload: 'item x');
}
@override
void dispose() {
_centrifuge.disconnect();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
actions: <Widget>[
PopupMenuButton<Function>(
onSelected: (f) => f(),
itemBuilder: (context) => <PopupMenuItem<Function>>[
PopupMenuItem(
value: () => _connect(),
child: Text('Connect'),
),
PopupMenuItem(
value: () => _subscribe(),
child: Text('Subscribe'),
),
],
)
],
),
body: ListView.builder(
itemCount: _items.length,
controller: _controller,
itemBuilder: (context, index) {
final item = _items[index];
return ListTile(
title: Text(item.title),
subtitle: Text(item.subtitle),
);
}),
);
}
void _connect() async {
try {
_centrifuge.connect();
} catch (exception) {
_show(exception);
}
}
void _subscribe() async {
final channel = 'global';
_subscription = _centrifuge.getSubscription(channel);
_subscription.subscribeErrorStream.listen(_show);
_subscription.subscribeSuccessStream.listen(_show);
_subscription.unsubscribeStream.listen(_show);
final onNewItem = (_ChatItem item) {
setState(() {
_items.insert(0, item);
});
};
_subscription.joinStream.listen((event) {
final user = event.user;
final client = event.client;
final item = _ChatItem(
title: 'User $user joined channel $channel',
subtitle: '(client ID $client)');
onNewItem(item);
});
_subscription.leaveStream.listen((event) {
final user = event.user;
final client = event.client;
final item = _ChatItem(
title: 'User $user left channel $channel',
subtitle: '(client ID $client)');
onNewItem(item);
});
_subscription.publishStream.listen((event) {
final String message = json.decode(utf8.decode(event.data))['input'];
_showNotification(message);
final item = _ChatItem(title: message, subtitle: 'User: user');
onNewItem(item);
});
_subscription.subscribe();
}
void _show(dynamic error) {
showDialog<AlertDialog>(
context: context,
builder: (_) => AlertDialog(
content: Text(
error.toString(),
),
),
);
}
}
class _ChatItem {
_ChatItem({this.title, this.subtitle});
final String title;
final String subtitle;
}