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@paulallies
Created April 30, 2020 18:49
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Flutter Websockets
import 'package:flutter/material.dart';
import 'package:web_socket_channel/io.dart';
import 'package:web_socket_channel/web_socket_channel.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
final title = 'WebSocket Demo';
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(
title: title,
channel: IOWebSocketChannel.connect(
"wss://flexoapi.nanosoft.co.za/wss",
)),
);
}
}
class MyHomePage extends StatefulWidget {
final String title;
final WebSocketChannel channel;
MyHomePage({
Key key,
@required this.title,
@required this.channel,
}) : super(key: key);
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
TextEditingController _controller = TextEditingController();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Form(
child: TextFormField(
controller: _controller,
decoration: InputDecoration(labelText: 'Send a message'),
),
),
StreamBuilder(
stream: widget.channel.stream,
builder: (context, snapshot) {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 24.0),
child: Text(snapshot.hasData ? '${snapshot.data}' : ''),
);
},
)
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _sendMessage,
tooltip: 'Send message',
child: Icon(Icons.send),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
void _sendMessage() {
if (_controller.text.isNotEmpty) {
widget.channel.sink.add(_controller.text);
}
}
@override
void dispose() {
widget.channel.sink.close();
super.dispose();
}
}
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