flutter_twilio_voice 0.0.4

Provides an interface to Twilio's Programmable Voice SDK to allow adding voice-over-IP (VoIP) calling into your Flutter applications.

example/lib/main.dart

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

import 'package:flutter/services.dart';
import 'package:flutter_twilio_voice/flutter_twilio_voice.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _eventMessage;

  TextEditingController _toController, _fromController;

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

    initPlatformState();
    _toController = TextEditingController();
    _fromController = TextEditingController(text: "alice");
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      platformVersion = await FlutterTwilioVoice.platformVersion;
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // 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;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  void _onEvent(Object event) {
    setState(() {
      _eventMessage =
          "Battery status: ${event == 'charging' ? '' : 'dis'}charging.";
    });
  }

  void _onError(Object error) {
    setState(() {
      _eventMessage = 'Battery status: unknown.';
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Twilio Voice Example'),
        ),
        body: SafeArea(
            child: Center(
          child: Padding(
            padding: EdgeInsets.all(20),
            child: Column(
              children: <Widget>[
                Padding(
                  padding: EdgeInsets.all(10),
                  child: Text('Running on: $_platformVersion\n'),
                ),
                TextFormField(
                  controller: _fromController,
                  decoration: InputDecoration(
                      labelText: 'Sender Identifier or Phone Number'),
                ),
                Divider(),
                TextFormField(
                  controller: _toController,
                  decoration: InputDecoration(
                      labelText: 'Receiver Identifier or Phone Number'),
                ),
                SizedBox(
                  height: 10,
                ),
                RaisedButton(
                  child: Text("Make Call"),
                  onPressed: () async {
                    FlutterTwilioVoice.phoneCallEventSubscription
                        .listen(_onEvent, onError: _onError);
                    FlutterTwilioVoice.receiveCalls(_fromController.text);
                    FlutterTwilioVoice.makeCall(
                        from: _fromController.text,
                        to: _toController.text,
                        accessTokenUrl: "https://{SERVER_URL}/accesstoken",
                        toDisplayName: "James Bond");
                  },
                )
              ],
            ),
          ),
        )),
      ),
    );
  }
}