twilio_video_tutorial.dart

import 'dart:async';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

typedef void VideoCreatedCallback(VideoController controller);

class TwilioVideoTutorial extends StatefulWidget {
  TwilioVideoTutorial({
    Key key,
    this.twilioToken,
    this.onVideoCreated,
  }) : super(key: key);
  final String twilioToken;
  final VideoCreatedCallback onVideoCreated;

  @override
  _TwilioVideoTutorialState createState() => _TwilioVideoTutorialState();
}

class _TwilioVideoTutorialState extends State<TwilioVideoTutorial> {
  VideoController _controller;

  @override
  void initState() {
    super.initState();
    _controller = VideoController();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        height: double.infinity,
        width: double.infinity,
        child: AndroidView(
          viewType: 'twilioVideoPlugin',
          onPlatformViewCreated: _onPlatformCreated,
        ),
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
      floatingActionButton: FloatingActionButton(
        heroTag: null,
        backgroundColor: Colors.red.shade700,
        child: Icon(Icons.call_end, size: 32),
        onPressed: () async {
          try {
            await _controller.hangup();
            Navigator.pop(context);
          } catch (error) {
            print("Error hanging up: ${error.message}");
          }
        },
      ),
    );
  }

  void _onPlatformCreated(int id) {
    if (_onVideoCreated == null) {
      return;
    }
    _onVideoCreated();
  }

  void _onVideoCreated() {
    _controller.init(widget.twilioToken);
  }
}

class VideoController {
  MethodChannel _methodChannel = new MethodChannel("twilioVideoPlugin");

  Future<void> init(String token) {
    assert(token != null);
    return _methodChannel.invokeMethod('init', {'token': "tokentoken"});
  }

  Future<bool> hangup() {
    return _methodChannel.invokeMethod('hangup');
  }
}