player.dart

import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';
import 'package:youtube_explode_dart/youtube_explode_dart.dart' as yt;

class VideoPlayerPage extends StatelessWidget {
  VideoPlayerPage({this.videoId, this.videoName});
  final String videoId;
  final String videoName;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
//      appBar: AppBar(title: Text(videoName),),
      body: FutureBuilder<yt.MediaStreamInfoSet>(
        future: yt.YoutubeExplode().getVideoMediaStream(videoId),
        builder: (context, snapshot) {
          yt.YoutubeExplode().close();
          switch (snapshot.connectionState) {
            case ConnectionState.none:
              return Center(
                child: Text("none"),
              );
              break;
            case ConnectionState.waiting:
              return Center(
                child: CircularProgressIndicator(),
              );
              break;
            case ConnectionState.active:
              return Center(
                child: Text("active"),
              );
              break;
            case ConnectionState.done:
              if (snapshot.hasData) {
                print(snapshot.data.video.first.url);
                return VideoPlayerWidget(
                    snapshot.data.audio.last.url.toString());
              } else {
                return Center(
                  child: Text(snapshot.error.toString()),
                );
              }

              break;
          }
          return Center(
            child: Text("Uh oh! Something went wrong"),
          );
        },
      ),
    );
  }
}

class VideoPlayerWidget extends StatefulWidget {
  VideoPlayerWidget(this.url);
  final String url;
  @override
  _VideoPlayerWidgetState createState() => _VideoPlayerWidgetState();
}

class _VideoPlayerWidgetState extends State<VideoPlayerWidget> {
  VideoPlayerController _controller;

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.network(widget.url)
      ..initialize().then((_) {
        setState(() {
          _controller.play();
        });
      });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: _controller.value.initialized
            ? AspectRatio(
                aspectRatio: _controller.value.aspectRatio,
                child: VideoPlayer(_controller),
              )
            : Container(),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(() {
            _controller.value.isPlaying
                ? _controller.pause()
                : _controller.play();
          });
        },
        child: Icon(
          _controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
        ),
      ),
    );
  }

  @override
  void dispose() {
    super.dispose();
    _controller.dispose();
  }
}