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我想知道如何使用视频播放器打开 YouTube 视频并在我的 Flutter 应用程序上显示它，该播放器允许用户停止视频、向前移动、向后移动，只需在视频的底线上拖动手指即可。我正在考虑使用youtube_player_iframe，因为我在互联网上读到这是唯一允许打开 YouTube 视频（适用于 iOS，youtube_player适用于 Android）的小部件，所以我安装了它并从文档中复制粘贴示例并修复了一些错误。

如果有人可以帮助我理解为什么它不起作用，我会很高兴。

要安装，从终端运行：flutter pub add youtube_player_iframe

或者只是添加依赖：youtube_player_iframe: ^2.0.0

这是代码，只需复制粘贴即可运行：

import 'dart:developer';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:youtube_player_iframe/youtube_player_iframe.dart';
void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(YoutubeApp());
}

///
class YoutubeApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Youtube Player IFrame Demo',
      theme: ThemeData(
        primarySwatch: Colors.deepPurple,
        iconTheme: const IconThemeData(color: Colors.deepPurpleAccent),
      ),
      debugShowCheckedModeBanner: false,
      home: YoutubeAppDemo(),
    );
  }
}

///
class YoutubeAppDemo extends StatefulWidget {
  @override
  _YoutubeAppDemoState createState() => _YoutubeAppDemoState();
}

class _YoutubeAppDemoState extends State<YoutubeAppDemo> {
  late YoutubePlayerController _controller;
  String urlVideoFromYouTube = 'v0RWej7Sqg4'; //this is the last part of the YouTube url https://www.youtube.com/watch?v=v0RWej7Sqg4 copy-pasted by me

  @override
  void initState() {
    super.initState();
    _controller = YoutubePlayerController(
      initialVideoId: urlVideoFromYouTube,
      params: const YoutubePlayerParams(
        playlist: [
          'nPt8bK2gbaU',//Default playlist
          'K18cpp_-gP8',
          'iLnmTe5Q2Qw',
          '_WoCV4c6XOE',
          'KmzdUe0RSJo',
          '6jZDSSZZxjQ',
          'p2lYr3vM_1w',
          '7QUtEmBT_-w',
          '34_PXCzGw1M',
        ],
        startAt: const Duration(minutes: 1, seconds: 36),
        showControls: true,
        showFullscreenButton: true,
        desktopMode: true,
        privacyEnhanced: true,
        useHybridComposition: true,
      ),
    );
    _controller.onEnterFullscreen = () {
      SystemChrome.setPreferredOrientations([
        DeviceOrientation.landscapeLeft,
        DeviceOrientation.landscapeRight,
      ]);
      log('Entered Fullscreen');
    };
    _controller.onExitFullscreen = () {
      log('Exited Fullscreen');
    };
  }

  @override
  Widget build(BuildContext context) {
    const player = YoutubePlayerIFrame();
    return YoutubePlayerControllerProvider(
      // Passing controller to widgets below.
      controller: _controller,
      child: Scaffold(
        appBar: AppBar(
          title: const Text('Youtube Player IFrame'),
        ),
        body: LayoutBuilder(
          builder: (context, constraints) {
            if (kIsWeb && constraints.maxWidth > 800) {
              return Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Expanded(child: player),
                  const SizedBox(
                    width: 500,
                    child: SingleChildScrollView(
                      child: Controls(),
                    ),
                  ),
                ],
              );
            }
            return ListView(
              children: [
                player,
                const Controls(),
              ],
            );
          },
        ),
      ),
    );
  }

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

///
class Controls extends StatelessWidget {
  ///
  const Controls();

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // _space,
          // MetaDataSection(),
          // _space,
          // SourceInputSection(),
          // _space,
          // PlayPauseButtonBar(),
          // _space,
          // VolumeSlider(),
          // _space,
          // PlayerStateSection(),
        ],
      ),
    );
  }

  Widget get _space => const SizedBox(height: 10);
}
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1 回答 1

1

这是该存储库的链接：https://pub.dev/packages/youtube_player_iframe，完全下载它并使用 VS 代码或 android studio 运行它的 main.dart 文件，你不能只运行一个 main.dart 文件而没有另一个这个插件工作的文件。

于 2021-08-16T09:41:14.267 回答