Flutter获取YouTube视频信息插件 youtube_video_info 的使用

youtube_video_info 是一个轻量级的Flutter插件，用于从YouTube URL中提取视频信息。本文将详细介绍如何安装和使用这个插件，并提供完整的示例代码。

插件简介

pub.dev/youtube_video_info

这是一个轻量级的包，用于从YouTube URL中获取视频信息。

安装步骤

在 pubspec.yaml 文件中添加以下依赖：

dependencies:
  flutter:
    sdk: flutter
  youtube_video_info: ^1.0.2

然后运行 flutter pub get 来安装依赖。

导入库：

import 'package:youtube_video_info/youtube.dart';

调用方法

使用 YoutubeData.getData(link) 方法来获取视频数据：

YoutubeDataModel videoData = await YoutubeData.getData(link);

示例代码

以下是一个完整的示例，展示如何在Flutter应用中使用 youtube_video_info 插件来获取并显示YouTube视频的信息。

lib/main.dart

import 'package:flutter/material.dart';
import 'package:youtube_video_info/youtube.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'youtube_video_info Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'youtube_video_info Example'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  [@override](/user/override)
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  static const String hintText = "Youtube URL...";
  static YoutubeDataModel? videoData;

  void _fetchMetadata(String link) async {
    try {
      videoData = await YoutubeData.getData(link);
      setState(() {});
    } catch (e) {
      print('Error fetching metadata: $e');
    }
  }

  Widget _boldText(String boldText, String normalText) {
    return RichText(
      text: TextSpan(
        style: TextStyle(fontSize: 14.0, color: Colors.black),
        children: [
          TextSpan(
              text: boldText,
              style: TextStyle(fontWeight: FontWeight.bold)),
          TextSpan(text: normalText),
        ],
      ),
    );
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(15.0),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: <Widget>[
            TextField(
              onSubmitted: (e) => _fetchMetadata(e),
              decoration: InputDecoration(hintText: hintText),
            ),
            SizedBox(height: 50),
            videoData == null
                ? Container()
                : Container(
                    child: Column(
                      children: [
                        Image.network(videoData!.thumbnailUrl ?? ''),
                        Divider(),
                        _boldText('videoId: ', videoData!.videoId),
                        Divider(),
                        _boldText('Title: ', videoData!.title),
                        Divider(),
                        _boldText('Channel Name: ', videoData!.authorName),
                        Divider(),
                        _boldText('Channel URL: ', videoData!.authorUrl),
                        Divider(),
                        _boldText('Duration: ',
                            '${videoData!.durationSeconds} seconds'),
                        Divider(),
                        Text('Keywords: ${videoData!.keywords}'),
                        Divider(),
                        _boldText('Average Rating: ',
                            videoData!.averageRating.toString()),
                        Divider(),
                        _boldText('View Count: ',
                            '${videoData!.viewCount} views'),
                        Divider(),
                        _boldText('Full Description: \r\n\r\n',
                            videoData!.fullDescription),
                        Divider(),
                      ],
                    ),
                  ),
          ],
        ),
      ),
    );
  }
}