Flutter音乐播放管理插件music_kit的使用

music_kit 是一个用于访问和播放Apple Music的Flutter插件。它支持Android和iOS平台。

平台支持

使用方法

要在项目中使用这个插件，请在 pubspec.yaml 文件中添加 music_kit 作为依赖项。

额外步骤（针对Android）

1. 在构建文件中添加JitPack仓库：

   repositories {
       ...
       maven { url 'https://jitpack.io' }
   }
   

2. 在使用MusicKit实例之前，手动调用 initialize(developerToken, musicUserToken: [userToken]) 方法。

示例代码

下面是一个完整的示例Demo，展示了如何初始化并使用 music_kit 插件来播放音乐：

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

import 'package:music_kit/music_kit.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final _musicKitPlugin = MusicKit();
  MusicAuthorizationStatus _status = MusicAuthorizationStatusNotDetermined();
  String? _developerToken = '';
  String _userToken = '';
  String _countryCode = '';

  MusicSubscription _musicSubsciption = const MusicSubscription();
  late StreamSubscription<MusicSubscription> _musicSubscriptionStreamSubscription;

  MusicPlayerState? _playerState;
  late StreamSubscription<MusicPlayerState> _playerStateStreamSubscription;

  MusicPlayerQueue? _playerQueue;
  late StreamSubscription<MusicPlayerQueue> _playerQueueStreamSubscription;

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();

    _musicSubscriptionStreamSubscription =
        _musicKitPlugin.onSubscriptionUpdated.listen((event) {
      setState(() {
        _musicSubsciption = event;
      });
    });

    _playerStateStreamSubscription =
        _musicKitPlugin.onMusicPlayerStateChanged.listen((event) {
      setState(() {
        _playerState = event;
      });
    });

    _playerQueueStreamSubscription =
        _musicKitPlugin.onPlayerQueueChanged.listen((event) {
      setState(() {
        _playerQueue = event;
      });
    });
  }

  [@override](/user/override)
  void dispose() {
    _musicSubscriptionStreamSubscription.cancel();
    _playerStateStreamSubscription.cancel();
    _playerQueueStreamSubscription.cancel();
    super.dispose();
  }

  Future<void> initPlatformState() async {
    final status = await _musicKitPlugin.authorizationStatus;

    switch (status) {
      case MusicAuthorizationStatusInitial():
      case MusicAuthorizationStatusDenied():
      case MusicAuthorizationStatusNotDetermined():
      case MusicAuthorizationStatusRestricted():
        return;
      case MusicAuthorizationStatusAuthorized():
        break;
    }

    final developerToken = await _musicKitPlugin.requestDeveloperToken();

    if (_musicSubsciption.canBecomeSubscriber == true) return;

    final userToken = await _musicKitPlugin.requestUserToken(developerToken);

    final countryCode = await _musicKitPlugin.currentCountryCode;

    if (!mounted) return;

    setState(() {
      _status = status;
      _developerToken = developerToken;
      _userToken = userToken;
      _countryCode = countryCode;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Column(
            children: [
              Text('DeveloperToken: $_developerToken\n', maxLines: 3),
              Text('UserToken: $_userToken\n', maxLines: 3),
              Text('Status: ${_status.toString()}\n'),
              Text('CountryCode: $_countryCode\n'),
              Text('Subscription: ${_musicSubsciption.toString()}\n'),
              Text('PlayerState: ${_playerState?.playbackStatus.toString()}'),
              Text('PlayerQueue: ${_playerQueue?.currentEntry?.title}'),
              TextButton(
                  onPressed: () async {
                    _musicKitPlugin.setShuffleMode(MusicPlayerShuffleMode.songs);
                    _musicKitPlugin.musicPlayerState.then((value) => debugPrint(value.shuffleMode.name));
                  },
                  child: const Text('Shuffle')),
              TextButton(
                  onPressed: () async {
                    final status = await _musicKitPlugin.requestAuthorizationStatus();
                    setState(() {
                      _status = status;
                    });
                  },
                  child: const Text('Request authorization')),
              TextButton(
                  onPressed: () async {
                    await _musicKitPlugin.setQueue(albumFolklore['type'], item: albumFolklore);
                    await _musicKitPlugin.play();
                  },
                  child: const Text('Play an Album'))
            ],
          ),
        ),
      ),
    );
  }
}