Flutter iOS集成Spotify遇MissingPluginException，与后台服务插件冲突

我使用免费Spotify账号开发，尝试将Flutter iOS应用与Spotify集成，代码在Android平台运行完全正常，但在iPhone上出现异常。已遵循《Spotify iOS SDK快速开始》中“配置iOS SDK”章节的步骤，应用能够成功连接Spotify、获取令牌、唤起应用并播放歌曲，也能点击底部按钮切换示例歌曲《I'll Make a Man Out of You》，但iOS上触发以下错误：

AppRemote: Connecting...
[connection] nw_socket_handle_socket_event [C1.1.1:1] Socket SO_ERROR [61: Connection refused]
AppRemote: Established a connection to the Spotify app.
AppRemote: Authenticated with the Spotify app.
AppRemote: Established a session with the Spotify app.
flutter: \^[[38;5;12m┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────<…>
flutter: \^[[38;5;12m│ #0   _SpotifyExampleState.setStatus (package:runwith/screens/SpotifyExample/Debugging.dart:647:13)<…>
flutter: \^[[38;5;12m│ #1   _SpotifyExampleState.getAccessToken (package:runwith/screens/SpotifyExample/Debugging.dart:459:7)<…>
flutter: \^[[38;5;12m├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄<…>
flutter: \^[[38;5;12m│ 22:26:44.966 (+0:01:30.499038)<…>
flutter: \^[[38;5;12m├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄<…>
flutter: \^[[38;5;12m│ 💡 Got a token: BQDPjhNCDTPalqK71CNYU2PGI_VF8ejg7PzaQK7e01p2mnpi4smf7bX5SCANXUd211T84grf_DgcKKmuWN7KbOGPy-sKESYmgKG59_4EC0MKX21E6mZ9UVPaH58D4ovtKg33DJRU9FRJEWODFOISYGIUU09S328EWEYYWR802384WUDJUF98YCOIFIHSDJHCJ38EYIEDN90WEUF0UJDOFCJW09R0JFOIJU0R9U0rlumS_GSMx-OR0arQdE7ayy-OJxIDXCyPIZ8o0NlQtQdPwoJ7ZIxT4vzmNj4kj4JnbWxiy2V5v6NdMhUY8qYLk7YmZSdY2oL8CZe9oMOGQSoXR7cJA<…>
flutter: \^[[38;5;12m└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────<…>

======== Exception caught by services library ======================================================
The following MissingPluginException was thrown while activating platform stream on channel player_state_subscription:
MissingPluginException(No implementation found for method listen on channel player_state_subscription)

When the exception was thrown, this was the stack: 
#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:313:7)
<asynchronous suspension>
#1      EventChannel.receiveBroadcastStream.<anonymous closure> (package:flutter/src/services/platform_channel.dart:662:9)
<asynchronous suspension>
====================================================================================================

======== Exception caught by services library ======================================================
The following MissingPluginException was thrown while activating platform stream on channel player_context_subscription:
MissingPluginException(No implementation found for method listen on channel player_context_subscription)

When the exception was thrown, this was the stack: 
#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:313:7)
<asynchronous suspension>
#1      EventChannel.receiveBroadcastStream.<anonymous closure> (package:flutter/src/services/platform_channel.dart:662:9)
<asynchronous suspension>
====================================================================================================

核心错误为：
MissingPluginException(No implementation found for method listen on channel player_state_subscription)
MissingPluginException(No implementation found for method listen on channel player_context_subscription)

后续排查发现，flutter_background_service插件会破坏Spotify播放器状态流：停止后台服务时功能正常，但若在连接Spotify前启动后台服务则触发上述错误。现寻求两者共存的解决方案。

相关信息 #

依赖插件 #

dependencies:
  flutter:
    sdk: flutter
  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2
  # ThirdParty Dependencies Added Manually
  shared_preferences: ^2.0.15
  google_fonts: ^3.0.1
  http: ^0.13.4
  http_interceptor: ^1.0.2
  dio: ^4.0.4
  retrofit: ^3.0.0
  flutter_datetime_picker: ^1.5.1
  intl: ^0.17.0
  fluttertoast: ^8.0.9
  sn_progress_dialog: ^1.1.3
  flutter_native_splash: ^2.2.14
  flutter_launcher_icons: ^0.10.0
  animated_splash_screen: ^1.3.0
  country_code_picker: ^2.0.2
  country_codes: ^2.2.0
  animated_bottom_navigation_bar: ^1.1.0
  carousel_slider: ^4.1.1
  csc_picker: ^0.2.6
  google_maps_flutter: ^2.2.0
  location: ^4.4.0
  permission_handler: ^9.2.0
  path_provider: ^2.0.8
  provider: ^6.0.1
  flutter_polyline_points: 1.0.0
  share_plus: ^4.0.4
  flutter_background_service: ^2.4.5
  device_info_plus: ^8.0.0
  sensors_plus: ^2.0.1
  image_picker: ^0.8.4+8
  better_player: any
  flutter_google_places: 0.3.0
  google_maps_webservice: ^0.0.19
  google_api_headers: ^1.5.0
  custom_marker: 1.0.0
  pull_to_refresh: ^2.0.0
  spotify_sdk: ^2.3.1
  flutter_dotenv: ^5.0.2
  cast: ^1.1.1
  logger: ^1.1.0
  flutter_vlc_player: ^7.1.4
  app_settings: ^4.1.1
  number_to_words: ^1.0.0
  just_audio: ^0.9.31
  webview_flutter: ^3.0.4
  flutter_easyloading: ^3.0.5
  flutter_html: ^3.0.0-alpha.6
  just_the_tooltip: ^0.0.12
  image: ^3.3.0
  screenshot: ^1.3.0

Flutter Doctor输出 #

/Users/my_macbook_username/AndroidStudioProjects/flutter_v3.7.11/bin/flutter doctor --verbose
[!] Flutter (Channel stable, 3.7.11, on macOS 13.3.1 22E261 darwin-arm64, locale en-PK)
    • Flutter version 3.7.11 on channel stable at /Users/my_macbook_username/AndroidStudioProjects/flutter_v3.7.11
    ! The flutter binary is not on your path. Consider adding /Users/my_macbook_username/AndroidStudioProjects/flutter_v3.7.11/bin to your path.
    ! The dart binary is not on your path. Consider adding /Users/my_macbook_username/AndroidStudioProjects/flutter_v3.7.11/bin to your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f72efea43c (3 weeks ago), 2023-04-11 11:57:21 -0700
    • Engine revision 1a65d409c7
    • Dart version 2.19.6
    • DevTools version 2.20.1
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /Users/exeideasmy_macbook_usernameLibrary/Android/sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14E222b
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)

[✓] Connected device (3 available)
    • SM A325F (mobile) • RF8R509QMYF • android-arm64  • Android 13 (API 33)
    • macOS (desktop)   • macos       • darwin-arm64   • macOS 13.3.1 22E261 darwin-arm64
    • Chrome (web)      • chrome      • web-javascript • Google Chrome 112.0.5615.137

[✓] HTTP Host Availability
    • All required HTTP hosts are available

! Doctor found issues in 1 category.
Process finished with exit code 0

目标平台与设备 #

• 系统版本：iOS 16.1、Android 13
• 设备：iPhone X、Samsung A32

开发环境 #

• 系统：Mac OS 13.3.1 (22E261)
• IDE：Android Studio Dolphin | 2021.3.1 Patch 1

内容的提问来源于stack exchange，提问作者Muhammad Hassan