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MPMusicPlayerController无法从苹果音乐播放

apple-musickit apple-music mpmusicplayercontroller ios
  •  0
  • frangulyan  · 技术社区  · 5 年前 

    2019-09-26 00:15:57.790999+0200 [1886:463973] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2019-09-26 00:15:57.791129+0200 [1886:463973] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)"
2019-09-26 00:15:57.792655+0200 [1886:464074] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2019-09-26 00:15:57.792770+0200 [1886:464074] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)"
2019-09-26 00:15:57.794124+0200 [1886:464074] SSAccountStore: Unable to get the local account. error = Error Domain=SSErrorDomain Code=100 "Cannot connect to iTunes Store" UserInfo={NSLocalizedDescription=Cannot connect to iTunes Store}
2019-09-26 00:15:59.670842+0200 [1886:463973] [SDKPlayback] -[MPMusicPlayerController prependQueueDescriptor] completed id=applicationMusicPlayer error: Error Domain=MPCPlayerRequestErrorDomain Code=1 "No commands provided." UserInfo={NSDebugDescription=No commands provided.}
2019-09-26 00:15:59.671051+0200 [1886:463973] [SDKPlayback] -[MPMusicPlayerController prepareToPlay] completed id=applicationMusicPlayer error: Error Domain=MPMusicPlayerControllerErrorDomain Code=1 "prepareToPlay without a queue" UserInfo={NSDebugDescription=prepareToPlay without a queue}
2019-09-26 00:15:59.681627+0200 [1886:464074] [MediaRemote] MRC <MPCPlayerPath: route=<MPAVEndpointRoute: 0x282930a80 name=iPhone uid=LOCAL> origin=Nastasia's iPhone-1280262988 bundleID=com.apple.MediaPlayer.RemotePlayerService playerID=MPMusicPlayerApplicationController>: Undo optimistic state [failed] command=Play error=Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1)" UserInfo={NSDebugDescription=Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1), MPCPlayerErrorKeyMediaRemoteCommandHandlerStatus=1}
2019-09-26 00:15:59.681787+0200 [1886:464074] [SDKPlayback] -[MPMusicPlayerController play] completed id=applicationMusicPlayer error: Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 0" UserInfo={NSDebugDescription=Failed to send command 0, NSUnderlyingError=0x281319230 {Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1)" UserInfo={NSDebugDescription=Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1), MPCPlayerErrorKeyMediaRemoteCommandHandlerStatus=1}}}
2019-09-26 00:16:03.596320+0200 [1886:464071] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2019-09-26 00:16:03.596374+0200 [1886:464071] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)"
2019-09-26 00:16:03.597965+0200 1886:464051] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2019-09-26 00:16:03.598079+0200 [1886:464051] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)"
2019-09-26 00:16:03.599416+0200 [1886:464074] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2019-09-26 00:16:03.599456+0200 [1886:464074] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)"
2019-09-26 00:16:03.599542+0200 [1886:464074] SSAccountStore: Unable to get the local account. error = Error Domain=SSErrorDomain Code=100 "Cannot connect to iTunes Store" UserInfo={NSLocalizedDescription=Cannot connect to iTunes Store}

    我还尝试了苹果的官方示例代码项目 Adding-Content-to-Apple-Music ,得到了类似的结果: 

    
2019-09-25 23:20:37.268162+0200 [1738:432623] [RemoteControl] userIdentityForMediaRemoteOptions -❗️No user identity data. Using active account.
2019-09-25 23:20:37.333703+0200 [1738:432751] [SDKPlayback] -[MPMusicPlayerController prepareToPlayWithCompletionHandler:] completed id=applicationMusicPlayer error: Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 122" UserInfo={NSDebugDescription=Failed to send command 122, NSUnderlyingError=0x282eacff0 {Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 122 (MRMediaRemoteCommandHandlerStatus = 2)" UserInfo={NSDebugDescription=Failed to send command 122 (MRMediaRemoteCommandHandlerStatus = 2), MPCPlayerErrorKeyMediaRemoteCommandHandlerStatus=2}}}
2019-09-25 23:20:37.333721+0200 [1738:432562] [SDKPlayback] -[MPMusicPlayerController prepareToPlay] completed id=applicationMusicPlayer error: Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 122" UserInfo={NSDebugDescription=Failed to send command 122, NSUnderlyingError=0x282eacff0 {Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 122 (MRMediaRemoteCommandHandlerStatus = 2)" UserInfo={NSDebugDescription=Failed to send command 122 (MRMediaRemoteCommandHandlerStatus = 2), MPCPlayerErrorKeyMediaRemoteCommandHandlerStatus=2}}}
2019-09-25 23:20:37.337138+0200 [1738:432546] [MediaRemote] MRC <MPCPlayerPath: route=<MPAVEndpointRoute: 0x281498a80 name=iPhone uid=LOCAL> origin=Nastasia's iPhone-1280262988 bundleID=com.apple.MediaPlayer.RemotePlayerService playerID=MPMusicPlayerApplicationController>: Undo optimistic state [failed] command=Play error=Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1)" UserInfo={NSDebugDescription=Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1), MPCPlayerErrorKeyMediaRemoteCommandHandlerStatus=1}
2019-09-25 23:20:37.337529+0200 [1738:432562] [SDKPlayback] -[MPMusicPlayerController play] completed id=applicationMusicPlayer error: Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 0" UserInfo={NSDebugDescription=Failed to send command 0, NSUnderlyingError=0x282ead260 {Error Domain=MPCPlayerRequestErrorDomain Code=1000 "Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1)" UserInfo={NSDebugDescription=Failed to send command 0 (MRMediaRemoteCommandHandlerStatus = 1), MPCPlayerErrorKeyMediaRemoteCommandHandlerStatus=1}}}
2019-09-25 23:20:37.342424+0200 [1738:432623] [Middleware] INVALIDATE: 0x2813842d0: Invalidated before returning a response. Re-requesting items.
2019-09-25 23:20:38.144321+0200 [1738:432323] [SDKPlayback] Failed validators id=applicationMusicPlayer: {(
    play
)}
2019-09-25 23:20:38.944291+0200 [1738:432323] [SDKPlayback] Failed to get a valid response. Resetting expectations id=applicationMusicPlayer

    如果有人遇到过类似的问题,请告诉我如何解决。

    发生在iOS 12&13、iPhone6S和iPhone11上,苹果音乐帐户目前处于3个月试用期。所有的音乐功能都是存在的,能够成功地获得开发者令牌和音乐用户令牌,两者都可以很好地处理Apple音乐API请求。

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  •  1
  •   frangulyan    5 年前

    似乎其中一个原因是 musicPlayerController.prepend() 功能而不是 setQueue() . 不幸的是,我被迫使用 prepend() 因为音乐播放器的限制。

    以下是对我的应用程序需要执行的操作的简短描述:

    • 用户开始播放歌曲列表。
    • 在播放过程中,应用程序每5-10秒从后端获取一个新的歌曲列表,并将其设置为新的歌曲队列。这意味着它是相当动态的手段下发挥。

    现在,当在回放过程中设置新队列时, 真的很不擅长。如果我打电话 设置队列() 然后什么也不会发生,老的队伍会留下来。不过,如果我打电话 play() 或 prepareToPlay() 设置队列() 然后将停止当前播放,并开始播放新队列的第一首歌曲。这不是我想要的,我需要更改“幕后”队列,以便当用户在应用程序或iOS锁定屏幕中点击“跳到下一个”时,新歌曲正在播放。所以我用 -工作正常,当前播放没有中断。另类呼叫 perform()

    所以目前我只看到一个选项-手动存储一个状态,它将告诉你这是不是第一次运行。如果是,那么打电话 设置队列() ,否则调用 . 也没有办法让当前队列检查自己是否为空。

    关于 播放() 播放() 设置队列() 设置队列() 播放() ,它什么也没做,但是每次我按下pause/play时,由于前面的“silent”,播放器都会跳到下一首歌 . 我不得不实施另一个解决办法 player.currentPlaybackRate = 1 player.play() ,看起来不太好。如果所有这些都被记录在案,那就太好了。

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