问题
I'm currently experimenting with the Adding-Content-to-Apple-Music code found here: https://developer.apple.com/musickit/
I'm using: XCode 9 beta 2, iOS 11 (iPhone 5s)
I have a developer token (which works when I query the Apple Music API searching songs etc...) but I now want to use this to exchange for a User Token so I can perform write actions against my Apple Music account.
The test app fires up and allows me to request authentication. From this I can see:
- MPMedia Library - Authorized
- SKCloudServicesController - Authorized
- Capabilities:
- Add to Cloud Music Library
- Music Catalog Playback
My next obvious step is to use the developer token to gain the user token. However, as soon as I call the following:
cloudServiceController.requestUserToken(forDeveloperToken: developerToken, completionHandler: completionHandler)
i see the following error in the completionHandler - can anyone help?
2017-07-14 10:05:39.179300+0100 Adding-Content-to-Apple-Music[1326:172100] [MC] Reading from public effective user settings.
2017-07-14 10:05:40.635503+0100 Adding-Content-to-Apple-Music[1326:172299] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2017-07-14 10:05:40.636449+0100 Adding-Content-to-Apple-Music[1326:172100] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)"
2017-07-14 10:05:40.800933+0100 Adding-Content-to-Apple-Music[1326:172297] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=9 "(null)""
2017-07-14 10:05:40.801259+0100 Adding-Content-to-Apple-Music[1326:172299] SSAccountStore: Failed to fetch the backing accounts. error = Error Domain=com.apple.accounts Code=9 "(null)" An error occurred when requesting user token: The operation couldn’t be completed. (SKErrorDomain error 1.)
In Settings > iTunes & App Store on my device I am logged in with my Apple ID. Same goes for Apple Music too.
回答1:
Update on this:
I also posted about this over on the Apple dev forums. It was an error on their side and now appears to be fixed. I can get a UserToken in both iOS 10 and 11 now.
来源：https://stackoverflow.com/questions/45099905/applemusickit-sdk-sample-project-usertoken-issue