I've got an iOS app build on Swift MusicKit that retrieves Apple Music tracks and presents them to a user in a list. Tapping the track attempts to the track using this function: func handlePlayThisTrack(track: AppleMusicTrack) async {   do {     let tracksToQueue = sortedTracks.compactMap{$0.track}     if let track = tracksToQueue.first(where: {$0.id.rawValue == track.id}) {       print("track", track)       player.queue = ApplicationMusicPlayer.Queue(for: tracksToQueue, startingAt: track )       try await player.play()     } else {       Logger.log(.error, "Track does not exist in sorted tracks!")     }   } catch {     print(error)   } } Sometimes, however, the track does not play, and checking the logs, I see the below. This only happens on some tracks, but on those that don't work it happens consistently. When printing the details for a track that doesn't work, it looks like this: track Track.song(Song(id: "1443100129", title: "She's Not There", artistName: "The Zombies")) And this looks like all the other tracks that do play. So I don't know where to look for said missing play parameters mentioned in the error. I have an inkling that this may have to do with the track not being available due to the country/storefront, and that the error message is misleading. I'm using the following to get the tracks: MusicCatalogResourceRequest<Song>(matching: \.isrc, equalTo: isrc) // <= the ISRC of the track I want to fetch My assumption is that the MusicCatalogResourceRequest would only respond with tracks in my country/storefront, but I think this may not be the case. Is there any way to create a MusicCatalogRequest in such a way that I only get results that are playable in my country/storefront? Any advice would be most appreciated. Thanks! 2022-02-25 02:24:56.971343+0700 MusicApp[19452:1186508] [Playback] Failed to insert MusicPlayer.Queue.Entry(id: "F6A04D56-F5C5-4628-B136-5438E188FDA5", transientItem: Track.song(Song(id: "1443100129", title: "She's Not There", artistName: "The Zombies"))) into queue descriptor because it's missing play parameters. 2022-02-25 02:24:57.102432+0700 MusicApp[19452:1186733] [Entitlements] MSVEntitlementUtilities - Process MusicApp PID[19452] - Group: (null) - Entitlement: com.apple.accounts.appleaccount.fullaccess - Entitled: NO - Error: (null) 2022-02-25 02:24:57.104579+0700 MusicApp[19452:1186733] [core] Attempted to register account monitor for types client is not authorized to access: {(   "com.apple.account.iTunesStore" )}

I've got an iOS app that performs a series of operations when initialized and when a refresh is performed. In short, that app has: An obervable object (appManager) that houses variables that act as "state" for the app. Methods in the observable object that perform a variety of operations. Here's an example: Perform an API operation to get tokens to perform API actions on remote API service. Perform a fetch on an external database to retrieve some data. Decode that data an place the data into @Published variables, using (DispatchQueue.main.async). Perform another remote API fetch operation on a different endpoint. Put more variables in "state" So when the user opens the app and after init runs, they see what they expect to see. And when they tap a "refresh" button, another function (e.g. getUpdatedAppData()) is called with similar steps to the above, and the app updates the published variables and the view(s) update. The above steps are all performed using async functions, using Swift's new async/await functionality. Everything works swimmingly when the app is in the foreground. What I'd like to do is perform the updateAppData() function using Background tasks as described here.. I have successfully setup the app to register and schedule a task, using BGTaskScheduler, and I can successfully emulate the triggerring of that task by setting a breakpoint and running the following code in the console: e -l objc -- (void)[[BGTaskScheduler sharedScheduler] _simulateLaunchForTaskWithIdentifier:@"com.example.task"] If the background tasks is something simple, like printing to the console, it seems to work    private func configureBackgroundTasks() {     Logger.log(.info, "Registering background tasks...")     let bgTaskIdentifier = "com.example.task"     BGTaskScheduler.shared.register(forTaskWithIdentifier: bgTaskIdentifier, using: DispatchQueue.main) { (task) in       Logger.log(.info, "Performing background task \(bgTaskIdentifier)")       task.setTaskCompleted(success: true)       backgroundTaskManager.scheduleAppRefresh()     }   } However, if the function is something like the below, I can see the function being triggered, when simulating the running of the task, but the function hangs at the start of the first async operation (e.g. fetch tokens above). It seems to "try to complete" (and usuually fails) once the app is brought to the foreground, but that's obviously not what I want to happen. Surely, I'm misunderstanding something and/or doing something wrong, so I'm hoping to get some help here. Thanks in advance for any assistance toward achieving what I'm trying to do here.    private func configureBackgroundTasks() {     Logger.log(.info, "Registering background tasks...")     let bgTaskIdentifier = "com.example.task"     BGTaskScheduler.shared.register(forTaskWithIdentifier: bgTaskIdentifier, using: DispatchQueue.main) { (task) in       Logger.log(.info, "Performing background task \(bgTaskIdentifier)")       Task.init {         if let updatedData = await appManager.getUpdateAppData() {           DispatchQueue.main.async {             appManager.data = updatedData           }         }       }       task.setTaskCompleted(success: true)       backgroundTaskManager.scheduleAppRefresh()     }   }

Hi there, I don't know if this is possible or not, so I'm asking here. I'd like to know if there is a way to get a list of an Apple Music public playlist via the Apple Music API. I don't think that Music Kit is an option here, as these users would not be Apple Music users, but, again, I'm not sure. The first stumbling block is that I can't seem to figure out how to get an Apple Music users ID or maybe their curator ID, if that's what is needed. Once I had that, I'm still not sure how to get that user's public playlists. Any help on this would be appreciated. Thanks!

Hi there, The following code snippet will open Apple Music on an iOS device to a catalog playlist, using the globalId. if let url = URL(string: "music://music.apple.com/us/playlist/\(playlist!.attributes.playParams.globalId!)") {             await UIApplication.shared.open(url) What I'd like to do is open Apple Music using the standard ID, as I don't want to force users to make a playlist public in order to link to it from my app. This requires the above code to use a library link instead of a catalog link. I've tried various permutations of the url, but I can't seem to find the secret sauce. Any tips, would be most appreciated. Thanks!

Hi there, I've started building an iOS app a couple months ago from scratch, using iOS 15 as the deployment target. I've finally gotten to the point where I'd like to have this tested in Test Flight, which I've done w/o issue with other apps. The problem and my confusion is around the fact that the app will run when my device (iPhone XS) is connected via USB and I run the app in Xcode, but when I run it after deployed via AppConnect and installed via Test Flight or when exported to ipa and imported via Apple Configurator 2, the app opens for an instant and then closes. No crash reports seem to be generated. The best I can seem to do is open the console on the device via Xcode, filter by Errors and Faults, and try to see what might be the problem. There's a couple things I see that make me think it's related to my problem. These two seem likely culprits: error 00:17:20.220010-0700 ReportCrash vm_read failed for task 14895, kr=4, start_address = 0x280c24180, end_address = 0x0 Scene FBSceneManager/sceneID:xyz.uniqeappname-default update failed: <NSError: 0x28385b960; domain: FBSceneErrorDomain; code: 1 (operation-failed); reason: "Scene update failed."> {   NSUnderlyingError = <NSError: 0x28243ff60; domain: FBWorkspaceScene; code: 1; reason: "Client process exited.">; } The thing is that I've googled the heck out of these, and can't find anything that might help me resolve the issue. Here's what I've tried (not all at the same time): Edit the scheme so that Run uses the Release build config. I thought this might make the app crash when running locally, but no. This has no effect when running the app locally via Xcode. The app still works as expected. Edit the scheme so that Archive uses the Debug configuration. I thought this might give more crash detail, but no effect. App still stops and there's no crash report. Setting the Optimization Level under Apple Clang - Code Generation from Fastest to None. I've read that this helps some folks. Selectively disabling parts of the app. I've read that certain things break the app when not running locally (e.g. deprecated UISearchDisplayController, which I'm not using). None of the above seem to have any effect at all, let alone toward resolving the issue. I'm using the following 5 packages in the app: Lottie Amplify SpotifyAPI (SpotifyWebAPI by Peter Schorn) KeychainAccess Firebase These add some additional dependencies. One of these, swift-nio-zlib-support, which is a dependency of Starscream, apparently, shows a couple warnings, not errors at build time. Amplify is the ios-sdk and used for auth and storage. Firebase is used for notifications and is configured in the AppDelegate. Notifications work when running via Xcode. This app also uses MusicKit iOS. Again, everything works when running via Xcode, which is baffling. Frankly, I'm at a loss as to how to troubleshoot this any further, so I'm hoping to get some help here. Thanks in advance for any advice toward resolving this issue.

I'm trying to do something that I though would be simple; however, I'm tripping up on something... In brief, I want to get all tracks from a playlist in an AppleMusic authorized user's playlist with the following function:     func getTracksFromAppleMusicPlaylist(playlistId: MusicItemID) async throws -> [Track]? {         print("Fetching AppleMusic Playlists...")         print("Playlist ID: \(playlistId)")         var playlistTracks: [Track]? = []         do {             var playlistRequest = MusicCatalogResourceRequest<Playlist>(matching: \.id, equalTo: playlistId )             playlistRequest.properties = [.tracks]             let playlistResponse = try await playlistRequest.response()             print("Playlist Response: \(playlistResponse)")             let playlistWithTracks = playlistResponse.items             let tracks = playlistWithTracks.flatMap { playlist -> MusicItemCollection<Track> in                 playlist.tracks ?? []             }             playlistTracks = tracks.count > 1 ? tracks : nil         } catch {             print("Error", error)             // handle error         }         return playlistTracks     } This function results in the following error: 2021-08-28 04:25:14.335455+0700 App[90763:6707890] [DataRequesting] Failed to perform MusicDataRequest.Context(   url: https://api.music.apple.com/v1/catalog/us/playlists/p.7XxxsXxXXxX?include=tracks&omit%5Bresource%5D=autos,   currentRetryCounts: [.other: 1] ) with MusicDataRequest.Error(   status: 404,   code: 40400,   title: "Resource Not Found",   detailText: "Resource with requested id was not found",   id: "QMK7GH4U7ITPMUTTBKIOMXXXX",   originalResponse: MusicDataResponse(     data: 159 bytes,     urlResponse: <NSHTTPURLResponse: 0x00000002820c0b60>   ) ). The playlistID being used is a value that has been picked from an existing playlist in the user's library, via a function that uses this code snippet: if let url = URL(string: "https://api.music.apple.com/v1/me/library/playlists?limit=100") {                let dataRequest = MusicDataRequest(urlRequest: URLRequest(url: url)) ... The only thing I can think of is that the playlistId from the above snippet is converted to a string when decoding into a struct, after which it is changed back to a MusicItemID with an init, like MusicItemID(playlistId). Any thoughts? Because I'm at a loss...

I'm trying to perform a search for a song by album, artist, & title in the cases when I don't know the song's id (or if there is no isrc match) Reading the docs, it seems that I can only search for one term at a time, but against a list of MusicCatalogSearchable Types So my strategy would be to search for albums by name, then filter the results by artist and title. Two questions here, really: Is the above a good strategy, or is there a better way to do this? For the life of my I cannot figure out from the docs, what to put in place of [MusicCatalogSearchable.Album] in the below. var albumRequest = MusicCatalogSearchRequest(term: album.name, types: [MusicCatalogSearchable.Album]) Xcode doesn't like the above and gives the following error: Type 'MusicCatalogSearchable' has no member 'Album' Sadly, everything I've tried, results in an error. When I look in MusicKit, I see the below, which seems empty to me: @available(iOS 15.0, macOS 12.0, tvOS 15.0, watchOS 8.0, *) public protocol MusicCatalogSearchable : MusicItem { } What am I missing?

I'm slowly learning the new MusicKit beta for swift. I've learned to successfully retrieve tracks of type Song using MusicDataRequest, using the following: ... let countryCode = try await MusicDataRequest.currentCountryCode if let url = URL(string: "https://api.music.apple.com/v1/catalog/\(countryCode)/songs?filter[isrc]=\(isrc)") {   let dataRequest = MusicDataRequest(urlRequest: URLRequest(url: url))   let dataResponse = try await dataRequest.response() ... However, when I decode the data, there does not seem to be any album information that I can see. I've tried adding includes=albums to the URL, but I don't think that's the right approach, because when I veiw the Song struct in MusicKit, I don't see a reference to an Album type anywhere. Any advice on how to retrieve the album information would be most appreciated. Thanks.

Trying to do what I can do pretty easily with a standard post request in a JS app, but now with Swift, and I'm struggling. I've tried with MusicRequestItem, but that fails, so I went with this and it responds with a 400. func addTracksToAppleMusicPlaylist(targetPlaylistId: String, tracksToSave: [Song]) async throws -> Void {     let tracks = tracksToSave.compactMap{         AppleMusicPlaylistPostRequest(id: $0.id, type: "songs")     }     do {         print("Saving tracks to Apple Music Playlist: \(targetPlaylistId)")         let tokens = try await self.getAppleMusicTokens()         if let url = URL(string: "https://api.music.apple.com/v1/me/library/playlists/\(targetPlaylistId)/tracks") {             var request = URLRequest(url: url)             request.httpMethod = "POST"             request.addValue("Bearer \(tokens.devToken)", forHTTPHeaderField: "Authorization")             request.addValue("\(tokens.userToken)", forHTTPHeaderField: "Music-User-Token")             request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")             let encoder = JSONEncoder()             let data = try encoder.encode(tracks)             request.httpBody = data             let session = URLSession(configuration: .default)             let task = session.dataTask(with: request) {(data, response, error) in                 if error == nil {                     if let httpResponse = response as? HTTPURLResponse {                         print("statusCode: \(httpResponse.statusCode)")                         print("response: \(httpResponse)")                     }                 } else {                     print("Error saving tracks to playlist \(String(describing: error))")                 }             }             task.resume()         } else {             print("Bad URL!")         }     } catch {         print("Error Saving Tracks to Playlist", error)         throw error     } }

Hi there, I'm creating an iOS 15 app, using the new Swift MusicKit beta. I've got basic "arbitrary" GET calls working with MusicDataRequest, like: fetch playlists and tracks. However, I cannot find good docs for adding tracks to a playlist in a user's library. I guess I could do this the "old way", but then I don't get the super-nice feature of auto dev/user tokens. So the question is: how to a POST, instead of GET in the following: let url = URL(string: "https://api.music.apple.com/v1/me/library/playlists/`\(targetPlaylistId)/tracks") let dataRequest = MusicDataRequest(urlRequest: URLRequest(url: url))

I've got an app that allows a user to add songs to playlists in their library.I'd like to be able to delete songs as well, but it appears that there is no way to do this?It's baffling that this fundamental functionality is missing. Is there some super important reason that this is not possible? If so, what might that be?Are there plans to allow this functionality in the future?Thanks...