Post not yet marked as solved
I've just begun to dip my toes into the iOS16 waters.
One of the first things that I've attempted is to edit a library playlist using:
try await MusicLibrary.shared.edit(targetPlaylist, items: tracksToAdd)
Where targetPlaylist is of type MusicItemCollection<MusicKit.Playlist>.Element and tracksToAdd is of type [Track]
The targetPlaylist was created, using new iOS16 way, here:
let newPlaylist = try await MusicLibrary.shared.createPlaylist(name: name, description: description)
tracksToAdd is derived by performing a MusicLibraryRequest on a specific playlist ID, and then doing something like this:
if let tracksToAdd = try await playlist.with(.tracks).tracks {
// add tracks to target playlist
}
My problem is that when I perform attempt the edit, I am faced with a rather sad looking crash.
libdispatch.dylib`dispatch_group_leave.cold.1:
0x10b43d62c <+0>: mov x8, #0x0
0x10b43d630 <+4>: stp x20, x21, [sp, #-0x10]!
0x10b43d634 <+8>: adrp x20, 6
0x10b43d638 <+12>: add x20, x20, #0xfbf ; "BUG IN CLIENT OF LIBDISPATCH: Unbalanced call to dispatch_group_leave()"
0x10b43d63c <+16>: adrp x21, 40
0x10b43d640 <+20>: add x21, x21, #0x260 ; gCRAnnotations
0x10b43d644 <+24>: str x20, [x21, #0x8]
0x10b43d648 <+28>: str x8, [x21, #0x38]
0x10b43d64c <+32>: ldp x20, x21, [sp], #0x10
-> 0x10b43d650 <+36>: brk #0x1
I assume that I must be doing something wrong, but I frankly have no idea how to troubleshoot this.
Any help would be most appreciated. Thanks. @david-apple?
Post not yet marked as solved
Hi there,
I have a related forum thread here and a Feedback Assistant ticket open, but this issue seems different.
Sometime within the last 2-3 weeks, code related to MusicLibrary has stopped working. None of my code has changed.
For example, the below two snippets used to work fine:
for track in newTracks {
try await MusicLibrary.shared.add(track, to: targetPlaylist)
}
try await MusicLibrary.shared.edit(targetPlaylist, items: items)
newTracks and items are both fetched using:
try await targetPlaylist.with(.tracks, preferredSource: .catalog).tracks
Using preferredSource: .catalog was a workaround used to address the issue in the aforementioned post above.
All iOS 16 capable functions are decorated with:
@available(iOS 16, *)
or in an if block:
if #available(iOS 16, *) {...
What's happening is that the following is showing up in the console:
2022-11-28 23:31:11.279648+0700 MyApp[38653:6736450] [core] Attempted to register account monitor for types client is not authorized to access: {(
"com.apple.account.iTunesStore"
)}
2022-11-28 23:31:11.279718+0700 MyApp[38653:6736450] [Default] <ICUserIdentityStoreACAccountBackend: 0x282adb520> Failed to register for account monitoring. err=Error Domain=com.apple.accounts Code=7 "(null)"
2022-11-28 23:31:11.279758+0700 MyApp[38653:6736450] [Default] ICUserIdentity - Unable to retrieve DSID for userIdentity=<ICUserIdentity 0x2806eb120: [Active Account: <unresolved>]> - error=Error Domain=com.apple.accounts Code=7 "(null)"
These errors are not caught by a do/catch block, but I assume they are related to the issue, and I believe they have to do with MyApp trying to access things that Music Kit thinks it's not supposed to. For example, if MyApp attempts to work with a playlist that it did not create, errors would be expected, thrown errors.
The thing is that I know I'm working with resources that are created by MyApp.
In fact, in trying to test this, I just tried to create a playlist with the below, and the same behavior is occurring:
@available(iOS 16, *)
func createPlaylist2(name: String, description: String) async -> MusicKit.Playlist? {
do {
Logger.log(.info, "Creating Playlist: \(name)")
Logger.log(.shrug, "Does this work?")
let newPlaylist = try await MusicLibrary.shared.createPlaylist(name: name, description: description) // <= Things stop here!
Logger.log(.success, "New playlist created: \(newPlaylist)") // <= this isn't logged.
return newPlaylist // <= nothing is returned
} catch {
Logger.log(.error, "Could not create new playlist: \(error)") // <= no error logged.
}
return nil
}
The result is:
2022-11-29 00:15:01.875064+0700 MyApp[38794:6760471] [core] Attempted to register account monitor for types client is not authorized to access: {(
"com.apple.account.iTunesStore"
)}
2022-11-29 00:15:01.875372+0700 MyApp[38794:6760471] [Default] <ICUserIdentityStoreACAccountBackend: 0x283005720> Failed to register for account monitoring. err=Error Domain=com.apple.accounts Code=7 "(null)"
2022-11-29 00:15:01.876677+0700 MyApp[38794:6760323] [EntityQuery] Finished executing query in 0.000999928s
2022-11-29 00:15:01.889055+0700 MyApp[38794:6760323] [EntityQuery] Finished fetching results in 0.0120001s
2022-11-29 00:15:01.891235+0700 MyApp[38794:6760329] [core] Attempted to register account monitor for types client is not authorized to access: {(
"com.apple.account.iTunesStore"
)}
2022-11-29 00:15:01.891684+0700 MyApp[38794:6760329] [Default] <ICUserIdentityStoreACAccountBackend: 0x283005720> Failed to register for account monitoring. err=Error Domain=com.apple.accounts Code=7 "(null)"
📘 Creating Playlist: TEST PLAYLIST
🤷🏻♀️ Does this work?
2022-11-29 00:15:06.697374+0700 MyApp[38794:6760329] [] nw_path_necp_check_for_updates Failed to copy updated result (22)
What's really nasty is that errors are not thrown, so they can't be caught and handled in a catch block.
I know that iOS 16.1 got released around the end of October, but I really don't know what's going on here.
The behavior is showing up in both prod and when testing locally.
Any help would be most appreciated.
@JoeKhun: Did I miss the memo?