My question Is there a way to perform an iCloud keychain reset in order to be able to test CKErrorUserDidResetEncryptedDataKey ? I found this section in the CloudKit documentation https://developer.apple.com/documentation/cloudkit/encrypting-user-data#Handle-a-User-Keychain-Reset I want to be prepared for the zoneNotFound / CKErrorUserDidResetEncryptedDataKey case. However, I can't find a way to actually reproduce this error with an iCloud (test-) user and can't find any Apple documentation on how to perform sucha "User Keychain Reset". The only thing that almost looked like it I came across was in the Keychain.app's Settings "Reset Default Keychains…". However, performing this didn't seem to affect the CloudKit data used in our App at all. I've been trying to do this with an Apple account that has 2FA active and a recovery account assigned. We're only targetting >= iOS 18, macOS >= 15.

I'm implementing a timer feature and facing the issue that the live activity I'm starting just continues showing after the timer is complete. The body of the live activity widget is more or less: ActivityConfiguration(for: WhendyWidgetAttributes.self) { context in VStack { Text( context.state.timerEndDate, style: .timer ) // if Date.now < timerEndTime { Text("Done") } self.expandedView(state: context.state) } } … Ideally I could get the activity to show something else when it is done but I don't know how to get it to re-evaluate it's body once the end time is reached. I create the activity with let activity = try ActivityKit.Activity.request( attributes: attributes, content: .init( state: .init(timerEndDate: timerEndDate), staleDate: timerEndDate ), pushType: nil ) Can I schedule the activity to do a refresh it's body (and reevaluating Date.now) once the timerEndDate is reached? Considered Approaches trying staleDate However, the activity never shows that it has become stale. Would it be expected that it shows the stale-ness? scheduling dismissal I also thought about starting and immediately stopping the activity with a delayed dismissal, but unfortunately it seems this is limited to a 4 hour window, and I'd like longer timers too. remote updates I understand I could use remote notifications to update the live activity, but I'd really like to keep things local as all the functionality is locally plannable. Background Tasks I understand these don't run reliably or at a predictable time. A Timer in the app that updates the content I think this would only update the activity while the app is in foreground.

Is it possible to write to an App Group's Container folder or UserDefaults from an iOS Thumbnail Extension or QuickLook Extension? It doesn't work. It does work for a Widget extension. I've added the App Group to the Entitlements of each extension. For writing a file to App Group Container I get Error Domain=NSCocoaErrorDomain Code=513 "Du hast nicht die Zugriffsrechte, um die Datei „quicklook 01 current.log“ im Ordner „DocumentInvestigation“ zu sichern." UserInfo={NSFilePath=/private/var/mobile/Containers/Shared/AppGroup/<redacted: the container UUID>/DocumentInvestigation/quicklook 01 current.log, NSUnderlyingError=0x28090bb10 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}} For setting App Group UserDefaults [User Defaults] Couldn't write values for keys ( &#9;&#9;example ) in CFPrefsPlistSource<0x2839cc700> (Domain: <redacted: the-group-identifier>, User: kCFPreferencesCurrentUser, ByHost: No, Container: (null), Contents Need Refresh: No): setting preferences outside an application's container requires user-preference-write or file-write-data sandbox access The use case is, that we are investigating an issue and would like to log to a file which we then can have customers send us.