I am writing an iOS app using Swift and Xcode 13.1. I am using the Contacts Framework, and I read that each app has a default contacts container, and the default container in an app can be different than the default container in another app, and there is not a default container for the entire device. What determines which is the default container for the app made by an Xcode project? I didn't set the default container for my app and somehow the contacts container for a Google account became the default contacts container for my app. How do I use code to set the default contacts container for my app? How do I find out which is the default container of Apple's Contacts app that comes with iOS? I would like to set my app's default contacts container to the same default container of Apple's Contacts app, if that is the contacts container that is saved on iCloud. If not, I would like to set my app's default contacts container to the contacts container that is saved in iCloud. I assume that only one contacts container is saved on iCloud.

Hi, I encountered a crash that happens randomly on certain macOS. Here's the crash log. For clarity, only the crashed queue's stack trace is added. Process: Engage [6891] Path: /Applications/Engage.app/Contents/MacOS/Engage Identifier: com.mycompany.engage Version: 2.0.1 (20111120) Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Engage [6891] User ID: 2123560928 Date/Time: 2021-11-17 16:36:20.753 +0800 OS Version: Mac OS X 10.14.6 (18G9323) Report Version: 12 Anonymous UUID: C642EE95-AF30-723E-91B8-A1C9D4ECD9A6 Sleep/Wake UUID: B95DB75A-69E8-4F19-B735-CEC7A698AE00 Time Awake Since Boot: 40000 seconds Time Since Wake: 910 seconds System Integrity Protection: enabled Crashed Thread: 5 Dispatch queue: Contacts fetching queue Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Illegal instruction: 4 Termination Reason: Namespace SIGNAL, Code 0x4 Terminating Process: exc handler [6891] Application Specific Information: API MISUSE: Resurrection of an object Thread 0:: Dispatch queue: com.apple.main-thread ... Thread 1: ... Thread 2: ... Thread 3: ... Thread 4:: Dispatch queue: com.apple.root.background-qos ... Thread 5 Crashed:: Dispatch queue: Contacts fetching queue 0 libdispatch.dylib 0x00007fff703929a6 _os_object_retain + 34 1 com.apple.AppKit 0x00007fff41bbc6da -[_NSWorkspaceFileOperation initWithQueue:URLs:operation:completionHandler:] + 111 2 com.apple.AppKit 0x00007fff41bbc5a0 -[NSWorkspace recycleURLs:completionHandler:] + 726 3 com.apple.AddressBook.core 0x00007fff53cd5004 -[ABPersistentStoreBuilder removeDotNewPathForDatabasePath] + 212 4 com.apple.AddressBook.core 0x00007fff53cd42f3 -[ABPersistentStoreBuilder addPersistentStoreAtDatabasePath:] + 61 5 com.apple.AddressBook.core 0x00007fff53cd3da4 -[ABPersistentStoreCoordinatorFactory addStoresForAccounts:withStoreBuilder:] + 333 6 com.apple.AddressBook.core 0x00007fff53cccd7f -[ABPersistentStoreCoordinatorFactory pool_makeCoordinatorForAllAvailableSources] + 114 7 com.apple.AddressBook.core 0x00007fff53ccccc1 ABResultWithAutoreleasePool + 59 8 com.apple.AddressBook.core 0x00007fff53cccc80 -[ABPersistentStoreCoordinatorFactory makeCoordinatorForAllAvailableSources] + 65 9 com.apple.AddressBook.core 0x00007fff53ccca4c -[ABPersistentStoreCoordinatorMap nts_coordinatorForAllSourcesAndDidUpdateMap:] + 114 10 com.apple.AddressBook.core 0x00007fff53ccc99d -[ABPersistentStoreCoordinatorCache coordinatorForAllSources] + 55 11 com.apple.AddressBook.core 0x00007fff53ccc777 -[ABAddressBook(ABAddressBook_CoreData_Private) nts_managedObjectContextWithStoreDescription:databasePath:loadFailure:] + 288 12 com.apple.AddressBook.core 0x00007fff53ccc377 -[ABAddressBook(ABAddressBook_CoreData_Private) managedObjectContext] + 109 13 com.apple.AddressBook.core 0x00007fff53ccc2c0 __38+[ABAddressBook nts_SharedAddressBook]_block_invoke + 24 14 com.apple.AddressBook.core 0x00007fff53ccc257 ABRunWithLock + 32 15 com.apple.AddressBook.core 0x00007fff53cc8873 +[ABAddressBook nts_SharedAddressBook] + 137 16 com.apple.AddressBook.core 0x00007fff53cc8747 +[ABAddressBook nts_CreateSharedAddressBook] + 47 17 com.apple.AddressBook.core 0x00007fff53cc817e +[ABAddressBook sharedAddressBook] + 81 18 com.apple.contacts.ContactsPersistence 0x00007fff572427ee -[CNCDPersistenceStack makePersistenceContext] + 27 19 com.apple.contacts 0x00007fff43d048dd __71+[CNCDContactFetcher contactsForFetchRequest:inPersistenceStack:error:]_block_invoke + 73 20 com.apple.AddressBook.ContactsFoundation 0x00007fff571e407a +[CNEither eitherWithBlock:] + 63 21 com.apple.contacts 0x00007fff43d047e1 +[CNCDContactFetcher contactsForFetchRequest:inPersistenceStack:error:] + 147 22 com.apple.contacts 0x00007fff43d0462a -[CNCoreDataMapperX contactObservableForFetchRequest:] + 137 23 com.apple.contacts 0x00007fff43d03fc3 __91-[CNDataMapperContactStore enumerateContactsAndMatchInfoWithFetchRequest:error:usingBlock:]_block_invoke + 172 24 libsystem_trace.dylib 0x00007fff705f6724 os_activity_apply_f + 66 25 com.apple.contacts 0x00007fff43d03ed8 -[_CNContactsLogger fetchingContacts:] + 225 26 com.apple.contacts 0x00007fff43d03cee -[CNDataMapperContactStore enumerateContactsAndMatchInfoWithFetchRequest:error:usingBlock:] + 304 27 com.apple.contacts 0x00007fff43d16d6e -[CNContactStore enumerateContactsWithFetchRequest:error:usingBlock:] + 149 28 com.mycompany.engage 0x00000001076181f4 0x1074c6000 + 1384948 29 com.mycompany.engage 0x00000001076548ce 0x1074c6000 + 1632462 30 libdispatch.dylib 0x00007fff703925f8 _dispatch_call_block_and_release + 12 31 libdispatch.dylib 0x00007fff7039363d _dispatch_client_callout + 8 32 libdispatch.dylib 0x00007fff703998e0 _dispatch_lane_serial_drain + 602 33 libdispatch.dylib 0x00007fff7039a396 _dispatch_lane_invoke + 385 34 libdispatch.dylib 0x00007fff703a26ed _dispatch_workloop_worker_thread + 598 35 libsystem_pthread.dylib 0x00007fff705d3611 _pthread_wqthread + 421 36 libsystem_pthread.dylib 0x00007fff705d33fd start_wqthread + 13 Thread 6: ... In the stack trace, two lines that are related to my app 28 com.mycompany.engage 0x00000001076181f4 0x1074c6000 + 1384948 29 com.mycompany.engage 0x00000001076548ce 0x1074c6000 + 1632462 It just call the enumerateContacts(with: fetchRequest) on the instance of CNContactStore, and the fetchRequest is created using CNContactFetchRequest(keysToFetch: keysToFetch). Pretty straightforward. The stack trace goes into he Contacts framework, and then goes into the AddressBook framework, and eventually crashed. What could be the possible cause of the crash?

When I use the Contacts Framework with Swift for iOS 15 using Xcode 13, when I use CNContactStore instance method unifiedContacts(matching:keysToFetch:), what happens to those CNContact objects that are not linked with any other CNContact objects, would they be returned as non-unified contacts, or would they be left out since they are non-unified contacts?

How do I use Swift in iOS to take a Group of Contacts and copy it all to another iOS device using a different Apple ID? I have looked into fetching the Contacts using CNContactStore, using the Share App Extension, and somehow using .vcf files. I'm looking for any ideas anyone has. Hopefully I can pick the simplest way to do this from someone's idea.

Hi, I'm a project manager, not necessarily a developer so this will be a blunt, rookie question. We're working on an app, part of it includes adding our phone number to the user's contacts during onboarding. This phone number will be called by the user later when they need our service. Is there an easy or automated way to add convenience instead of having the user manually have to copy a number, and then create a contact?

Hi All, I want to generate QR code on Wallet pass which adds new contact to Address Book. I prepared .vcf file with contact data and sent it to iPhone, however the device only opened Address Book and nothing else happened. Do you have any idea how to fix it?

Watch OS8 is not syncing contacts. When I go to messages it will show group names but not the names of the individuals in the group. It will also not show single and nothing in contacts. I have contact syncing turned on. I have don't a restore and set up as new and issue remains. Anyone else having this issue?

I need to fetch user's contacts on a remote web server once the user successfully signs in with "Sign in with apple".

I think the image resizing process when creating the new contact is not done correctly. It's easy to understand if you create a vCard. [Steps] Take two pictures with the same subject. (Let "IMG_A" and "IMG_B".) Create a "New Contact". 2-1. Tap [Add Photo] and select "IMG_A". 2-2. Tap the [Choose] without doing anything in "Move and Scale". 2-3. Tap [Done] a few times to set the Photo. 2-4. Entering a name and other information is optional. 3. Save the contact as a vcf file to Files App. * [Share Contact] - [Save to Files] - [On My iPhone] - [Save] 4. Edit the contact that saved at step 2. 4-1. Release "IMG_A", and set the "IMG_B" in the same as the step 2-1 to 2-3. 5. Save the contact as a vcf file to Files app in the same as step 3. 6. Check the size of the two vcf files. [Result] The size of the two vcf files are very different. I think the cause is PHOTO property. As a result of extracting the image from vCard, the resolution was as follows. (Original: 3024 * 4032) IMG_A: 2784 * 2784 IMG_B: 320 * 320 [Remarks] I checked this issue occur iOS14(include new version of 14.4.2) and iOS12 is not occured.

Hi, I tried very hard to contact Apple through email since my apple developer account suddenly get a "Notice of Termination" email from Apple but Apple haven't response me 9 days ago. I'm really troubled with it. I even asked my friend to use his developer account to access to developer support portal but after receive a call from Apple, its just an automatic robot response try to make me press "1". After that Apple did call back but immediately hang up after 10 seconds ringing phone. Even if i tried to get it instantly, no one talks to me and ended up the call after 10-15 seconds. Tried like 10-15 calls and still unable to get Apple support to talk to me. What am i supposed to do to get Apple support me through phone number or email? They literally ignore me. Anyone know what is the best way to contact them?

I have the bearer token of a user after a successful "Sign In with apple" procedure.

Hi community, How can I refresh or make the contact images on iMessage be all the time sync with the Contact app? At the moment they don't have been showing or updated from the Contact app or the iPhone. I have this problem since the last Mac OSX version not just the Beta version.

Hi, I want to display the contact card of the current user with a CNContactViewController. I'm wondering how I can retrieve only the contact info of the current user. I was thinking of filtering through the contacts using NSFullUserName(), but the user could have changed their contact name to something other than their username. Is there a way to get the contact info of just the current user?

I wanted to access the users contacts from within my SwiftUI app. Unfortunately, the statement: import ContactsUI Produces the following error: No such module ‘ContactsUI’ Should I be able to import this module?