I've linked my contacts app on my iPhone to my company contacts database, and it shows up in the contacts app as "My Company Global Address List", and I can tap on it and search within it. However using CNContactFetchRequest doesn't retrieve any of those contacts, is it something that's possible to do, if so how?

Without exception, every single code example/tutorial for adding a contact group uses a nil container value i.e. the toContainerWithIdentifier parameter is nil, as below. I've not been able to find an example usage where it isn't nil. let group = CNMutableGroup() group.name = "whatever" let saveRequest = CNSaveRequest() saveRequest.add(group, toContainerWithIdentifier: nil) do { try store.execute(saveRequest) } catch { handle error } I've been running this code and 99.9% of the time it works as expected. However on one handset the catch is being executed with Error Domain=CNErrorDomain Code=207 "Container is read-only" How should I deal with this? How can I find out what container it is being added to? Why would it be read only? If nil means add to the default container, why is the default container in this case read only? How can I change the code that it will always run on every device? I've not been able to find any examples/tutorials for creating a custom container to which the group can be added.

using an xcframework supplied by 3rd party. I can build/run/install the app and use the framework without issue when running/installing from Xcode. However if I create an archive and then attempt to upload it to TestFlight I get two errors, the first is: CFBundelIdentifer Collision. There is more than one bundle with the CFBundelIdentifer value bundleidofframework under the application And the second is Invalid Bundle. The bundle at ...myextension.appex contains disallowed file Frameworks. (I'm using the framework within both the app and an extension) Within the embed frameworks section of Xcode, the tickbox code sign on copy is ticked (that's the default value and if its unticked then the app doesn't run when installed directly via Xcode).

In the past I've used lipo to remove unwanted architectures from fat frameworks, using lipo -remove. However when attempting to do similarly with a .xcframework I keep getting errors, its not just the -remove command. If for example I run lipo -info someFramework.xcframework then the error is: can't map input file: someFramework.xcframework (Invalid argument) if I cd into the xcframework and run lipo -remove ios-arm64_x86_64-simulator then the error is unknown architecture specification flag: ios-arm64_x86_64-simulator in specifying remove operation: -remove ios-arm64_x86_64-simulator

With Xcode 15 if you attach an iPhone (with iOS 17 installed) and then select Window|Devices & Simulators, then you can see the connected iPhone of the left hand side of the organizer. However with the iPhone selected, when the Open Console button is clicked it doesn't launch the console for the phone but instead for the Mac. There's therefore no way to view the handset logs (you can see the app logs within Xcode as per usual, but you can't view the holistic handset logs).

On my iPhone, in Settings, I've added my company Exchange account. Consequently, within the Contacts app, 4 new lists appear - the bottom as shown in the attached image. There's a few thousand contacts in the Company Exchange account, so why are the count values showing as 0? If I click on the Global Address list and search, it can succfully find whatever I search for. I want to programatically retrieve the contacts within the Exchange account, in addition to those stored locally or within iCloud, however if I execute the following code, for the container of type exchange, the count of results of the call to unifiedContacts() is 0. How can I programatically get the Exchange contacts? If the call to unifiedContacts() is resulting in 0 because the count for the lists when viewing the Contacts app is 0, then how to make it not 0 in the Contacts app (but if that were the case, how come manually searching for a contact is successful?) let keysToFetch = [ CNContactFormatter.descriptorForRequiredKeys(for: .fullName), CNContactPhoneNumbersKey, CNContactEmailAddressesKey, CNContactThumbnailImageDataKey] as [Any] var allContainers: [CNContainer] = [] do { allContainers = try CNContactStore().containers(matching: nil) } catch { print("Error fetching containers") } var results: [CNContact] = [] for container in allContainers { let type = container.type let identifier = container.identifier let fetchPredicate = CNContact.predicateForContactsInContainer(withIdentifier: container.identifier) do { let containerResults = try CNContactStore().unifiedContacts(matching: fetchPredicate, keysToFetch: keysToFetch as! [CNKeyDescriptor]) let count = containerResults.count results.append(contentsOf: containerResults) } catch { print("Error fetching containers") } }

My app has several app extensions and I'd like to be able to unify the logging between them such that they write to a single shared file (which can be read from and subsequently uploaded to things like Crashltyics or Bugsnag etc.) Its possible to log directly to things like Crashlytics, however none of them I've investigated have a unified approach for the app and extensions (for example, if you use Crashlytics you have to configure the app and the extensions separately, so any logging goes to two entirely separate consoles.) Hence, instead I'm wondering if there a library that provides the ability to log to a file, and that file can be shared and simultaneously written to (in the case where the app and its extensions are running simultaneously). Do any of the existing log libraries for iOS have this ability?

If there is the following code for a notification service extension var countOfInvocations = 0 public class NotificationService: UNNotificationServiceExtension { public override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) { NSLog("Push count: \(countOfInvocations)") countOfInvocations = countOfInvocations + 1 Then if pushes are sent to the handset it can be observed in the console log that the value of countOfInvocations keeps increasing, meaning the NotificationService class is getting instantiated and destroyed within the same process. However at what point does that process get torn down by the OS? It seems to be kept alive for about 10 minutes or so. Is there a way the extension can detect its the same or a new process?

I've got a complex app extension and I'd like to be able to combine the logging from the app and the extension into a single file (for extraction/uploading etc.) I experimented adding the following code to both the app and the extension i.e. using the same subsystem for both app and extension logging. let subsystem = "mySubsystem" let logger = Logger(subsystem: subsystem, category: "main") logger.info("Log from within extension") // the version in the app says Log from within app do { let logStore = try OSLogStore(scope: .currentProcessIdentifier) let oneHourAgo = logStore.position(date: Date().addingTimeInterval(-3600)) let allEntries = try logStore.getEntries(at: oneHourAgo) let filtered = allEntries .compactMap { $0 as? OSLogEntryLog } .filter { $0.subsystem == subsystem } } The filtered content only contains logging from either the app or the extension. I suppose the issue might be the use of .currentProcessIdentifier as the scope, however that's the only scope that is defined. Is what is being attempted here possible? Is there any way to write to and extract a unified log for an app and app extension? If not, how about adding it, surely this would be something useful for people to be able to do

In WWDC 2016 Session 230 (https://wwdctogether.com/wwdc2016/230) they show the incoming Voip call screen (at time 02.59) with an image covering the entire call screen. How is that achieved?

The previous betas have all been ok, but beta 6 is for me totally and utterly unusable because it keeps hanging forever during the installation and attaching phases when trying to run an app (attached physically via cable, not bluetooth). The first time or two of making a code change, then running, its ok, but then its guaranteed to hang eventually, it gets stuck on the "Installing app to iPhone" phase. If I restart the phone and try again it might get past that, but then it just gets stuck on "Waiting to attach to app on iPhone" phase. I know its beta software and not expected to be perfect, but its unusable and previous beta versions are no longer available to rollback to. Has anybody encountered this before and knows of any tricks to get it to stop hanging and load/run the app? (Restarting Xcode, restarting the phone, re-building, does not fix it for me)

My goal is to try and get a unified logging system set up where logging from an iOS app and its extensions (primarily a notification service extension) get written into one central repository. So I was planning on setting up CocoaLumberjack in the app and the extension to use the same file path/name, adding the group capability to the app and the extensions and specifying the shared group directory as the file path. By default, for an app, CocoaLumberjack writes its files to: var/mobile/Containers/Data/Application/05464D4A-20F6-4E1F-9DBC-3109C053A1E8/Library/Caches/Logs/ On a Mac using an application such as iExplorer the above file and be located and viewed and copied etc. For an extension, it writes them to: /var/mobile/Containers/Data/PluginKitPlugin/5542F5EA-EB3A-4728-B33E-4E57C1B7B3B4/Library/Caches/Logs/ Now if I configure Cocoalumberjack to instead write the logger file to the shared group directory, then that will be at: /private/var/mobile/Containers/Shared/AppGroup/6CD5AF2C-54C9-46EF-B831-997B1DD6664F/ However its not possible using iExplorer to access this location. Using a Mac connected to the iPhone, is there an app or tool etc., that will enable me to locate the log file if it's created in the above AppGroup location?

I'm getting loads of these appearing in my console, I can't find anything for it from googling. What does it mean?

I've gone through several tutorials, and the documentation, it seems there's no way to adjust the logging level dynamically, or even at build time for that matter. i.e. there is apparently nothing that exists such as: static let logger = Logger(subsystem: subsystem(), category: category()) logger.setMinimalLevel(.Warning) logger.trace("I won't get displayed because minimal level is debug") Am I mistaken and there is something like this?

In the console app, there is an option to turn on/off the displaying of Info and Debug message levels: However I don't see an equivalent to do likewise with Xcode's console. Is there one?