I’m trying to determine the actual Wi-Fi band (e.g. 2.4GHz, 5GHz, or 6GHz) of the network that is currently connected on macOS. I’m not looking for a heuristic based on the Wi-Fi name (SSID), such as checking whether it contains “5G” or “6G”. Instead, I want a reliable and accurate method that reflects the real connection parameters reported by the system. Specifically, I’m interested in: Whether macOS exposes the current Wi-Fi band or channel information through public APIs (e.g. CoreWLAN) Or if there is any supported system-level way to retrieve this information programmatically If this information is not directly accessible, I’d also like to understand: Why macOS does not expose it And whether there is a recommended alternative approach Any insights or examples would be greatly appreciated.

My team has developed an app with a biref Matter commissioner feature using the Matter framework on the MatterSupport extension. Our app support iOS and Android. However, we ran into a problem that the control certificate generated by the iOS app could not control the device on the Android side. And the control certificate generated by the Android app could not control the device on the iOS side. The Matter library used by Android is compiled by connectedhomeip. Does anyone have the same problem as us? How to solve this? Thank you

My app is in the final stages of testing for release in two days. We did a preorder campaign, and implemented a preorder bonus by checking the preorderDate field returned from the verification result returned by the AppTransaction.shared. This worked well at the time of implementation and initial testing. Now, our QA team is reporting that the preorder bonus is not popping up for them, and we have confirmed it on the developer side that the StoreKit back end is no longer returning a valid preorderDate even though the app is clearly preordered when you check it on the app store. The developer accounts are in the US and App Store Connect clearly shows the US status as preorder. Are there any circumstances where preorderDate might be nil even if the user's app store shows preorder? Any other way we can proceed here? We can message our users that we are going to have to delay a preorder bonus on iOS, but eventually we need to get to a solution that doesn't involve us entering in all our iOS preorders by hand to give them a bonus item.

When I've tried to use UIDevice on my Mac running my Catalyst application, testing code UIDevice *d=UIDevice.currentDevice; for (NSString *k in @[@"name", @"systemName", @"systemVersion", @"model", @"localizedModel"]) NSLog(@"%@ -> %@", k, [d valueForKey:k]); to my great surprise I am getting name -> iPad systemName -> iPadOS systemVersion -> 26.3 model -> iPad localizedModel -> iPad What the. How do I determine the real values? Thanks!

Hi there, I have an SwiftUI app that opens a user selected audio file (wave). For each audio file an additional file exists containing events that were extracted from the audio file. This additional file has the same filename and uses the extension bcCalls. I load the audio file using FileImporter view modifier and within access the audio file with a security scoped bookmark. That works well. After loading the audio I create a CallsSidecar NSFilePresenter with the url of the audio file. I make the presenter known to the NSFileCoordinator and upon this add it to the FileCoordinator. This fails with NSFileSandboxingRequestRelatedItemExtension: Failed to issue extension for; Error Domain=NSPOSIXErrorDomain Code=3 "No such process" My Info.plist contains an entry for the document with NSIsRelatedItemType set to YES I am using this kind of FilePresenter code in various live apps developed some years ago. Now when starting from scratch on a fresh macOS26 system with most current Xcode I do not manage to get it running. Any ideas welcome! Here is the code: struct ContentView: View { @State private var sonaImg: CGImage? @State private var calls: Array<CallMeasurements> = Array() @State private var soundContainer: BatSoundContainer? @State private var importPresented: Bool = false var body: some View { VStack { Image(systemName: "globe") .imageScale(.large) .foregroundStyle(.tint) Text("Hello, world!") if self.sonaImg != nil { Image(self.sonaImg!, scale: 1.0, orientation: .left, label: Text("Sonagram")) } if !(self.calls.isEmpty) { List(calls) {aCall in Text("\(aCall.callNumber)") } } Button("Load sound file") { importPresented.toggle() } } .fileImporter(isPresented: $importPresented, allowedContentTypes: [.audio, UTType(filenameExtension: "raw")!], onCompletion: { result in switch result { case .success(let url): let gotAccess = url.startAccessingSecurityScopedResource() if !gotAccess { return } if let soundContainer = try? BatSoundContainer(with: url) { self.soundContainer = soundContainer self.sonaImg = soundContainer.overviewSonagram(expectedWidth: 800) let callsSidecar = CallsSidecar(withSoundURL: url) let data = callsSidecar.readData() print(data) } url.stopAccessingSecurityScopedResource() case .failure(let error): // handle error print(error) } }) .padding() } } The file presenter according to the WWDC 19 example: class CallsSidecar: NSObject, NSFilePresenter { lazy var presentedItemOperationQueue = OperationQueue.main var primaryPresentedItemURL: URL? var presentedItemURL: URL? init(withSoundURL audioURL: URL) { primaryPresentedItemURL = audioURL presentedItemURL = audioURL.deletingPathExtension().appendingPathExtension("bcCalls") } func readData() -> Data? { var data: Data? var error: NSError? NSFileCoordinator.addFilePresenter(self) let coordinator = NSFileCoordinator.init(filePresenter: self) NSFileCoordinator.addFilePresenter(self) coordinator.coordinate(readingItemAt: presentedItemURL!, options: [], error: &error) { url in data = try! Data.init(contentsOf: url) } return data } } And from Info.plist <key>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeExtensions</key> <array> <string>bcCalls</string> </array> <key>CFBundleTypeName</key> <string>bcCalls document</string> <key>CFBundleTypeRole</key> <string>None</string> <key>LSHandlerRank</key> <string>Alternate</string> <key>LSItemContentTypes</key> <array> <string>com.apple.property-list</string> </array> <key>LSTypeIsPackage</key> <false/> <key>NSIsRelatedItemType</key> <true/> </dict> <dict> <key>CFBundleTypeExtensions</key> <array> <string>wav</string> <string>wave</string> </array> <key>CFBundleTypeName</key> <string>Windows wave</string> <key>CFBundleTypeRole</key> <string>Editor</string> <key>LSHandlerRank</key> <string>Alternate</string> <key>LSItemContentTypes</key> <array> <string>com.microsoft.waveform-audio</string> </array> <key>LSTypeIsPackage</key> <integer>0</integer> <key>NSDocumentClass</key> <string></string> </dict> </array> Note that BatSoundContainer is a custom class for loading audio of various undocumented formats as well as wave, Flac etc. and this is working well displaying a sonogram of the audio. Thx, Volker

Hi there, How can I best understand the changes on the eSIM Installation wizard, i.e. on iOS 18 and later after an eSIM installation you used to get steps such as labeling the eSIM, deciding what to use for iMessage & FaceTime, what to use for mobile data, main voice line, etc. Whereas on iOS 26 you are not prompted for these steps.

Which HomeKit API serves for the Home application scene (HMActionSet)-related functionality “Remove from Home View” and “Add to Home View”? There must be a public API for that, for at the very least one 3rd party application shows/hides scenes appropriately as they are set up in Home; nevertheless, whatever I try, I can't find the API. Thanks!

As the title states, I’ve been trying to emulate some older Direct9 games, and rosetta can’t handle it because of that https://github.com/WineAndAqua/rosettax87 I’ve had to use this, but it really seems like something that I shouldn’t have to do I’ve tried Wineskin, wine, D9VK, MoltenVK, GPTk, and the only thing that’s close to working is using devel wine + d9vk with the xrosetta87 running like its a VPN, and then you play Without xrosetta87 it’s 0-0.5 FPS? with it, it’s like a buttery smooth 60+

There is a conflict in SwiftData (specifically when synced with CloudKit) when a @Model attribute shares the same name as a case within its assigned enum type. When this occurs, accessing the attribute on a model instance consistently returns the value corresponding to the enum case name, rather than the actual value persisted in the database. Steps to Reproduce Define an enumeration (e.g., Status) with a case that matches a planned property name (e.g., case status). Create a SwiftData @Model that uses this enum. Name the property in the model the same as the enum case. Attempt to save and then retrieve the value. Example Code enum TaskStatus: String, Codable { case status // The conflict source case pending case completed } @Model class TodoItem { // Conflict: Property name matches enum case name var status: TaskStatus init(status: TaskStatus) { self.status = status } } Expected Behavior The property item.status should return the value stored in the database (e.g., .pending or .completed). Actual Behavior The property item.status consistently resolves to the enum case .status, ignoring the actual persisted data.

How should i write and not show this sensitive error?

Hey there, I’m wondering if there is a CRUD API for Apple Notes? I just saw once that it’s possible through a Apple Script on Mac. But the problem for me is that the app should also run on iOS. Does someone have an idea how to approach this?

Hello! We develop a SAS driver and a service application for DAS devices. When users in our application create a RAID array on the device: On the 1st step, our dext driver mounts a new volume. At this step DiskUtil automatically tries to mount it. As there is no file system on the new volume - the MacOS system popup appears "The disk you attached was not readable by the computer" On the 2nd step our application creates the file system on this new volume. So we do not need this MacOS system popup to appear (as it may frustrate our users). We found a way to disable the global auto mount but this solution also impacts on other devices (which is not good). Are there any other possibilities to prevent the popup "The disk you attached was not readable by the computer" from appearing?

Summary On Mac Studio systems (no built-in camera), macOS does not initialize camera services after a normal reboot if no physical camera is present. As a result, Continuity Camera does not appear anywhere in the system. Observed behavior System Information → Camera reports “No video capture devices were found.” Continuity Camera (iPhone) is completely absent from camera lists. Plugging in any USB UVC webcam immediately initializes camera services and causes both the USB camera and the iPhone (Continuity Camera) to appear. The USB camera can then be unplugged and Continuity Camera continues working until the next reboot. Reproduction steps Use a Mac Studio (no built-in camera) on recent macOS. Ensure no USB webcam or external camera is connected. Reboot the Mac normally. After login, open System Information → Camera. Expected Camera services should initialize even when no physical camera is present, allowing Continuity Camera to be available as the primary camera. Actual No camera devices are present unless a physical USB camera is connected at least once after boot. This reproduces 100% of the time on Mac Studio and appears to be a camera service bootstrap issue where Continuity Camera cannot be the first camera device. Issue has been filed via Feedback Assistant.

In a class, I call the following (edited to simplify, but it matches the real case). If I do this: func getData() -> someClass? { _ = someURL.startAccessingSecurityScopedResource() if let data = NSData(contentsOf: someURL as URL) { do { let unarchiver = try NSKeyedUnarchiver(forReadingFrom: data as Data) print((unarchiver.decodeObject(of: [NSArray.self, someClass.self /* and few others*/], forKey: oneKey) as? someClass)?.aProperty) if let result = unarchiver.decodeObject(of: [NSArray.self, someClass.self /* same other types*/], forKey: oneKey) as? someClass { unarchiver.finishDecoding() print("unarchived success") return result } else { unarchiver.finishDecoding() print("unarchiving failed") return someClass() } } catch { return nil } } I get a failure on log : unarchiving failed But if I comment out the print(unarchiver.decodeObject) - line 8, it works and I get unarchived success // print((unarchiver.decodeObject(of: [NSArray.self, someClass.self /* and few others*/], forKey: oneKey) as? someClass)?.aProperty) However, when I do exactly the same for another class (I've compared line by line to be sure), it works even with the print statement. What could be happening here ?

We are developing a macOS VPN application using NEPacketTunnelProvider with a custom encryption protocol. We are using standard On-Demand VPN rules with Wi-Fi SSID matching but we want to add some additional feature to the native behaviour.  We want to control the 'conenect/disconnect' button status and allow the user to interact with the tunnel even when the on demand rule conditions are satisfied, is there a native way to do it? In case we need to implement our custom on-demand behaviour we need to access to this information: connected interface type ssid name and being informed when it changes so to trigger our logic, how to do it from the app side? we try to use CWWiFiClient along with ssidDidChangeForWiFiInterface monitoring, it returns just the interface name en0 and not the wifi ssid name. Is location access mandatory to access wifi SSID on macOS even if we have a NEPacketTunnelProvider? Please note that we bundle our Network Extension as an App Extension (not SystemExtension).

We’re developing an enterprise VPN client for macOS using NetworkExtension (PacketTunnelProvider) with Always-On / On-Demand VPN, deployed via MDM. On macOS 14.x and 15.x we observe the following log message from nesessionmanager: nesessionmanager: NESMVPNSession[...] Resetting VPN On Demand This most commonly occurs after sleep → wake. After this happens, the VPN no longer reconnects automatically, even though isOnDemandEnabled remains true and On-Demand rules are still present. Then a manual user action is required to reconnect. Questions: Is the “Resetting VPN On Demand” log message expected during sleep/wake transitions? Under what conditions does macOS reset On-Demand VPN state? Is there a supported way to detect or recover from this state programmatically? Any guidance on expected behavior or best practices would be appreciated.

Dear Apple Engineers, I am using NFCNDEFReaderSession to read information from NFC tags. When calling the begin method of the session, a system dialog/popover appears at the bottom of the screen. Is it possible to suppress or disable this dialog? Thank you for your assistance. Here is my demo code： @IBAction func beginScanning(_ sender: Any) { guard NFCNDEFReaderSession.readingAvailable else { let alertController = UIAlertController( title: "Scanning Not Supported", message: "This device doesn't support tag scanning.", preferredStyle: .alert ) alertController.addAction(UIAlertAction(title: "OK", style: .default, handler: nil)) self.present(alertController, animated: true, completion: nil) return } session = NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: true) session?.alertMessage = "Hold your iPhone near the item to learn more about it. session?.begin() }

Dear Apple Engineers： My app utilizes the App Clip experience. I would like to prevent the App Clip card from appearing when the host app is running in the foreground. How can this be achieved? I have observed that Alipay (in China) does not display an App Clip card when the device is tapped against a tag while the app is in the foreground, which indicates that this behavior is possible. Thank you for your assistance.

I decode an object with NSKeyedArchiver (SecureCoding): typealias BoolArray = Array<Array<Bool>> let val = decoder.decodeObject(of: NSArray.self, forKey: someKey) as? BoolArray I get the following log: *** -[NSKeyedUnarchiver validateAllowedClass:forKey:] allowed unarchiving safe plist type ''NSNumber' (0x204cdbeb8) [/System/Library/Frameworks/Foundation.framework]' for key 'NS.objects', even though it was not explicitly included in the client allowed classes set: '{( "'NSArray' (0x204cd5598) [/System/Library/Frameworks/CoreFoundation.framework]" )}'. This will be disallowed in the future. I changed by adding NSNumber.self in the list : let val = decoder.decodeObject(of: [NSArray.self, NSNumber.self], forKey: someKey) as? BoolArray No more warning in log. Is there a reason for this ?

I’m hitting a specific edge case with background execution that I can’t figure out. I'm using Flutter for the UI, but all the logic handles are in Swift using CoreBluetooth and CoreLocation. I need the app to wake up from a suspended state when it detects my specific BLE peripheral (OBD sensor), connect to it, and immediately start continuous location tracking for the duration of the drive. If I start this process while the app is in the foreground, or very shortly after going to BG, it works perfectly. The app stays alive for the whole trip. The issue only happens when the sequence starts from the background: The app is suspended. scanForPeripherals wakes the app when the sensor is found. In didDiscover, I immediately call locationManager.startUpdatingLocation(). locationd actually delivers updates successfully. However, 5-15 minutes later, iOS suspends the app again. Crucially, I never see the blue "Location In Use" pill on the status bar, even though I have showsBackgroundLocationIndicator = true set. Also, distance filter is set to None. Logs for reference (around suspending) locationd: {"msg":"Sending location to client","Client":"[appName]:","desiredAccuracy":"-1.000000"} runningboardd: Invalidating assertion ... from originator \\\[osservice<com.apple.bluetoothd>:...\\\] runningboardd: Removed last relative-start-date-defining assertion for process app<[appName]...> runningboardd: Calculated state ... running-suspended runningboardd: Suspending task locationd: Client [appName]: disconnected bluetoothd: State of application "[appName]" is now "suspended" Questions Why does invalidating the Bluetooth assertion cause an immediate suspend even though I called startUpdatingLocation() and am receiving updates? Does the missing blue location pill imply that the OS never fully "accepted" the location session? Is there a specific "handshake" required to transition from a BLE wake-up to a long-running location session? I'm wondering if I need to use a background task identifier to bridge the gap between the BLE wake and the location manager taking over. More context: Digging deeper in the comments, I just noticed the following patterns when the application is not suspended vs when it is recently suspended and got awaken by a BLE event. Not suspended: 303948:Jan 23 20:59:35.640118 locationd[6491] <Debug>: {"msg":"Client is setting ContinuousBackgroundLocationRequested", "Client":"[appName]:", "ContinuousBackgroundLocationRequested":1} 303949:Jan 23 20:59:35.640155 locationd[6491] <Debug>: {"msg":"Allowing process assertion due to foreground-ish status", "ClientKeyPath":"[appName]:"} Recently suspended and awaken by BLE: 564296:Jan 23 21:00:23.179125 locationd[6491] <Debug>: {"msg":"Client is setting ContinuousBackgroundLocationRequested", "Client":"[appName]:", "ContinuousBackgroundLocationRequested":1} 564298:Jan 23 21:00:23.179195 locationd[6491] <Notice>: {"msg":"#Warning Denying process assertion", "ClientKeyPath":"[appName]:"} The assertion fails for the second case and that's why the app could not persist. Most importantly, following the logs in the second case, I see the following: locationd[6491] <Notice>: {"msg":"computing freshAuthorizationContext", "Client":"[appName]:", "ClientDictionary":"{\n AlwaysServiceSession = 0;\n I suspect that the flag AlwaysServiceSession being 0 has to do with process assertion being denied for location.