I want to get the barometric pressure reading from the built-in barometer to display it in my iOS app. When I use CMAltimeter.startRelativeAltitudeUpdates(), my app receives no relative altitude update events, which means I can't view the barometric pressure from the sensor (because that's only contained in CMAltitudeData, not CMAbsoluteAltitudeData. If I use CMAltimeter.startAbsoluteAltitudeUpdates(), I get absolute altitude update events every second or so. NSMotionUsageDescription is set. I have tried the following things, all of which haven't worked: Only calling startRelativeAltitudeUpdates() and not startAbsoluteAltitudeUpdates() Calling CMSensorRecorder.recordAccelerometer(forDuration: 0.1), as suggested in this thread Calling CMMotionActivityManager.queryActivityStarting(from: .now, to: .now, to: .main), as suggested here Physically moving my iPhone up and down about 200 feet using an elevator; I see absolute altitude updates which are in line with what's expected, but still receive no relative altitude update events Calling the same APIs in a watchOS app on an Apple Watch Series 10; I see much less frequent absolute altitude updates, and still no relative altitude updates I know the barometer sensor is working, because when I move my iPhone up and down even a foot or two indoors, I see an immediate change in the absolute altitude reading that I know wouldn't come from GPS. This example code, when run on my iPhone 16 Pro running iOS 18.1.1, prints updates started and then updating absolute every second, but doesn't print anything else. The absolute altitude, accuracy, and authentication status fields update (and the auth status shows 3, indicating .authorized), but the relative altitude and pressure fields remain as --. struct ContentView: View { @State private var relAlt: String = "--" @State private var relPressure: String = "--" @State private var absAlt: String = "--" @State private var precision: String = "--" @State private var accuracy: String = "--" @State private var status: String = "--" var body: some View { VStack { Text("Altitude: \(relAlt) m") .font(.title3) Text("Pressure: \(relPressure) kPa") .font(.title3) Text("Altitude (absolute): \(absAlt) m") .font(.title3) Text("Precision: \(precision) m") .font(.title3) Text("Accuracy: \(accuracy) m") .font(.title3) Text("Auth status: \(status)") .font(.title3) } .padding() .onAppear { let altimeter = CMAltimeter() startRelativeBarometerUpdates(with: altimeter) startAbsoluteBarometerUpdates(with: altimeter) status = CMAltimeter.authorizationStatus().rawValue.formatted() print("updates started") } } private func startRelativeBarometerUpdates(with altimeter: CMAltimeter) { guard CMAltimeter.isRelativeAltitudeAvailable() else { relAlt = "nope" relPressure = "nope" return } altimeter.startRelativeAltitudeUpdates(to: .main) { data, error in if let error = error { print("Error: \(error.localizedDescription)") return } if let data = data { print("updating relative") relAlt = String(format: "%.2f", data.relativeAltitude.doubleValue) relPressure = String(format: "%.2f", data.pressure.doubleValue) } else { print("no data relative") } } } private func startAbsoluteBarometerUpdates(with altimeter: CMAltimeter) { guard CMAltimeter.isAbsoluteAltitudeAvailable() else { absAlt = "nope" print("no absolute available") return } let altimeter = CMAltimeter() altimeter.startAbsoluteAltitudeUpdates(to: .main) { data, error in if let error = error { print("Error: \(error.localizedDescription)") return } if let data = data { print("updating absolute") absAlt = String(format: "%.2f", data.altitude) precision = String(format: "%.2f", data.precision) accuracy = String(format: "%.2f", data.accuracy) } } } } Is this behavior expected? How can I trigger delivery of relative altitude updates to my app?

I'm trying to figure out how to make an inverted list in my watchOS app for a message view, so that messages appear from the bottom first, and go up. Everything I've tried so far has some sort of major drawback, and I'm wondering if there's some proper way to do it. My current implementation is flipping every message item upside-down, then flipping the whole list upside-down. This works in making the list go from bottom to top, but the digital crown scroll direction is also inverted. Simply inverting the array of messages doesn't work either, as the user has to scroll to the bottom of the list manually every time. Any tips/suggestions would be greatly appreciated.

I have downloaded Xcode 16.1 and after the first run it downloaded 18.1 simulator and then watchOS 11.1 Simulator. Then I suppose it detected my watch 7 with OS 8.1 and wanted to download symbols for it but then it failed with 403 error. Any way to do it some other way?

Hi, I am new to swift and IOS development, I was developing an app which can be used to communicating between Apple Watch and iPhone. Something strange occurred when I was trying to observe the status of the message(UserInfo) sent by func transferUserInfo(_ userInfo: [String : Any] = [:]) -> WCSessionUserInfoTransfer. I was trying to observe isTransferring(a boolean value) in WCSessionUserInfoTransfer which was returned by the function mentioned above, but it seems cannot be updated even if the message queue was empty, it seems to always be True. Here is my sample code: let transfer = session.transferUserInfo(message) if transfer.isTransferring { Timer.scheduledTimer(withTimeInterval: 0.5, repeats: true) { timer in print("Queued message count: \(self.session.outstandingUserInfoTransfers.count), isTransferring:\(transfer.isTransferring)") if !transfer.isTransferring { timer.invalidate() // irrelevant codes... } } } else { // other irrelevant codes... } Appreciate if anyone can help me out of this problem. Best wishes.

Hi. I’m not sure where to post it, but after 1.5 years with the AWU2 the main Watch face is still bugged, missing seconds (two digit) in format. In the attached example it shows “06:30:5” for 10 seconds until it hits ”06:31:00”. I’m not sure if it’s only related to Danish AWU’s. But it is so annoying, and has forced me to change watch to Garmin in the past. PLEASE FIX IT, please please.

First post here! Is there a way to reduce the number of haptic feedback for double tap on primary button? Context: Double tap is awesome. Two haptic actuations are given to the gesture to let the user know that the gesture is "received" then a third haptic feedback is given shortly after to signal the primary button is tapped. Is there a way to disable the third haptic feedback. In other words make primary action "silent"? I have tested a number of apps that supports double tap, it seems to me that the triple tap is a system level default, and it cannot be changed. Any help would be greatly appreciated.

We are seeing an issue where sending data using the asynchronous method HKWorkoutSession.sendToRemoteWorkoutSession(data: Data) will never return in some cases (no success nor failure). This issue is happening for roughly 5% of Workouts started and will stay broken for the whole workout. The other 95% of the workouts, the connection works flawlessly. This happens on both watchOS 10 and 11, and with phones running iOS 17 or 18. The issue is quite random and not reproducible. Our app has thousands of workouts a day that use the workout session workout data send, with constant messages being send every few seconds. In some of those 5% cases the "sendToRemoteWorkoutSession" will throw way later, like 30+ minutes later, if the watch app is awake long enough to capture a log of a failure. Our code uses the same flow as in the sample project: https://developer.apple.com/documentation/healthkit/workouts_and_activity_rings/building_a_multidevice_workout_app Here is some sample code, which is pretty simple. Setup code: let workoutSession = try HKWorkoutSession(healthStore: healthStore, configuration: configuration) workoutSession.delegate = self activeWorkoutSession?.startMirroringToCompanionDevice { success, error in print("Mirroring started on companion device: \(success), error: \(error)") } workoutSession?.prepare() then later we send data using the workout session: do { print("Will send data") try await workoutSession.sendToRemoteWorkoutSession(data: data) print("Successfully sent data") // This nor the error may be called after waiting extensive amounts of time } catch { print("Failed to send data, error: \(error)") // This nor the success may be called after waiting extensive amounts of time } So far, the only fix is to restart the phone and watch at the same time, which is not a great user experience. Is anyone else seeing this issue? or know how to fix this issue?

Exploring Live Activity feature for Apple Watch right now and found that it has this default view with "Open on iPhone" button when you tap Live Activity. That button perfectly brings iOS app to foreground as if you tapped iOS's Live Activity. Is there a way to mimic that behavior from inside Watch app code? From inside WKApplicationDelegate, for example Tried openSystemURL but it seems lile it's only available for tel or sms links

I developed a watchOS app to capture gyro data, save it in real-time as a CSV file, and send it to an iOS app. However, when I start writing with the watch on, the screen dims, and it stops working. It only resumes operation when I tap the screen again. Is there a way to let it run in the background and transmit files in real-time, even when the screen is off?

I’m relatively new to SwiftUI, so I’ve got a pretty basic question here. In my watchOS app, I’m using ShareLink to share a string of text to the Mail and Messages apps. Mail shows up in the ShareLink sheet just fine, but Messages doesn’t appear. What’s odd is that when I run the app in Xcode’s preview or in the Simulator, Messages does show up as a sharing option… So now I’m wondering if this is just a quirk with my device or if Apple doesn’t actually support sharing text to Messages from third-party watchOS apps yet? I know some Apple Watch apps (like Contacts) do support sending text/files to Messages, so I’m curious if anyone’s had a similar experience or knows more about this. Any insights would be super helpful!

Hello i am trying to install in my apple watch Ultra the soft : Water Minder but i have this message : "com.waterminder.watermin-der.watchkitapp" Cannot Be Installed »! why?

Has anyone else noticed that there are two different volume levels now ? When I call for an advisor, the IVR (AI introduction sounds fine. When the advisor or any other call speaks, i'ts so low I have to put it to my ear.

I'm unable to pair my Apple Watch Ultra (watch os 11.1 GA) onto Ios 18.2 beta 2 (had same issue with beta 1). I get a Phone out of date Error and was wondering if someone had a workaround. I tried backing up my phone, restoring on a 18.1 GA phone and tried to pair there (in hopes of later restoring backup on 18.2 b2) but I got the same error on 18.1 after the restore; I'm guessing somewhere in the backup it incorrectly restores the iOS version. I am able to pair watch on a non restored 18.1. HELP!

Hello, Our watchOS App users on Apple Watch3 are experiencing crashes. PROBLEM only happens in production/testflight apps. app crashes immediately on launch if I build the app in Apple Watch3 device from a local machine, the app runs fine. app runs fine on an Apple Watch3 simulator What could possibly cause crashes only on Production/TestFlight while working fine on local builds? Any advice about what I could do to narrow down the cause would be greatly appreciated. THINGS I'VE TRIED Tried disabling Dead Code Stripping option in the Build Settings without any success. ENVIRONMENT Apple Watch 3, most of them on watchOS 8.8.1(19U512) our App is in SwiftUI our App's minimum supported OS version is watchOS 8.0 Thank you.

Hi, I'm making a WatchKit game app with SpriteKit and Objective-C, and I'm encountering an annoyance where system gestures, namely long-pressing the top and bottom edges to pull Notification/Control Center, interfere with the controls of the game. In iOS, this can be mitigated by using overriding preferredScreenEdgesDeferringSystemGestures in UIViewController, but I couldn't find any equivalent API in any WatchKit class, and searching for similar symbols only yielded a single private API (-[_UISystemAppearanceManager screenEdgesDeferringSystemGestures]) that isn't ever called on watchOS. Any idea how to achieve a similar effect on watchOS?

Our company has developed a product available, which measures body composition. During the measurement process, lasting 40 seconds, we require the device screen to remain illuminated. We are actively using the "Always On" feature and have set the timer on the watch to 70 minutes to prevent the screen from dimming. However, we are encountering issues where the screen may still turn off during the measurement. Could you please provide guidance on how to keep the screen active with backlighting across all Apple Watch models during measurements?

Hello, since the last version of iOS and WatchOS I have a problem with this code. This is the minimal version of the code, it have two pickers inside a view of a WatchOS App. The problem its with the focus, I can't change the focus from the first picker to the second one. As I said before, it was working perfectly in WatchOS 10.0 but in 11 the problems started. struct ParentView: View { @FocusState private var focusedField: String? var body: some View { VStack { ChildView1(focusedField: $focusedField) ChildView2(focusedField: $focusedField) } } } struct ChildView1: View { @FocusState.Binding var focusedField: String? @State private var selectedValue: Int = 0 var body: some View { Picker("First Picker", selection: $selectedValue) { ForEach(0..<5) { index in Text("Option \(index)").tag("child\(index)") } }.pickerStyle(WheelPickerStyle()).focused($focusedField, equals: "first") } } struct ChildView2: View { @FocusState.Binding var focusedField: String? @State private var selectedValue: Int = 0 var body: some View { Picker("Second Picker", selection: $selectedValue) { ForEach(0..<5) { index in Text("Option \(index)").tag("childTwo\(index)") } }.pickerStyle(WheelPickerStyle()).focused($focusedField, equals: "second") } } When you do vertical scrolling on the second picker, the focus should be on it, but it dosnt anything. I try even do manually, setting the focusState to the second one, but it sets itself to nil. I hope that you can help me, thanks!

Hello, WatchOS crown not producing any effects in Preview window of Xcode. I tried lower version (10.5) and currently using 11.0 . I tried different faces, sizes, models but none is working, even though it rotates beautifully in preview. Thanks,

On iPhone, we can use iBeacon to wake up the APP in the background for Bluetooth scanning connection, now we want to port the function to AppleWatch APP, but the API related to iBeacon is not applicable on watchOS, does watchOS have a similar wake up mechanism?

Hello guys, I have such a big coding problem since a half year now about data saving. I have a fitness app where we can add our exercices depend of the muscle, so you can choose it and then select your weight and number of repetitions and valid your exercise. But when I do my exercises and my watch screen is also turn off, my muscle and muscleExercise variables are going back to their default value. Here some code for you : @EnvironmentObject var dataManager: DataManager @Environment(\.modelContext) private var context @AppStorage("savedGroupName") private var savedGroupName: String = "" @AppStorage("savedExerciceName") private var savedExerciceName: String = "" @State var groupName: String = "À choisir" @State var ExerciceChoose: String = "À choisir" I use my variables here : HStack { Text("Muscle:") Spacer() NavigationLink(destination: MusclesView()) { Text(savedGroupName.isEmpty ? "À choisir" : savedGroupName) } .buttonStyle(PlainButtonStyle()) } .onAppear { savedGroupName = groupName } HStack { Text("Exercise:") Spacer() NavigationLink(destination: MuscleExercicesView(groupName: groupName, ExerciceChoose: ExerciceChoose)) { Text(savedExerciceName.isEmpty ? "À choisir" : savedExerciceName) } .onAppear { savedExerciceName = ExerciceChoose } .buttonStyle(PlainButtonStyle()) } The value of my muscle variable is taking in an other view : struct MusclesView: View { let muscleGroup = ExerciceData.muscleGroups var body: some View { NavigationStack { List(muscleGroup, id: \.name) { group in NavigationLink(destination: MuscleExercicesView(groupName: group.name, ExerciceChoose: "À choisir")) { Text(group.name) } } } } } #Preview { MusclesView() } and the value of the exerciseMuscle variable is also taking in an other view : ```import SwiftUI struct MuscleExercicesView: View { let exerciceGroup = ExerciceData.muscleGroups @State var groupName: String @State var ExerciceChoose: String var body: some View { if let group = ExerciceData.muscleGroups.first(where: { $0.name == groupName }) { List(group.exercices, id: \.id) { exercice in NavigationLink(exercice.name, destination: CurrentInformationsView(groupName: groupName, ExerciceChoose: exercice.name)) } /*.onTapGesture { print("Selected exercise: \(ExerciceChoose) for muscle group: \(groupName)") }*/ .navigationTitle(Text("Exercices pour \(groupName)")) } else { Text("Aucun exercice trouvé pour \(groupName)") .navigationTitle(Text("Erreur")) } } } #Preview { MuscleExercicesView(groupName: "Pectoraux", ExerciceChoose: "À choisir") } I tried many things (like userDefault, put my values in an array to save it etc..) to keep my variables with the same value during the session but nothing works. I wish I could have some help from you guys. Have a good day ! Cyrille