Hi. The WWDC video of the v2 weatherkit api showed some examples for the REST API. However, they were very limited.
The documentation for the REST API is currently for the v1 weatherkit API. When will the documentation for the v2 API be released? There are some new features of the v2 that I would really like to use, but I can't without knowing the new v2 REST API specifications.
Any guidance would be much appreciated. Thanks!
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I have an app on the App Store for many years enabling users to post text into clouds in augmented reality. Yet last week abruptly upon installing the app on the iPhone the screen started going totally dark and a list of little comprehensible logs came up of the kind:
ARSCNCompositor <0x300ad0e00>: ARSCNCompositor (0, 0) initialization failed. Matting is not set up properly.
many times, then
RWorldTrackingTechnique <0x106235180>: Unable to update pose [PredictorFailure] for timestamp 870.392108
ARWorldTrackingTechnique <0x106235180>: Unable to predict pose [1] for timestamp 870.392108
again several times and then:
ARWorldTrackingTechnique <0x106235180>: SLAM error callback: Error Domain=Slam Error Code=7 "Non fatal error occurred due to significant drop in a IMU data" UserInfo={NSDescription=Non fatal error occurred due to significant drop in a IMU data, NSLocalizedFailureReason=SlamEngineNodeGroup Failure: IMU issue: gyro data stream verification failed [Significant data drop]. Failed on timestamp: 870.413247, Last known timestamp: 865.350198, Delta: 5.063049, System timestamp: 870.415781, Delta between system and frame: 0.002534. }
and then again the pose issues several times.
I hoped the new beta version would have solved the issue, but it was not the case. Unfortunately I do not know if that depends on the beta version or some other issue, given the app may be not installed on the Mac simulator.
Hey there, I have a slight problem which is also known on the web, but I couldn't find any answers...
My iOS App is working with documents like pdf and images. It is made to handle invoices and upload them to an external service. The app's job is to compress those pdfs and images. Sadly the PDFKit's PDFDocument increases its size just after importing it with pdfDocument = PDFDocument(url: url) and later exporting it to an pdf file again with data = pdf.dataRepresentation() without ever modifying it.
It increases by server KB after each export. Do you have any alternatives to the renderer dataRepresentation() or a general PDFKit alternative
Thanks
In the context of a NSFileProviderReplicatedExtension I would like to only see the "Move to Bin" Finder action when files have been materlialised ( isDownloaded fileprovider attribute )
I thought it might be possible to get the isDownloaded attribute in my NSFileProviderItemProtocol class capabilities method but that doesn't seem to be the case.
Possible ?
Hi,
I understand that it's possible to add a virtual debit or credit card from a mobile app into the iOS Wallet using PassKit from the Apple SDK. However, I haven't come across documentation on how to achieve this directly from a web app. I found this article on Apple's support site (https://support.apple.com/en-gb/guide/security/secdc2567239/web), which mentions adding cards from a card issuer’s website, but it doesn’t provide details on the process.
Could you please confirm if it's possible to add a card directly from a web app without using a mobile app? If so, could you guide me to the relevant documentation?
Thanks in advance!
I can reproduce the bug that CallKit doesn't active audiosession after the outgoing call put on hold because of an incoming call.
VoIP calling with CallKit
Steps to reproduce:
Download SpeakerBox example app from the link above and start it with XCode
Start a new outgoing call
Call your phone from other phone
Hold and Accept the call
After a few secs finish the call from the other phone
The outgoing call will be still on hold
Click on the call and click Toggle Hold
The call won't be active again because the audiosession is activated.
Logs:
Received provider(_:didDeactivate:)
Received provider(_:didDeactivate:)
Received provider(_:didDeactivate:)
Received provider(_:didDeactivate:)
Received provider(_:didDeactivate:)
Requested transaction successfully
Starting audio
Type: stdio
AURemoteIO.cpp:1162 failed: 561017449 (enable 3, outf< 1 ch, 44100 Hz, Float32> inf< 1 ch, 44100 Hz, Float32>)
Type: Error | Timestamp: 2024-08-15 12:20:29.949437+02:00 | Process: Speakerbox | Library: libEmbeddedSystemAUs.dylib | Subsystem: com.apple.coreaudio | Category: aurioc | TID: 0x19540d
AVAEInternal.h:109 [AVAudioEngineGraph.mm:1344:Initialize: (err = PerformCommand(*outputNode, kAUInitialize, NULL, 0)): error 561017449
Type: Error | Timestamp: 2024-08-15 12:20:29.949619+02:00 | Process: Speakerbox | Library: AVFAudio | Subsystem: com.apple.avfaudio | Category: avae | TID: 0x19540d
Couldn't start Apple Voice Processing IO: Error Domain=com.apple.coreaudio.avfaudio Code=561017449 "(null)" UserInfo={failed call=err = PerformCommand(*outputNode, kAUInitialize, NULL, 0)}
Type: Notice | Timestamp: 2024-08-15 12:20:29.949730+02:00 | Process: Speakerbox | Library: Speakerbox | TID: 0x19540d
Route change:
Type: Notice | Timestamp: 2024-08-15 12:20:30.167498+02:00 | Process: Speakerbox | Library: Speakerbox | TID: 0x19540d
ReasonUnknown
Type: Notice | Timestamp: 2024-08-15 12:20:30.167549+02:00 | Process: Speakerbox | Library: Speakerbox | TID: 0x19540d
Previous route:
Type: Notice | Timestamp: 2024-08-15 12:20:30.167568+02:00 | Process: Speakerbox | Library: Speakerbox | TID: 0x19540d
<AVAudioSessionRouteDescription: 0x302c00bc0,
inputs = (
"<AVAudioSessionPortDescription: 0x302c01330, type = MicrophoneBuiltIn; name = iPhone Mikrofon; UID = Built-In Microphone; selectedDataSource = (null)>"
);
outputs = (
"<AVAudioSessionPortDescription: 0x302c004d0, type = Receiver; name = Vev\U0151; UID = Built-In Receiver; selectedDataSource = (null)>"
)>
Type: Notice | Timestamp: 2024-08-15 12:20:30.167626+02:00 | Process: Speakerbox | Library: Speakerbox | TID: 0x19540d
Hi,
You're here because you've had issues with your implementation of Wallet Extensions for Apple Pay In-App Provisioning or In-App Verification. To prevent sending sensitive credentials in plain text, create a new report in Feedback Assistant to share the details requested below with the appropriate log profiles installed.
Gathering Required Information for Troubleshooting Apple Pay In-App Provisioning or In-App Verification Issues
While troubleshooting Apple Pay In-App Provisioning or In-App Verification, it is essential that the issuer is able to collect logs on their device and check those logs for error message. This is also essential when reporting issues to Apple. To gather the required data for your own debugging as well as reporting issues, please perform the following steps on the test device:
Install the Apple Pay and Wallet profiles on your iOS or watchOS device. If the issue occurs on Mac, continue to Step 2.
Reproduce the issue and make a note of the timestamp when the issue occurred, while optionally capturing screenshots or video.
Gather a sysdiagnose on the same iOS or watchOS device, or on macOS.
Create a Feedback Assistant report with the following information:
The bundle IDs
App bundle ID
Non-UI app extension bundle ID (if applicable)
UI app extension bundle ID (if applicable)
The serial number of the device.
For iOS and watchOS: Open Settings > General > About > Serial Number (tap and hold to copy).
For macOS: Open the Apple () menu > About This Mac > Serial Number.
The SEID (Secure Element Identifier) of the device, represented as a HEX encoded string.
For iOS and watchOS: Open Settings > General > About > SEID (tap and hold to copy).
For macOS: Open the Apple () menu > About This Mac > System Report > NVMExpress > Serial Number.
The sysdiagnose gathered after reproducing the issue.
The timestamp (including timezone) of when the issue was reproduced.
The type of provisioning failure (e.g., error at Terms & Conditions, error when adding a card, etc.)
The issuer/network/country of the provisioned card (e.g., Mastercard – US)
Last 4 digits of the FPAN
Last 4 digits of the DPAN (if available)
Was this test initiated from the Issuer App? (e.g., yes or no)
The type of environment (e.g., sandbox or production)
Screenshots or videos of errors and unexpected behaviors (optional).
Important: From the logs gathered above, you should be able to determine the cause of the failure from PassbookUIService, PassKit or PassKitCore, and by filtering for your SEID or bundle ID of your app or app extensions in the Console app.
Submitting your feedback
Before you submit to Feedback Assistant, please confirm the requested information above is included in your feedback. Failure to provide the requested information will only delay my investigation into the reported issue within your Apple Pay client.
After your submission to Feedback Assistant is complete, please respond in your existing Developer Forums post with the Feedback ID. Once received, I can begin my investigation and determine if this issue is caused by an error within your client, a configuration issue within your developer account, or an underlying system bug.
Cheers,
Paris X Pinkney | WWDR | DTS Engineer
We have an app with a few App Clip Advanced Experiences. Since around 28th of August the status of the experiences seems to be stuck in either CREATE_SUBMITTED or UPDATE_SUBMITTED and they don't get updated to PUBLISHED anymore.
I found this in the experiences JSON loaded by AppStoreConnect when editing the experiences:
"statuses": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "PUBLISHED",
"doc_count": 182
},
{
"key": "CREATE_SUBMITTED",
"doc_count": 7
},
{
"key": "UPDATE_SUBMITTED",
"doc_count": 3
}
]
},
This shows that 10 experiences are stuck in other status than PUBLISHED.
I created a Feedback with ID FB15041208 and a DTS last week.
This is REALLY important for us to be fixed immediately since we have customers that rely on this!
A ShaderGraphMaterial with an Occlusion Surface Output generated with RealityComposer 2 fails to load on iOS 18 and macOS 15 with the following error:
RealityFoundation.ShaderGraphMaterial.LoadError.invalidTypeFound (https://developer.apple.com/documentation/realitykit/shadergraphmaterial/loaderror/invalidtypefound)
This happens with both https://developer.apple.com/documentation/shadergraph/realitykit/occlusion-surface-(realitykit) and https://developer.apple.com/documentation/shadergraph/realitykit/shadow-receiving-occlusion-surface-(realitykit)
RealityView { content in
do {
let bgEntity = ModelEntity(mesh: .generateCone(height: 0.5, radius: 0.1), materials: [SimpleMaterial(color: .red, isMetallic: true)])
bgEntity.position.z = -0.2
content.add(bgEntity)
let occlusionMaterial = try await ShaderGraphMaterial(named: "/Root/OcclusionMaterial", from: "OcclusionMaterial")
let testEntity = ModelEntity(mesh: .generateSphere(radius: 0.4), materials: [occlusionMaterial])
content.add(testEntity)
content.cameraTarget = testEntity
} catch {
print("Shader Graph Load Error:")
dump(error)
}
}
.realityViewCameraControls(.orbit)
.edgesIgnoringSafeArea(.all)
Feedback ID: FB15081296
Topic:
Spatial Computing
SubTopic:
Reality Composer Pro
Tags:
RealityKit
Reality Composer Pro
Shader Graph Editor
Hello there!
I wanted to give a native scrolling mechanism for the Swift Charts Graph a try and experiment a bit if the scenario that we try to achieve might be possible, but it seems that the Swift Charts scrolling performance is very poor.
The graph was created as follows:
X-axis is created based on a date range,
Y-axis is created based on an integer values between moreless 0-320 value.
the graph is scrollable horizontally only (x-axis),
The time range (x-axis) for the scrolling content was set to one year from now date (so the user can scroll one year into the past as a minimum visible date (.chartXScale).
The X-axis shows 3 hours of data per screen width (.chartXVisibleDomain).
The data points for the graph are generated once when screen is about to appear so that the Charts engine can use it (no lazy loading implemented yet).
The line data points (LineMark views) consist of 2880 data points distributed every 5 minutes which simulates - two days of continuous data stream that we want to present. The rest of the graph displays no data at all.
The performance result:
The graph on the initial loading phase is frozen for about 10-15 seconds until the data appears on the graph.
Scrolling is very laggy - the CPU usage is 100% and is unacceptable for the end users.
If we show no data at all on the graph (so no LineMark views are created at all) - the result is similar - the empty graph scrolling is also very laggy.
Below I am sharing a test code:
@main
struct ChartsTestApp: App {
var body: some Scene {
WindowGroup {
ContentView()
Spacer()
}
}
}
struct LineDataPoint: Identifiable, Equatable {
var id: Int
let date: Date
let value: Int
}
actor TestData {
func generate(startDate: Date) async -> [LineDataPoint] {
var values: [LineDataPoint] = []
for i in 0..<(1440 * 2) {
values.append(
LineDataPoint(
id: i,
date: startDate.addingTimeInterval(
TimeInterval(60 * 5 * i) // Every 5 minutes
),
value: Int.random(in: 1...100)
)
)
}
return values
}
}
struct ContentView: View {
var startDate: Date {
return endDate.addingTimeInterval(-3600*24*30*12) // one year into the past from now
}
let endDate = Date()
@State var dataPoints: [LineDataPoint] = []
var body: some View {
Chart {
ForEach(dataPoints) { item in
LineMark(
x: .value("Date", item.date),
y: .value("Value", item.value),
series: .value("Series", "Test")
)
}
}
.frame(height: 200)
.chartScrollableAxes(.horizontal)
.chartYAxis(.hidden)
.chartXScale(domain: startDate...endDate) // one year possibility to scroll back
.chartXVisibleDomain(length: 3600 * 3) // 3 hours visible on screen
.onAppear {
Task {
dataPoints = await TestData().generate(startDate: startDate)
}
}
}
}
I would be grateful for any insights or suggestions on how to improve it or if it's planned to be improved in the future.
Currently, I use UIKit CollectionView where we split the graph into smaller chunks of the graph and we present the SwiftUI Chart content in the cells, so we use the scrolling offered there. I wonder if it's possible to use native SwiftUI for such a scenario so that later on we could also implement some kind of lazy loading of the data as the user scrolls into the past.
Using desaturated mode on an image in a widget will break any links or buttons that use the image as their 'label'.
Using the following will just open the app as if there was no link at all - therefore just using the fallback userActivity handler, or any .widgetURL() urls provided.
Link(destination: URL(string: "bug://never-works")!) {
Image("puppy")
.widgetAccentedRenderingMode(.desaturated)
}
The same goes for buttons:
Button(intent: MyDemoIntent()) {
Image("puppy")
.widgetAccentedRenderingMode(.desaturated)
}
I've tried hacky solutions like putting the link behind the image using a ZStack, and disabling hit testing on the image, but they don't work. Anything else to try?
Logged as Feedback #15152620.
Problem Description:
In a SwiftUI application, I've wrapped UIKit's UIPageViewController using UIViewControllerRepresentable, naming the wrapped class PagedInfiniteScrollView. This component causes navigation bar elements (title and buttons) to disappear.
This issue only occurs in Low Power Mode on a physical device.
Steps to Reproduce:
Enable Low Power Mode on a physical device and open the app's home page.
From the home page, open a detail sheet containing PagedInfiniteScrollView. This detail page include a navigation title and a toolbar button in the top-right corner. PagedInfiniteScrollView supports horizontal swiping to switch pages.
Tap the toolbar button in the top-right corner of the detail page to open an edit sheet.
Without making any changes, close the edit sheet and return to the detail page. On the detail page, swipe left and right on the PagedInfiniteScrollView.
Expected Result:
When swiping the PagedInfiniteScrollView, the navigation title and top-right toolbar button of the detail page should remain visible.
Actual Result:
When swiping the PagedInfiniteScrollView, the navigation title and top-right toolbar button of the detail page disappear.
import SwiftUI
@main
struct CalendarApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
import SwiftUI
struct ContentView: View {
@State private var showDetailSheet = false
@State private var currentPage: Int = 0
var body: some View {
NavigationStack {
Button {
showDetailSheet = true
} label: {
Text("show Calendar sheet")
}
.sheet(isPresented: $showDetailSheet) {
DetailSheet(currentPage: $currentPage)
}
}
}
}
struct DetailSheet: View {
@Binding var currentPage: Int
@State private var showEditSheet = false
var body: some View {
NavigationStack {
PagedInfiniteScrollView(content: { pageIndex in
Text("\(pageIndex)")
.frame(width: 200, height: 200)
.background(Color.blue)
},
currentPage: $currentPage)
.sheet(isPresented: $showEditSheet, content: {
Text("edit")
})
.navigationTitle("Detail")
.navigationBarTitleDisplayMode(.inline)
.toolbar {
ToolbarItemGroup(placement: .topBarTrailing) {
Button {
showEditSheet = true
} label: {
Text("Edit")
}
}
}
}
}
}
import SwiftUI
import UIKit
struct PagedInfiniteScrollView<Content: View>: UIViewControllerRepresentable {
typealias UIViewControllerType = UIPageViewController
let content: (Int) -> Content
@Binding var currentPage: Int
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
func makeUIViewController(context: Context) -> UIPageViewController {
let pageViewController = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal)
pageViewController.dataSource = context.coordinator
pageViewController.delegate = context.coordinator
let initialViewController = UIHostingController(rootView: IdentifiableContent(index: currentPage, content: { content(currentPage) }))
pageViewController.setViewControllers([initialViewController], direction: .forward, animated: false, completion: nil)
return pageViewController
}
func updateUIViewController(_ uiViewController: UIPageViewController, context: Context) {
let currentViewController = uiViewController.viewControllers?.first as? UIHostingController<IdentifiableContent<Content>>
let currentIndex = currentViewController?.rootView.index ?? 0
if currentPage != currentIndex {
let direction: UIPageViewController.NavigationDirection = currentPage > currentIndex ? .forward : .reverse
let newViewController = UIHostingController(rootView: IdentifiableContent(index: currentPage, content: { content(currentPage) }))
uiViewController.setViewControllers([newViewController], direction: direction, animated: true, completion: nil)
}
}
class Coordinator: NSObject, UIPageViewControllerDataSource, UIPageViewControllerDelegate {
var parent: PagedInfiniteScrollView
init(_ parent: PagedInfiniteScrollView) {
self.parent = parent
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
guard let currentView = viewController as? UIHostingController<IdentifiableContent<Content>>, let currentIndex = currentView.rootView.index as Int? else {
return nil
}
let previousIndex = currentIndex - 1
return UIHostingController(rootView: IdentifiableContent(index: previousIndex, content: { parent.content(previousIndex) }))
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
guard let currentView = viewController as? UIHostingController<IdentifiableContent<Content>>, let currentIndex = currentView.rootView.index as Int? else {
return nil
}
let nextIndex = currentIndex + 1
return UIHostingController(rootView: IdentifiableContent(index: nextIndex, content: { parent.content(nextIndex) }))
}
func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
if completed,
let currentView = pageViewController.viewControllers?.first as? UIHostingController<IdentifiableContent<Content>>,
let currentIndex = currentView.rootView.index as Int? {
parent.currentPage = currentIndex
}
}
}
}
extension PagedInfiniteScrollView {
struct IdentifiableContent<Content: View>: View {
let index: Int
let content: Content
init(index: Int, @ViewBuilder content: () -> Content) {
self.index = index
self.content = content()
}
var body: some View {
content
}
}
}
Dear
We try to generate IPA with Xcode Cloud but this task fail in Export archive phase (Export archive for app-store distribution).
The error that appear in the archive logs is:
error: exportArchive Provisioning profile "iOS Team Store Provisioning Profile: cl.app.myapp" doesn't include the com.apple.CommCenter.fine-grained entitlement.
Any idea about to resolve this problem ?
king regards
Topic:
Developer Tools & Services
SubTopic:
Xcode Cloud
Tags:
Xcode Cloud
Entitlements
Provisioning Profiles
I've been struggling with this issue since the release of macOS 15 Sequoia. I'm wondering if anyone else has encountered it or if anyone has a workaround to fix it.
Inserting a new element into the array that acts as data source for a SwiftUI List with a ForEach is never animated even if the insertion is wrapped in a withAnimation() call.
It seems that some other changes can be automated though: e.g. calls to shuffle() on the array successfully animate the changes.
This used to work fine on macOS 14, but stopped working on macOS 15.
I created a very simple project to reproduce the issue:
import SwiftUI
@main
struct TestApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
struct IdentifiableItem: Identifiable {
let id = UUID()
var name: String { "Item \(id)" }
}
struct ContentView: View {
@State var items: [IdentifiableItem] = [
IdentifiableItem(), IdentifiableItem(), IdentifiableItem(), IdentifiableItem(), IdentifiableItem(),
IdentifiableItem(), IdentifiableItem(), IdentifiableItem(), IdentifiableItem(), IdentifiableItem(),
]
var body: some View {
List {
ForEach(items) { item in
Text(item.name)
}
}
Button("Add Item") {
withAnimation {
items.insert(IdentifiableItem(), at: 0)
}
}
Button("Shuffle Items") {
withAnimation {
items.shuffle()
}
}
}
}
How to reproduce
Copy the code below in an Xcode project.
Run it on macOS 15.
Hit the "Add Item" button
Expected: A new item is inserted with animation.
Result: A new item is inserted without animation.
How to prove this is a regression
Follow the same steps above but run on macOS 14.
A new item is inserted with animation.
Hello,
I think it is quite a common use-case to open the parent app that owns the ShieldActionDelegate when the user selects an action in the Shield.
There are only three options available that we can do in response to an action:
ShieldActionResponse.none
ShieldActionResponse.close
ShieldActionResponse.defer
It would be great if this new one would be added as well:
ShieldActionResponse.openParentApp
While finding a workaround for now, the problem is that the ShieldActionDelegate is not a normal app extension. That means, normal tricks do not work to open the parent app from here.
For example, UIApplication.shared.open(url) does not work because we can’t access UIApplication from the ShieldActionDelegate unfortunately.
NSExtensionContext is also not available in the ShieldActionDelegate unfortunately, so that’s also not possible.
There are apps however, that managed to find a workaround, in my research I stumbled across these two:
https://apps.apple.com/de/app/applocker-passcode-lock-apps/id1132845904?l=en-GB
https://apps.apple.com/us/app/app-lock/id6448239603
Please find a screen recording (gif) attached.
Their workaround is 100% what I’m looking for, so there MUST be a way to do so that is compliant with the App Store guidelines (after all, the apps are available on the App Store!).
I had documented my feature request more than 2 years ago in this radar as well: FB10393561
Hello everyone,
I’m currently receiving feedback from clients in a production environment who are encountering a BadDeviceToken error with Live Activities, which is preventing their states from updating. However, for other clients, the token is working fine and everything functions as expected.
I’m collaborating with the back-end developers to gather more information about this issue, but the only log message we’re seeing is:
Failed to send a push, APNS reported an error: BadDeviceToken
I would greatly appreciate it if anyone could provide some insight or information on how to resolve this issue.
Hello.
My developer membership is expired. I cannot renew because the renewal option/button does not appears in any device. A banner tells me:
"Any apps you had on the App Store are no longer available for download and you can no longer access membership benefits. If you’d like to renew your membership to reinstate your apps and membership benefits, open the Apple Developer app on your iPhone, iPad, or Mac. Sign in to your account, tap/click Renew, and follow the prompts.If you agreed to the Paid Applications Agreement, you’ll need to agree to it again after renewal in the Agreements, Tax and Banking section of App Store Connect."
However, there's no "Renew" to tap or click anywhere in the app nor in the web.
Any ideas?
Thanks a lot.
Hello,
I am writing a NetworkExtension VPN using custom protocol and our client would like to able to use 5G network slice on the VPN, is this possible at all?
From Apple's documentation, I found the following statement:
If both network slicing and VPN are configured for an app or device, the VPN connection takes precedence over the network slice, rendering the network slice unused.
Is it possible to assign a network slice on a NetworkExtension-based VPN and let the VPN traffic uses the assign network slice?
Many thanks
We're seeing sporadic crashes on devices running iOS 18.1 - both beta and release builds (22B83). The stack trace is always identical, a snippet of it below. As you can tell from the trace, it's happening in places we embed SwiftUI into UIKit via UIHostingController.
Anyone else seeing this?
4 libobjc.A.dylib 0xbe2c _objc_fatalv(unsigned long long, unsigned long long, char const*, char*) + 30
5 libobjc.A.dylib 0xb040 weak_register_no_lock + 396
6 libobjc.A.dylib 0xac50 objc_storeWeak + 472
7 libswiftCore.dylib 0x43ac34 swift_unknownObjectWeakAssign + 24
8 SwiftUI 0xeb74c8 _UIHostingView.base.getter + 160
9 SwiftUI 0x92124 _UIHostingView.layoutSubviews() + 112
10 SwiftUI 0x47860 @objc _UIHostingView.layoutSubviews() + 36
I have been working on a multi-platform multi-touch HID-standard digitizer clickpad device.
The device uses Bluetooth Low Energy (BLE) as its connectivity transport and advertises HID over GATT. To date, I have the device working successfully on Windows 11 as a multi-touch, gesture-capable click pad with no custom driver or app on Windows.
However, I have been having difficulty getting macOS to recognize and react to it as a HID-standard multi-touch click pad digitizer with either the standard Apple HID driver (AppleUserHIDEventDriver) or with a custom-coded driver extension (DEXT) modeled, based on the DTS stylus example and looking at the IOHIDFamily open source driver(s).
The trackpad works with full-gesture support on Windows 11 and the descriptors seem to be compliant with the R23 Accessory Guidelines document, §15.
With the standard, matching Apple AppleUserHIDEventDriver HID driver, when enumerating using stock-standard HID mouse descriptors, the device works fine on macOS 14.7 "Sonoma" as a relative pointer device with scroll wheel capability (two finger swipe generates a HID scroll report) and a single button.
With the standard, matching Apple AppleUserHIDEventDriver HID driver, when enumerating using stock-standard HID digitizer click/touch pad descriptors (those same descriptors used successfully on Windows 11), the device does nothing. No button, no cursor, no gestures, nothing. Looking at ioreg -filtb, all of the key/value pairs for the driver match look correct.
Because, even with the Apple open source IOHIDFamily drivers noted above, we could get little visibility into what might be going wrong, I wrote a custom DriverKit/HIDDriverKit driver extension (DEXT) (as noted above, based on the DTS HID stylus example and the open source IOHIDEventDriver.
With that custom driver, I can get a single button click from the click pad to work by dispatching button events to dispatchRelativePointerEvent; however, when parsing, processing, and dispatching HID digitizer touch finger (that is, transducer) events via IOUserHIDEventService::dispatchDigitizerTouchEvent, nothing happens.
If I log with:
% sudo log stream --info --debug --predicate '(subsystem == "com.apple.iohid")'
either using the standard AppleUserHIDEventDriver driver or our custom driver, we can see that our input events are tickling the IOHIDNXEventTranslatorSessionFilter HID event filter, so we know HID events are getting from the device into the macOS HID stack. This was further confirmed with the DTS Bluetooth PacketLogger app. Based on these events flowing in and hitting IOHIDNXEventTranslatorSessionFilter, using the standard AppleUserHIDEventDriver driver or our custom driver, clicks or click pad activity will either wake the display or system from sleep and activity will keep the display or system from going to sleep.
In short, whether with the stock driver or our custom driver, HID input reports come in over Bluetooth and get processed successfully; however, nothing happens—no pointer movement or gesture recognition.
STEPS TO REPRODUCE
For the standard AppleUserHIDEventDriver:
Pair the device with macOS 14.7 "Sonoma" using the Bluetooth menu.
Confirm that it is paired / bonded / connected in the Bluetooth menu.
Attempt to click or move one or more fingers on the touchpad surface.
Nothing happens.
For the our custom driver:
Pair the device with macOS 14.7 "Sonoma" using the Bluetooth menu.
Confirm that it is paired / bonded / connected in the Bluetooth menu.
Attempt to click or move one or more fingers on the touchpad surface.
Clicks are correctly registered. With transducer movement, regardless of the number of fingers, nothing happens.