I have TabView in ContentView and I want to add TabView for OnboardingView in OtherView, every things work, but it is throw error for TabView in OtherView like "Trailing closure passed to parameter of type 'Int' that does not accept a closure" I do not know why? Any idea?
ContentView:
struct TabView : View {
var body: some View{
VStack(spacing: 0){
.......
}
OtherView:
VStack {
TabView {
ForEach(onboardingData) { onboardingItem in
OnboardingCard(onboardingItem: onboardingItem)
}
}
.tabViewStyle(PageTabViewStyle(indexDisplayMode: .automatic))
.indexViewStyle(PageIndexViewStyle (backgroundDisplayMode:
.always))
.foregroundColor(.white)
}
Swift
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That's a question for Mac app (Cocoa).
I want to change the standard highlighting.
I thought to use tableView.selectionHighlightStyle.
But there are only 2 values: .none and .regular. Cannot find how to define a custom one.
So I tried a workaround:
set tableView.selectionHighlightStyle to .none
func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
tableView.selectionHighlightStyle = .none
keep track of previousSelection
Then, in tableViewSelectionDidChange
reset for previousSelection
func tableViewSelectionDidChange(_ notification: Notification) { }
if previousSelection >= 0 {
let cellView = theTableView.rowView(atRow: previousSelection, makeIfNecessary: false)
cellView?.layer?.backgroundColor = .clear
}
set for the selection to a custom color
let cellView = theTableView.rowView(atRow: row, makeIfNecessary: false)
cellView?.layer?.backgroundColor = CGColor(red: 0, green: 0, blue: 1, alpha: 0.4)
previousSelection = row
Result is disappointing :
Even though tableView.selectionHighlightStyle is set to .none, it does overlays the cellView?.layer
Is there a way to directly change the color for selection ?
I've suddenly started seeing hundreds of the same block of four error messages (see attached image) when running my app on my iOS device through Xcode. I've tried Cleaning the Build folder, but I keep seeing these messages in the console but can't find anything about them.
Phone is running iOS 26.1. Xcode is at 16.4. Mac is on Sequoia 15.5. The app is primarily a MapKit SwiftUI based application.
Messages below:
Connection error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.PerfPowerTelemetryClientRegistrationService was invalidated: Connection init failed at lookup with error 159 - Sandbox restriction." UserInfo={NSDebugDescription=The connection to service named com.apple.PerfPowerTelemetryClientRegistrationService was invalidated: Connection init failed at lookup with error 159 - Sandbox restriction.}
(+[PPSClientDonation isRegisteredSubsystem:category:]) Permission denied: Maps / SpringfieldUsage
(+[PPSClientDonation sendEventWithIdentifier:payload:]) Invalid inputs: payload={
isSPR = 0;
}
CAMetalLayer ignoring invalid setDrawableSize width=0.000000 height=0.000000
I'm also seeing the following error messages:
CoreUI: CUIThemeStore: No theme registered with id=0
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 ?
I’ve been struggling with a very frustrating issue using the new iOS 26 Swift Concurrency APIs for video processing. My pipeline reads frames using AVAssetReader, processes them via CIContext (Lanczos upscale), and then appends the result to an AVAssetWriter using the new PixelBufferReceiver.
The Problem: The execution randomly stops at the ]await append(...)] call. The task suspends and never resumes.
It is completely unpredictable: It might hang on the very first run, or it might work fine for 4-5 runs and then hang on the next one.
It is independent of video duration: It happens with 5-second clips just as often as with long videos.
No feedback from the system: There is no crash, no error thrown, and CPU usage drops to zero. The thread just stays in the suspended state indefinitely.
If I manually cancel the operation and restart the VideoEngine, it usually starts working again for a few more attempts, which makes me suspect some internal resource exhaustion or a deadlock between the GPU context and the writer's input.
The Code: Here is a simplified version of my processing loop:
private func proccessVideoPipeline(
readerOutputProvider: AVAssetReaderOutput.Provider<CMReadySampleBuffer<CMSampleBuffer.DynamicContent>>,
pixelBufferReceiver: AVAssetWriterInput.PixelBufferReceiver,
nominalFrameRate: Float,
targetSize: CGSize
) async throws {
while !Task.isCancelled, let payload = try await readerOutputProvider.next() {
let sampleBufferInfo: (imageBuffer: CVPixelBuffer?, presentationTimeStamp: CMTime) = payload.withUnsafeSampleBuffer { sampleBuffer in
return (sampleBuffer.imageBuffer, sampleBuffer.presentationTimeStamp)
}
guard let currentPixelBuffer = sampleBufferInfo.imageBuffer else {
throw AsyncFrameProcessorError.missingImageBuffer
}
guard let pixelBufferPool = pixelBufferReceiver.pixelBufferPool else {
throw NSError(domain: "PixelBufferPool", code: -1, userInfo: [NSLocalizedDescriptionKey: "No pixel buffer pool available"])
}
let newPixelBuffer = try pixelBufferPool.makeMutablePixelBuffer()
let newCVPixelBuffer = newPixelBuffer.withUnsafeBuffer({ $0 })
try upscale(currentPixelBuffer, outputPixelBuffer: newCVPixelBuffer, targetSize: targetSize )
let presentationTime = sampleBufferInfo.presentationTimeStamp
try await pixelBufferReceiver.append(.init(unsafeBuffer: newCVPixelBuffer), with: presentationTime)
}
}
Does anyone know how to fix it?
Hi, I am a UI designer and a total newbie with coding, so I have been using AI in Xcode to do all my coding for my personal project. Everything was working fine until this morning, when I tried to run my app in the simulator (I didn't even change any code from the last time I ran the simulator) and now the simulator is crashing and freezing and I have been trying to fix it with the AI recommendations, but it seems way too complicated for me to handle even with AI's help. I feel like I need to talk to an expert and guide me out of this hole. Please help. Thank you!
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 get several warnings in 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 am not sure how to understand it:
I have removed every NSNumber.self in the allowed lists for decode. To no avail, still get the avalanche of warnings.
What is the key NS.objects about ?
What may allowed classes set: '{(
"'NSArray' be referring to ? An inclusion of NSArray.self in a list for decode ? The type of a property in a class ?
I have defined a class :
class Item: NSObject, NSSecureCoding {
var name : String = ""
var color : ColorTag = .black // defined as enum ColorTag: Int
var value : Int = 0
static var supportsSecureCoding: Bool {
return true
}
Its decoder includes the following print statement to start:
required init(coder decoder: NSCoder) {
print(#function, "item should not be nil", decoder.decodeObject(of: Item.self, forKey: someKey))
Another class uses it:
class AllItems: NSObject, NSSecureCoding {
var allItems : [Item]?
static var supportsSecureCoding: Bool {
return true
}
and decodes as follows
required init(coder decoder: NSCoder) {
super.init() // Not sure it is necessary
allItems = decoder.decodeObject(of: NSArray.self, forKey: mykey) as? [Item]
print(#function, allItems) // <<-- get nil
}
I note:
decoder returns nil at line 5
I have tried to change to
decoder.decodeObject(of: [NSArray.self, NSString.self, NSColor.self, NSNumber.self], forKey: mykey))
Still get nil
And, decoder of class Item is not called (no print in the log)
What am I missing ?
I have an application that needs to make a USSD call, but on some devices the * and # don't work on the dialer, on others it does.
if let phoneNumber = ussdNumberTextfield.text {
let encoded = "telprompt:\(phoneNumber)".addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
if let url = URL(string: encoded) {
if application.canOpenURL(url){
DispatchQueue.main.async {
self.application.open(url, options: [:]) { success in
}
}
}
}
}
My app developed with the new Xcode 26 doesn't appear on CarPlay when running on iOS 14–15 devices. My developer has obtained the com.apple.developer.carplay-driving-task permission, but iOS 16+ devices allow my app to display on CarPlay.
Can anyone help resolve this issue? Is it because the carplay-driving-task permission is only available for iOS 16+ devices? If I want compatibility with iOS 14–15 devices, do I need to apply to Apple for the carplay-audio permission to use it? Has anyone encountered a similar issue?
Thanks!
Description
I am seeing inconsistent clipping behavior in UICollectionViewCell when presenting a context menu by long press on a subview that uses UIGlassEffect.
Summary of behavior:
Long-pressing a normal view inside a UICollectionViewCell presents the menu correctly (no clipping).
Long-pressing a view wrapped in UIVisualEffectView using UIGlassEffect causes the sub-view with glass effect to be clipped at the cell’s bounds.
clipsToBounds = false is set on:
the cell
the cell’s contentView
This behavior is reproducible and appears to be specifically related to UIGlassEffect.
I need to encode and decode Array<Array>
SomeStruct is multiplexed in an Int
The former API did work:
if let format = decoder.decodeObject(forKey: someKey) as? Array<Array<SomeStruct>> { }
But using the new API
if let format = decoder.decodeObject(of: Array<Array<Int>>.self, forKey: someKey) {
generates an error:
Cannot convert value of type 'Array<Array<Int>>.Type' to expected argument type '[AnyClass]' (aka 'Array<any AnyObject.Type>')
encoding is done as follows:
var format = Array(repeating: Array(repeating: 0, count: 4), count: 4)
// initialize the var
coder.encode(format, forKey: someKey)
What is the correct syntax ?
-deleted- The Glas Delete button is missing :) ;) :) Or I can't see the button due to much glas.
I have a large code that I try to update to change deprecated APIs.
In the former version, I used forWritingWith and forReadingWith
let data = NSMutableData()
let archiver = NSKeyedArchiver(forWritingWith: data)
archiver.encode(myObject, forKey: theKey)
if let data = NSMutableData(contentsOf: anURL) {
let unarchiver = NSKeyedUnarchiver(forReadingWith: data as Data)
let myObject = unarchiver.decodeObject(forKey: theKey) as! TheObjectType // <<-- returns the object
That I changed to
let data = NSMutableData()
let archiver = NSKeyedArchiver(requiringSecureCoding: true)
archiver.encode(myObject, forKey: theKey)
if let data = NSMutableData(contentsOf: anURL) {
do {
let unarchiver = try NSKeyedUnarchiver(forReadingFrom: data as Data)
let myObject = unarchiver.decodeObject(forKey: theKey) as? TheObjectType // <<-- This returns nil
This builds correctly.
But on execution, unarchiver.decodeObject now returns nil.
I have searched extensively to find the cause to no avail.
I may probably change the design to avoid NSKeyedArchiver, but that would be a huge refactoring.
I probably miss something obvious.
Could someone hint at the possible cause ?
Xcode tells me
Previewing in executable targets now requires a new build layout for unoptimized builds. Either set ENABLE_DEBUG_DYLIB to YES for this target, or break out your preview code into a separate framework with its own scheme.
How do enable that in Package.swift. swiftSettings don't work (.define and unsafeFlags with -D ...).
Creating a library product that the executable then depends on doesn't help either.
I have two targets, one is an executable target. The #Preview macro is in the non-executable target.
I'm sending local push notifications and want to show specific content based on the id of any notification the user opens. I'm able to do this with no issues when the app is already running in the background using the code below.
final class AppDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate {
let container = AppContainer()
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
let center = UNUserNotificationCenter.current()
center.delegate = self
return true
}
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) {
container.notifications.handleResponse(response)
completionHandler()
}
}
However, the delegate never fires if the app was terminated before the user taps the notification. I'm looking for a way to fix this without switching my app lifecycle to UIKit.
This is a SwiftUI lifecycle app using UIApplicationDelegateAdaptor.
@main
struct MyApp: App {
@UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
I’m aware notification responses may be delivered via launchOptions on cold start, but I’m unsure how to bridge that cleanly into a SwiftUI lifecycle app without reverting to UIKit.
There will be a cloud download icon on the folder, and when I click download, I will go to download the file below. Then this icon will disappear, but when I move a dataless file into the folder, the cloud download icon will appear again. I understand if there is any way to determine whether the folder has downloaded properties
I’m implementing a subscription purchase flow using promo code redemption via an external App Store URL.
Flow:
User taps “Purchase” in the app (spinner shown)
App opens the promo redemption URL (apps.apple.com/redeem)
User completes redemption in the App Store
User returns to the app
The app must determine whether the subscription was purchased within a reasonable time window
The app listens to Transaction.updates and also checks
Transaction.currentEntitlements when the app returns to the foreground.
Issue:
After redeeming a subscription promo code via the App Store and returning to the
app, the app cannot reliably determine whether the subscription was successfully
purchased within a short, user-acceptable time window.
In many cases, neither Transaction.updates nor
Transaction.currentEntitlements reflects the newly redeemed subscription
immediately after returning to the app. The entitlement may appear only after a
significant delay, or not within a 60-second timeout at all, even though the
promo code redemption succeeded.
Expected:
When the user returns to the app after completing promo code redemption,
StoreKit 2 should report the updated subscription entitlement shortly thereafter
(e.g. within a few seconds) via either Transaction.updates or
Transaction.currentEntitlements.
Below is the minimal interactor used in the sample project. The app considers
the purchase successful if either a verified transaction for the product is received via Transaction.updates, or the product appears in Transaction.currentEntitlements when the app returns to the foreground. Otherwise, the flow fails after a 60-second timeout.
Questions:
Is this entitlement propagation delay expected when redeeming promo codes through the App Store?
Is there a recommended API or flow for immediately determining whether a subscription has been successfully redeemed?
Is there a more reliable way to detect entitlement changes after promo code redemption without triggering user authentication prompts (e.g., from AppStore.sync())?
import UIKit
import StoreKit
final class PromoPurchaseInteractor {
private let timeout: TimeInterval = 60
private struct PendingOfferRedemption {
let productId: String
let completion: (Result<Bool, Error>) -> Void
}
private var pendingRedemption: PendingOfferRedemption?
private var updatesTask: Task<Void, Never>?
private var timeoutTask: Task<Void, Never>?
enum DefaultError: Error {
case generic
case timeout
}
init() {
NotificationCenter.default.addObserver(self, selector: #selector(willEnterForeground), name: UIApplication.willEnterForegroundNotification, object: nil)
}
deinit {
NotificationCenter.default.removeObserver(self)
updatesTask?.cancel()
timeoutTask?.cancel()
}
func purchaseProduct(using offerUrl: URL, productId: String, completion: @escaping (Result<Bool, Error>) -> Void) {
guard pendingRedemption == nil else {
completion(.failure(DefaultError.generic))
return
}
pendingRedemption = PendingOfferRedemption(productId: productId, completion: completion)
startPurchase(using: offerUrl)
}
@objc private func willEnterForeground() {
guard let pendingRedemption = pendingRedemption else { return }
startTimeoutObserver()
Task {
if await hasEntitlement(for: pendingRedemption.productId) {
await MainActor.run {
self.completePurchase(result: .success(true))
}
}
}
}
private func startPurchase(using offerURL: URL) {
startTransactionUpdatesObserver()
UIApplication.shared.open(offerURL) { [weak self] success in
guard let self = self else { return }
if !success {
self.completePurchase(result: .failure(DefaultError.generic))
}
}
}
private func completePurchase(result: Result<Bool, Error>) {
stopTransactionUpdatesObserver()
stopTimeoutObserver()
guard let _ = pendingRedemption else { return }
pendingRedemption?.completion(result)
pendingRedemption = nil
}
private func startTransactionUpdatesObserver() {
updatesTask?.cancel()
updatesTask = Task {
for await update in Transaction.updates {
guard case .verified(let transaction) = update else { continue }
await MainActor.run { [weak self] in
guard let self = self,
let pending = self.pendingRedemption,
transaction.productID == pending.productId
else { return }
self.completePurchase(result: .success(true))
}
await transaction.finish()
}
}
}
private func stopTransactionUpdatesObserver() {
updatesTask?.cancel()
updatesTask = nil
}
private func startTimeoutObserver() {
guard pendingRedemption != nil else { return }
timeoutTask?.cancel()
timeoutTask = Task {
try? await Task.sleep(nanoseconds: UInt64(timeout * 1_000_000_000))
await MainActor.run { [weak self] in
self?.completePurchase(result: .failure(DefaultError.timeout))
}
}
}
private func stopTimeoutObserver() {
timeoutTask?.cancel()
timeoutTask = nil
}
private func hasEntitlement(for productId: String) async -> Bool {
for await result in Transaction.currentEntitlements {
guard case .verified(let transaction) = result else { continue }
if transaction.productID == productId {
return true
}
}
return false
}
}
Hi,
I am implementing a sidebar navigation using UITabBarController with the new UITabGroup API on and above iPadOS 18. I’ve encountered an issue where selecting a child UITab within a group does not seem to trigger the child's own viewControllerProvider. Instead, the UITabBarController displays the ViewController associated with the parent UITabGroup.
The Issue: In the snippet below, when I tap "Item 2A" or "Item 2B" in the iPad sidebar, the app displays the emptyVC (clear background) defined in the section2Group provider, rather than the teal or cyan ViewControllers defined in the individual child tabs.
let item2A = UITab(
title: "Item 2A",
image: UIImage(systemName: "a.circle"),
identifier: "tab.section2.item2a"
) { _ in
self.createViewController(
title: "Section 2 - Item 2A",
color: .systemTeal,
description: "Part of Section 2A group"
)
}
let item2B = UITab(
title: "Item 2B",
image: UIImage(systemName: "b.circle"),
identifier: "tab.section2.item2b"
) { _ in
self.createViewController(
title: "Section 2 - Item 2B",
color: .systemCyan,
description: "Part of Section 2B group"
)
}
item2A.preferredPlacement = .sidebarOnly
item2B.preferredPlacement = .sidebarOnly
let section2Group = UITabGroup(
title: "Section 2",
image: UIImage(systemName: "folder.fill"),
identifier: "tabgroup.section2",
children: [item2A, item2B]
) { _ in
// This provider seems to take precedence over children
let emptyVC = UIViewController()
emptyVC.view.backgroundColor = .clear
return emptyVC
}
section2Group.preferredPlacement = .sidebarOnly
tabs.append(section2Group)
The Crash: If I attempt to resolve this by removing the viewControllerProvider from the UITabGroup (with the intent that only children should provide views), the application crashes at runtime. The exception indicates that all tabs within the sidebar must have an associated ViewController, suggesting that the UITabGroup requires a provider even if it is intended to act purely as a visual container.
Kindly clarify the following:
Is it the intended behavior for UITabGroup to override the viewControllerProvider of its children during sidebar selection?
Why does the API require the UITabGroup to return a ViewController if the selection target is a child UITab?
Is there a specific configuration or delegate method required to allow the UITabBarController to "pass through" the selection to the child tab's provider?
I would appreciate any guidance on whether this is an API limitation or if there is a different structural approach recommended for grouped sidebar items.