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 ?
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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 ?
I got accidentally this graph whilst playing with the periods of display in AppStoreConnect Trends
hourly graph
on several days
But when I try to recall it, no way. If I select a multi days period, hourly graph is not available.
Someone has an idea how to get it again ? Or was I lucky to profit of a forums bug ?
Here are the settings for the graph I cannot select again.
I used to resize images (editing width and height when writing the post) in order to avoid ridiculously large images in reading published post.
Since a few weeks, that does not work anymore.
When I edit, I see the reduced size in Live Preview:
But once posted, images are much larger as seen below:
Looks like the image is now resized to fill full width.
I filed a bug report: Dec 27, 2025 at 1:43 PM – FB21446929
PS: that change ignores @eskimo wise advice "Quinn’s Top Ten DevForums Tips" n°10 (https://developer.apple.com/forums/thread/706527).
According to this news, we don't need anymore (at least temporarily): https://www.macrumors.com/2025/12/23/texas-app-store-law-blocked/
A Texas federal judge today blocked an App Store age verification law that was set to go into effect on January 1, 2026, which means Apple may not have to support the changes after all.
Hope we shall get very rapidly more information from Apple.
I'm struggling to implement required code for SB2420 compliance.
I try to learn on a very simple use case.
the app is UIKit
Build in Xcode 26.2
it displays a single Hello view with a button that will simply show a "Good day" label.
I assume the app will be rated 4+.
I tried the following code, using available information in Xcode (limited):
import UIKit
import DeclaredAgeRange
// other import needed ?
class ViewController: UIViewController {
@IBOutlet weak var welcomeLabel: UILabel! // initially hidden
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func testAgeRange() -> Bool {
if !isEligibleForAgeFeatures { // Not found. Which import needed ?
return true // Not called from Texas
}
// Following code from Xcode doc…
do {
let response = try await AgeRangeService.shared.requestAgeRange(ageGates: 13, 15, 18) // Compiler Error: Missing argument for parameter 'in' in call
// Can I add the 4 gate ?
guard let lowerBound = response.lowerBound else {
// Allow access to under 13 features.
return false
}
var ok = false
if lowerBound >= 18 { // Not needed ?
// Allow access to 18+ features.
ok = true
} else if lowerBound >= 15 { // Not needed ?
// Allow access to 15+ features.
ok = true
} else if lowerBound >= 13 { // Not needed ?
// Require parental consent ?
// Allow access to 13+ features.
ok = true // if consent OK
} else {
// Require parental consent ?
// Show age-appropriate content
ok = true // if consent OK
}
return ok // Authorized for all 4+
} catch AgeRangeService.Error.notAvailable {
// No age range provided.
return false
}
}
func executeStart() {
welcomeLabel.isHidden = false
}
@IBAction func start(_ sender: UIButton) {
if #available(iOS 26.0, *) {
if testAgeRange() {
// Need to test for parental control here ?
} else {
// Alert and exit the app ?
}
} else {
// do nothing ? Can we run the app ?
}
executeStart()
}
}
The logic would be:
before allowing action with the start button, check
is it IOS 26+ so that we can call API
if so, is verification needed (Texas SB2420)
if not, we can proceed
if required, test age range
As app is 4+, all ranges should be OK
But need to test parental control
Now, many pending questions in code:
line 14: get an error: Cannot find 'isEligibleForAgeFeatures' in scope
line 19: I used the documentation sample for AgeRangeService, but get a Compiler Error: Missing argument for parameter 'in' in call
line 35: how to implement parental control ?
In addition, in the metadata of the app, should I declare that parental control ?
Age verification?
Mechanism for confirming that a person's age meets the age requirement for accessing content or services
As there is no restriction on age, is it required ?
Any help welcomed as well as link to a comprehensive tutorial.
Since recently, when I try to close a thread I created on an answer of mine, I get the following error:
Trying later, next day, does not solve it. In the list of all threads, the post is not marked as answered.
But if I look via Chrome or plain Safari, I see the answer itself is marked as correct:
Which is not the case when opening in Safari Technology Preview (Release 233) where the same answer is still to be accepted:
If an app is rated 4+, does it have any additional obligation due to the SB2420 beyond this rating on the AppStore ?
After porting code to Swift 6 (Xcode 16.4), I get a consistent crash (on simulator) when using UNUserNotificationServiceConnection
It seems (searching on the web) that others have met the same issue. Is it a known Swift6 bug ? Or am I misusing UNUserNotification ?
I do not have the crash when compiling on Xcode 26 ß5, which hints at an issue in Xcode 16.4.
Crash log:
Thread 10 Queue : com.apple.usernotifications.UNUserNotificationServiceConnection.call-out (serial)
As far as I can tell, it seems error is when calling
nonisolated func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
I had to declare non isolated to solve a compiler error.
Main actor-isolated instance method 'userNotificationCenter(_:didReceive:withCompletionHandler:)' cannot be used to satisfy nonisolated requirement from protocol 'UNUserNotificationCenterDelegate'
I was advised to:
Add 'nonisolated' to 'userNotificationCenter(_:didReceive:withCompletionHandler:)' to make this instance method not isolated to the actor
I filed a bug report: Aug 10, 2025 at 2:43 PM – FB19519575
Topic:
App & System Services
SubTopic:
Notifications
Tags:
Swift
Xcode
Notification Center
User Notifications
I'm struggling to convert Swift 5 to Swift 6.
As advised in doc, I first turned strict concurrency ON. I got no error.
Then, selected swift6… and problems pop up.
I have a UIViewController with
IBOutlets: eg a TextField.
computed var eg duree
func using UNNotification: func userNotificationCenter
I get the following error in the declaration line of the func userNotificationCenter:
Main actor-isolated instance method 'userNotificationCenter(_:didReceive:withCompletionHandler:)' cannot be used to satisfy nonisolated requirement from protocol 'UNUserNotificationCenterDelegate'
So, I declared the func as non isolated.
This func calls another func func2, which I had also to declare non isolated.
Then I get error on the computed var used in func2
Main actor-isolated property 'duree' can not be referenced from a nonisolated context
So I declared duree as nonsilated(unsafe).
Now comes the tricky part.
The computed var references the IBOutlet dureeField
if dureeField.text == "X"
leading to the error
Main actor-isolated property 'dureeField' can not be referenced from a nonisolated context
So I finally declared the class as mainActor and the textField as nonisolated
@IBOutlet nonisolated(unsafe) weak var dureeField : UITextField!
That silences the error (but declaring unsafe means I get no extra robustness with swift6) just to create a new one when calling dureeField.text:
Main actor-isolated property 'text' can not be referenced from a nonisolated context
Question: how to address properties inside IBOutlets ? I do not see how to declare them non isolated and having to do it on each property of each IBOutlet would be impracticable.
The following did work, but will make code very verbose:
if MainActor.assumeIsolated({dureeField.text == "X"}) {
So I must be missing something.
When looking ay space used by system, I found that AssetsV2 (in System/Library) account for 270 GB.
In this folder, 3 account for 260 GB and are apparently related to Xcode simulators:
Content is a bit cryptic. Does it relate to some specific apps I compiled and ran on simulator ?
Or is it related to older versions of Xcode I keep on the Mac ?
How to know what each forlder relates to ? Is it safe to remove ?
I sometimes use Xcode 14.2.
Recently, I have an issue with simulators:
on some SwiftUI project, the simulator list is empty.
I created a new project. I see the complete list of simulators, but when running for a simulator, it fails with following diag;
Same error with UIKit project.
Details
Unable to boot the Simulator.
Domain: NSPOSIXErrorDomain
Code: 60
Failure Reason: launchd failed to respond.
User Info: {
DVTErrorCreationDateKey = "2025-06-29 06:16:35 +0000";
IDERunOperationFailingWorker = "_IDEInstalliPhoneSimulatorWorker";
Session = "com.apple.CoreSimulator.SimDevice.134EC197-BA6B-45DF-B5B2-61A1D4F14863";
}
--
Failed to start launchd_sim: could not bind to session, launchd_sim may have crashed or quit responding
Domain: com.apple.SimLaunchHostService.RequestError
Code: 4
--
Analytics Event: com.apple.dt.IDERunOperationWorkerFinished : {
"device_model" = "iPhone15,2";
"device_osBuild" = "16.2 (20C52)";
"device_platform" = "com.apple.platform.iphonesimulator";
"launchSession_schemeCommand" = Run;
"launchSession_state" = 1;
"launchSession_targetArch" = "x86_64";
"operation_duration_ms" = 8341;
"operation_errorCode" = 60;
"operation_errorDomain" = NSPOSIXErrorDomain;
"operation_errorWorker" = "_IDEInstalliPhoneSimulatorWorker";
"operation_name" = IDERunOperationWorkerGroup;
"param_consoleMode" = 0;
"param_debugger_attachToExtensions" = 0;
"param_debugger_attachToXPC" = 1;
"param_debugger_type" = 3;
"param_destination_isProxy" = 0;
"param_destination_platform" = "com.apple.platform.iphonesimulator";
"param_diag_MainThreadChecker_stopOnIssue" = 0;
"param_diag_MallocStackLogging_enableDuringAttach" = 0;
"param_diag_MallocStackLogging_enableForXPC" = 1;
"param_diag_allowLocationSimulation" = 1;
"param_diag_checker_tpc_enable" = 1;
"param_diag_gpu_frameCapture_enable" = 0;
"param_diag_gpu_shaderValidation_enable" = 0;
"param_diag_gpu_validation_enable" = 0;
"param_diag_memoryGraphOnResourceException" = 0;
"param_diag_queueDebugging_enable" = 1;
"param_diag_runtimeProfile_generate" = 0;
"param_diag_sanitizer_asan_enable" = 0;
"param_diag_sanitizer_tsan_enable" = 0;
"param_diag_sanitizer_tsan_stopOnIssue" = 0;
"param_diag_sanitizer_ubsan_stopOnIssue" = 0;
"param_diag_showNonLocalizedStrings" = 0;
"param_diag_viewDebugging_enabled" = 1;
"param_diag_viewDebugging_insertDylibOnLaunch" = 1;
"param_install_style" = 0;
"param_launcher_UID" = 2;
"param_launcher_allowDeviceSensorReplayData" = 0;
"param_launcher_kind" = 0;
"param_launcher_style" = 0;
"param_launcher_substyle" = 0;
"param_runnable_appExtensionHostRunMode" = 0;
"param_runnable_productType" = "com.apple.product-type.application";
"param_runnable_type" = 2;
"param_testing_launchedForTesting" = 0;
"param_testing_suppressSimulatorApp" = 0;
"param_testing_usingCLI" = 0;
"sdk_canonicalName" = "iphonesimulator16.2";
"sdk_osVersion" = "16.2";
"sdk_variant" = iphonesimulator;
}
--
System Information
macOS Version 12.7.1 (Build 21G920)
Xcode 14.2 (21534) (Build 14C18)
Timestamp: 2025-06-29T08:16:35+02:00
I filed a bug report: FB18475006
Just testing an existing app with Xcode 26.
I notice that content of UIBarButtonItem (either text or image) disappears when tapped (and reappear on release).
Those are custom, bordered buttons.
Attribute inspector:
Buttons in Xcode:
When selected in Xcode, we see a rectangle inside the rounder rect of iOS 26
In simulator:
When tapped in simulator:
I have edited code from
backButton.setTitleTextAttributes([
.font : boldFont,
.foregroundColor : UIColor.systemBlue,
], for: .normal)
to
backButton.setTitleTextAttributes([
.font : boldFont,
.foregroundColor : UIColor.systemBlue,
], for: [.normal, .focused, .selected, .highlighted])
to no avail.
What am I missing ?
Is it only me (or a localisation issue in french) or is there a bug in the submission form (buttons titles):
But acceptance (dark blue button) works as intended.
I tried to post a reply to a thread. It seems to be posted, but does not appear in the thread once sent…