Overview

I'm experiencing an issue with WKWebView and localStorage. I've set up a standard WKWebView with the configuration: configuration.websiteDataStore = WKWebsiteDataStore.default() Everything works fine in the emulator (iOS 16.x, 17.0), but on my iPhone 13 running iOS 17.4, I encounter a problem. When I set a localStorage value on my local HTML page, navigate to another URL within the webview, and then return to the original page, the localStorage is cleared. This behavior is new and wasn't happening before. Has anyone else encountered this or have any suggestions on how to fix it? The localstorage should be persistent as it always has been.

I have noticed that my Apple Watch app seems to randomly quit from time to time. It's not crashing and I have not been able to reproduce it in a controlled setting, but have noticed that it seems to only happen when I'm in very high or low temperatures. For instance, I was skiing recently and my app was supposed to stay running the whole time, but often when I would raise my wrist it would be back on the home screen and my app wasn't running. This also happened when I was on the beach on a very hot day. But when I'm testing it at home I can keep it running for hours and it never crashes, which leads me to believe it may have to do with the temperature. Does the OS kill apps when it's running in very high or low temperatures? If so, is there anything I can do to prevent this from occurring? Would doing less things in my app possibly prevent this? For instance, I have a timer, and use a bunch of sensors, would turning those off at times and using less of the display make a difference or does the OS not care what the apps are actually doing? If not, any other ideas? Thanks

Hello everyone, I hope you’re all doing well. I have a question regarding the use of Apple's Find My network. I’m in the early stages of developing an app that would track third-party Find My-compatible tags. Before proceeding further, I want to ensure that I am compliant with Apple’s guidelines and policies. Can anyone provide insight into whether Apple allows developers to use the Find My crowd-sourced network for their own apps? Specifically, I'm interested in tracking third-party Find My tags through my app. Any guidance or resources you can share would be greatly appreciated! Thank you!

I have built the app on xcode and deployed it on my ios device. I am using a personal team account using my apple id. It is an xcode managed profile. I go to VPN & Device Management and accept the developer which works, but then when I hit "Verify App" there is a blink and nothing happens and no error code. I have fine internet I am able to access websites and I do not have a VPN.

Hi, I am new to Swift and would like to write a simple Swift script to show some HDR images or video on my VisionPro. I tried to find some code online as shown in the attachment to put one HDR image and one SDR side by side, but it seems like not to take any HDR effect. Thanks in advance.

Recently, I have been using SwiftData as a data persistence tool in my new SwiftUI app. My app utilizes CLLocationManager for background location tracking to wake up the app and update SwiftData-related data. When the app is in the foreground or background, SwiftData's @Query can normally retrieve data. However, once the user manually terminates the app and it receives a location-based wake-up, SwiftData's @Query no longer retrieves data. I have looked through many resources and haven't found any similar documentation. I wonder if anyone can give me some suggestions?

I have an extremely straightforward situation where an @IBOutlet in a ViewController is connected to a property in an XIB file. I've been working with iOS apps for more than ten years, and done this about a million times. For some reason, the property becomes nil at some point after the view is loaded. I can check with the debugger to see that it is not nil at viewDidLoad, and there is nothing in my code that sets it to anything else. I added a custom setter and getter to the variable so that I could stop in the debugger when it gets set, and the setter only gets called once, with a non-nil value. I suspect that somehow, a different copy of my ViewController is getting instantiated, but when it does, there are no calls to any of the usual methods like viewDidLoad. In fact there is not even a call to the init method. I don't understand how this is possible.

Hey there, I'm from Bangladesh. I applied for the developer enrollment program weeks ago, and it's still showing as pending. I don't know why. It says, 'Your purchase may take up to 48 hours to process,' but it's been 2 weeks already. Any solutions?

If I set the capacity of the disk cache to less than 5MB, It doesn't work. Through the print statement, I checked that the value of the currentDiskUsage did not rise at all, and I also checked that the image has been making network requests every time because there is no cached data even if I shut down and run the app again. I'm simply wondering why this is happening. Also, I wonder what kind of eviction policy the disk cache follows. I was so curious that I tried to find out through the link [here], but there seems to be no implementation of disk cache at all. Below is the code I used. I'm attaching it together just in case. import UIKit protocol Cacheable { func getCachedResponse( for path: String, completion: @escaping (Result<Data, CacheError>) -> Void ) func save( for path: String, data: Data ) } final class CacheManager { static let shared = CacheManager() private let imageCache: URLCache init() { imageCache = URLCache( memoryCapacity: 4 * 1024 * 1024, // 4MB diskCapacity: 4 * 1024 * 1024 // 4MB ) } } extension CacheManager: Cacheable { func getCachedResponse( for path: String, completion: @escaping (Result<Data, CacheError>) -> Void ) { if let url = URL(string: path), let cachedResponse = imageCache.cachedResponse(for: URLRequest(url: url)) { completion(.success(cachedResponse.data)) return } completion(.failure(.noCachedResponse)) } func save( for path: String, data: Data ) { guard let url = URL(string: path) else { return } let response = URLResponse( url: url, mimeType: nil, expectedContentLength: 0, textEncodingName: nil ) if let uiImage = UIImage(data: data), let compressedData = uiImage.jpegData(compressionQuality: 0.8) { #if DEBUG let formmatter = ByteCountFormatter() formmatter.allowedUnits = [.useMB] formmatter.countStyle = .file print(""" === Original size: \(formmatter.string(fromByteCount: Int64(data.count))) === Cached size: \(formmatter.string(fromByteCount: Int64(compressedData.count))) """) #endif let cachedResponse = CachedURLResponse( response: response, data: compressedData ) imageCache.storeCachedResponse( cachedResponse, for: URLRequest(url: url) ) } } }

Hi, I am testing a consumable in-app purchase on my app, with a Sandbox account on an iPad device. The transaction was successful, as I saw "You're all set. Your purchase was successful. [Environment: Sandbox]. I set a break point in Xcode after the line await transaction.finish() in following code private func handle(transactionVerification result: VerificationResult ) async { switch result { case let .verified(transaction): guard let product = self.products.first(where: { $0.id == transaction.productID }) else { return } self.addPurchased(product) await transaction.finish() return. <----- breakpoint And I saw those property values for the transaction id UInt64 88*****848 originalID UInt64 437****2496 . Then I use the originalID value 437*****2496 in a server library call in node.js .... const environment = Environment.SANDBOX .... const client = new AppStoreServerAPIClient(encodedKey, keyId, issuerId, bundleId, environment) .... const response = await client.getTransactionInfo("4379072496") I got apiError: 4040010, errorMessage: 'Transaction id not found.' Could someone please tell me if I use the library call correctly with the right id? And why I got the error? Thank you very much! Kind regards, Shih-Chin Yang [Edited by Moderator]

Hello, can someone please explain to me how does SwiftUI TabView works "under the hood" , I don't understand why do all views in TabView get reinitialized each time I switch between tabs. Xcode Version 15.3, iOS 16+ Below is the code snippet : struct ScreenOne: View { init() { print("ScreenOne init called !") } var body: some View { Text("This is screen one!") } } struct ScreenTwo: View { init() { print("ScreenTwo init called !") } var body: some View { Text("This is screen two !") } } struct TabViewTest: View { @State var selectedIndex: Int = 1 var body: some View { TabView(selection: $selectedIndex) { ScreenOne() .tag(1) .tabItem { Text("Item 1") } ScreenTwo() .tag(2) .tabItem { Text("Item 2") } } // .onChange(of: selectedIndex) { oldValue, newValue in // // } // NOTE: When code above is uncommented // Screen one & Screen two initializers get called // each time switch to different tab occurs } } Snippet output with the commented out code : App loads Both print statements get called -> "ScreenOne init called ! & "ScreenTwo init called ! Switch between taps Nothing happens Snippet output with the uncommented code : App loads Both print statements get called -> ScreenOne init called ! & ScreenTwo init called ! Switch between taps Both print statements get called -> ScreenOne init called ! & ScreenTwo init called ! @eskimo heeelp :) Thanks in advance !

Hi, i have been noticing some strange issues with using CoreML models in my app. I am using the Whisper.cpp implementation which has a coreML option. This speeds up the transcribing vs Metal. However every time i use it, the app size inside iphone settings -> General -> Storage increases - specifically the "documents and data" part, the bundle size stays consistent. The Size of the app seems to increase by the same size of the coreml model, and after a few reloads it can increase to over 3-4gb! I thought that maybe the coreml model (which is in the bundle) is being saved to file - but i can't see where, i have tried to use instruments and xcode plus lots of printing out of cache and temp directory etc, deleting the caches etc.. but no effect. I have downloaded the container of the iphone from xcode and inspected it, there are some files stored inthe cache but only a few kbs, and even though the value in the settings-> storage shows a few gb, the container is only a few mb. Please can someone help or give me some guidance on what to do to figure out why the documents and data is increasing? where could this folder be pointing to that is not in the xcode downloaded container?? This is the repo i am using https://github.com/ggerganov/whisper.cpp the swiftui app and objective-C app both do the same thing i am witnessing when using coreml. Thanks in advance for any help, i am totally baffled by this behaviour

Hi, I am testing an consumable in-app purchase for my app on an iPad, whenever I select to purchase, it always shows "For testing purpose only. You will not be charged for confirming this purchase.". Then I touch the blue Purchase button. It instantly shows "Done", then alerts "You're all set. Your purchase was successful. [Environment: Xcode]. It never asks me to enter a Sandbox account. I followed the instructions on "Testing in-app purchases with sandbox" page, but I can not find the sandbox account in Settings > App Store. I expected to see [Environment: Sandbox] so I could get the transaction id for App Store Server API. My iPadOS version is 17.4.1. My Xcode version is 15.1 and I use StoreKit with SwiftUI view. Can someone please shed some light on why I always get [Environment: Xcode]? I googled a lot, the process to test with Sandbox seems to be straightforward, But I just could not get it right. Thank you very much! KInd Regards, Shih-Chin Yang

Hi guys, I'm investigating failure to play low latency Live HLS stream and I'm getting following error: (String) “<AVPlayerItemErrorLog: 0x30367da10>\n#Version: 1.0\n#Software: AppleCoreMedia/1.0.0.21L227 (Apple TV; U; CPU OS 17_4 like Mac OS X; en_us)\n#Date: 2024/05/17 13:11:46.046\n#Fields: date time uri cs-guid s-ip status domain comment cs-iftype\n2024/05/17 13:11:16.016 https://s2-h21-nlivell01.cdn.xxxxxx.***/..../xxxx.m3u8 -15410 \“CoreMediaErrorDomain\” \“Low Latency: Server must support http2 ECN and SACK\” -\n2024/05/17 13:11:17.017 -15410 \“CoreMediaErrorDomain\” \“Invalid server blocking reload behavior for low latency\” -\n2024/05/17 13:11:17.017 The stream works when loading from dev server with TLS 1.3, but fails on CDN servers with TLS 1.2. Regular Live streams and VOD streams work normally on those CDN servers. I tried to configure TLSv1.2 in Info.plist, but that didn't help. When running nscurl --ats-diagnostics --verbose it is passing for the server with TLS 1.3, but failing for CDN servers with TLS 1.2 due to error Code=-1005 "The network connection was lost." Is TLS 1.3 required or just recommended? Refering to https://developer.apple.com/documentation/http-live-streaming/enabling-low-latency-http-live-streaming-hls and https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis Is it possible to configure AVPlayer to skip ECN and SACK validation? Thanks.

Our app is a time reporting service with various functions around that. The user checks in at work, checks out when they go home. We thought it'd be useful to provide a live activity to show how long they have worked for. There is also a couple of other cool things we could do that users would love, but i couldn't find definitive answers to the questions below. 1. We have a geofence-based function that checks the user in when they for example arrive at work, and check them out when they go home, so that they don't have to open the app. However, this means that we will need to start and end the live activity from within a geofence trigger. Is this possible? 2. It seems that the maximum time for a live activity is 8 hours? Sometimes people work for longer... How would we solve this? i would be fine with 12 since it would solve most cases. Is it possible somehow to go beyond 8 hours up to 12? If not, is there a callback that "8 hours are up!" so that i could do a final update on the live activity from a counter to "you started working at 09:04" 3. I have seen that some live activities have buttons. It would be neat if the user can check out via a button on the live activity. However, since we take location and call our servers when checking out, we need to be able to use both the locationmanager and make a network call from the live activity. Is this possible? Thanks in advance, Cheers

good morning everyone, I have a problem of understanding, my app unlocks content after registration, we offer a trial period of xx days to allow new users to use the full version at the end of these days if they want to continue using the full app they have to register without any payment. The app release documentation mentions a xx-day trial period in the Payments section: Apps without a subscription may offer a free time-based trial period before presenting a full unlock option by configuring a non-consumable IAP item at price level 0 that follows the naming convention: “XX-day trial.” Prior to the start of the trial period, the app must clearly identify the duration, content or services that will no longer be accessible at the end of the trial period, and any downstream costs that the user will have to pay for full functionality. should we also use the IAP method even though there is never any mention of purchase but only registration ? thank you in advance for your help

We started to see some crashes in our iOS app a few seconds after launch with the following reason: Exception Type: EXC_CRASH (SIGILL) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: SIGNAL 4 Illegal instruction: 4 when calling [NSPersistentContainer loadPersistentStoresWithCompletionHandler:]. I've looked through Understanding the exception types in a crash report page, but couldn't find this type there. Any ideas what could it be?

Hi everyone, I created an IAP When I filled a the information in the require database, my internet was broken. When the internet in working normally, I create it again (I didn't save it before I lost my internet) The system reported an error "The Product ID you entered is already being used by another in-app purchase associated with this app." Question: Why can't I reuse a Product ID that I haven't saved before? Please reply to me soon, Thank you so much

We have trying to programmatically send data to Final Cut Pro by using Apple Event as decribed in Sending Data Programmatically to Final Cut Pro : tell application "Final Cut Pro" activate open POSIX file "/Users/JohnDoe/Documents/UberMAM/MyEvents.fcpxml" end tell This works fine in Script Editor but we run into problems when trying to do the same in our macOS app. We found interesting information in Workflow Extensions SDK 1.0.2 Release Notes.pdf. A) Hardened runtime has "Apple Events Enabled" checked. B) Info.plist contains NSAppleEventsUsageDescription: <key>NSAppleEventsUsageDescription</key> <string>Test string</string> C) We added following entitlements: <key>com.apple.security.scripting-targets</key> <dict> <key>com.apple.FinalCut</key> <array> <string>com.apple.FinalCut.library.inspection</string> </array> <key>com.apple.FinalCutTrial</key> <array> <string>com.apple.FinalCut.library.inspection</string> </array> </dict> <key>com.apple.security.automation.apple-events</key> <true/> With this configuration in place, our app is able to call AppleScript to activate Final Cut Pro application but it is unable to open the file. Following error is returned: Error executing AppleScript: { NSAppleScriptErrorAppName = "Final Cut Pro Trial"; NSAppleScriptErrorBriefMessage = "A privilege violation occurred."; NSAppleScriptErrorMessage = "Final Cut Pro Trial got an error: A privilege violation occurred."; NSAppleScriptErrorNumber = "-10004"; NSAppleScriptErrorRange = "NSRange: {56, 64}"; } Also there is no prompt asking user to allow Automation from our app to Final Cut. I am not sure whether the prompt is to be expected when developing an application in Xcode. Our current workaround is to add (or even replace com.apple.security.scripting-targets with): com.apple.security.temporary-exception.apple-events entitlement like this <key>com.apple.security.temporary-exception.apple-events</key> <array> <key>com.apple.FinalCutTrial</key> </array> However while this approach might work in development we know this would probably prevent us from publishing the app to Mac App Store. I think we are missing something obvious. Could you help? :-)

I recently converted a Core Data app to use CloudKit. Before the conversion, the sqlite file was around 25MB. After the conversion, the file grew to over one gigabyte. I ran sqlite3_analyzer on the new file and found that a single table, ANSCKRECORDMETADATA, used 95% of the storage, 998MB. Is this to be expected? I confess that the conversion was a bit bumpy. Maybe I did something to create a monstrosity. If not expected, should I revert to the old Core Data file, create a new CloudKit container, and repeat the conversion.