Hello! Recently, the following crash issue began to occur. 0 libswiftCore.dylib 0x000000019ffaa3c8 closure #1 in closure #1 in closure #1 in _assertionFailure+ 238536 (_:_:file:line:flags:) + 228 1 libswiftCore.dylib 0x000000019ffaa2a0 closure #1 in closure #1 in _assertionFailure+ 238240 (_:_:file:line:flags:) + 332 2 libswiftCore.dylib 0x000000019ffa9c2c _assertionFailure+ 236588 (_:_:file:line:flags:) + 184 3 libswiftCore.dylib 0x000000019ffac4fc specialized BidirectionalCollection._index+ 247036 (_:offsetBy:) + 1280 4 libswiftCore.dylib 0x00000001a016d630 String.UTF16View._indexRange+ 2086448 (for:from:) + 184 5 libswiftCore.dylib 0x00000001a018561c __StringStorage.getCharacters+ 2184732 (_:range:) + 112 6 libswiftCore.dylib 0x00000001a0185720 @objc __StringStorage.getCharacters+ 2184992 (_:range:) + 36 7 CoreFoundation 0x00000001a16893e0 __CFStringEncodeByteStream + 1864 8 Foundation 0x00000001a0527c94 -[NSString+ 208020 (NSStringOtherEncodings) getBytes:maxLength:usedLength:encoding:options:range:remainingRange:] + 260 ... It seems like assert is being called. Can you tell me a case that could be the cause? Also, this is a code I have been using for a long time, but recently it started crashing. Have there been any internal changes recently? Please understand that the entire crash log cannot be attached for security reasons. Any help would be greatly appreciated!

I have a customer who wants to protect the REST API of their app with a private certificate. They would then distribute the client certificate to the authorized users. Their app would not work unless the client certificate is already installed on the user's phone before they run the app. I have never done this before. Is it possible to install a client certificate on an iPhone without running an app, for example if it were sent in an email message? And if it is possible, is App Review going to let such an app into the app store? Thanks, Frank

AppTrackingTransparency popup not show on iOS17.4.1 Some devices can, while others cannot

I have tried to insert 1L key-values into the user defaults. It is working fine until 50k key-values. After some time, am getting Not updating lastKnownShmemState in CFPrefsPlistSource<0x2825b0c60> (Domain: peformance_validator, User: kCFPreferencesCurrentUser, ByHost: No, Container: (null), Contents Need Refresh: No) also, key-values are not updating in the plist as well. peformance_validator is my user defaults group name. How can I solve this ?

Hi, I am having this rare issues, where a handful of my users are crashing when trying to access their realm file. This is the error I'm seeing: Fatal error: 'try!' expression unexpectedly raised an error: Error Domain=io.realm Code=3 "Failed to open file at path '/var/mobile/Containers/Data/Application/BCA5E4BC-5923-4D7E-8142-AB49B32A7E59/Documents/default.realm.lock': Operation not permitted" UserInfo={Error Code=3, NSFilePath=/var/mobile/Containers/Data/Application/BCA5E4BC-5923-4D7E-8142-AB49B32A7E59/Documents/default.realm.lock, Error Name=PermissionDenied, NSLocalizedDescription=Failed to open file at path '/var/mobile/Containers/Data/Application/BCA5E4BC-5923-4D7E-8142-AB49B32A7E59/Documents/default.realm.lock': Operation not permitted} and I can report that for all for those users, it seems that identiferForVendor has returned nil. So it looks like that's the common denominator. Any idea on what other data I can log or what's the issue here? Thanks..!

NSString *jsonString = @"{\"key1\":\"value1\",\"key2\":\"value2\",\"key3\":\"value3\",\"key4\":\"value4\"}"; NSString *jsonString2 = @"{\"key2\":\"value2\",\"key1\":\"value1\",\"key4\":\"value4\",\"key3\":\"value3\"}"; NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding]; NSData *jsonData2 = [jsonString2 dataUsingEncoding:NSUTF8StringEncoding]; NSDictionary *dict1 = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil]; NSDictionary *dict2 = [NSJSONSerialization JSONObjectWithData:jsonData2 options:NSJSONReadingMutableContainers error:nil]; The expected results are： dict1:key1,key2,key3,key4 dict2:key2,key1,key4,key3 Is there any way to make that happen?

Hi I Download my app from test flight, when i click submit button to a backend call. App expects to get back with the response from the backend, to take to next pages. But the app seems to be stuck waiting for the backend response. No error messages seen. i am sure the backend call is blocked from the test flight version. Same code works well from emulator and the physical device from local and from Google PlayStore. Only the test flight is the problem. I am sure i messed up some settings , My Info.plist has as in below, can anyone please help. NSAppTransportSecurity NSPinnedNetworkSecurityItems MyBundleName NSIncludesSubdomains NSAllowsArbitraryLoads NSPinnedCAIdentities SPKI-SHA256-BASE64 THEKEY

Xcode Version 15.0.1 (15A507) Crash log Hardware Model: iPhone14,7 Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] OS Version: iPhone OS 16.6 (20G75) Release Type: User Baseband Version: 1.80.02 Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Triggered by Thread: 26 Application Specific Information: abort() called Last Exception Backtrace: 0 CoreFoundation 0x1b3c54cb4 __exceptionPreprocess + 164 1 libobjc.A.dylib 0x1accf03d0 objc_exception_throw + 60 2 Foundation 0x1adf6950c -[NSData(NSData) _base64EncodingAsString:withOptions:] + 1072 3 Foundation 0x1ae2cf8bc Data.base64EncodedString(options:) + 640 ... 6 libdispatch.dylib 0x1bb11a320 _dispatch_call_block_and_release + 32 7 libdispatch.dylib 0x1bb11beac _dispatch_client_callout + 20 8 libdispatch.dylib 0x1bb11ef8c _dispatch_queue_override_invoke + 788 9 libdispatch.dylib 0x1bb12d944 _dispatch_root_queue_drain + 396 10 libdispatch.dylib 0x1bb12e158 _dispatch_worker_thread2 + 164 11 libsystem_pthread.dylib 0x213a85da0 _pthread_wqthread + 228 Thread 26 name: Dispatch queue: com.apple.root.default-qos Thread 26 Crashed: 0 libsystem_kernel.dylib 0x1f2c11578 __pthread_kill + 8 1 libsystem_pthread.dylib 0x213a8c118 pthread_kill + 268 2 libsystem_c.dylib 0x1bb17c178 abort + 180 3 libc++abi.dylib 0x2139cabf8 abort_message + 132 4 libc++abi.dylib 0x2139ba444 demangling_terminate_handler() + 348 5 libobjc.A.dylib 0x1accf5ea4 _objc_terminate() + 144 6 libc++abi.dylib 0x2139c9fbc std::__terminate(void (*)()) + 16 7 libc++abi.dylib 0x2139c9f60 std::terminate() + 56 8 libdispatch.dylib 0x1bb11bec0 _dispatch_client_callout + 40 9 libdispatch.dylib 0x1bb11ef8c _dispatch_queue_override_invoke + 788 10 libdispatch.dylib 0x1bb12d944 _dispatch_root_queue_drain + 396 11 libdispatch.dylib 0x1bb12e158 _dispatch_worker_thread2 + 164 12 libsystem_pthread.dylib 0x213a85da0 _pthread_wqthread + 228 13 libsystem_pthread.dylib 0x213a85b7c start_wqthread + 8 12 libsystem_pthread.dylib 0x213a85b7c start_wqthread + 8 My code private func encodeStringTo64(fromString: String) -> String? { let plainData = fromString.data(using: .utf8) return plainData?.base64EncodedString(options: []) } Call foundation method extension Data { ... /// Returns a Base-64 encoded string. /// /// - parameter options: The options to use for the encoding. Default value is `[]`. /// - returns: The Base-64 encoded string. @inlinable public func base64EncodedString(options: Data.Base64EncodingOptions = []) -> String } Description This foundation method don't have throws, but it throw an exception. It will cause a crash.

Im using Notions API to print out some data from one of my own pages in notion and im using URLSession to make the request then parsing the unwrapped data but nothing is being returned to my console and I know my endpoint and API key is correct. I've gone through the notion API documentation can't can't seem to find anything in it that I am not doing or doing wrong. Ill provide my code as well as the documentation I've been consulting: https://developers.notion.com/reference/intro import Foundation struct Page: Codable { let id: String let title: String } let endpoint = URL(string: "https://api.notion.com/v1/pages/8efc0ca3d9cc44fbb1f34383b794b817") let apiKey = "… redacted …" let session = URLSession.shared func makeRequest() { if let endpoint = endpoint { let task = URLSession.shared.dataTask(with: endpoint) { data, response, error in if let taskError = error { print("could not establish url request:\(taskError)") return } if let unwrapData = data { //safely unwrapping the data value using if let do { let decoder = JSONDecoder() //JSONDecoder method to decode api data, let codeUnwrappedData = try decoder.decode(Page.self,from: unwrapData) //type: specifies its a struct, from: passes the data parmeter that contains the api data to be decoded } catch { print("could not parse json data") } } if let httpResponse = response as? HTTPURLResponse { if httpResponse.statusCode == 200 { if let apiData = data { print(String(data: apiData, encoding: .utf8)!) } } else { print("unsuccessful http response:\(httpResponse)") } makeRequest() } } task.resume() } }

I recently re-read Performing manual server trust authentication and noticed that it does not mention having to call SecTrustEvaluate (or its replacements) in client code (anymore). Is that implicitly taken care of by ATS?

It seems that the first time I open my app after the phone is restarted, the app does not properly access UserDefaults. When my app is launched, I pull relevant user settings / preferences from UserDefaults. I recently noticed (after some users reached out about issues) that the first time the app is opened after a restart, the app appears as though all user settings / preferences have been erased. If the app is force quit and reopened, the user data seems to come back normally. If the user takes action in the app before force quitting, though, UserDefaults will be written to with these new, empty values (essentially erasing what used to be in UserDefaults). This makes it seem as though right after the phone is restarted, the app is unable to pull data from UserDefaults for some reason. Has anyone else seen this issue? It could also be due to the lifecycle of my app and how I access UserDefaults, so if others don't have this issue it would be great to hear how you handle this.

I have a file named ä.txt (with German umlaut) on my FTP server. I select it like this: let openPanel = NSOpenPanel() openPanel.runModal() let source = openPanel.urls[0] Running this code unexpectedly throws an error: do { print(try source.checkResourceIsReachable()) } catch { print(error) // Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory” } Manipulating the URL also seems to change the underlying characters: print(source) // file:///Volumes/abc.com/httpdocs/%C3%A4.txt print(URL(fileURLWithPath: source.path)) // file:///Volumes/abc.com/httpdocs/a%CC%88.txt Note that both variants of the URL above also throw the same error when running URL.checkResourceIsReachable(). If I download the file to my Mac, then both variants print file:///Users/me/Downloads/a%CC%88.txt and neither of them throws an error when running URL.checkResourceIsReachable(). What is the problem? How can I correctly access this file on the FTP server?

First of all, I decided to make my project with only UIKit. So I deleted 'Main' storyboard, Info.plist->Storyboard name, and Main storyboard file base name->Main. And I edited SceneDelegate. So now I can display the single viewControllers, but when I try to set 'UITabBarController' to rootViewController, It cause this error(title). I tried to make UITabBarController in ViewController, UITabBarController in SceneDelegate and some more. // BackgroundViewController for the rootViewController import UIKit class BackgroundViewController: UIViewController { let backgroundTabBarController = UITabBarController() override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .white createTabBar() } } extension BackgroundViewController { private func createTabBar() { view.backgroundColor = .white view.addSubview(backgroundTabBarController.view) let firstViewController = BookSearchViewController() let secondViewController = MainViewController() let thirdViewController = UserStatusViewController() let lastViewController = OrderViewController() firstViewController.tabBarItem = UITabBarItem(title: "Search", image: UIImage(systemName: "magnifyingglass.circle.fill"), selectedImage: UIImage(systemName: "magnifyingglass.circle")) secondViewController.tabBarItem = UITabBarItem(title: "Main", image: UIImage(systemName: "house.fill"), selectedImage: UIImage(systemName: "house")) thirdViewController.tabBarItem = UITabBarItem(title: "My", image: UIImage(systemName: "person.fill"), selectedImage: UIImage(systemName: "person")) lastViewController.tabBarItem = UITabBarItem(title: "Order", image: UIImage(systemName: "menucard.fill"), selectedImage: UIImage(systemName: "menucard")) backgroundTabBarController.viewControllers = [firstViewController, secondViewController, thirdViewController, lastViewController] backgroundTabBarController.selectedViewController = secondViewController } } // SceneDelegate import UIKit class SceneDelegate: UIResponder, UIWindowSceneDelegate { var window: UIWindow? func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { guard let windowScene = (scene as? UIWindowScene) else { return } window = UIWindow(windowScene: windowScene) window?.rootViewController = BackgroundViewController() window?.makeKeyAndVisible() } } // Error code Thread 1: "Could not find a storyboard named 'Main' in bundle NSBundle </Users/[MyDesktopName]/Library/Developer/CoreSimulator/Devices/[ApplicationName]/data/Containers/Bundle/Application/[ApplicationName]/BTY.app> (loaded)" But anyone of this solve the problem. How can I make UITabBarController to rootViewController? Make UITabBarController in SceneDelegate Make new UIViewController that have UITabBarController and set to rootViewController Set ViewControllers with 'UINavigationController(rootViewController:)' Present UITabBarController from other viewController

We use UserDefaults in our app to identify if we already showed a particular UI to the user (so that it will not be shown to the user again). Our logic goes something like: if !UserDefaults.standard.alreadyShownToUser { showUI() UserDefaults.standard.alreadyShownToUser = true } But there are users who see this particular screen again when they open the app. The screen does not show up for a few days, and then suddenly, it shows up again. Our theory is that this might have something to do with iOS Prewarming. So we updated our code to add another check: if UIApplication.shared.isProtectedDataAvailable && !UserDefaults.standard.alreadyShownToUser However, it does NOT seem to work / mitigate the issue at all. We also added logs to check the value of UIApplication.shared.isProtectedDataAvailable and the value of the UserDefaults variable. We expected that if: UIApplication.shared.isProtectedDataAvailable is false, then the UserDefaults value should also be false. But in our logs, we can see that UIApplication.shared.isProtectedDataAvailable is false, but UserDefaults still returned true. Which led me to think that UserDefaults is not affected by Prewarming. Now, I'm back from the start. What's causing our UserDefaults to have different value? We also do not have anywhere else in the app that sets the value of UserDefaults.standard.alreadyShownToUser to false. The only time it should have that value is when the user installs the app for the first time. I appreciate any help that can lead me to fix this issue. Thank you!