Delve into the world of built-in app and system services available to developers. Discuss leveraging these services to enhance your app's functionality and user experience.

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Universal link not working
My ASA file is located here https://staging.docyt.com/apple-appsite-association It downloads fine. It does not have .json extension and neither does it reside inside the ./well-known folder. Should it work? Because opening the link https://staging.docyt.com/reset-password is not opening the app installed via TestFlight . Installing via XCode however works fine. Please help
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899
Apr ’25
Inquiry About Deferred Deep Link Limitation and Alternative Options
Dear Apple Support Team, I hope this message finds you well. I’m reaching out to inquire about the limitations of deferred deep linking within iOS applications. Specifically, I’m interested in understanding the constraints and challenges that prevent deferred deep links from functioning as expected in certain scenarios (e.g., when the app is not installed or other related issues). Additionally, I would like to ask if there are any recommended alternative approaches or solutions to implement deep linking, ensuring that users can still be directed to specific content or screens even if they need to install the app first. Your insights and guidance would be greatly appreciated as I work to enhance the user experience in my app. Thank you for your time and assistance. Best regards, Santosh
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1.2k
Apr ’25
Crash on iOS: UIKitCore -[UIApplication _run] with CFRunLoopRun
Hello everyone, I’m experiencing a crash in my iOS application that’s occurring predominantly on devices running iOS 16.6.0. The crash seems to happen on the main thread during a UI operation, specifically within the UIKitCore framework. Crash Log Summary Thread 0 Crashed: 0 libsystem_kernel.dylib 0xca4 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x13b74 mach_msg2_internal + 80 2 libsystem_kernel.dylib 0x13e4c mach_msg_overwrite + 540 3 libsystem_kernel.dylib 0x11e8 mach_msg + 24 4 CoreFoundation 0x79024 __CFRunLoopServiceMachPort + 160 5 CoreFoundation 0x7a250 __CFRunLoopRun + 1208 6 CoreFoundation 0x7f3ec CFRunLoopRunSpecific + 612 7 GraphicsServices 0x135c GSEventRunModal + 164 8 UIKitCore 0x39cf58 -[UIApplication _run] + 888 9 UIKitCore 0x39cbbc UIApplicationMain + 340 10 MyApp 0x24050 main + 51 (AppDelegate.swift:51) 11 ??? 0x1d3594dec (Missing) I’ve attached the full crash crashlog.txt and would appreciate any insights or recommendations on how to resolve this issue.
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1.4k
Apr ’25
How do I handle force-quit in Swift
How do I handle force quit in Swift? I received crash reports during a tesflight test. I didn't understand what it was: none of my app's symbols were present, and Xcode didn't want them either... unlike two others who were very specific. By doing a few Google queries, I saw that [UIApplication _terminateWithStatus:] + 136 (UIApplication.m:7578). Accompanied by a SIGSEV... corresponded to a simple thing: it's a crash during a force quit. I tested it with two iPhones, connected to my Mac, and launched the app from Xcode on each of them. I waited a bit, then quit it. It immediately went into the background and waited to launch operations with BackgroundTaskManager. I went to the app carousel and quit it with a swipe of my finger. I immediately see in the log that "sceneDidDisconnect" from SceneDelegate is called... then the immediate crash occurs, with the same elements as those received during the test flight crashlog.crash : SIGSEV and [UIApplication _terminateWithStatus:] and identical elements thereafter. And this applies regardless of what I put in "SceneDidDisconnect," a print, and something to close the BGtasks if they are running (but iOS should normally kill them too, right?) .. 1 or 2 secondes after it crashes. At the moment of the crash, the Xcode cursor is positioned on "class Appdelegate" in AppDelegate. class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate { My question is: how do I handle force quit in Swift? I have another Objective-C application that does the same thing and runs identical operations in the background. If I force quit it, there is no crash.
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166
Apr ’25
LiveCommunicationKit
What I want to achieve now is that when the app is not running, upon receiving a notification, it displays an interface similar to CallKit with accept and decline buttons. Here is part of my code: @available(iOS 17.4, *) class LiveCommunicationManager: NSObject, ConversationManagerDelegate { static let shared = LiveCommunicationManager() var isInvalidate:Bool = false var configuration: ConversationManager! override init() { let config = ConversationManager.Configuration( ringtoneName: "notes_of_the_optimistic", iconTemplateImageData: UIImage(named: "AppIcon")?.pngData(), // 图标的 PNG 数据 maximumConversationGroups: 1, // 最大对话组数 maximumConversationsPerConversationGroup: 1, // 每个对话组内最大对话数 includesConversationInRecents: false, // 是否在通话记录中显示 supportsVideo: false, // 是否支持视频 supportedHandleTypes: [.generic,.phoneNumber,.emailAddress] // 支持的通话类型 ) configuration = ConversationManager.init(configuration: config) } func reportIncomingCall(uuid: UUID, callerName: String) { configuration.delegate = self let local = Handle(type: .generic, value: callerName, displayName: callerName) let update = Conversation.Update(localMember: local,members: [local],activeRemoteMembers: [local]) Task{ do { try await configuration.reportNewIncomingConversation(uuid: uuid, update: update) print("成功报告新来电") } catch { print("报告新来电失败: \(error.localizedDescription)") } } } func conversationManager(_ manager: ConversationManager, conversationChanged conversation: Conversation) { print("会话状态改变了") } func conversationManagerDidBegin(_ manager: ConversationManager) { print("会话已经开始了") manager.delegate = self } func conversationManagerDidReset(_ manager: ConversationManager) { print("会话将要清除了") } func conversationManager(_ manager: ConversationManager, perform action: ConversationAction) { print("会话接听了") configuration.invalidate() } func conversationManager(_ manager: ConversationManager, timedOutPerforming action: ConversationAction) { print("会话超时了") } func conversationManager(_ manager: ConversationManager, didActivate audioSession: AVAudioSession) { print("会话激活了") } func conversationManager(_ manager: ConversationManager, didDeactivate audioSession: AVAudioSession) { print("会话死亡了") } } 在Appdelegate里设置了这些: func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) { // 在这里处理离线推送通知 completionHandler(.noData) // 返回后台任务完成 if let aps = userInfo["aps"] as? [String: Any], let alert = aps["alert"] as? [String : Any]{ // 静默推送的处理逻辑 if #available(iOS 17.4, *) { let manager = LiveCommunicationManager.shared if manager.isInvalidate { return } if let msgType = userInfo["msgType"] as? Int{ if msgType == 5{ manager.configuration.invalidate() }else{ let callerName = alert["title"] as? String ?? "Fanvil" manager.reportIncomingCall(uuid: UUID(), callerName: callerName) } } } } } Xcode has been configured with the necessary capabilities, such as Background Fetch, Voice over IP, Background Processing, and Push Notification. The issue now is that sometimes the code works as expected, allowing the app to wake up when not running and displaying the system interface with accept and decline buttons. However, after a few successful attempts, the app stops waking up, and no notification appears. But when I manually open the app, the didReceiveRemoteNotification method gets triggered. I’d like to know why this stops working after a few times.
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252
Apr ’25
Family Controls Approved for Main App but Not Extension – Blocking
Hi everyone, I’m developing a screen-time and focus app that uses Apple’s Family Controls framework to block distracting apps and reward users through a gamified experience. Apple approved Family Controls (Distribution) for the main app identifier, but they did not approve the required extension target (which implements DeviceActivityMonitor, required for the framework to function). Because of this, I can’t archive or upload the app to TestFlight — and I’ve been stuck in limbo for over 2 months. This is severely delaying my launch. The app works perfectly, but I can’t release it because the extension wasn’t included in the entitlement approval. Has anyone else run into this with Family Controls? Is there any known way to escalate or fast-track approval for additional app IDs or targets? Would really appreciate any help, advice, or hacks. 🙏 Thanks, Enzer
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117
Apr ’25
I encountered some problems while developing the default translation app.
Simulator device failed to install the application. Domain: IXErrorDomain Code: 2 Failure Reason: Invalid placeholder attributes. User Info: { DVTErrorCreationDateKey = "2025-04-01 17:20:32 +0000"; FunctionName = "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; IDERunOperationFailingWorker = IDELaunchiPhoneSimulatorLauncher; SimCallingSelector = "installApplication:withOptions:error:"; SourceFileLine = 981; } Failed to create app extension placeholder for /Users/eddiepeng/Library/Developer/Xcode/DerivedData/Omnit-bjygrdfdoommzzcnbjuvwoakvdkw/Build/Products/Release-iphonesimulator/Omnit.app/PlugIns/OmnitTranslationExtension.appex Domain: IXErrorDomain Code: 2 Failure Reason: Failed to create promise. User Info: { FunctionName = "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; SourceFileLine = 981; } Failed to set placeholder attributes top.delta17.Omnit.OmnitTranslationExtension Domain: IXErrorDomain Code: 2 Failure Reason: Failed to create promise. User Info: { FunctionName = "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; SourceFileLine = 818; } extensionDictionary must be set in placeholder attributes for an app extension placeholder Domain: IXErrorDomain Code: 17 Failure Reason: Invalid placeholder attributes. User Info: { FunctionName = "-[IXPlaceholder setPlaceholderAttributes:error:]"; SourceFileLine = 1999; } Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "E645E32D-57B1-4A24-95A4-6BFD0062F51D"; "device_model" = "iPhone17,3"; "device_osBuild" = "18.4 (22E238)"; "device_platform" = "com.apple.platform.iphonesimulator"; "device_thinningType" = "iPhone17,3"; "dvt_coredevice_version" = "443.19"; "dvt_coresimulator_version" = "1010.10"; "dvt_mobiledevice_version" = "1784.102.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 38; "operation_errorCode" = 2; "operation_errorDomain" = IXErrorDomain; "operation_errorWorker" = IDELaunchiPhoneSimulatorLauncher; "operation_name" = IDERunOperationWorkerGroup; "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_113575882_enable" = 0; "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_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 1; "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_enable" = 0; "param_diag_sanitizer_ubsan_stopOnIssue" = 0; "param_diag_showNonLocalizedStrings" = 0; "param_diag_viewDebugging_enabled" = 1; "param_diag_viewDebugging_insertDylibOnLaunch" = 1; "param_install_style" = 2; "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_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphonesimulator18.4"; "sdk_osVersion" = "18.4"; "sdk_variant" = iphonesimulator; } System Information macOS Version 15.3.2 (Build 24D81) Xcode 16.3 (23785) (Build 16E140) Timestamp: 2025-04-02T01:20:32+08:00
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125
Apr ’25
Add MacOs Finder compatible Quicklook Extension for custom file types to Mac Catalyst App
I have an iOS app which has an embedded Quicklook Extension that works perfectly - in the Files app on iPad/iPhone I can QuickLook view and edit custom file types without problems. However, when I run the app on a Silicon Mac using Mac Catalyst (or (Made For iPad)) while the Finder does recognise the custom file types (allowing "Open in…" or double-clicking to open) it does not show the Quick Look extension. How do I add Finder QuickLook extension functionality to a Mac Catalyst app? Thanks
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162
Apr ’25
Xcode 16.2 App Crashes Due to Missing NSMotionUsageDescription Key in Info.plist
There is a crash while running the project in Xcode 16.2. The project has been using CMPedometer and CoreMotion since 2020. I wonder: I did not have the NSMotionUsageDescription key added, why is it mandatory to add this key now? “This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSMotionUsageDescription key with a string value explaining to the user how the app uses this data.”
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620
Apr ’25
App Crashes on iPhone 15 Pro and iPhone 16 After App Store Installation
Hello everyone, I'm experiencing an issue with my app, and I would greatly appreciate any guidance. Here's the situation: My app works flawlessly on the simulator for all iPhone models (16, 16 Pro, 16 Pro Max, SE, etc.). It runs without issues on physical iPhone 11 devices (both mine and a friend's). However, when my friend installs the app from the App Store on their iPhone 15 Pro or iPhone 16, it crashes immediately upon opening. Steps I’ve taken so far: Verified that the app works on the simulator for the same models where it crashes in real life. Updated the app's minimum deployment target to iOS 18, but this did not resolve the issue. The app still crashes on the physical iPhone 15 Pro and 16 models while continuing to run fine on previous physical devices and all simulated ones. Additionally, I had another friend beta test the app through TestFlight on their iPhone 15 Pro, and they received an alert message indicating that the app had crashed when they tried to open it. This confirms the issue still exists after my attempted fixes. I'm unsure what could be causing this discrepancy between the simulated and physical devices, or what the alert message in TestFlight might signify. Has anyone encountered a similar issue, or does anyone have suggestions on what I should do to fix this? Thanks in advance for your help!
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402
Apr ’25
Defining custom file types
On iOS:When one receives a file of type .pages by email, Mail displays a large Pages icon and tapping on it opens Pages. (A long-press brings up the more complicated Actions screen).When one receives a file of type .vcf by email, Mail displays a large Contacts icon and tapping on it opens Contacts. (A long-press brings up the more complicated Actions screen).I have my own custom file type, .ripf, and I want to have the same behaviour because that is what my users will expect. Accordingly, in my app's Info.plist I have a CFBundleDocumentTypes dictionary providing a one-element LSItemContentTypes array referring to the name 'com.universalis.ripcard', and a UTExportedTypeDeclarations dictionary associating the UTTypeIdentifier 'com.universalis.ripcard' with a public.filename-extension 'ripf' and a public.mime-type 'text/vnd.universalis.ripcard'. All the other entries in those two dictionaries are present and correct as far as I can tell. Both CFBundleDocumentTypes[0].CFBundleTypeIconFiles and UTExportedTypeDeclarations[0].UTTypeIconFiles contain a list of icon files for the file type.(That rather long paragraph is to avoid boring people by including the entire Info.plist!)Some things do work..ripf files received via AirDrop bring up a suitable "Open with..." message which mentions my app, and tapping the message opens the app..ripf files received as an email attachment display as an icon. But it is the app's icon and not the icon of the file type.BUTTapping on a received file's icon does not open the app, but only opens the generic Actions screen, offering Message, Mail, WhatsApp, Notes, and only then (after the user has scrolled sideways) "Copy to..." my app.Now, the whole apparatus of CFBundleDocumentTypes and UTExportedTypeDeclarations is obscure and under-documented, and indeed the main documenation for the latter has a big warning at the top saying that it is obsolete and not being updated. That doesn't matter so much. What I need to know is:(Less important): How do I get the right file icon?(More important): How do I get my app to open when the icon is tapped, as Pages and Contacts do? There must be a way – unless special cases for those two apps are wired into iOS itself.
10
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6.5k
Apr ’25
date(byAdding:value:to:options:) Method Behaves Strangely
Let’s try calculating one day after "2023/11/04 12:00 New York time". let timeZone = TimeZone(identifier: "America/New_York")! var calendar = Calendar(identifier: .gregorian) calendar.timeZone = timeZone var dateFormatter = DateFormatter() dateFormatter.timeZone = timeZone dateFormatter.locale = .init(identifier: "ja_JP") dateFormatter.dateStyle = .short dateFormatter.timeStyle = .short var dateComponents = DateComponents() dateComponents.year = 2023 dateComponents.month = 11 dateComponents.day = 4 dateComponents.hour = 12 // At New York 2023/11/04 12:00 let date1 = calendar.date(from: dateComponents)! print(dateFormatter.string(from: date1)) // Add 1 day let date2 = calendar.date(byAdding: .day, value: 1, to: date1)! print(dateFormatter.string(from: date2))``` The output is: 2023/11/04 12:00 2023/11/05 12:00 Now, let’s try the following—also to get the time one day later: let date2 = calendar.date(byAdding: .minute, value: 24 * 60, to: date1)! print(dateFormatter.string(from: date2)) This outputs: 2023/11/04 12:00 2023/11/05 11:00 What's Causing This Difference? It’s likely due to Daylight Saving Time (DST). But why do we get different results between the first and second examples?
1
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231
Apr ’25
Issues with Siri Shortcuts: Confirmation Prompt, Inconsistent Behavior
Hello Apple Developer Community, I’m working on integrating Siri into my React Native app using native iOS code and bridging to React Native. I’ve followed the necessary steps to set up Siri support, including: Adding the Siri capability. Adding Siri usage descriptions in Info.plist. Using AppIntent and AppShortcutsProvider to define shortcuts. However, I’m facing the following issues: Siri Prompts for Confirmation When a user says a phrase, Siri asks, "Turn on 'MyApp' shortcuts with Siri?" instead of directly recognizing the phrase. Is this expected behavior? If so, how can I reduce friction for users and make the experience more seamless? Inconsistent Behavior for Existing Users For users updating to a version with Siri support: When the app is closed, Siri says, "MyApp hasn't added support for that with Siri." When the app is open, Siri prompts, "Turn on shortcut for MyApp?" and rest all working fine Why does Siri not recognize the shortcut when the app is closed, even though the shortcut is defined in AppShortcutsProvider? How can I ensure that Siri recognizes the shortcut regardless of whether the app is open or closed? Other than using AppIntent and AppShortcutsProvider should i try Donating shortcuts(will that helps for updated user case). Please help me on this
8
1
632
Apr ’25
How to implement normal loading of web content when I intercept all request header information using the Swizzling method
I am developing a web application, I hope to be able to intercept all requests in the loaded web page, match the network request I want to specifically intercept the network request and then obtain the request header information (not the user's personal privacy data interception), if the use is the method of injection, the request header information is incomplete, such as the more important "content-type" field in the request header, so I try to use Swizzling method to intercept all http and https requests, and I can now intercept all the request information. But there is still a problem with my project, when loading x.com, logging in, appearing white screen after the successful landing, and not loading to the page after the successful landing, I don't know where the reason is。 Below is my core code implementation fragment. import WebKit // MARK: - WebViewController class WebViewController: UIViewController { fileprivate var webView: WKWebView! private var schemeHandler: WWKProxyWKURLSchemeHandler! override func viewDidLoad() { super.viewDidLoad() Self.initSwizzling setupWebView() loadInitialContent() } private func setupWebView() { let config = WKWebViewConfiguration() schemeHandler = WWKProxyWKURLSchemeHandler() config.setURLSchemeHandler(self.schemeHandler, forURLScheme: "https") config.setURLSchemeHandler(self.schemeHandler, forURLScheme: "http") webView = WKWebView(frame: view.bounds, configuration: config) webView.autoresizingMask = [.flexibleWidth, .flexibleHeight] view.addSubview(webView) } private func loadInitialContent() { if let url = URL(string: "https://x.com") { let request = URLRequest(url: url,cachePolicy:.reloadIgnoringLocalCacheData,timeoutInterval: 15) webView.load(request) } } func reloadWebView() { webView?.reloadFromOrigin() } } class WWKProxyWKURLSchemeHandler: NSObject, WKURLSchemeHandler { private let lock = NSLock() private var activeTasks = [ObjectIdentifier: URLSessionDataTask]() func webView(_ webView: WKWebView, start urlSchemeTask: WKURLSchemeTask) { lock.lock() defer { lock.unlock() } let taskID = ObjectIdentifier(urlSchemeTask) guard !activeTasks.keys.contains(taskID) else { print("⚠️ Task already started: \(urlSchemeTask.request.url?.absoluteString ?? "")") return } print("Intercepted URL---:",urlSchemeTask.request.url?.absoluteString ?? "") print("All requests intercepted----:",urlSchemeTask.request.allHTTPHeaderFields) let request = urlSchemeTask.request let dataTask = URLSession.shared.dataTask(with: request) { [weak self] data, response, error in guard let self = self else { return } self.lock.lock() let isActive = self.activeTasks[taskID] != nil self.lock.unlock() guard isActive else { print("🌀 Task already cancelled: \(urlSchemeTask.request.url?.absoluteString ?? "")") return } // Make sure it only handles once guard self.activeTasks.keys.contains(taskID) else { return } self.activeTasks.removeValue(forKey: taskID) DispatchQueue.main.async { if let error = error { urlSchemeTask.didFailWithError(error) print("🔴 Task failed: \(urlSchemeTask.request.url?.absoluteString ?? "") - \(error.localizedDescription)") return } guard let response = response, let data = data else { urlSchemeTask.didFailWithError(URLError(.unknown)) print("🔴 Invalid response: \(urlSchemeTask.request.url?.absoluteString ?? "")") return } urlSchemeTask.didReceive(response) urlSchemeTask.didReceive(data) urlSchemeTask.didFinish() print("🟢 Task completed: \(urlSchemeTask.request.url?.absoluteString ?? "")") } } self.activeTasks[taskID] = dataTask dataTask.resume() } func webView(_ webView: WKWebView, stop task: WKURLSchemeTask) {} private func finishTask(taskID: ObjectIdentifier ,task: WKURLSchemeTask, response: URLResponse?, data: Data?, error: Error?) { lock.lock() defer { lock.unlock() } guard activeTasks.keys.contains(taskID) else { return } activeTasks.removeValue(forKey: taskID) DispatchQueue.main.async { if let error = error { task.didFailWithError(error) print("🔴 Task failed: \(task.request.url?.absoluteString ?? "") - \(error.localizedDescription)")return} guard let response = response, let data = data else { task.didFailWithError(URLError(.unknown)) print("🔴 Invalid response: \(task.request.url?.absoluteString ?? "")") return } task.didReceive(response) task.didReceive(data) task.didFinish() print("🟢 Task completed: \(task.request.url?.absoluteString ?? "")") } } } extension WKWebView { @objc dynamic class func qm_handlesURLScheme(_ urlScheme: String) -> Bool { if urlScheme == "https" || urlScheme == "http" {return false} return self.qm_handlesURLScheme(urlScheme) } // Exchange of execution methods static func setupSwizzling() { let originalSelector = #selector(handlesURLScheme(_:)) let swizzledSelector = #selector(qm_handlesURLScheme(_:)) // Implemented by Runtime Get Method guard let originalMethod = class_getClassMethod(WKWebView.self, originalSelector), let swizzledMethod = class_getClassMethod(WKWebView.self, swizzledSelector) else { return } // Implementation of Exchange Methods method_exchangeImplementations(originalMethod, swizzledMethod) } } extension WebViewController { private static let initSwizzling: Void = { DispatchQueue.once(token: "com.webview.swizzling") { WKWebView.setupSwizzling() } }() } // GCD Once extension DispatchQueue { private static var tokens = Set<String>() class func once(token: String, block: () -> Void) { objc_sync_enter(self) defer { objc_sync_exit(self) } guard !tokens.contains(token) else { return } tokens.insert(token) block() } } extension WebViewController: WKNavigationDelegate { func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { decisionHandler(.allow) } }
1
0
102
Apr ’25
macOS 15.1 MFMailComposeViewController.canSendMail() returns false always
In my Catalyst app I use func setupMailComposer() { // Check if the device can send email guard MFMailComposeViewController.canSendMail() else { print("Mail services are not available") showMailErrorAlert() return } // Create and configure the mail composer let mailComposeVC = MFMailComposeViewController() mailComposeVC.mailComposeDelegate = self // Set the email details mailComposeVC.setToRecipients(["example@example.com"]) mailComposeVC.setSubject("Subject for your email") mailComposeVC.setMessageBody("This is the body of the email.", isHTML: false) // Attach a file (optional) if let filePath = Bundle.main.path(forResource: "example", ofType: "pdf"), let fileData = try? Data(contentsOf: URL(fileURLWithPath: filePath)) { mailComposeVC.addAttachmentData(fileData, mimeType: "application/pdf", fileName: "example.pdf") } // Present the mail composer self.present(mailComposeVC, animated: true, completion: nil) } Since I have updated to macOS 15.1 the canSendMail() function returns false although I have configured Apple Mail (like before in 15.0 where it worked flawlessly).
4
1
546
Apr ’25
Calling [NSUserDefaults objectForKey:] crashes as it attempts to insert nil object into dictionary
Hi, I work at OneSignal, a third-party SDK, and have the following two crash reports submitted by a client for the same issue. Because the crash originates from our SDK, even if the root cause may be elsewhere, the onus is on our team to try to resolve this crash. Additionally, my information is limited as this is not our own crash report. I'm trying to figure out why this crash happens and how we can address it within our SDK. Crash Reported: Fatal Exception: NSInvalidArgumentException [NSMutableDictionary __addObject:forKey:]: object cannot be nil Context: Our SDK makes a call to [NSUserDefaults(NSUserDefaults) objectForKey:] on the standardUserDefaults and passes in a non-null key. It appears further up the call stack, a null value is being added to a dictionary. I assume this is the innards of how the search list is generated. Additional Information: The client states that it seems to happen only once per user and the scale is not extremely high but it is increasing. They are unsure what happened and when. They don't have much information about the devices except it has happened on iOS 18. Log 1: 0 CoreFoundation 0x2d5fc __exceptionPreprocess 1 libobjc.A.dylib 0x31244 objc_exception_throw 2 CoreFoundation 0x15548 -[NSMutableDictionary __addObject:forKey:] 3 CoreFoundation 0x20850 -[__NSDictionaryM __apply:context:] 4 CoreFoundation 0x54700 ___CFPrefsDeliverPendingKVONotificationsGuts_block_invoke 5 CoreFoundation 0x52988 __CFDictionaryApplyFunction_block_invoke 6 CoreFoundation 0x52524 CFBasicHashApply 7 CoreFoundation 0x21040 CFDictionaryApplyFunction 8 CoreFoundation 0x7a6b0 _CFPrefsDeliverPendingKVONotificationsGuts 9 CoreFoundation 0x777d0 -[_CFXPreferences _deliverPendingKVONotifications] 10 CoreFoundation 0x776ac __108-[_CFXPreferences(SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke 11 CoreFoundation 0x5cf24 normalizeQuintuplet 12 CoreFoundation 0x5cd60 -[_CFXPreferences withSearchListForIdentifier:container:cloudConfigurationURL:perform:] 13 CoreFoundation 0x5cc60 -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] 14 CoreFoundation 0x5c8bc _CFPreferencesCopyAppValueWithContainerAndConfiguration 15 Foundation 0xf0dcc -[NSUserDefaults(NSUserDefaults) objectForKey:] 16 OneSignalCore 0xc7c8 -[OneSignalUserDefaults keyExists:] + 61 (OneSignalUserDefaults.m:61) 17 OneSignalCore 0xc8b0 -[OneSignalUserDefaults getSavedBoolForKey:defaultValue:] + 70 (OneSignalUserDefaults.m:70) 18 OneSignalCore 0xbb10 +[OSPrivacyConsentController requiresUserPrivacyConsent] + 59 (OSPrivacyConsentController.m:59) 19 OneSignalCore 0xbc30 +[OSPrivacyConsentController shouldLogMissingPrivacyConsentErrorWithMethodName:] + 75 (OSPrivacyConsentController.m:75) 20 OneSignalCore 0x4418 +[OneSignalConfigManager shouldAwaitAppIdAndLogMissingPrivacyConsentForMethod:] + 50 (OneSignalConfigManager.m:50) 21 OneSignalOSCore 0x537c OSOperationRepo.flushDeltaQueue(inBackground:) + 140 (OSOperationRepo.swift:140) 22 OneSignalOSCore 0x4868 closure #1 in OSOperationRepo.pollFlushQueue() + 84 (OSOperationRepo.swift:84) 23 OneSignalOSCore 0x5078 thunk for @escaping @callee_guaranteed @Sendable () -&gt; () 24 libdispatch.dylib 0x3fa8 _dispatch_client_callout 25 libdispatch.dylib 0x745c _dispatch_continuation_pop 26 libdispatch.dylib 0x1b620 _dispatch_source_latch_and_call 27 libdispatch.dylib 0x1a1e8 _dispatch_source_invoke 28 libdispatch.dylib 0xb42c _dispatch_lane_serial_drain 29 libdispatch.dylib 0xc124 _dispatch_lane_invoke 30 libdispatch.dylib 0x1738c _dispatch_root_queue_drain_deferred_wlh 31 libdispatch.dylib 0x16bd8 _dispatch_workloop_worker_thread 32 libsystem_pthread.dylib 0x3680 _pthread_wqthread 33 libsystem_pthread.dylib 0x1474 start_wqthread Log 2: Fatal Exception: NSInvalidArgumentException 0 CoreFoundation 0x2d5fc __exceptionPreprocess 1 libobjc.A.dylib 0x31244 objc_exception_throw 2 CoreFoundation 0x15548 -[NSMutableDictionary __addObject:forKey:] 3 CoreFoundation 0x168f0 __72-[CFPrefsSource mergeIntoDictionary:sourceDictionary:cloudKeyEvaluator:]_block_invoke 4 CoreFoundation 0x23ecc -[__NSFrozenDictionaryM __apply:context:] 5 CoreFoundation 0x4f82c -[CFPrefsSource mergeIntoDictionary:sourceDictionary:cloudKeyEvaluator:] 6 CoreFoundation 0x783b8 -[CFPrefsSearchListSource alreadylocked_getDictionary:] 7 CoreFoundation 0x77dfc -[CFPrefsSearchListSource alreadylocked_copyValueForKey:] 8 CoreFoundation 0x77d30 -[CFPrefsSource copyValueForKey:] 9 CoreFoundation 0x77ce4 __76-[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:]_block_invoke 10 CoreFoundation 0x77690 __108-[_CFXPreferences(SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke 11 CoreFoundation 0x5cf24 normalizeQuintuplet 12 CoreFoundation 0x5cd60 -[_CFXPreferences withSearchListForIdentifier:container:cloudConfigurationURL:perform:] 13 CoreFoundation 0x5cc60 -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] 14 CoreFoundation 0x5c8bc _CFPreferencesCopyAppValueWithContainerAndConfiguration 15 Foundation 0xf0dcc -[NSUserDefaults(NSUserDefaults) objectForKey:] 16 OneSignalCore 0xc7c8 -[OneSignalUserDefaults keyExists:] + 61 (OneSignalUserDefaults.m:61) 17 OneSignalCore 0xcbd8 -[OneSignalUserDefaults getSavedDoubleForKey:defaultValue:] + 107 (OneSignalUserDefaults.m:107) 18 OneSignalFramework 0x8964 +[OneSignal shouldStartNewSession] + 350 (OneSignal.m:350) 19 OneSignalFramework 0xc968 +[OneSignalTracker applicationBecameActive] + 83 (OneSignalTracker.m:83) 20 OneSignalFramework 0xb894 -[OneSignalLifecycleObserver didBecomeActive] + 84 (OneSignalLifecycleObserver.m:84) ...... 55 UIKitCore 0x3ee674 -[UIApplication _run] 56 UIKitCore 0x14e88 UIApplicationMain 57 UnityFramework 0x399aef0 -[UnityFramework runUIApplicationMainWithArgc:argv:] + 96 (main.mm:96) 58 ClientsApp 0x412c main + 28 (main.mm:28)
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147
Apr ’25
How to Set Up Deferred Deep Linking
I have universal links configured for my iOS app which work as expected when the app is installed. When the app is not installed the universal link will go to the browser as expected. What I want to do is redirect to the app store, allow the user to install the app, then redirect them to the initial universal link. Redirecting them to the app store isn't the hard part I can achieve that from the webpage, however I don't know how to save a reference to that initial link to redirect them once they instal the app. What I want the flow to be for a user who doesn't have the app is: visit a universal link (example.com/UUID) redirect to the app store and install the app open the app and redirect to example.com/UUID I've seen some ways people are doing this with the clipboard but I don't love that solution, I also don't want to use a 3rd party service if I can avoid it - how are the 3rd party services making this happen?
4
5
4.8k
Apr ’25
Message Filter Extension Not Triggering on iPhone 12 Pro (iOS 16.7) but Works on iPhone 11 (iOS 16.6)
Hi Team, We’re encountering a device-specific issue with our SMS Message Filter extension. The extension works as expected on an iPhone 11 running iOS 16.6, but it does not trigger on an iPhone 12 Pro running iOS 16.7. Key Observations: The extension is implemented using ILMessageFilterExtension and calls messageFilterOffline(appGroupIdentifier:for:) from our shared library. The App Group is properly configured and accessible across the app and extension. The extension is enabled under Settings &gt; Messages &gt; Unknown &amp; Spam. There are no crashes or error logs reported on the affected device. The issue is consistently reproducible — it works on one device but not the other. We’re wondering if this could be a regression or a device-specific behavior change introduced in iOS 16.7. Has anyone encountered similar inconsistencies in Message Filter extensions across different iOS versions or device models? Any guidance or suggestions would be greatly appreciated. Thanks in advance!
0
0
160
Apr ’25
Universal link not working
My ASA file is located here https://staging.docyt.com/apple-appsite-association It downloads fine. It does not have .json extension and neither does it reside inside the ./well-known folder. Should it work? Because opening the link https://staging.docyt.com/reset-password is not opening the app installed via TestFlight . Installing via XCode however works fine. Please help
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5
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899
Activity
Apr ’25
Inquiry About Deferred Deep Link Limitation and Alternative Options
Dear Apple Support Team, I hope this message finds you well. I’m reaching out to inquire about the limitations of deferred deep linking within iOS applications. Specifically, I’m interested in understanding the constraints and challenges that prevent deferred deep links from functioning as expected in certain scenarios (e.g., when the app is not installed or other related issues). Additionally, I would like to ask if there are any recommended alternative approaches or solutions to implement deep linking, ensuring that users can still be directed to specific content or screens even if they need to install the app first. Your insights and guidance would be greatly appreciated as I work to enhance the user experience in my app. Thank you for your time and assistance. Best regards, Santosh
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4
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5
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1.2k
Activity
Apr ’25
Crash on iOS: UIKitCore -[UIApplication _run] with CFRunLoopRun
Hello everyone, I’m experiencing a crash in my iOS application that’s occurring predominantly on devices running iOS 16.6.0. The crash seems to happen on the main thread during a UI operation, specifically within the UIKitCore framework. Crash Log Summary Thread 0 Crashed: 0 libsystem_kernel.dylib 0xca4 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x13b74 mach_msg2_internal + 80 2 libsystem_kernel.dylib 0x13e4c mach_msg_overwrite + 540 3 libsystem_kernel.dylib 0x11e8 mach_msg + 24 4 CoreFoundation 0x79024 __CFRunLoopServiceMachPort + 160 5 CoreFoundation 0x7a250 __CFRunLoopRun + 1208 6 CoreFoundation 0x7f3ec CFRunLoopRunSpecific + 612 7 GraphicsServices 0x135c GSEventRunModal + 164 8 UIKitCore 0x39cf58 -[UIApplication _run] + 888 9 UIKitCore 0x39cbbc UIApplicationMain + 340 10 MyApp 0x24050 main + 51 (AppDelegate.swift:51) 11 ??? 0x1d3594dec (Missing) I’ve attached the full crash crashlog.txt and would appreciate any insights or recommendations on how to resolve this issue.
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2
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1
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1.4k
Activity
Apr ’25
How do I handle force-quit in Swift
How do I handle force quit in Swift? I received crash reports during a tesflight test. I didn't understand what it was: none of my app's symbols were present, and Xcode didn't want them either... unlike two others who were very specific. By doing a few Google queries, I saw that [UIApplication _terminateWithStatus:] + 136 (UIApplication.m:7578). Accompanied by a SIGSEV... corresponded to a simple thing: it's a crash during a force quit. I tested it with two iPhones, connected to my Mac, and launched the app from Xcode on each of them. I waited a bit, then quit it. It immediately went into the background and waited to launch operations with BackgroundTaskManager. I went to the app carousel and quit it with a swipe of my finger. I immediately see in the log that "sceneDidDisconnect" from SceneDelegate is called... then the immediate crash occurs, with the same elements as those received during the test flight crashlog.crash : SIGSEV and [UIApplication _terminateWithStatus:] and identical elements thereafter. And this applies regardless of what I put in "SceneDidDisconnect," a print, and something to close the BGtasks if they are running (but iOS should normally kill them too, right?) .. 1 or 2 secondes after it crashes. At the moment of the crash, the Xcode cursor is positioned on "class Appdelegate" in AppDelegate. class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate { My question is: how do I handle force quit in Swift? I have another Objective-C application that does the same thing and runs identical operations in the background. If I force quit it, there is no crash.
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166
Activity
Apr ’25
LiveCommunicationKit
What I want to achieve now is that when the app is not running, upon receiving a notification, it displays an interface similar to CallKit with accept and decline buttons. Here is part of my code: @available(iOS 17.4, *) class LiveCommunicationManager: NSObject, ConversationManagerDelegate { static let shared = LiveCommunicationManager() var isInvalidate:Bool = false var configuration: ConversationManager! override init() { let config = ConversationManager.Configuration( ringtoneName: "notes_of_the_optimistic", iconTemplateImageData: UIImage(named: "AppIcon")?.pngData(), // 图标的 PNG 数据 maximumConversationGroups: 1, // 最大对话组数 maximumConversationsPerConversationGroup: 1, // 每个对话组内最大对话数 includesConversationInRecents: false, // 是否在通话记录中显示 supportsVideo: false, // 是否支持视频 supportedHandleTypes: [.generic,.phoneNumber,.emailAddress] // 支持的通话类型 ) configuration = ConversationManager.init(configuration: config) } func reportIncomingCall(uuid: UUID, callerName: String) { configuration.delegate = self let local = Handle(type: .generic, value: callerName, displayName: callerName) let update = Conversation.Update(localMember: local,members: [local],activeRemoteMembers: [local]) Task{ do { try await configuration.reportNewIncomingConversation(uuid: uuid, update: update) print("成功报告新来电") } catch { print("报告新来电失败: \(error.localizedDescription)") } } } func conversationManager(_ manager: ConversationManager, conversationChanged conversation: Conversation) { print("会话状态改变了") } func conversationManagerDidBegin(_ manager: ConversationManager) { print("会话已经开始了") manager.delegate = self } func conversationManagerDidReset(_ manager: ConversationManager) { print("会话将要清除了") } func conversationManager(_ manager: ConversationManager, perform action: ConversationAction) { print("会话接听了") configuration.invalidate() } func conversationManager(_ manager: ConversationManager, timedOutPerforming action: ConversationAction) { print("会话超时了") } func conversationManager(_ manager: ConversationManager, didActivate audioSession: AVAudioSession) { print("会话激活了") } func conversationManager(_ manager: ConversationManager, didDeactivate audioSession: AVAudioSession) { print("会话死亡了") } } 在Appdelegate里设置了这些: func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -&gt; Void) { // 在这里处理离线推送通知 completionHandler(.noData) // 返回后台任务完成 if let aps = userInfo["aps"] as? [String: Any], let alert = aps["alert"] as? [String : Any]{ // 静默推送的处理逻辑 if #available(iOS 17.4, *) { let manager = LiveCommunicationManager.shared if manager.isInvalidate { return } if let msgType = userInfo["msgType"] as? Int{ if msgType == 5{ manager.configuration.invalidate() }else{ let callerName = alert["title"] as? String ?? "Fanvil" manager.reportIncomingCall(uuid: UUID(), callerName: callerName) } } } } } Xcode has been configured with the necessary capabilities, such as Background Fetch, Voice over IP, Background Processing, and Push Notification. The issue now is that sometimes the code works as expected, allowing the app to wake up when not running and displaying the system interface with accept and decline buttons. However, after a few successful attempts, the app stops waking up, and no notification appears. But when I manually open the app, the didReceiveRemoteNotification method gets triggered. I’d like to know why this stops working after a few times.
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252
Activity
Apr ’25
Family Controls Approved for Main App but Not Extension – Blocking
Hi everyone, I’m developing a screen-time and focus app that uses Apple’s Family Controls framework to block distracting apps and reward users through a gamified experience. Apple approved Family Controls (Distribution) for the main app identifier, but they did not approve the required extension target (which implements DeviceActivityMonitor, required for the framework to function). Because of this, I can’t archive or upload the app to TestFlight — and I’ve been stuck in limbo for over 2 months. This is severely delaying my launch. The app works perfectly, but I can’t release it because the extension wasn’t included in the entitlement approval. Has anyone else run into this with Family Controls? Is there any known way to escalate or fast-track approval for additional app IDs or targets? Would really appreciate any help, advice, or hacks. 🙏 Thanks, Enzer
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117
Activity
Apr ’25
I encountered some problems while developing the default translation app.
Simulator device failed to install the application. Domain: IXErrorDomain Code: 2 Failure Reason: Invalid placeholder attributes. User Info: { DVTErrorCreationDateKey = "2025-04-01 17:20:32 +0000"; FunctionName = "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; IDERunOperationFailingWorker = IDELaunchiPhoneSimulatorLauncher; SimCallingSelector = "installApplication:withOptions:error:"; SourceFileLine = 981; } Failed to create app extension placeholder for /Users/eddiepeng/Library/Developer/Xcode/DerivedData/Omnit-bjygrdfdoommzzcnbjuvwoakvdkw/Build/Products/Release-iphonesimulator/Omnit.app/PlugIns/OmnitTranslationExtension.appex Domain: IXErrorDomain Code: 2 Failure Reason: Failed to create promise. User Info: { FunctionName = "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; SourceFileLine = 981; } Failed to set placeholder attributes top.delta17.Omnit.OmnitTranslationExtension Domain: IXErrorDomain Code: 2 Failure Reason: Failed to create promise. User Info: { FunctionName = "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; SourceFileLine = 818; } extensionDictionary must be set in placeholder attributes for an app extension placeholder Domain: IXErrorDomain Code: 17 Failure Reason: Invalid placeholder attributes. User Info: { FunctionName = "-[IXPlaceholder setPlaceholderAttributes:error:]"; SourceFileLine = 1999; } Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "E645E32D-57B1-4A24-95A4-6BFD0062F51D"; "device_model" = "iPhone17,3"; "device_osBuild" = "18.4 (22E238)"; "device_platform" = "com.apple.platform.iphonesimulator"; "device_thinningType" = "iPhone17,3"; "dvt_coredevice_version" = "443.19"; "dvt_coresimulator_version" = "1010.10"; "dvt_mobiledevice_version" = "1784.102.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 38; "operation_errorCode" = 2; "operation_errorDomain" = IXErrorDomain; "operation_errorWorker" = IDELaunchiPhoneSimulatorLauncher; "operation_name" = IDERunOperationWorkerGroup; "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_113575882_enable" = 0; "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_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 1; "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_enable" = 0; "param_diag_sanitizer_ubsan_stopOnIssue" = 0; "param_diag_showNonLocalizedStrings" = 0; "param_diag_viewDebugging_enabled" = 1; "param_diag_viewDebugging_insertDylibOnLaunch" = 1; "param_install_style" = 2; "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_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphonesimulator18.4"; "sdk_osVersion" = "18.4"; "sdk_variant" = iphonesimulator; } System Information macOS Version 15.3.2 (Build 24D81) Xcode 16.3 (23785) (Build 16E140) Timestamp: 2025-04-02T01:20:32+08:00
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3
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125
Activity
Apr ’25
Add MacOs Finder compatible Quicklook Extension for custom file types to Mac Catalyst App
I have an iOS app which has an embedded Quicklook Extension that works perfectly - in the Files app on iPad/iPhone I can QuickLook view and edit custom file types without problems. However, when I run the app on a Silicon Mac using Mac Catalyst (or (Made For iPad)) while the Finder does recognise the custom file types (allowing "Open in…" or double-clicking to open) it does not show the Quick Look extension. How do I add Finder QuickLook extension functionality to a Mac Catalyst app? Thanks
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2
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162
Activity
Apr ’25
Xcode 16.2 App Crashes Due to Missing NSMotionUsageDescription Key in Info.plist
There is a crash while running the project in Xcode 16.2. The project has been using CMPedometer and CoreMotion since 2020. I wonder: I did not have the NSMotionUsageDescription key added, why is it mandatory to add this key now? “This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSMotionUsageDescription key with a string value explaining to the user how the app uses this data.”
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1
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1
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620
Activity
Apr ’25
App Crashes on iPhone 15 Pro and iPhone 16 After App Store Installation
Hello everyone, I'm experiencing an issue with my app, and I would greatly appreciate any guidance. Here's the situation: My app works flawlessly on the simulator for all iPhone models (16, 16 Pro, 16 Pro Max, SE, etc.). It runs without issues on physical iPhone 11 devices (both mine and a friend's). However, when my friend installs the app from the App Store on their iPhone 15 Pro or iPhone 16, it crashes immediately upon opening. Steps I’ve taken so far: Verified that the app works on the simulator for the same models where it crashes in real life. Updated the app's minimum deployment target to iOS 18, but this did not resolve the issue. The app still crashes on the physical iPhone 15 Pro and 16 models while continuing to run fine on previous physical devices and all simulated ones. Additionally, I had another friend beta test the app through TestFlight on their iPhone 15 Pro, and they received an alert message indicating that the app had crashed when they tried to open it. This confirms the issue still exists after my attempted fixes. I'm unsure what could be causing this discrepancy between the simulated and physical devices, or what the alert message in TestFlight might signify. Has anyone encountered a similar issue, or does anyone have suggestions on what I should do to fix this? Thanks in advance for your help!
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1
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0
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402
Activity
Apr ’25
Defining custom file types
On iOS:When one receives a file of type .pages by email, Mail displays a large Pages icon and tapping on it opens Pages. (A long-press brings up the more complicated Actions screen).When one receives a file of type .vcf by email, Mail displays a large Contacts icon and tapping on it opens Contacts. (A long-press brings up the more complicated Actions screen).I have my own custom file type, .ripf, and I want to have the same behaviour because that is what my users will expect. Accordingly, in my app's Info.plist I have a CFBundleDocumentTypes dictionary providing a one-element LSItemContentTypes array referring to the name 'com.universalis.ripcard', and a UTExportedTypeDeclarations dictionary associating the UTTypeIdentifier 'com.universalis.ripcard' with a public.filename-extension 'ripf' and a public.mime-type 'text/vnd.universalis.ripcard'. All the other entries in those two dictionaries are present and correct as far as I can tell. Both CFBundleDocumentTypes[0].CFBundleTypeIconFiles and UTExportedTypeDeclarations[0].UTTypeIconFiles contain a list of icon files for the file type.(That rather long paragraph is to avoid boring people by including the entire Info.plist!)Some things do work..ripf files received via AirDrop bring up a suitable "Open with..." message which mentions my app, and tapping the message opens the app..ripf files received as an email attachment display as an icon. But it is the app's icon and not the icon of the file type.BUTTapping on a received file's icon does not open the app, but only opens the generic Actions screen, offering Message, Mail, WhatsApp, Notes, and only then (after the user has scrolled sideways) "Copy to..." my app.Now, the whole apparatus of CFBundleDocumentTypes and UTExportedTypeDeclarations is obscure and under-documented, and indeed the main documenation for the latter has a big warning at the top saying that it is obsolete and not being updated. That doesn't matter so much. What I need to know is:(Less important): How do I get the right file icon?(More important): How do I get my app to open when the icon is tapped, as Pages and Contacts do? There must be a way – unless special cases for those two apps are wired into iOS itself.
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10
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6.5k
Activity
Apr ’25
date(byAdding:value:to:options:) Method Behaves Strangely
Let’s try calculating one day after "2023/11/04 12:00 New York time". let timeZone = TimeZone(identifier: "America/New_York")! var calendar = Calendar(identifier: .gregorian) calendar.timeZone = timeZone var dateFormatter = DateFormatter() dateFormatter.timeZone = timeZone dateFormatter.locale = .init(identifier: "ja_JP") dateFormatter.dateStyle = .short dateFormatter.timeStyle = .short var dateComponents = DateComponents() dateComponents.year = 2023 dateComponents.month = 11 dateComponents.day = 4 dateComponents.hour = 12 // At New York 2023/11/04 12:00 let date1 = calendar.date(from: dateComponents)! print(dateFormatter.string(from: date1)) // Add 1 day let date2 = calendar.date(byAdding: .day, value: 1, to: date1)! print(dateFormatter.string(from: date2))``` The output is: 2023/11/04 12:00 2023/11/05 12:00 Now, let’s try the following—also to get the time one day later: let date2 = calendar.date(byAdding: .minute, value: 24 * 60, to: date1)! print(dateFormatter.string(from: date2)) This outputs: 2023/11/04 12:00 2023/11/05 11:00 What's Causing This Difference? It’s likely due to Daylight Saving Time (DST). But why do we get different results between the first and second examples?
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1
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231
Activity
Apr ’25
Issues with Siri Shortcuts: Confirmation Prompt, Inconsistent Behavior
Hello Apple Developer Community, I’m working on integrating Siri into my React Native app using native iOS code and bridging to React Native. I’ve followed the necessary steps to set up Siri support, including: Adding the Siri capability. Adding Siri usage descriptions in Info.plist. Using AppIntent and AppShortcutsProvider to define shortcuts. However, I’m facing the following issues: Siri Prompts for Confirmation When a user says a phrase, Siri asks, "Turn on 'MyApp' shortcuts with Siri?" instead of directly recognizing the phrase. Is this expected behavior? If so, how can I reduce friction for users and make the experience more seamless? Inconsistent Behavior for Existing Users For users updating to a version with Siri support: When the app is closed, Siri says, "MyApp hasn't added support for that with Siri." When the app is open, Siri prompts, "Turn on shortcut for MyApp?" and rest all working fine Why does Siri not recognize the shortcut when the app is closed, even though the shortcut is defined in AppShortcutsProvider? How can I ensure that Siri recognizes the shortcut regardless of whether the app is open or closed? Other than using AppIntent and AppShortcutsProvider should i try Donating shortcuts(will that helps for updated user case). Please help me on this
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8
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632
Activity
Apr ’25
NSPasteboard in System Extension
I am trying to access clipboard via NSPasteboard API from a System Extension. However, all of its get methods return empty arrays and nil objects. Is that expected? Is there some permission or entitlement required for a System Extension to access clipboard?
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2
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118
Activity
Apr ’25
How to implement normal loading of web content when I intercept all request header information using the Swizzling method
I am developing a web application, I hope to be able to intercept all requests in the loaded web page, match the network request I want to specifically intercept the network request and then obtain the request header information (not the user's personal privacy data interception), if the use is the method of injection, the request header information is incomplete, such as the more important "content-type" field in the request header, so I try to use Swizzling method to intercept all http and https requests, and I can now intercept all the request information. But there is still a problem with my project, when loading x.com, logging in, appearing white screen after the successful landing, and not loading to the page after the successful landing, I don't know where the reason is。 Below is my core code implementation fragment. import WebKit // MARK: - WebViewController class WebViewController: UIViewController { fileprivate var webView: WKWebView! private var schemeHandler: WWKProxyWKURLSchemeHandler! override func viewDidLoad() { super.viewDidLoad() Self.initSwizzling setupWebView() loadInitialContent() } private func setupWebView() { let config = WKWebViewConfiguration() schemeHandler = WWKProxyWKURLSchemeHandler() config.setURLSchemeHandler(self.schemeHandler, forURLScheme: "https") config.setURLSchemeHandler(self.schemeHandler, forURLScheme: "http") webView = WKWebView(frame: view.bounds, configuration: config) webView.autoresizingMask = [.flexibleWidth, .flexibleHeight] view.addSubview(webView) } private func loadInitialContent() { if let url = URL(string: "https://x.com") { let request = URLRequest(url: url,cachePolicy:.reloadIgnoringLocalCacheData,timeoutInterval: 15) webView.load(request) } } func reloadWebView() { webView?.reloadFromOrigin() } } class WWKProxyWKURLSchemeHandler: NSObject, WKURLSchemeHandler { private let lock = NSLock() private var activeTasks = [ObjectIdentifier: URLSessionDataTask]() func webView(_ webView: WKWebView, start urlSchemeTask: WKURLSchemeTask) { lock.lock() defer { lock.unlock() } let taskID = ObjectIdentifier(urlSchemeTask) guard !activeTasks.keys.contains(taskID) else { print("⚠️ Task already started: \(urlSchemeTask.request.url?.absoluteString ?? "")") return } print("Intercepted URL---:",urlSchemeTask.request.url?.absoluteString ?? "") print("All requests intercepted----:",urlSchemeTask.request.allHTTPHeaderFields) let request = urlSchemeTask.request let dataTask = URLSession.shared.dataTask(with: request) { [weak self] data, response, error in guard let self = self else { return } self.lock.lock() let isActive = self.activeTasks[taskID] != nil self.lock.unlock() guard isActive else { print("🌀 Task already cancelled: \(urlSchemeTask.request.url?.absoluteString ?? "")") return } // Make sure it only handles once guard self.activeTasks.keys.contains(taskID) else { return } self.activeTasks.removeValue(forKey: taskID) DispatchQueue.main.async { if let error = error { urlSchemeTask.didFailWithError(error) print("🔴 Task failed: \(urlSchemeTask.request.url?.absoluteString ?? "") - \(error.localizedDescription)") return } guard let response = response, let data = data else { urlSchemeTask.didFailWithError(URLError(.unknown)) print("🔴 Invalid response: \(urlSchemeTask.request.url?.absoluteString ?? "")") return } urlSchemeTask.didReceive(response) urlSchemeTask.didReceive(data) urlSchemeTask.didFinish() print("🟢 Task completed: \(urlSchemeTask.request.url?.absoluteString ?? "")") } } self.activeTasks[taskID] = dataTask dataTask.resume() } func webView(_ webView: WKWebView, stop task: WKURLSchemeTask) {} private func finishTask(taskID: ObjectIdentifier ,task: WKURLSchemeTask, response: URLResponse?, data: Data?, error: Error?) { lock.lock() defer { lock.unlock() } guard activeTasks.keys.contains(taskID) else { return } activeTasks.removeValue(forKey: taskID) DispatchQueue.main.async { if let error = error { task.didFailWithError(error) print("🔴 Task failed: \(task.request.url?.absoluteString ?? "") - \(error.localizedDescription)")return} guard let response = response, let data = data else { task.didFailWithError(URLError(.unknown)) print("🔴 Invalid response: \(task.request.url?.absoluteString ?? "")") return } task.didReceive(response) task.didReceive(data) task.didFinish() print("🟢 Task completed: \(task.request.url?.absoluteString ?? "")") } } } extension WKWebView { @objc dynamic class func qm_handlesURLScheme(_ urlScheme: String) -> Bool { if urlScheme == "https" || urlScheme == "http" {return false} return self.qm_handlesURLScheme(urlScheme) } // Exchange of execution methods static func setupSwizzling() { let originalSelector = #selector(handlesURLScheme(_:)) let swizzledSelector = #selector(qm_handlesURLScheme(_:)) // Implemented by Runtime Get Method guard let originalMethod = class_getClassMethod(WKWebView.self, originalSelector), let swizzledMethod = class_getClassMethod(WKWebView.self, swizzledSelector) else { return } // Implementation of Exchange Methods method_exchangeImplementations(originalMethod, swizzledMethod) } } extension WebViewController { private static let initSwizzling: Void = { DispatchQueue.once(token: "com.webview.swizzling") { WKWebView.setupSwizzling() } }() } // GCD Once extension DispatchQueue { private static var tokens = Set<String>() class func once(token: String, block: () -> Void) { objc_sync_enter(self) defer { objc_sync_exit(self) } guard !tokens.contains(token) else { return } tokens.insert(token) block() } } extension WebViewController: WKNavigationDelegate { func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { decisionHandler(.allow) } }
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Apr ’25
macOS 15.1 MFMailComposeViewController.canSendMail() returns false always
In my Catalyst app I use func setupMailComposer() { // Check if the device can send email guard MFMailComposeViewController.canSendMail() else { print("Mail services are not available") showMailErrorAlert() return } // Create and configure the mail composer let mailComposeVC = MFMailComposeViewController() mailComposeVC.mailComposeDelegate = self // Set the email details mailComposeVC.setToRecipients(["example@example.com"]) mailComposeVC.setSubject("Subject for your email") mailComposeVC.setMessageBody("This is the body of the email.", isHTML: false) // Attach a file (optional) if let filePath = Bundle.main.path(forResource: "example", ofType: "pdf"), let fileData = try? Data(contentsOf: URL(fileURLWithPath: filePath)) { mailComposeVC.addAttachmentData(fileData, mimeType: "application/pdf", fileName: "example.pdf") } // Present the mail composer self.present(mailComposeVC, animated: true, completion: nil) } Since I have updated to macOS 15.1 the canSendMail() function returns false although I have configured Apple Mail (like before in 15.0 where it worked flawlessly).
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Apr ’25
Calling [NSUserDefaults objectForKey:] crashes as it attempts to insert nil object into dictionary
Hi, I work at OneSignal, a third-party SDK, and have the following two crash reports submitted by a client for the same issue. Because the crash originates from our SDK, even if the root cause may be elsewhere, the onus is on our team to try to resolve this crash. Additionally, my information is limited as this is not our own crash report. I'm trying to figure out why this crash happens and how we can address it within our SDK. Crash Reported: Fatal Exception: NSInvalidArgumentException [NSMutableDictionary __addObject:forKey:]: object cannot be nil Context: Our SDK makes a call to [NSUserDefaults(NSUserDefaults) objectForKey:] on the standardUserDefaults and passes in a non-null key. It appears further up the call stack, a null value is being added to a dictionary. I assume this is the innards of how the search list is generated. Additional Information: The client states that it seems to happen only once per user and the scale is not extremely high but it is increasing. They are unsure what happened and when. They don't have much information about the devices except it has happened on iOS 18. Log 1: 0 CoreFoundation 0x2d5fc __exceptionPreprocess 1 libobjc.A.dylib 0x31244 objc_exception_throw 2 CoreFoundation 0x15548 -[NSMutableDictionary __addObject:forKey:] 3 CoreFoundation 0x20850 -[__NSDictionaryM __apply:context:] 4 CoreFoundation 0x54700 ___CFPrefsDeliverPendingKVONotificationsGuts_block_invoke 5 CoreFoundation 0x52988 __CFDictionaryApplyFunction_block_invoke 6 CoreFoundation 0x52524 CFBasicHashApply 7 CoreFoundation 0x21040 CFDictionaryApplyFunction 8 CoreFoundation 0x7a6b0 _CFPrefsDeliverPendingKVONotificationsGuts 9 CoreFoundation 0x777d0 -[_CFXPreferences _deliverPendingKVONotifications] 10 CoreFoundation 0x776ac __108-[_CFXPreferences(SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke 11 CoreFoundation 0x5cf24 normalizeQuintuplet 12 CoreFoundation 0x5cd60 -[_CFXPreferences withSearchListForIdentifier:container:cloudConfigurationURL:perform:] 13 CoreFoundation 0x5cc60 -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] 14 CoreFoundation 0x5c8bc _CFPreferencesCopyAppValueWithContainerAndConfiguration 15 Foundation 0xf0dcc -[NSUserDefaults(NSUserDefaults) objectForKey:] 16 OneSignalCore 0xc7c8 -[OneSignalUserDefaults keyExists:] + 61 (OneSignalUserDefaults.m:61) 17 OneSignalCore 0xc8b0 -[OneSignalUserDefaults getSavedBoolForKey:defaultValue:] + 70 (OneSignalUserDefaults.m:70) 18 OneSignalCore 0xbb10 +[OSPrivacyConsentController requiresUserPrivacyConsent] + 59 (OSPrivacyConsentController.m:59) 19 OneSignalCore 0xbc30 +[OSPrivacyConsentController shouldLogMissingPrivacyConsentErrorWithMethodName:] + 75 (OSPrivacyConsentController.m:75) 20 OneSignalCore 0x4418 +[OneSignalConfigManager shouldAwaitAppIdAndLogMissingPrivacyConsentForMethod:] + 50 (OneSignalConfigManager.m:50) 21 OneSignalOSCore 0x537c OSOperationRepo.flushDeltaQueue(inBackground:) + 140 (OSOperationRepo.swift:140) 22 OneSignalOSCore 0x4868 closure #1 in OSOperationRepo.pollFlushQueue() + 84 (OSOperationRepo.swift:84) 23 OneSignalOSCore 0x5078 thunk for @escaping @callee_guaranteed @Sendable () -&gt; () 24 libdispatch.dylib 0x3fa8 _dispatch_client_callout 25 libdispatch.dylib 0x745c _dispatch_continuation_pop 26 libdispatch.dylib 0x1b620 _dispatch_source_latch_and_call 27 libdispatch.dylib 0x1a1e8 _dispatch_source_invoke 28 libdispatch.dylib 0xb42c _dispatch_lane_serial_drain 29 libdispatch.dylib 0xc124 _dispatch_lane_invoke 30 libdispatch.dylib 0x1738c _dispatch_root_queue_drain_deferred_wlh 31 libdispatch.dylib 0x16bd8 _dispatch_workloop_worker_thread 32 libsystem_pthread.dylib 0x3680 _pthread_wqthread 33 libsystem_pthread.dylib 0x1474 start_wqthread Log 2: Fatal Exception: NSInvalidArgumentException 0 CoreFoundation 0x2d5fc __exceptionPreprocess 1 libobjc.A.dylib 0x31244 objc_exception_throw 2 CoreFoundation 0x15548 -[NSMutableDictionary __addObject:forKey:] 3 CoreFoundation 0x168f0 __72-[CFPrefsSource mergeIntoDictionary:sourceDictionary:cloudKeyEvaluator:]_block_invoke 4 CoreFoundation 0x23ecc -[__NSFrozenDictionaryM __apply:context:] 5 CoreFoundation 0x4f82c -[CFPrefsSource mergeIntoDictionary:sourceDictionary:cloudKeyEvaluator:] 6 CoreFoundation 0x783b8 -[CFPrefsSearchListSource alreadylocked_getDictionary:] 7 CoreFoundation 0x77dfc -[CFPrefsSearchListSource alreadylocked_copyValueForKey:] 8 CoreFoundation 0x77d30 -[CFPrefsSource copyValueForKey:] 9 CoreFoundation 0x77ce4 __76-[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:]_block_invoke 10 CoreFoundation 0x77690 __108-[_CFXPreferences(SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke 11 CoreFoundation 0x5cf24 normalizeQuintuplet 12 CoreFoundation 0x5cd60 -[_CFXPreferences withSearchListForIdentifier:container:cloudConfigurationURL:perform:] 13 CoreFoundation 0x5cc60 -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] 14 CoreFoundation 0x5c8bc _CFPreferencesCopyAppValueWithContainerAndConfiguration 15 Foundation 0xf0dcc -[NSUserDefaults(NSUserDefaults) objectForKey:] 16 OneSignalCore 0xc7c8 -[OneSignalUserDefaults keyExists:] + 61 (OneSignalUserDefaults.m:61) 17 OneSignalCore 0xcbd8 -[OneSignalUserDefaults getSavedDoubleForKey:defaultValue:] + 107 (OneSignalUserDefaults.m:107) 18 OneSignalFramework 0x8964 +[OneSignal shouldStartNewSession] + 350 (OneSignal.m:350) 19 OneSignalFramework 0xc968 +[OneSignalTracker applicationBecameActive] + 83 (OneSignalTracker.m:83) 20 OneSignalFramework 0xb894 -[OneSignalLifecycleObserver didBecomeActive] + 84 (OneSignalLifecycleObserver.m:84) ...... 55 UIKitCore 0x3ee674 -[UIApplication _run] 56 UIKitCore 0x14e88 UIApplicationMain 57 UnityFramework 0x399aef0 -[UnityFramework runUIApplicationMainWithArgc:argv:] + 96 (main.mm:96) 58 ClientsApp 0x412c main + 28 (main.mm:28)
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Apr ’25
How to Set Up Deferred Deep Linking
I have universal links configured for my iOS app which work as expected when the app is installed. When the app is not installed the universal link will go to the browser as expected. What I want to do is redirect to the app store, allow the user to install the app, then redirect them to the initial universal link. Redirecting them to the app store isn't the hard part I can achieve that from the webpage, however I don't know how to save a reference to that initial link to redirect them once they instal the app. What I want the flow to be for a user who doesn't have the app is: visit a universal link (example.com/UUID) redirect to the app store and install the app open the app and redirect to example.com/UUID I've seen some ways people are doing this with the clipboard but I don't love that solution, I also don't want to use a 3rd party service if I can avoid it - how are the 3rd party services making this happen?
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Apr ’25
Message Filter Extension Not Triggering on iPhone 12 Pro (iOS 16.7) but Works on iPhone 11 (iOS 16.6)
Hi Team, We’re encountering a device-specific issue with our SMS Message Filter extension. The extension works as expected on an iPhone 11 running iOS 16.6, but it does not trigger on an iPhone 12 Pro running iOS 16.7. Key Observations: The extension is implemented using ILMessageFilterExtension and calls messageFilterOffline(appGroupIdentifier:for:) from our shared library. The App Group is properly configured and accessible across the app and extension. The extension is enabled under Settings &gt; Messages &gt; Unknown &amp; Spam. There are no crashes or error logs reported on the affected device. The issue is consistently reproducible — it works on one device but not the other. We’re wondering if this could be a regression or a device-specific behavior change introduced in iOS 16.7. Has anyone encountered similar inconsistencies in Message Filter extensions across different iOS versions or device models? Any guidance or suggestions would be greatly appreciated. Thanks in advance!
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Apr ’25
Decode Base64 String in Objective c
I want decoded my base64 string and want to create image from it. NSData *data = [NSData dataWithBytes:bpData.rt_wav.data length:sizeof(bpData.rt_wav.data)]; NSMutableString *baseString = [data base64Encoding]; UIImage *image = [UIImage imageWithData:data];
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