I'm trying to fade in the sound used in my alarm app but currently there's no way to achieve this since the alarm sound loops and if i add a fade-in at the beginning of my audio, every time the audio loops the fadein happens.

Could someone please explain how to use a custom sound when setting up an alarm using AlarmKit? It keeps playing a default sound. Also, I keep having an issue where the alarm sound plays but doesn’t show the alarm interface buttons unless the screen is locked.

Hi everyone, I’m currently developing a parental control app that uses the Screen Time API (FamilyControls, ManagedSettings, DeviceActivity). I have a question regarding the customization limits of the Shield UI in ManagedSettingsUI. From the documentation, I understand that we can customize the ShieldConfiguration (background color, blur style, icon, title, subtitle, button labels, etc.). However, I’d like to clarify a few points before finalizing the design: 1. Is it allowed (or technically possible) to display custom media content, such as videos, animations, or interactive elements, inside a custom Shield? 2. Are there limitations on the text length for the title and subtitle fields (e.g. maximum number of characters, multiline support, truncation behavior)? 3. Can the Shield be personalized per user (for example, showing a different title or color scheme based on user preferences or device state)? 4. Are there App Store Review restrictions or UI guidelines that define what a Shield should or should not contain (for instance, whether the Shield can resemble a mini-app experience)? I want to ensure that the implementation fully complies with Apple’s technical and design expectations before submission. Thanks in advance for any official clarification or best practices on how far we can go with Shield customization! Best regards, Ferdinand

[Question] Inconsistent Call Directory number matching across regions (Japan, Taiwan, U.S.) We’re developing a Call Directory extension and observed inconsistent number matching depending on carrier region and number format. Environment Device: iPhone (iOS 26.0) Call Directory Extension: Custom implementation Carrier A: Japan carrier SIM Carrier B: Taiwan carrier SIM Numbers added to Call Directory patterns: +81 120 580 2XXX +81 704 336 2XXX Observed Behavior (Japan Carrier SIM) Incoming call from +81 120 580 2XXX → Caller name not displayed (Call Directory match failed). Entering 0120 580 2XXX in the Phone app dialer → Name displayed correctly. Incoming call from +81 704 336 2XXX → Caller name displayed correctly. Entering 070 4336 2XXX in the Phone app dialer → Name displayed correctly. Observed Behavior (Taiwan Carrier SIM) Entering +81 120 580 2XXX in the dialer → Name not displayed until the call button is pressed. Entering +81 704 336 2XXX in the dialer → Name displayed immediately, before the call is placed. Steps to Reproduce For Japan carrier: Use a device running iOS 26 with a Japanese SIM card. Add the following numbers to the Call Directory extension: +81 120 580 2XXX and +81 704 336 2XXX Receive an incoming call from +81 120 580 2XXX → ❌ Caller name not displayed. Open the Phone app and enter 0120 580 2XXX → ✅ Caller name displayed. Receive an incoming call from +81 704 336 2XXX → ✅ Caller name displayed. Open the Phone app and enter 070 4336 2XXX → ✅ Caller name displayed. For Taiwan carrier: 7. Insert a Taiwan SIM card (keep the same Call Directory patterns). 8. Enter +81 120 580 2XXX → ❌ Name not shown until the call button is pressed. 9. Enter +81 704 336 2XXX → ✅ Name shown immediately. Expected Result For both numbers: Caller name from Call Directory should display consistently: a) On incoming calls. b) When entering the full number in the dialer (before pressing call). Behavior should be consistent across regions (Japan, Taiwan, United States). Actual Result Region / Carrier Number Pattern Incoming Call Dialer (Local Format) Japan +81 120 580 2XXX ❌ Not shown ✅ Shown (0120 580 2XXX) Japan +81 704 336 2XXX ✅ Shown ✅ Shown (070 4336 2XXX) Taiwan +81 120 580 2XXX N/A ❌ Not shown until call Taiwan +81 704 336 2XXX N/A ✅ Shown immediately Questions How should numbers be formatted or stored in the Call Directory patterns so that they match both incoming calls and dialer input consistently across regions? Are there region-specific number normalization rules (e.g., Japan’s 0-prefixed local dialing or Taiwan’s international format handling)? Is there an official guideline or recommendation for formatting phone numbers in Call Directory extensions (e.g., E.164 vs local format) to ensure consistent matching? Notes The inconsistent behavior appears to be related to how iOS normalizes numbers per carrier region and local dialing conventions. In Japan, incoming calls from mobile numbers starting with 070 match correctly, while 0120 (toll-free) fails unless entered in local format.

Steps To reproduce: Login to application and App has joined the PTC channel. Push the application to background and Lock the device. From the System UI press the talk button which will start transmit. Audio Session has been activated and Audio unit has been initialised properly. On terminator side no media is being played out. Issue observed consistently on specific models which has configured audio codec with Stereo type. More details are added : FB20281626

I’m seeing a strange behaviour when sending mail from my app with MFMailComposeViewController. If the attachment is larger than about 3 MB, the message is created but then remains stuck in Outbox on my iPad running iPadOS 26.0.1. If I open the stuck draft in Outbox and tap Send immediately, the message is sent successfully. If I wait for a while before resending, the attachment shrinks to a few hundred bytes and the resend goes out without the file (I think the truncation is related to the MIME type, because it is not happening always). This happens only on the iPad: iPhone 16 on iOS 26.0.1 – message sends normally iPhone XR on iOS 18.7.1 – message sends normally iPad on iPadOS 26.0.1 – message remains stuck in Outbox with attachments over ~3 MB Mail settings: default iCloud account (also tried explicit setPreferredSendingEmailAddress("…@icloud.com")), Low Power Mode and Low Data Mode are off. Has anyone else encountered this behavior on iPadOS 26, or found a reliable workaround? Here’s the minimal repro I’m using: import UIKit import MessageUI class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. } override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) let mailComposer = MFMailComposeViewController() mailComposer.setSubject("test") mailComposer.setMessageBody("test", isHTML: false) let repeatedString = String(repeating: "aaaaa aaaaa\n", count: 300000) let data = repeatedString.data(using: .utf8)! mailComposer.addAttachmentData( data, mimeType: "application/octet-stream", fileName: "text.txt" ) self.present(mailComposer, animated: true) } }

When I run this in a playground: var meDate = Calendar.current.date(from: DateComponents(year: 2024, hour: 7, weekday: 3, weekdayOrdinal: 2))! print(meDate) I see: 2024-01-09 15:00:00 +0000 This seems correct to me. jan 9th is the second Tuesday in 2024 I'm in the pacific TZ, 07:00 PDT matches 15:00GMT But then I do this: meDate = Calendar.current.date(bySetting: .weekday, value: 4, of: meDate)! print(meDate) and I see: 2024-01-10 08:00:00 +0000 I would have expected my hour value (7PST/15GMT) to have been preserved. Is there a way I can update weekday, but not lose my hour?

I am wanting to not only surface my content in the system-level Spotlight search results but also to utilize the same index for my in-app search screen. The very few examples or tutorials I could find all craft a CSSearchQuery string using just the "title" attribute. I can't figure out where to look to understand how to search across other attributes. My most pressing need is to be able to perform a CSSearchQuery looking for a search term in the .htmlContentData attribute. If I search for this term in the system search field it returns results, so I know it's being indexed. However when I use a search query (in my app) like htmlContentData == "someSearchTerm" I get zero results. This frustration has led to some more general questions like: How do you know what attribute names are available to use in the search query? Is it just a string literal that's exactly the same as the CSSearchableItemAttributeSet property in Swift? e.g. property .htmlContentData is referred to as "htmlContentData" in the query string? Also, is there any way to just search across all attributes with CSSearchQuery? Obviously using the system Spotlight search (from Home Screen) you don't have to specify if you're searching the title or htmlContentData, it just finds it in either. Yet for CSSearchQuery I have to know up-front which fields I want to look in?

Hi, We are working to integrate the Live Caller ID Lookup feature into our app. After submitting the request form via the link: https://developer.apple.com/contact/request/live-caller-id-lookup/, we received this reply from Apple: Apple’s OHTTP relay has been configured to talk to your OHTTP gateway. Now Live Caller ID Lookup should work for your application extension when distributed through App Store. However, before officially releasing our app on the App Store, we’d like to make sure the Live Caller ID Lookup feature is working as expected. To test this, we uploaded the app to TestFlight, and it successfully passed App Review. However, the test failed — we observed that the system tries to fetch the config from http://www.example.com/config instead of our actual configuration URL. Questions: Is this expected behavior when using TestFlight? Does the Live Caller ID Lookup feature only become active after full public release on the App Store? Is there any recommended way to test this feature before public release? Thank you!

I have prepared a NSSpellServer spelling and grammar checker for Slovenian proofing in macOS. My proofing service gets used when I explicitly set keyboard spelling language to "Slovenian (Besana)" (my proofing service). However, no matter how I set the Check Grammar With Spelling option or Check Grammar checkbox in the TextEdit.app or Mail.app, my proofing service does not get any request for grammar checking. I am supporting checkString call for Unified checking and checkingTypes never contains NSTextCheckingTypeGrammar flag. When using legacy API before Unified checking support, the checkGrammarInString is never called either. If I do the grammar regardless the checkingTypes parameter, the app shows grammar mistakes correctly. But that is bad UX. Need to follow user demand for with grammar or without grammar. I don't know what am I doing wrong? On my home iMac v11 it actually works. No idea what I did there to make it work. Just worked. On my working Mac Mini v13 it won't check grammar. On another MacBook Pro v15, it won't check grammar either. Apps do check spelling with my proofing service. But not grammar. Same apps do grammar checking with stock AppleSpelling.service just fine. I have checked my Info.plist, using Hardened Runtime, have empty Entitlements, to no avail. Was there some new grammar API introduced after macOS v11 Big Sur, I should implement? Is there some specific Entitlement, signature, notarization I should perform to get going? Some documentation I am missing?

I would like the function in the calendar app to be able to assign a status to the set appointment, such as unconfirmed or pending.

I've been trying to add a CoreSpotlight indexer to my macOS application. The new template for the indexer uses the new appex CSImportExtension style importer. I've been following this -> https://developer.apple.com/documentation/corespotlight/csimportextension I changed the CSSupportedContentTypes in the Info.plist file to the correct file type uti. I added a dummy value into the attributes (see code below) - just setting contentDescription to 'noodle' (easy to search for) class ImportExtension: CSImportExtension {   override func update(_ attributes: CSSearchableItemAttributeSet, forFileAt: URL) throws {     // Add a dummy value, and see whether spotlight finds it     attributes.contentDescription = "noodle" } } I have a number of files on disk that match the uti (and can be found when I search by the file name) Yet, when I build and run my app, the a spotlight search for 'noodle' finds no results. Can anyone give me any advice? I cannot find any indication that the ImportExtension is called (although when I put a log message at the start of the update() call there's no message in the console which seems to suggest it's not being called). Is there any way of debugging this? Cheers and thanks -- Darren.

I investigated what network interface names are assigned to carrier networks on a dual SIM iPhone by examining the output of getifaddrs(). (An part of the program used for this is provided below.) ////////////// struct ifaddrs *interfaces = NULL; struct ifaddrs *an_interface = NULL; if (0 == getifaddrs(&interfaces)) { an_interface = interfaces; while (an_interface != NULL) { if( an_interface->ifa_addr->sa_family == AF_INET) { NSString* name = [NSString stringWithUTF8String:an_interface->ifa_name]; NSLog(@"Interface name is: %@", name); } an_interface = an_interface->ifa_next; } } freeifaddrs(interfaces); In this investigation, it appeared that the interface name for the sXGP SIM selected under "iPhone > Settings > Cellular > Cellular Data" was always "pdp_ip0". (A screenshot of "Cellular Data" is provided below. this is sample of sXGP selected )" [QUESTION] Is the SIM selected in Settings of iPhone always assigned to "pdp_ip0"? [BACKGROUND] I am developing a VoIP application and opening sockets by specifying IP addresses for communication. On a dual SIM iPhone, multiple networks (IP addresses) are visible. Therefore, I need to determine which network to use. My question is whether I can reliably make this decision based on the network interface name. If the SIM selected in Settings is always assigned to "pdp_ip0", I intend to open the socket using the IP address of "pdp_ip0". Alternatively, should I use a different method to select the appropriate network interface?

We appreciate your suggestion to use the Apple Developer Forums. However, we must respectfully request further escalation of this issue beyond the forums for several critical reasons: Severity and Scope: This is not a general development discussion topic. We are facing a massive, reproducible performance issue on iOS 16 that renders devices unresponsive, requiring factory resets or DFU restores. This goes far beyond typical app bugs and points to a potential systemic issue in the OS's image handling. Insufficiency of Forum Support: While the forums are a valuable resource for community advice, they cannot provide the official, in-depth technical diagnosis from Apple engineers that this situation demands. Our users' devices are being bricked by an app update that passed App Review, and we require clarity on the root cause to prevent further damage and restore user trust. Code-Level Support Eligibility: As members of the Apple Developer Program, we believe our issue falls under the purview of Code-Level Support, as described on the Apple Developer website 9. Our problem involves "building or running software" and requires expertise in Apple's frameworks and hardware-level image rendering APIs. We request that our case be forwarded to that specialized team. To reiterate the core problem: Our update introduced 1024x1026 JPEG assets into the Asset Catalog. On iOS 16, this causes severe overheating, freezing, and device unresponsiveness. Replacing them with PNGs completely resolves the issue. This suggests a potentially serious regression in iOS 16's JPEG decoding or memory management pipeline. We prepared to provide a sample project that demonstrates the issue if required. Our case number is 102678393572. We urgently need to understand why this happens at the OS level to ensure our app is safe and to contribute to the stability of the iOS platform. Please escalate this case to the appropriate technical team for a detailed investigation. Sincerely,

Since legacyScreenSaver is still the thing running screensavers we make, and it's still buggy, why won't they give us a new template for building screensavers that run in the new engine? And hopefully they don't require them to blend in with the desktop, because most of us don't want that. A wallpaper is a wallpaper, and a screensaver is a screensaver.

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString timeIntervalSinceReferenceDate]: unrecognized selector sent to instance 0x115fadbc0' *** First throw call stack: (0x1940bd8c8 0x1910097c4 0x194159838 0x19403a4f8 0x1940423a0 0x1e42cb9a8 0x1e42ce220 0x106f02c08 0x1080a461c 0x1080be2b0 0x1080acb2c 0x1080ad7b4 0x1080b9b00 0x1080b91a4 0x1eecdb3b8 0x1eecda8c0) libc++abi: terminating due to uncaught exception of type NSException InputAnalytics called timeIntervalSinceReferenceDate in dispatch_sync.The display issue of the call stack occurs in two stages: keyboard input analysis and folding the keyboard.After adding protection to NSString, it can function normally, but I want to know the reason. #import "NSString+Safe.h" @implementation NSString (Safe) - (NSTimeInterval)timeIntervalSinceReferenceDate { return 0; } - (NSTimeInterval)timeIntervalSinceDate:(NSDate *)date { return 0; } @end

When the UITextField is touched, it crashes on "[UITextField becomeFirstResponder]" iOS 15.3.1 keyboard: Chinese keyboard of system

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString timeIntervalSinceReferenceDate]: unrecognized selector sent to instance 0x115fadbc0' *** First throw call stack: (0x1940bd8c8 0x1910097c4 0x194159838 0x19403a4f8 0x1940423a0 0x1e42cb9a8 0x1e42ce220 0x106f02c08 0x1080a461c 0x1080be2b0 0x1080acb2c 0x1080ad7b4 0x1080b9b00 0x1080b91a4 0x1eecdb3b8 0x1eecda8c0) libc++abi: terminating due to uncaught exception of type NSException InputAnalytics called timeIntervalSinceReferenceDate in dispatch_sync.The display issue of the call stack occurs in two stages: keyboard input analysis and folding the keyboard. After adding protection to NSString, it can function normally, but I want to know the reason #import "NSString+Safe.h" @implementation NSString (Safe) - (NSTimeInterval)timeIntervalSinceReferenceDate { return 0; } - (NSTimeInterval)timeIntervalSinceDate:(NSDate *)date { return 0; } @end

Hi, Since I updated my phone to 23A341, my Call filtering app is not blocking calls anymore. Same release checked on iOS 18 phone, it is working. I still see the callkit logs into the Console showing that numbers are loaded into the iOS-managed SQlite DB but the calls are not blocked nor identified. Anyone with the same issue? BR

iOS Message Filter Extension - deferQueryRequestToNetwork(completion:) error I made a test app using the iOS App template and added a target using the Message Filter Extension template which invokes deferQueryRequestToNetwork(completion:) when receiving an SMS. The app and the extension have same "Associated Domains Capabilities" with "messagefilter" pointing to a server which receives query requests and returns proper responses. The extension has the "ILMessageFilterExtensionNetworkURL" key in Info.plist file which specifies the server URL. deferQueryRequestToNetwork(completion:) throws a com.apple.calls.messagefilter error which reads "Extension's containing app (appID ) unauthorized to defer requests to host "