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Background Assets Directory Collision
Hello, I'm trying to use multiple Background Assets Packs to host map tiles. This is problematic for a few reasons. MKTileOverlay requires a method that returns a URL. AssetPackManager.shared.url() throws, but it's unrelated to the url. It will return a URL even if it points to nothing. There's no name-spacing. Everything appears to be flattened. (See Error below) Simultaneously, this also is not the case as the documentation states: if there’s a path collision across multiple asset packs, then it’s undefined from which asset pack an individual file will be resolved. AssetPackManager.shared.url() doesn't have an optional parameter to explicitly declare the asset pack you want to access, like AssetPackManager.shared.contents(at: FilePath) does For example, I have multiple different tiles I'm trying to overlay for z: 10, x: 239, and y: 414. Foo/10/239/414.png Bar/10/239/414.png And even when explicitly stating the fold directory, it appears that the assets are flattened down. As I'm receiving this error. The URL for “Foo/10/239/414.png” couldn’t be retrieved: “414.png” couldn’t be copied to “239” because an item with the same name already exists.
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Oct ’25
iOS 26 Download Link is Broken
I'm trying to download the iOS 26 restore image for my iPhone 14 Pro Max, which is my test device. However, when I attempted to install it directly via the over-the-air (OTA) update, the iPhone rebooted to the iOS 26 "Welcome" screen, but with no touch functionality—the screen was completely unresponsive. I restored the device back to iOS 18.5 and tried the OTA update again, but once more, the touch screen stopped working upon completion. Now, I am trying to download the iOS 26 restore image from the official developer page (https://developer.apple.com/download/#ios-restore-images-ipad-new) to install it manually using my Mac. However, I've run into a problem with the download links: The link for the iPhone 14 Pro Max (iOS 26) restore image actually downloads the iPhone 14 Pro (iOS 18.5) image. Conversely, the link for the iPhone 14 Pro seems to provide the correct iPhone 14 Pro Max (iOS 26) image. The issue is that when I try to restore my iPhone using this seemingly correct file, I receive an error that the firmware file is not valid or compatible. I suspect it's not being properly signed by Apple for my device during the restore process. Does anyone have the correct, official download link for the iOS 26 restore image for the iPhone 14 Pro Max? How can I fix these errors?
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295
Jun ’25
Developer Disk Image could not be mounted on this device
I have been working on a M1 Mac mini, using my iPad Air M2 running 26.3 iPadOS. Switched to a new M4 Mac mini, went to connect my iPad to run from Xcode and was presented this "The developer disk image could not be mounted on this device." So how can a get an updated DDI? I appreciate any ideas. /Users/robertlawson/Desktop/Screenshot 2026-02-15 at 8.21.50 PM.png
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2w
"Application has not loaded accessibility" timeout followed by silent auto-recovery corrupts framework state on iOS 18
On iOS 18, when XCUITest encounters an "Application has not loaded accessibility" error after the 60 second timeout, it performs an undocumented auto-recovery ("Setting up automation session") instead of halting the test as documented. This leaves the XCUITest framework in a corrupted state, causing subsequent tests in the same session to fail with unexpected behavior. Expected Behavior (per Apple documentation): Any failure in the launch sequence will be reported as a test failure and the test will be halted at that point. Actual Behavior: XCUITest waits 60 seconds for accessibility to load Logs "Application has not loaded accessibility" error Instead of halting, performs "Setting up automation session" (auto-recovery) Test continues with corrupted framework state Subsequent tests in the same session fail with phantom element queries Steps Run XCUITest suite on a real iOS 18 device Have an app with moderately heavy initialization (e.g., synchronous network operations during bootstrap) Observe intermittent "accessibility not loaded" errors When error occurs, subsequent tests fail with unexpected behavior Test Logs Evidence First test (accessibility failure + recovery): t = 11.11s Wait for accessibility to load t = 71.14s Capturing diagnostic spindump t = 76.24s Assertion Failure: Application 'com.example.app' has not loaded accessibility t = 76.26s Setting up automation session ← Undocumented recovery t = 77.29s Tear Down Second test (corrupted state): t = 35.01s Tap "signin-button" t = 35.55s Waiting for "bannerButtonStackFirstItem" ← Query NOT in test code! t = 40.58s Assertion Failure: Failed to find element The second test executes element queries that do not exist in its source code, indicating leaked/corrupted state from the previous test's failed recovery. Note: The tearDown() method terminates the app but cannot reset the internal state of the XCUITest framework itself, so corruption persists across tests. We are observing this behavior consistently on iOS 18 real devices. We would like to know: Is this a known issue with XCUITest on iOS 18? Is anyone experiencing similar "accessibility not loaded" failures followed by auto-recovery? Is the "Setting up automation session" recovery behavior intentional or a bug? Is there a recommended workaround to prevent framework state corruption between tests?
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181
Jan ’26
crash while exectuing __llvm_profile_write_file() in Xcode26.0
I am developing an iOS in-app SDK for collecting code coverage data. The SDK writes coverage data to a specified file by calling __llvm_profile_set_filename and __llvm_profile_write_file. This implementation worked correctly until I switched to Xcode 26.0 to build my project. Now, when __llvm_profile_write_file() is executed, it crashes with the following error stack. Can anyone provide any assistance? Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000001 Exception Codes: 0x0000000000000001, 0x0000000000000001 Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11 Terminating Process: exc handler [454] Thread 96 name: Dispatch queue: com.test-coverage.processing Thread 96: Crashed: 0 Demo 0x122602ea8 initializeValueProfRuntimeRecord (in Demo) (InstrProfilingValue.c:351) 1 Demo 0x00000001226064c0 writeOneValueProfData (in Demo) (InstrProfilingWriter.c:153) 2 Demo 0x0000000122606308 writeValueProfData (in Demo) (InstrProfilingWriter.c:234) 3 Demo 0x00000001226060d0 lprofWriteDataImpl (in Demo) (InstrProfilingWriter.c:401) 4 Demo 0x0000000122605d98 lprofWriteData (in Demo) (InstrProfilingWriter.c:261) 5 Demo 0x0000000122604804 writeFile (in Demo) (InstrProfilingFile.c:536) 6 Demo 0x122604664 __llvm_profile_write_file_alias + 228 7 Demo 0x000000011c6dd108 -[BDTestCoverage p_dumpMainCoverageInfoWithCustomKey:] (in Demo) (TestCoverage.m:995) 8 Demo 0x000000011c6dcef8 -[BDTestCoverage p_dumpAllCoverageProfileWithCustomKey:] (in Demo) (TestCoverage.m:970)
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Nov ’25
Is this normal while developing an app on the watch?
I used to develop iPhone apps about a decade ago and am now back at it with an iPhone and companion Apple Watch app. Why does it suck so bad? I a must be doing something wrong, but what I am doing is out of the box. The majority of the time when I go to build on the watch I get: Previous preparation error: A connection to this device could not be established.; Timed out while attempting to establish tunnel using negotiated network parameters. Which I then first try to force quit the app on the watch and if that does not work, reboot the watch (which is pretty ridiculous). I tried Gemini and it gave me the following explanation: This is arguably the single most frustrating error in the entire watchOS development ecosystem. As an expert, I can tell you that you are not doing anything wrong; you are fighting a fragile architecture. Here is the technical breakdown of why this happens and a workflow to mitigate it without constant reboots. The Technical "Why" This error message reveals that the issue lies in the CoreDevice (and formerly usbmuxd) infrastructure, specifically in the secure transport layer. The "Tunnel" Failure: Xcode attempts to establish a secure, encrypted tunnel (DTXConnection) to the Apple Watch to push the debugger and the app binary. Unlike the iPhone, which can sustain a high-bandwidth connection easily, the Watch aggressively manages its radios (Bluetooth vs. WiFi vs. AWDL) to save battery. The "Handshake" Timeout: If the Watch is on Bluetooth (Low Energy) when Xcode initiates the tunnel, the bandwidth is insufficient. The system tries to escalate the connection to WiFi (or Apple Wireless Direct Link). If this negotiation takes even a few milliseconds too long—due to 2.4GHz interference, router mDNS configuration, or the Watch CPU being throttled—the handshake times out. The "Previous Preparation Error": This is the insidious part. Once the handshake fails once, Xcode’s device service caches that failure state for the device UUID. It marks the device as "unreachable" to prevent the IDE from hanging indefinitely on subsequent tries. Why you see it constantly: You aren't actually triggering a new connection attempt; you are hitting the cached "failed" state immediately. Unfortunately, the solutions it gives me are: The "Wired Proxy" Method (Most Reliable) This is the gold standard for watchOS debugging. Do not rely on "Connect via Network" for the Watch directly if you can avoid it. Disable WiFi on your Mac (temporarily) or ensure the Mac and iPhone are on the exact same SSID. Plug your iPhone into the Mac via USB. Ensure the Watch is paired to that iPhone. Result: Xcode will tunnel the instructions through the USB connection to the Phone, and the Phone acts as a high-bandwidth proxy to the Watch. This eliminates the "Mac-to-Watch" WiFi negotiation failure point. Do you hit this regularly? What do you do to make for a smooth development and deployment process? Or is it really this fragile? Thanks for any help! Bryan
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Feb ’26
Installer packages are failing to install on macOS26.1
Hi, We use Flat package installers (.pkg based installers) to install our applications on macOS. In macOS 26.1, installation is failing with the error Unable to use PK session due to incompatible packages. Terminating. 2025-11-03 14:22:36+05:30 Admin-3 installer[1160]: Install failed: The Installer could not install the software because there was no software found to install. Same installer package is working on macOS 26. Any help is greatly appreciated.
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Dec ’25
Testing Family Controls & Multicast Networking APIs - Educational Use Without Paid Developer Account?
Hi Apple Engineers and fellow developers, I'm a student developer working on an educational focus management app that helps users hide distracting apps during study sessions. The app consists of: macOS app: Simple "Hide apps" button that triggers app hidding sessions iOS app: Uses Screen Time API to temporarily hide selected apps from home screen Communication: Bonjour networking between Mac and iPhone for session coordination The Challenge My app requires two entitlements that aren't available with Personal Developer Teams: com.apple.developer.family-controls (for Screen Time API) com.apple.developer.networking.multicast (for Bonjour device discovery) Current Error Messages text Cannot create a iOS App Development provisioning profile for "focuser.focuser-app". Personal development teams, including "My Name", do not support the Family Controls (Development) capability. Provisioning profile doesn't include the com.apple.developer.family-controls and com.apple.developer.networking.multicast entitlements. My Question for Apple Engineers Is there any legitimate way to test these privacy-sensitive APIs on my own devices for educational/learning purposes without purchasing the $99/year Apple Developer Program membership? I understand the security reasons behind these restrictions, but as a student just learning iOS development, it creates a significant barrier to experimenting with these technologies.
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Oct ’25
RECOLLECTING CODE FROM UPLOAD????
Hello All, I used to own an app named LOLIIPOP, and am in the process of transferring it to my new apple account. I am having two problems.... How do I transfer the source code and binary to my new apple account? My developers have an old code, so I need to send them the LAST code they uploaded to the App Store. How do I do that as well??? Please any help!!! Thanks, Mr. LM
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Aug ’25
"Show API Changes" no longer available on Apple Developer Documentation website?
There was a time that Apple Developer Documentation provides a filter to show the changes across versions, at https://developer.apple.com/documentation/technologies , with purple (modified), green (added), and red (deprecated) annotations. I wonder if this feature is completely removed, or is it still hiding somewhere? It is helpful to diff the API changes among versions. Thanks. edit: as pointed out by Rick, here is an archive link to what it used to look like
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Jul ’25
Issue with Latest Commands Lines Tools 16.3 Update
After the Update of Latest Command Line Tools 16.3 I am facing issue to compile C++ programs. Like it is giving some kind of library error in the MACOSX15.sdk file and this is the error. In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/machine/_structs.h:35, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/arm/_mcontext.h:36, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/machine/_mcontext.h:34, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/sys/signal.h:146, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/sys/wait.h:109, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/_stdlib.h:70, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/stdlib.h:58, from /opt/homebrew/Cellar/gcc/14.2.0_1/include/c++/14/cstdlib:79, from /opt/homebrew/Cellar/gcc/14.2.0_1/include/c++/14/stdlib.h:36, from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/assert.h:44, from /opt/homebrew/Cellar/gcc/14.2.0_1/include/c++/14/cassert:44, from /opt/homebrew/Cellar/gcc/14.2.0_1/include/c++/14/aarch64-apple-darwin24/bits/stdc++.h:33, from 1.cpp:1: /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:627:35: error: expected primary-expression before 'unsigned' 627 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:627:26: error: '_Alignof' was not declared in this scope 627 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:633:35: error: expected primary-expression before 'unsigned' 633 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:633:26: error: '_Alignof' was not declared in this scope 633 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:639:35: error: expected primary-expression before 'unsigned' 639 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:639:26: error: '_Alignof' was not declared in this scope 639 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:645:35: error: expected primary-expression before 'unsigned' 645 | } __attribute__((aligned(_Alignof(unsigned int)))); | ^~~~~~~~ /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/mach/arm/_structs.h:645:26: error: '_Alignof' was not declared in this scope 645 | } __attribute__((aligned(_Alignof(unsigned int)))); But after downgrading the version to 16.2 it works fine. I can't understand that it's their any issue with Command Line Tools 16.3??
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Apr ’25
Missing Content from my app
Hi there! I am not a coder, but I built an app in ADALO just for in-house use in my company, PetroImaging. The app looked the way I wanted it to in the preview mode in ADALO, but when my app was approved and ready for download in the app store, a lot of content was missing. Many buttons that linked to screens were just gone - even though they were there in the preview and the buttons are formatted correctly in adalo. How can I get my content that I need back on my app so the employees can being using it?
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129
Jan ’26
Developer Mode without PC
My phone's charging port is fried. It only charges wirelessly. Fixing it costs the same as the phone. I currently am having a lot of issues enrolling for apple developer program as well, so I can't use test flight right now. I want to enable developer mode on my phone, but it's never been connected to xcode before, so the option is not available. How do I enable developer mode without being able to connect it to a pc? I have a mac, and both my mac and iphone are on the same apple id. thank you
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1w
Is Apple reading reports in the new Feedback Assistant?
Dear Apple,I'm an iOS developer and provided feedback in the good old online bug tracker for many years.Decent conversations with Apple egnineers often resulted in bug fixes or updated documentation.The fact that my contributions helped to improve the products was rewarding.So I kept adding reports in the new Feedback Assistant app in macOS Catalina.But ever since (September 2019) I never ever got any response on any ticket.1 month ago I even added a report if Apple even read my reports. Again, no response ever since.So my question on this forum: Is Apple actually reading reports in the new Feedback Assistant?This can either be answered by Apple, or by other Developers that hopefully did response feedback from Apple. Or did not.Best regards,Martijn
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3.8k
May ’25
Assertion failed: (reconstituted == accumulator), function setFixup64, file OutputFile.cpp, line 2975
Xcode 16.2 Flutter version 3.27.1 0 0x1008abee4 __assert_rtn + 160 1 0x1008add9c ld::tool::OutputFile::setFixup64(unsigned char*, unsigned long long, ld::Atom const*) (.cold.3) + 0 2 0x100789640 ld::tool::OutputFile::setFixup64(unsigned char*, unsigned long long, ld::Atom const*) + 656 3 0x100785b78 ld::tool::OutputFile::applyFixUps(ld::Internal&, unsigned long long, ld::Atom const*, unsigned char*) + 4388 4 0x10078be18 ___ZN2ld4tool10OutputFile10writeAtomsERNS_8InternalEPh_block_invoke + 488 5 0x19bc19428 _dispatch_client_callout2 + 20 6 0x19bc2d850 _dispatch_apply_invoke3 + 336 7 0x19bc193e8 _dispatch_client_callout + 20 8 0x19bc1ac68 _dispatch_once_callout + 32 9 0x19bc2c8a4 _dispatch_apply_invoke + 252 10 0x19bc193e8 _dispatch_client_callout + 20 11 0x19bc2b080 _dispatch_root_queue_drain + 864 12 0x19bc2b6b8 _dispatch_worker_thread2 + 156 13 0x19bdc5fd0 _pthread_wqthread + 228 A linker snapshot was created at: /tmp/Test Kopi Kenangan.debug.dylib-2025-02-27-100512.ld-snapshot ld: Assertion failed: (reconstituted == accumulator), function setFixup64, file OutputFile.cpp, line 2975. clang: error: linker command failed with exit code 1 (use -v to see invocation)
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Sep ’25
Controlling UIDesignRequiresCompatibility via Remote Config
Hello, I am currently in the process of gradually adding support for LiquidGlass to my app. The transition is taking place incrementally, i.e., new screens and minor features are gradually being adapted to the new design and already deployed. Currently, the old design is still active via the feature flag UIDesignRequiresCompatibility, as the existing UI should remain locked for the public app store version until the transition is complete. My challenge is as follows: I would like to work with the new LiquidGlass design during development without having to manually change the UIDesignRequiresCompatibility flag with each deployment. Ideally, I am looking for a solution where: • the new design is only activated for me (e.g., specific account or specific devices) • the old design remains active for all other users • the App Store version can be delivered unchanged So my question is: Is it possible to control UIDesignRequiresCompatibility via remote config or server-side logic in order to activate the new design specifically for certain users or devices? I have observed similar behavior on WhatsApp—two devices with the same app version, but only one shows the new design. This suggests server-side or remote config-based control. Do you have any experience or recommendations on how to implement something like this cleanly? Kind regards Heinz
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331
Dec ’25
Could you please add a feedback/question feature for the Apple Developer Documentation?
Routinely I'll have additional questions when browsing the Apple Developer Documentation. Would be really convenient if we could just submit that feedback from the documentation webpage itself, Apple could have the data, and potentially down the line address it; but at least you'd have the data. For example, I'm looking at the documentation for AttributedString: https://developer.apple.com/documentation/foundation/attributedstringprotocol/index(_:offsetbycharacters:) Now, I would like to know what would happen if the distance brought the position past the end, what would be returned. Because it's non-optional which I imagine would imply nil would be returned if the parameters were invalid. But it doesn't say. I run into these small missing behavioral details with some regularity and imagine others do as well. It would be really great if we could just submit that discrepancy and perhaps see some numbers on the page of the total number of discrepancies submitted or something so we can see that it's not just us and have some peace of mind that based on the amount of feedback submitted there's a higher chance that this discrepancy will be addressed in the future.
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107
Apr ’25
Speech Recognition Entitlement Not Appearing in App ID Capabilities
Hello, I recently enrolled in the Apple Developer Program and created an App ID with the bundle ID com.echo.eyes.voice. I am trying to enable Speech Recognition in the App ID capabilities list, but the option does not appear — even after waiting over a week since my membership was activated. I’ve already: Confirmed my Apple Developer account is active Checked the Identifiers section in the Developer portal Tried editing the App ID, but Speech Recognition is not listed Contacted both Developer Support and Developer Technical Support (Case #102594089120), but was told to post here for help My app uses Capacitor + the @capacitor-community/speech-recognition plugin. I need the com.apple.developer.speech-recognition entitlement to appear so I can use native voice input in iOS. I would really appreciate help from an Apple engineer or anyone who has faced this issue. Thank you, — Daniel Colyer
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174
Jun ’25