Dive into the vast array of tools and services available to developers.

Posts under General subtopic

Post

Replies

Boosts

Views

Activity

How to install self signed certificate to iPhone simulator running iOS 18.5?
I am trying to communicate with the backend of my project. So I need to install the certificate into the simulator. I have the .pem file but when I drag-dropped it into the simulator, I got the error "Simulator device failed to complete the requested operation.". The simulator is an iPhone 16 Pro running iOS 18.5. Is there any way to install the cert to my simulator? PS: I can't use Apple Configurator or MDM because I am using the office's Mac. And I can't install anything there. So I can only do it manually.
3
0
373
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
6
1
408
1w
Problem getting Expectation objects (AI slop)
This is from an Xcode generated file. var values: [String] = [] let exp = Expectation() let c = pub.filter { $0 != nil }.map { $0! }.sink( The second line gives an error: "'Expectation' cannot be constructed because it has no accessible initializers". My best guess that Expectation objects come from some other Apple Swift Testing function, but I don't know where.
2
0
113
3w
How do I determine whether a framework contains bitcode?
Hi there I've recently had my upload rejected in Xcode Organizer as a result of one of the frameworks we use containing bitcode. Error: [ContentDelivery.Uploader.XXXXXXXXXX] Validation failed (409) Invalid Executable. The executable 'Sam.app/Frameworks/Foo.framework/Foo' contains bitcode. Is there an accurate way to determine whether an .xcframework contains bitcode ahead of time without using Xcode Organiser? My current methodology is below, please can I get some confirmation that this is accurate, or suggest a more efficient approach? I have concerns about my approach and whether it throws false positives for empty bitcode markers. 1. get original framework size 2. run xcrun bitcode_strip -r framework_path -o temp 3. get new framework size 4. if new size is smaller than original, then it contains bitcode Thanks for the help, Sam
1
0
1.1k
Feb ’25
Will Icon Composer support development of tvOS and visionOS icons?
In the beta of Icon Composer, I see macOS, iOS, and watchOS icons, but there is nothing about visionOS and tvOS. Those icons are particularly hard and it would be great if this app worked for developing icons for all Apple platforms. I tried asking this in a WWDC group lab, but they didn't get to it and suggested posting to the forum.
2
1
171
Oct ’25
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.
2
0
259
Oct ’25
Can't install iOS 26.0 beta through xcodes or xcodebuild
I need to automate updating to latest iOS betas as part of my ci script, but I can't get it to install iOS 26.0 beta for the life of me, using xcodes or xcodebuild. I can see the version listed using xcodes runtimes --include-betas, and I tried sudo xcodes runtimes install "iOS 26.0-beta1", but I would get the error Downloading Runtime iOS 26.0-beta1: 0% Error: ProcessExecutionError()\ I also tried xcodebuild -downloadPlatform iOS -buildVersion 23A5260l, where I found the specific build id on apples dev images website. But I would get the error iOS 23A5260l is not available for download. Specific version download failed, trying downloadPlatform ios latest... And similar error for trying xcodebuild -downloadPlatform iOS -buildVersion 26.0 or other version ids I found online. But this command would work for any other versions and betas listed on the website. I was able to install iOS 26.0 through xcodebuild -downloadPlatform iOS, which automatically installed it for me, but this is unideal for my situation, as I want to control which betas to install instead of just the latest one (like iOS 18.6 beta that just came out). Is anyone else also struggling with these errors? xcodes version 1.6.2 Xcode version 26.0 Beta (installed and selected through xcode)
4
1
288
Sep ’25
SF Symbols 7: Hundreds of SF Symbols missing 'Availability' info
In SF Symbols 7 (115), there are 458 symbols missing Availability info. I only discovered this after using one that didn’t appear in iOS 18 but does in iOS 26. Questions: Are there plans to add Availability info for all symbols? If the field is blank, is there a safe latest-OS version we can assume? I realize managing 7,000+ icons is tough, but missing info like this makes development frustrating. It doesn't help that there's no build warning when a named image isn't found, it just defaults to the text label. Screenshot Screenshot of SF Symbols 7 showing three symbols missing Availability info. The symbol ellipsis.circle.badge is selected and its properties pane also shows no Availability info.
2
0
186
Oct ’25
Public radar reports
Hello Apple community ! Not here to report an issue but I just wanted to make a suggestion ^^ I feel like a common frustration amongst developers is the lack of transparency over bugs filed on developer tools, SDKs, iOS versions, the whole Apple ecosystem really. This leads to the creation of parallel bug tracking tools (https://github.com/feedback-assistant/reports?tab=readme-ov-file / https://openradar.appspot.com/page/1) or filing of duplicates for reports that may already exist and are being worked on. I feel like this would save time for both external developers that encounter bugs & Apple engineers that have to look for possible duplicates to share a common public database of issues. Other companies have this kind of system in place (Google for example : https://issuetracker.google.com/) so why not Apple ? Thank you
0
1
144
May ’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
1
0
99
Aug ’25
Can't download 15.4 beta 1
Hi. I have three disk partitions on my MacBook Air M1. The one with Monterey, the one with Sonoma, and the one with Sequoia (15.3.1 in particular). When I try to download the 15.4 Beta from software update in settings, everything would go "fine" - the download process is being completed, the computer says it's going to restart in 60seconds, the countdown begins, etc. However, when restarting several times, I am being logged in once again into previous macOS (15.3.1) version, with a kernel panic report. I had the same panic on macOS 15.3 when attempting to download 15.4 Beta. I've upgraded my macOS to 15.3.1, as I thought I'd need the very last available version of regular macOS to participate in the newest beta. However, the panic occurs, pointing to some t8020dart.c file. I don't even theoretically know what is this and couldn't find any reference to that C file. Attaching a part of panic report: panic(cpu 3 caller 0x0): t8020dart 0xfffffdf02c980000 (dart-disp0): Can't ignore lock validation @t8020dart.c:535 Debugger message: panic Memory ID: 0xff OS release type: Not set yet OS version: Not set yet Kernel version: Darwin Kernel Version 24.4.0: Sat Feb 15 22:43:38 PST 2025; root:xnu-11417.100.533.501.4~3/RELEASE_ARM64_T8103 Fileset Kernelcache UUID: 232D67A6D42C66E14780A24B3C0AE05D Kernel UUID: F2602757-A486-30A9-8D8E-714224E5FE4A Boot session UUID: 575CD5EA-6898-47ED-9AEC-05E318135695 iBoot version: iBoot-11881.100.964.0.1 iBoot Stage 2 version: iBoot-11881.100.964.0.1 secure boot?: YES roots installed: 0 Paniclog version: 14 KernelCache slide: 0x00000000181d8000 KernelCache base: 0xfffffe001f1dc000 Kernel slide: 0x00000000181e0000 Kernel text base: 0xfffffe001f1e4000 Kernel text exec slide: 0x00000000198d0000 Kernel text exec base: 0xfffffe00208d4000 mach_absolute_time: 0x85b39c4 Epoch Time: sec usec Boot : 0x00000000 0x00000000 Sleep : 0x00000000 0x00000000 Wake : 0x00000000 0x00000000 Calendar: 0x00000000 0x00000000 Zone info: Zone map: 0xfffffe120c000000 - 0xfffffe380c000000 . VM : 0xfffffe120c000000 - 0xfffffe17d8000000 . RO : 0xfffffe17d8000000 - 0xfffffe1a72000000 . GEN0 : 0xfffffe1a72000000 - 0xfffffe203e000000 . GEN1 : 0xfffffe203e000000 - 0xfffffe260a000000 . GEN2 : 0xfffffe260a000000 - 0xfffffe2bd6000000 . GEN3 : 0xfffffe2bd6000000 - 0xfffffe31a2000000 . DATA : 0xfffffe31a2000000 - 0xfffffe380c000000 Metadata: 0xfffffe76ce010000 - 0xfffffe76d7810000 Bitmaps : 0xfffffe76d7810000 - 0xfffffe76d8d80000 Extra : 0 - 0 CORE 0 recently retired instr at 0xfffffe0020a9d2d0 CORE 1 recently retired instr at 0xfffffe0020a9d2d0 CORE 2 recently retired instr at 0xfffffe0020a9d2d0 CORE 3 recently retired instr at 0xfffffe0020a9b9ec CORE 4 recently retired instr at 0xfffffe0020a9d2d0 CORE 5 recently retired instr at 0xfffffe0020a9d2d0 CORE 6 recently retired instr at 0xfffffe0020a9d2d0 CORE 7 recently retired instr at 0xfffffe0020a9d2d0 TPIDRx_ELy = {1: 0xfffffe2040392fb0 0: 0x0000000000000003 0ro: 0x0000000000000000 } CORE 0 PVH locks held: None CORE 1 PVH locks held: None CORE 2 PVH locks held: None CORE 3 PVH locks held: None CORE 4 PVH locks held: None CORE 5 PVH locks held: None CORE 6 PVH locks held: None CORE 7 PVH locks held: None CORE 0: PC=0xfffffe002102157c, LR=0xfffffe0021021568, FP=0xfffffebf22637890 CORE 1: PC=0xfffffe00210207a4, LR=0xfffffe0020fe4eb0, FP=0xfffffebf2262b890 CORE 2: PC=0xfffffe002094c790, LR=0xfffffe002094c63c, FP=0xfffffebf22643890 CORE 3 is the one that panicked. Check the full backtrace for details. CORE 4: PC=0xfffffe00209708b4, LR=0xfffffe00209708b4, FP=0xfffffebf2213fed0 CORE 5: PC=0xfffffe00209708b4, LR=0xfffffe00209708b4, FP=0xfffffebf22163ed0 CORE 6: PC=0xfffffe00209708b4, LR=0xfffffe00209708b4, FP=0xfffffebf2216fed0 CORE 7: PC=0xfffffe00209708b4, LR=0xfffffe00209708b4, FP=0xfffffebf2211bed0 Compressor Info: 0% of compressed pages limit (OK) and 0% of segments limit (OK) with 0 swapfiles and OK swap space Panicked task 0xfffffe260c042b78: 0 pages, 268 threads: pid 0: kernel_task Panicked thread: 0xfffffe2040392fb0, backtrace: 0xfffffebf22666920, tid: 279 lr: 0xfffffe00209332bc fp: 0xfffffebf226669b0 lr: 0xfffffe0020a93cdc fp: 0xfffffebf22666a20 lr: 0xfffffe0020a91e94 fp: 0xfffffebf22666ae0 lr: 0xfffffe00208dbb94 fp: 0xfffffebf22666af0 lr: 0xfffffe0020932ba0 fp: 0xfffffebf22666ec0 lr: 0xfffffe0020932924 fp: 0xfffffe0031577e90 lr: 0xfffffe00211cb198 fp: 0xfffffe0031577eb0 lr: 0xfffffe002120aae4 fp: 0xfffffe0031577f80 lr: 0xfffffe00211f9104 fp: 0xfffffe0031577fe0 lr: 0xfffffe00208dc3fc fp: 0xfffffebf22666ee0 lr: 0xfffffe0020a82d74 fp: 0xfffffebf22666f30 lr: 0xfffffe00222f9964 fp: 0xfffffebf22667c00 lr: 0xfffffe002107c198 fp: 0xfffffebf22667c90 lr: 0xfffffe002107b79c fp: 0xfffffebf22667dc0 lr: 0xfffffe002107963c fp: 0xfffffebf22667e40 lr: 0xfffffe002107ffc8 fp: 0xfffffebf22667f20 lr: 0xfffffe00208e4f04 fp: 0x0000000000000000 Kernel Extensions in backtrace: com.apple.driver.AppleT8020DART(1.0)[6BE1928B-115D-345C-B457-FD1101FC7E1E]@0xfffffe00222f9120->0xfffffe002230139b dependency: com.apple.driver.AppleARMPlatform(1.0.2)[4EB15554-31E0-3057-9A85-EAA79C69E848]@0xfffffe0021369200->0xfffffe00213bf21f dependency: com.apple.driver.IODARTFamily(1)[8FC5A69F-6052-3F02-9EA3-78D080116812]@0xfffffe0022ec6750->0xfffffe0022eda9cf last started kext at 139867172: com.apple.plugin.IOgPTPPlugin 1340.12 (addr 0xfffffe001fba3f70, size 139368)
4
1
776
Feb ’25
Notarization stuck "In Progress" for 48+ hours - 6 submissions (Team ID: Y7T24GD249)
I'm experiencing a persistent issue where all my notarization submissions remain stuck in "In Progress" indefinitely. This is my first time notarizing an app. Environment: macOS 26.2 (Tahoe) Using xcrun notarytool submit Team ID: Y7T24GD249 App: Electron-based desktop application (~400MB) Stuck submissions (oldest to newest): 51412777-848c-4be1-a952-5ff32d6653f9 - Feb 4, 4:39 PM UTC (48+ hours) 9c4f94a1-d59a-4607-adf1-94c82fb4254b - Feb 4, 11:23 PM UTC 1c593512-ef55-4801-ba60-8b1bbc5a6f66 - Feb 4, 11:30 PM UTC de66e5cf-143c-40ec-ba62-2f07609044b4 - Feb 5, 1:39 PM UTC 964b2196-ad2e-4503-b15f-dc7f6a996ef0 - Feb 5, 2:25 PM UTC c8fdcccf-46cd-4609-bc33-faaa8fad696f - Feb 6, 5:11 PM UTC What I've tried: Verified Developer ID Application certificate is valid Checked code signatures with codesign -vvv --deep --strict Submitted both .zip and .dmg formats Checked Apple System Status (shows operational) notarytool log returns "Record not found" for all submissions Is there a known issue affecting first-time notarization, or could my account be flagged? Any help would be greatly appreciated.
4
0
74
9h
"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
2
0
246
Jul ’25