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5 Transaction ID's
When a user subscribes I create a document in Firestore to track that subscription using my back end. In sandbox it works perfect, one document made for each purchase. When a real user subscribes I get 5 slightly different transaction ID’s (last 4 digits change). Is this just an Apple thing and I should keep all 5? I need them for webhooks to track
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252
Oct ’24
Developer Account Renewal Country Payment Change
Hi, Help!! So I was in Thailand for a number of years and developed an app over there and signed up as a developer over there. But now I'm in the USA indefinitely and I'm unable to change my payment method. How can I change it? I called the USA support line twice and no one was able to help me. I tried the Thailand phone number and I'm unable to call from the USA. Any suggestions? Thanks!!
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329
Dec ’24
Device token for DeviceCheck API
Hi all, I'm trying to integrate Apple’s DeviceCheck API into my Flutter iOS app. I already have everything set up on the backend — the Apple private key, key ID, team ID, and DeviceCheck capability. The backend is generating and signing the JWT correctly and making requests to Apple. However, I’m currently stuck on the frontend (Flutter): 👉 How can I generate the device_token required by the DeviceCheck API (via DCDevice.generateToken) in a Flutter iOS app? I understand that DCDevice.generateToken() must be called from native Swift code. I previously attempted to use a MethodChannel to bridge this in Swift, but would prefer not to write or maintain native Swift code if possible. I've looked for a prebuilt Flutter package to handle this, but nothing exists or is up-to-date on pub.dev. Main Question: Is there any Apple-supported way to generate the device_token for DeviceCheck from a Flutter app without writing Swift code manually? If not, is DCDevice.generateToken() the only possible approach, and must I implement this via Swift and Flutter platform channels? Thanks!
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102
Apr ’25
PyCharm venv is corrupted, again
I am a new user of PyCharm, but have years of experience with MacOS, python and similar. My set up is MacBook Pro M1, 32GB ram, MacOS Sequoia 15.2, and PyCharm Pro latest. Path to projects leads to an external SSD via usb-c. I have set up some projects, each using python 3.12 in a venv. The projects work for a while then “lose” a module (module not found). I have gone through every troubleshooting method the built-in AI and web search have come up with. The first module to disappear is docx2txt. I created a new project and it worked, for a couple of days then the error returned. The docx2txt module could not be found working within or outside of PyCharm. In site-packages there is no “docx2txt” folder, only an “info” folder containing WHEEL and its companions. For the most recent disappearance, I noticed the package used distutils. I cloned the docx2txt project from GitHub and updated setup.py to use setup tools instead of distutils, and installed it. Python invoked from the command line can import it, but not from PyCharm. When I run the project from PyCharm, the interpreter cannot find dotenv. I have lost days of work time at this point so I am a bit worried. Advice on what to look at and for would be great.
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301
Dec ’24
NSItemProvider make .jpg image to .jpeg
Hi, I'm not sure why but when my fileURL is .jpg file and I drop the file from my app to Finder folders it make the dropped file as .jpeg Is there a way to fix it? [.onDrag { if FileManager.default.fileExists(atPath: file.path) { // Provide the file as an item for dragging let fileURL = URL(fileURLWithPath: file.path) let itemProvider = NSItemProvider(contentsOf: fileURL) // Remove the file extension in the suggestedName let baseNameWithoutExtension = fileURL.deletingPathExtension().lastPathComponent itemProvider?.suggestedName = baseNameWithoutExtension return itemProvider ?? NSItemProvider() } else { // Handle the case where the file no longer exists print("File no longer exists at path: \(file.path)") return NSItemProvider() } })
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341
Dec ’24
Issue with Custom Error Message on invalidate in CoreNFC APDU Tag Reader Session
Hi everyone, I'm working on an NFC-related app using CoreNFC with APDU commands to read and write tags. I’ve encountered an issue when trying to handle the scenario where the user cancels the NFC session. Here’s what’s happening: When a user cancels the NFC session manually (e.g., by tapping "Cancel"), I see an error log indicating tagReaderSession|userCancelled. However, when I explicitly call session.invalidate(errorMessage: "No NFC tag found") in my code to handle a scenario where no tag is detected, the session still shows the error as userCancelled instead of my custom error message. This behavior is confusing both in terms of debugging and for providing feedback to users, as I expect my custom message to appear instead of the generic "user cancelled" message. func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) { // Session becomes active } func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) { // Handle tag detection logic } func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: Error) { print("Session invalidated with error: \(error.localizedDescription)") } func handleNoTagDetected(session: NFCTagReaderSession) { session.invalidate(errorMessage: "No NFC tag found") } I call handleNoTagDetected(session:) explicitly when no tag is detected, expecting the custom error message to show. However, the system still shows the cancellation error. Has anyone else experienced this behavior? Is this the intended behavior for CoreNFC, or am I missing something in my implementation? Any guidance would be appreciated. Thanks in advance!
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375
Jan ’25
"No Such Module" When Using Mergable Libraries In a Static XCFramework
I'm attempting to create a proof of concept of a static library, distributed as an XCFramework, which has two local XCFramework dependencies. The reason for this is because I'm working to provide a single statically linked library to a customer, instead of providing them with the static library plus the two dependencies. The Issue With a fairly simple example project, I'm not able to access any code from the static library without the complier throwing a "No such module" error and saying that it cannot find one of the dependent modules. Project Layout I have an example project that has some example targets with basic example code. Example Project on Github Target: FrameworkA Mach-0 Type: Dynamic Build Mergable Library: Yes Skip Install: No Build Libraries For Distribution: Yes Target: FrameworkB Mach-0 Type: Dynamic Build Mergable Library: Yes Skip Install: No Build Libraries For Distribution: Yes XCFrameworks are being generated from these two targets using Apple's recommendations. I've verified that the mergable metadata is present in both framework's Info.plist files. Each exposes a single struct which will return an example String. Finally I have my SDK target: Target: ExampleKit Mach-0 Type: Static Build Mergable Library: No Create Merged Binary: Manual Skip Install: No Build Libraries For Distribution: Yes The two .xcframework files are in the Target's folder structure as well. The "Link Binary With Libraries" build phase includes them and they're Required. Inside of the ExampleKit target, I have a single public struct which has two static properties which return the example strings from FrameworkA and FrameworkB. I then have another script which generates an XCFramework from this target. Expectations Based on Apple's documentation and the "Meet Mergable Libraries" WWDC session I would expect that I could make a simple iOS app, link the ExampleKit.xcframework, import ExampleKit inside of a file, and be able to access the single public struct present in ExampleKit. Unfortunately, all I get is "No such module FrameworkA". I would expect that FrameworkA and FrameworkB would have been merged into ExampleKit? I'm really unsure of where to go from here in debugging this. And more importantly, is this even a possible thing to do?
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230
Mar ’25
Device UDID duplicated 6 times in Enterprise Account Devices list
Sometime since July 2024 the list of devices in our Enterprise Account is showing the same device and UDID 6 times. Looking at the DATE REGISTERED field it is apparent that each instance of the device represents the 'old' device that should have been 'deleted' when the annual device reset was actioned. The date registered field shows dates with 2019, 2020, 2021, and so till 2024 (most recent). I have 'disabled' two of the entries to see what happens, and those instances were disabled as expected without impacting the other instances. However, when attempting a re-enable of them, an error throws saying that they cant be enabled because that UDID already exists - obviously the other instances. For now, I have left 4 active duplicates in place, and the 2 disabled ones as they are, and plan to deal with this again - if it re-occurs in 2025. It does not seem to have impacted provisioing profiles - so will leave well enough alone. I am sure if I disable all of them, I will not be able to re-enabled any of them. Is this a know issue? Is this the best strategy? - ie, wait till device reset next year and hope issue is resolved. This post had similar issue, in 2023, but no response Forum Post 733264
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431
Nov ’24
"Trust This Computer?" glitch
Hello everyone, my iPhone keep on showing multiple "Trust this Computer" alert simultaneously which I cannot tap on it to Trust. As a result, I cannot run my XCode project on my device. Does anyone has any ideas or solutions to fix this ? Solution I have tried: Reset Location & Privacy Reset Network Settings Enable Developer Mode Restart Device My devices specs: iPhone 15 Pro: iOS 18.2.1 Macbook Pro M3 Max: Sequoia 15.1.1
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221
Jan ’25
The file .xcworkspace does not exist
I have an xCode project called Vision + CoreML I wanted add some charts into it so I started installing cocoapad for the first time I followed all the steps from installing the latest ruby version to running pod install The critical .xcworkspace had been never created no matter how many times pod install was run. It is nowhere to be found. Could anyone advise me on what went wrong here? Here are some files used to generate Podfile platform :ios, '15.0' target 'Vision + CoreML' do use_frameworks! # Comment the next line if you don't want to use dynamic frameworks pod 'Alamofire', '~> 5.6' # Pods for Vision + CoreML pod 'Charts' end and here is the command prompt output ls MacBook-Pro-3:NotAbgabe myusername$ ls App Main View Configuration Models Documentation Podfile Extensions README.md Image Predictor Vision+Core-ML.xcodeproj LICENSE I ran all the commands under the NotAbgabe folder. Not sure if xcworkspace is hidden somewhere between the files
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511
Jan ’25
Investigating Third-Party IDE Integration Problems
I regularly see questions from folks who’ve run into problems with their third-party IDE on macOS. Specifically, the issue is that their IDE is invoking Apple’s command-line tools — things like clang and ld — and that’s failing in some way. This post collects my ideas on how to investigate, and potentially resolve, issues like this. If you have any questions or comments, please put them in a new thread here on DevForums. Tag it appropriately so that I see it. Good tags include Compiler, Linker, LLVM, and Command Line Tools. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com" Investigating Third-Party IDE Integration Problems Many third-party IDEs rely on Apple tools. For example, the IDE might run clang to compile C code or run ld to link object files. These IDEs typically don’t include the tools themselves. Rather, they rely on you to install Xcode or Apple’s Command Line Tools package. These are available at Apple > Developer > Downloads Occasionally I see folks having problems with this. They most typically report that basic stuff, like compiling a simple C program, fails with some mysterious error. If you’re having such a problem, follow the steps below to investigate it. IMPORTANT Some IDEs come with their own tools for compiling and linking. Such IDEs are not the focus of this post. If you have problems with an IDE like that, contact its vendor. Select Your Tools macOS has a concept of the current command-line tools. This can either point to the tools within Xcode or to an installed Command Line Tools package. To see which tools are currently selected, run xcode-select with the --print-path argument. This is what you’ll see if you have Xcode installed in the Applications folder: % xcode-select --print-path /Applications/Xcode.app/Contents/Developer Note All of the tools I discuss here are documented in man pages. If you’re not familiar with those, see Reading UNIX Manual Pages. And this is what you’ll see with a Command Line Tools package selected. % xcode-select --print-path /Library/Developer/CommandLineTools There are two common problems with this: It points to something you’ve deleted. It points to something unexpected. Run the command above to see the current state. If necessary, change the state using the --switch option. For example: % xcode-select --print-path /Applications/Xcode.app/Contents/Developer % clang -v Apple clang version 14.0.3 (clang-1403.0.22.14.1) … % sudo xcode-select --switch ~/XcodeZone/Xcode-beta.app % clang -v Apple clang version 15.0.0 (clang-1500.0.38.1) … I have Xcode 14.3 in the Applications folder and thus clang runs Clang 14.0.3. I have Xcode 15.0b5 in ~/XcodeZone, so switching to that yields Clang 15.0.0. It’s possible to run one specific command with different tools. See Select Your Tools Temporarily, below. Run a Simple Test A good diagnostic test is to use the selected command-line tools to compile a trivial test program. Consider this C [1] example: % cat hello.c #include <stdio.h> int main(int argc, char ** argv) { printf("Hello Cruel World!\n"); return 0; } % clang -o hello hello.c % ./hello Hello Cruel World! IMPORTANT If possible, run this from Terminal rather than, say, over SSH. You may need to expand this test program to exercise your specific case. For example, if your program is hitting an error when it tries to import the Core Foundation framework, add that import to your test program: % cat hello.c #include <stdio.h> #include <CoreFoundation/CoreFoundation.h> int main(int argc, char ** argv) { printf("Hello Cruel World!\n"); return 0; } When you compile your test program, you might see one of these results: Your test program compiles. Your test program fails with a similar error. Your test program fails with a different error. I’ll explore each case in turn. [1] For a C++ example, see C++ Issues, below. If your test program compiles… If your test program compiles from the shell, that proves that your basic command-line tools setup is fine. If the same program fails to compile in your IDE, there’s something IDE-specific going on here. I can’t help you with that. I recommend that you escalate the issue via the support channel for your IDE. If your test program fails with a similar error… If your test program fails with an error similar to the one you’re seeing in your IDE, there are two possibilities: There’s a bug in your test program’s code. There’s an environmental issue that’s affecting your command-line tools setup. Don’t rule out the first possibility. I regularly see folks bump into problems like this, where it turns out to be a bug in their code. For a specific example, see C++ Issues, below. Assuming, however, that your test program’s code is OK, it’s time to investigate environmental issues. See Vary Your Environment, below. If your test program fails with a different error… If your test program fails with a different error, look at the test program’s code to confirm that it’s correct, and that it accurately reflects the code you’re trying to run in your IDE. Vary Your Environment If your test program fails with the same error as you’re seeing in your IDE, and you are sure that the code is correct, it’s time to look for environmental factors. I typically do this with the steps described in the next sections, which are listed from most to least complex. These steps only tell you where things are going wrong, not what is going wrong. However, that’s often enough to continue the investigation of your issue. Vary Your Shell Try running your commands in a different shell. macOS’s default shell is zsh. Try running your commands in bash instead: % bash … bash-3.2$ clang -o hello hello.c bash-3.2$ ./hello Hello Cruel World! Or if you’ve switched your shell to bash, try it in zsh. Vary Your User Account Some problems are caused by settings tied to your user account. To investigate whether that’s an issue here: Use System Settings > Users & Groups to create a new user. Log in as that user. Run your test again. Vary Your Mac Some problems are system wide, so you need to test on a different Mac. The easiest way to do that is to set up a virtual machine (VM) and run your test there. Or, if you have a separate physical Mac, run your test on that. Vary Your Site If you’re working for an organisation, they may have installed software on your Mac that causes problems. If you have a Mac at home, try running your test there. It’s also possible that your network is causing problems [1]. If you have a laptop, try taking it to a different location to see if that changes things. [1] I rarely see this when building a simple test program, but it do see it with other stuff, like code signing. C++ Issues If you’re using C++, here’s a simple test you can try: % cat hello.cpp #include <iostream> int main() { std::cout << "Hello Cruel World!\n"; } % clang++ -o hello hello.cpp % ./hello Hello Cruel World! A classic problem with C++ relates to name mangling. Consider this example: % cat hello.c #include <stdio.h> #include "hello-core.h" int main(int argc, char ** argv) { HCSayHello(); return 0; } % cat hello-core.cpp #include "hello-core.h" #include <iostream> extern void HCSayHello() { std::cout << "Hello Cruel World!\n"; } % cat hello-core.h extern void HCSayHello(); % clang -c hello.c % clang++ -c hello-core.cpp % clang++ -o hello hello.o hello-core.o Undefined symbols for architecture x86_64: "_HCSayHello", referenced from: _main in hello.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) The issue here is that C++ generates a mangled name for HCSayHello: % nm hello-core.o | grep HCSayHello 0000000000000000 T __Z10HCSayHellov whereas C uses the non-mangled name: % nm hello.o | grep HCSayHello U _HCSayHello The fix is an appropriate application of extern "C": % cat hello-core.h extern "C" { extern void HCSayHello(); }; Select Your Tools Temporarily Sometimes you want to temporarily run a command from a particular tools package. To continue my earlier example, I currently have Xcode 14.3 installed in the Applications folder and Xcode 15.0b5 in ~/XcodeZone. Xcode 14.3 is the default but I can override that with the DEVELOPER_DIR environment variable: % clang -v Apple clang version 14.0.3 (clang-1403.0.22.14.1) … % DEVELOPER_DIR=~/XcodeZone/Xcode-beta.app/Contents/Developer clang -v Apple clang version 15.0.0 (clang-1500.0.38.1) … Revision History 2025-01-27 Remove the full width characters. These were a workaround for a forums platform bug that’s since been fixed. Made other minor editorial changes. 2023-07-31 First posted.
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1.7k
Jan ’25
WeatherKit "Pricing and Additional Endpoints" question.
In the availability and pricing section, we have reviewed the plans and we will be upgrading to 50 or 100 million calls/month but before we do, we have a couple questions. Does the API have rate limit or throttling? Do you have additional weather forecast endpoints like hail, radar, or pollen forecast? I see in this thread https://developer.apple.com/forums/thread/795642 that air quality is not available Thanks
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107
Aug ’25
CoreHaptics.AssetPickerDrawer throws exceptions and draws incorrectly when fieldInfo or assetType is null
There is a bug in Unity Plugins: Corehaptics.AssetPickerDrawer throws exceptions and draws incorrectly when fieldInfo or assetType is null (FB17305973). I fixed it and created a pull request: https://github.com/apple/unityplugins/pull/47 It has been months and this bug is really annoying.
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44
Jun ’25
React-Native app XCode build on IOS
First time user here. Trying to build my React-Native app on xcode. I keep getting "Could not build Module" and "missing package product" and tried many combination for my Podfile. I am on macbook pro M2, XCode version 16.2, building on iphone 16 v18.3.1. Pod version 1.16.2, react-native-cli:2.0.1, Here is my Podfile. I tried to assign modular_headers to individual Firebase packages but then I cant pod install. require_relative '../node_modules/react-native/scripts/react_native_pods' require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules' use_modular_headers! platform :ios, '18.0' prepare_react_native_project! target 'plana' do config = use_native_modules! use_react_native!( :path => config[:reactNativePath], :fabric_enabled => false, :app_path => "#{Pod::Config.instance.installation_root}/.." ) post_install do |installer| react_native_post_install( installer, config[:reactNativePath], :mac_catalyst_enabled => false, ) end end
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96
May ’25
On-demand resource exporting?
I'm a newbie to on-demand resources and I feel like I'm missing something very obvious. I've successfully tagged and set up ODR in my Xcode project, but now I want to upload the assets to my own server so I can retrieve them from within the app, and I can't figure out how to export the files I need. I'm following the ODR Guide and I'm stuck at Step #4, after I've selected my archive in the Archives window it says to "Click the Export button", but this is what I see: As shown in the screenshot, there is no export button visible. I have tried different approaches, including distributing to appstore connect, and doing a local development release. The best I've been able to do is find a .assetpack folder inside the archive package through the finder, but uploading that, or the asset.car inside it, just gives me a "cannot parse response" error from the ODR loading code. I've verified I uploaded those to the correct URL. Can anyone walk me through how to save out the file(s) I need, in a form I can just upload to my server? Thanks, Pete
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44
May ’25
Developing First Ever IOS App - Have Very Specific Questions to Unblock my Testing
I have developed an app that I had been testing on the hardware device with the developer profile signed builds, I had setup a CloudKit container in development mode and also had tested with Production mode and they are working as expected. I have also tested storekit auto renewal subscriptions using Storekit Config file and all of that is working on the hardware device with the developer profile signed builds. Now comes the Fun Part, I want to use the Distribution profile to test the app for production readiness, I had created a distribution profile and had set that up in the Release under target of the app in Xcode, I have also created sandbox tester account (which is showing inactive even after 7 days - though I am also logged in with this sandbox tester account on a hardware device and under developer setting it shows as a sandbox tester account) All the subscriptions are showing Ready to Submit in the App Store Connect. I need help understand this whole flow, how to ensure I can test CloudKit and storekit for production readiness and then publish my app for the review. Thank you.
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278
Feb ’25