At WWDC25 we launched a new type of Lab event for the developer community - Group Labs. A Group Lab is a panel Q&A designed for a large audience of developers. Group Labs are a unique opportunity for the community to submit questions directly to a panel of Apple engineers and designers. Here are the highlights from the WWDC25 Group Lab for Developer Tools. Will my project codebase be used for training when I use Xcode's intelligent assistant powered by cloud-based models? When using ChatGPT without logging in, your data will not be used to improve any models. If you log in to a ChatGPT account, this is based on your ChatGPT account settings, which allows you to opt-out (it defaults to on). When using Xcode with accounts for other model providers, you should check with the policies of your provider. And finally, at no point will any portion of your codebase be used to train or improve any Apple models. We'd love to make our SwiftUI Previews (and soon, Playgrounds) as snappy as possible. Is there any way to skip certain build steps, such as running linters? It seems the build environment is exactly the same (compared to a debug build), but maybe there's a trick. Starting with Xcode 16, SwiftUI previews use the exact same build artifacts as the regular build. The new Playgrounds support in Xcode 26 uses these build artifacts too. Shell script build phases are the most common thing that introduces extra build time, so as a first step, try turning off all shell script build phases (like linters) to get an idea if that’s the issue. If those build phases add significant time to your build, consider moving some of those phases into asynchronous steps, such as running linters before committing instead of on every build. If you do need a shell script build phase to run during your build, make sure to explicitly define the input and output files, as that is a huge way to improve your build performance. Are we able to provide additional context for the models, like coding standards? Documentation for third party dependencies? Documentation on your own codebase that explains things like architecture and more? In general, Xcode will automatically search for the right context based on the question and the evolving answer, as the model can interact multiple times with your project as it develops an answer. This will automatically pick up the coding style of the code it sees, and can include files that contain architecture comments, etc. Beyond automatic context, you can manually attach other documents, even if they aren't in your project. For example, you could make a file with rules and ideas and attach it, and it will influence the response. We are very aware of other kinds of automatic context like rule files, etc, though Xcode does not support these at this time. Once ChatGPT is enabled for Coding Intelligence in Xcode 26, and I sign into my existing ChatGPT account, will the ChatGPT Coding Intelligence model in Xcode know about chat conversations on Xcode development done previously in the ChatGPT Mac app? Xcode does not use information from other conversations, and conversations started in Xcode are not accessible in the web UI or ChatGPT app. Is there a plan to make SwiftUI views easier to locate and understand in the view hierarchy like UIKit views? SwiftUI uses a declarative paradigm to define your user interface. That allows you to specify what you want, with the system translating that into an efficient representation at runtime. Unlike traditional AppKit and UIKit, seeing the runtime representation of SwiftUI views isn't sufficient in order to understand why it's not doing what you want. This year, we introduced a SwiftUI Instrument that shows why things are happening, like view re-rendering. Is it possible to use the AI chat with ChatGPT Enterprise? My company doesn't allow us to use the general ChatGPT, only the enterprise version they have setup that prevents data from being leaked Yes, Xcode 26 supports logging into any existing ChatGPT account, including enterprise accounts. If that does not meet your needs, you can also setup a local server that implements the popular chat completions REST API to talk to your enterprise account how you need. Now that Icon Composer is here, how does it complement or replace existing vector design tools such as Sketch for icon design? Icon Composer complements your existing vector design tools. You should continue to create your shapes, gradients, and layers in another tool like Sketch, and compose the exported SVG layers in Icon Composer. Once you bring your layers into Icon Composer, you can then use it to influence the translucency, blur, and specular highlights for your icon. What’s one feature or improvement in the new Xcode that you personally think developers will love, but might not immediately discover? Maybe something tucked away or quietly powerful that’s flown under the radar so far? One feature we're particularly excited about is the new power profiler for iOS, which gives you further insights into the energy consumption of your app beyond what was possible with the energy instrument previously. You can learn more about how to use this instrument and how it can help you greatly reduce your apps battery usage in the documentation, as well as the session Profile and optimize power usage in your app. There were also improvements in accessibility this year with Voice Control, where you can naturally speak your Swift code to Xcode, and it understands the Swift syntax as you speak. To see it in action, take a look at the demonstration in What’s new in Xcode 26. We have a software advisory council that is very sensitive to having our private information going to the cloud in any form. What information do you have to help me guide Xcode and Apple Intelligence through the acceptance process? One thing you can do is configure a proxy for your enterprise that implementing the popular Chat Completions API endpoint protocol. When using a model provider via URL, you can use your proxy endpoint to inspect the network traffic for anything that you do not want sent outside of your enterprise, and then forward the traffic through the proxy to your chosen model provider. Are there list of recommended LLMs to use with Xcode via Intelligence/Local? I've tried Gemma3-12B, but.. I hope there are better options? Apple doesn't have a published list of recommended local models. This is a fast-moving space, and so a recommendation would become out of date very quickly as new models are released. We encourage you to try out the local model support in Xcode 26 with models that you find meet your needs, and let us and the community know! (continued below)

I have an Iphone application in OBJECTIVE-C and I wanted to and an iPad version . I added the required values in the .plist via the editor (and and iPad to the hardware selection) and in the info of the appli : IPAD screen was not loaded , with no error message on the console. Absolutely no error message. Simulator and real iPad produce the same results. I did a new more test . File, new, file from template and created a new project (objective-c) with a simple Dashboard and a ViewController that is installed by default and populated by Xcode. It works without Errors with iPhone. If I add the iPad values in the plist and info : no IPAd screen loaded, no error in the console. Another test , this time I ask Swift as langage (I dont use this langage it was just for a test). Create a new project, simple Swift application with a storyboard and a ViewController. I add the .plist and.info value (Screenshot) an iPad storyboard and the same exact problem arrives. No loading of the iPad storyboard, No error message in the console. And iPad storyboard is correct , I I force it as the main screen , in "storyboard name" , it is loaded without and error on the iPad and the iPhone. but i dont want that, I want TWO storyboard and the iPad users sent to their interface, with their launchimage IS THIS A BUG IN XCODE 16.2 ? DID I MISS SOMETHING ?I did not found and other "iPad" strings to add to plist/info. I use Xcode Version 16.2 (16C5032a)

I'm attempting to test an in app purchase for my app on my phone (not in a simulator, not sandbox testing). I'm getting an error that certificate check has failed. Could this have anything to do with the SHA-1 warnings that Apple has recently mentioned? I've tried regenerating my StoreKit file, cleaning the build, restarting XCode, resetting all of my devices purchases from the Debug > StoreKit menu, all with no luck. Any help would be greatly appreciated. 2025-01-10 19:52:19.974564-0500 MyApp[74478:30675548] [Default] Failed to verify certificate chain due to client recoverable failure: Error Domain=NSOSStatusErrorDomain Code=-67818 "“StoreKit Testing in Xcode” certificate is expired" UserInfo={NSLocalizedDescription=“StoreKit Testing in Xcode” certificate is expired, NSUnderlyingError=0x3027b9d40 {Error Domain=NSOSStatusErrorDomain Code=-67818 "Certificate 0 “StoreKit Testing in Xcode” has errors: Certificate is not temporally valid;" UserInfo={NSLocalizedDescription=Certificate 0 “StoreKit Testing in Xcode” has errors: Certificate is not temporally valid;}}} 2025-01-10 19:52:19.978233-0500 MyApp[74478:30675483] [Default] Failed to verify signature for Transaction, will assume invalid: failedToVerifyCertificateChain Purchase succeeded but verification failed: Certificate Chain Invalid Failed to purchase Premium: invalidCertificateChain saveUnencrypted: Started saving form_info.json saveUnencrypted: Saved form_info.json to Documents Directory in 9 ms (JSONEncoder chunk-based copy-on-write, 1 chunks) at ...

I was just comparing the build settings of two of my apps to try to understand why they behave differently (one of them uses the full screen on iPad, and the other one has small top and bottom black borders, although that's not the issue I want to discuss now). I saw that the option CLANG_CXX_LANGUAGE_STANDARD is set to gnu++0x for the older project, while it's set to gnu++17 for the newer one. The documentation lists different possible values and also a default one: Compiler Default: Tells the compiler to use its default C++ language dialect. This is normally the best choice unless you have specific needs. (Currently equivalent to GNU++98.) If it really is the best choice (normally), why is it not used when creating a new default Xcode project? Or is it better to select a newer compiler version (GNU++98 sounds quite old compared to GNU++17)? Also, does this affect Swift code?

I implemented AppTrackingTransparency framework but Apple is rejecting the review because it seems the request is failing on iPadOS 18.3.1. which seems rare since it is working on all other devices. Has anyone faced the same issue? I have tested this in a physical iPhone with IOS 18.3.1 and in several devices using Xcode runtime simulator including iPad and iPhone in different IOS versions up to 18.2 (which I understand is the latest available in Xcode). The problem is that 18.3.1 runtime simulator is not available yet. Does anyone have more information when it will be available or what to do in these cases?

how to fix swift preview on real device no showing

Example: I have a state var curHighScore declared in ContentView. I select it, right click and select "Find Selected Symbol in Workspace" The result is : 1 resul in 1 file, i.e. the line of declaration of the var But obviously, the same var is used at line #102: How come this occurence is not found by the search command. Such happens every now and then. Is there something I am missing ? What is causing this ? Thanks for your help.

Like the title says, I'll commit some changes no problem with my Git name and email displayed properly, then work for a while longer and when use the integrate menu to stage and commit I find the git name/email are empty. My credentials are properly entered in settings. The only fix i've found is quitting and restarting. Any less frustrating option?

I have the 'warnings as errors' policy set to Yes for Apple Clang and Swift compiler. As far as I know, there is no way to make exceptions to the warning policies from Swift compiler (correct me if I am wrong), what about Clang warning policies, specifically when it comes to header files from 3rd party pods? They don't show up on the Compile Sources so I can't apply flags such as -Wno-error=deprecated to them. Adding #pragma GCC... to them won't help as a fresh pod install will wipe the #pragma statements out. Is there a way to exclude the header files from pods from getting the warning policies from Clang so I won't see errors from them when compiling Clang modules that's a part of the build process?

I have a warning on my AR app Virtual Tags that since July does not show its camera information telling: "ARCL.SceneLocationView implements focusItemsInRect: - caching for linear focus movement is limited as long as this view is on screen." I tried inserting the function, but documentation does not explain what it should return and how to generate it. Is someone able to help me? Thanks,

We’re developing an iPad application that visualizes 2D and 3D building floor plans, including a mesh network of nodes that control lighting and climate. The node count ranges from 1,000 to 15,000. We’re using SceneKit to dynamically render the floor plan and node mesh on an iPad 10th generation running iPadOS 18.3. While the core visualization works, we are experiencing significant performance degradation as the node count increases. Specifically: At 750–1,000 nodes, UI responsiveness noticeably declines. At 2,000 nodes, navigating the floor plan becomes nearly unusable. We attempted to optimize performance with a Geometric Pool algorithm, but the impact was minimal. Strangely, the same iPad handles 30,000+ 3D objects effortlessly when using Unity or Unreal Engine, raising the question of whether SceneKit may not be optimized for this scale. Our questions: Is SceneKit suitable for visualizing such large node counts, or are we hitting an inherent limitation of the framework? Are there best practices or optimization techniques for SceneKit that we might be missing? Should we consider a hybrid approach or fully transition to a different 3D engine for this use case? We’ve attached a code sample below demonstrating the issue. Any insights, suggestions, or experiences would be greatly appreciated! ContentView.swift

I am using Xcode 15.2. I am loading a URL in a WKWebView, but a hand cursor appears above the web view. Scrolling up and down does not work. I tried adjusting the scroll bounds and isUserInteractionEnabled, but the hand cursor is still visible. How can I fix this?

When Xcode 16.2 connects iPad to real machine debugging using the view in the picture box, the mac will be stuck directly, the computer cursor will disappear, and the computer cannot do any operation

Hi iOS peeps ! Was just wondering if anyone has had this issue before with String Catalogs. I have an iOS project where I am using String Catalogs for localisation ( the project is split up into multiple local swift packages with each project having its own Localizable.xcstrings ) and the app currently only supports en as the base and en-US for US localisation During the build process however some of the swift packages only produce the en-US localisation and is missing the en default localisation in the binary. Having a look at the build log for some xcstringstool will only produce one set of Localizable.strings (en-US.lproj) instead of (en.lproj and en-US.proj) I haven't been able to find much documentation from Apple on xcstringstool as well / not sure where to find more info about this

My swiftUI project has started to constantly display "Cannot find 'symbol' in scope" errors in code i haven't touched, and the project still compiles fine. Neither cleaning build folder or compiling fix the errors, but if I right click the symbol, select "jump to definition" it will find it without problem and then when I return to the original file the error will be cleared. What can I do to stop these from happening?

Hello, Is anyone experiencing devices on OS 17 disconnecting from Xcode 15 and 16 Beta? I remember there were a lot of past conversations around the time when iOS 17 released but it seems to still be happening even after using Xcode 16 beta. Re-pairing devices and rebooting the hosts appear to fix it temporarily. I discovered that killing the remoted process also allows xcode to reconnect to the devices. Using Xcode 16's devicectl also doesn't work. I have my devices connected to a USB Hub and to multiple devices. The odd thing is I have iOS 16 devices connected and those don't disconnect. I believe iOS 17 introduced a new coredevice stack to connect but has anyone found a fix for it or have any recommendations? TN3158 isn't relevant in my situation because VPN and Packet filtering is not in use and I filed feedback with Apple but they have't responded in a long time.

Hi all, reposting from here: https://unix.stackexchange.com/questions/789849/xattr-c-not-removing-com-apple-finderinfo-attribute I was trying to build my Xcode project, but ran into the error "resource fork, Finder information, or similar detritus not allowed." I was following the solutions from this stack exchange post, but xattr seems to not be working as expected. Basically, running xattr -cr . on my project directory successfully removes all xattrs except for com.apple.FinderInfo, which persists on all .xcodeproj and .xcworkspace files. I've tried everything under the sun, from xattr -d to sudo to dot_clean to tar to rsync and nothing can remove it. Is this just some kind of immortal attribute? It's preventing me from building my project. I'm at a loss here, this is my senior thesis project.

Since updating Xcode to 16.2 I get the following message when attempting to build the project. SWIFT_VERSION '' is unsupported, supported versions are: 4.0, 4.2, 5.0, 6.0. The issue I have is that the project is pure objective-c. There is zero Swift code in the project so am struggling to understand why this error is being generated. Welcome assistance. Graeme

I tried to monitor the device's network status with Network framework code below. let networkMonitor = NWPathMonitor(requiredInterfaceType: .cellular) networkMonitor.pathUpdateHandler = { [weak self] path in     if path.status == .satisfied {         print("Cellular Satisfied")     } else {         print("Cellular Unsatisfied")     } } When I run the app in my iPhone(iOS 15.5) and turn cellular on/off, iPhone suddenly loses connection with XCode. Lost connection to the debugger on “...'s iPhone”. Domain: IDEDebugSessionErrorDomain Code: 12 Recovery Suggestion: Restore the connection to “...'s iPhone” and run “...” again, or if “...” is still running, you can attach to it by selecting Debug > Attach to Process > .... User Info: {     DVTErrorCreationDateKey = "2022-06-23 02:16:30 +0000";     IDERunOperationFailingWorker = DBGLLDBLauncher; } Analytics Event: com.apple.dt.IDERunOperationWorkerFinished : {     "device_model" = "iPhone13,2";     "device_osBuild" = "15.5 (19F77)";     "device_platform" = "com.apple.platform.iphoneos";     "launchSession_schemeCommand" = Run;     "launchSession_state" = 2;     "launchSession_targetArch" = arm64;     "operation_duration_ms" = 5861;     "operation_errorCode" = 12;     "operation_errorDomain" = IDEDebugSessionErrorDomain;     "operation_errorWorker" = DBGLLDBLauncher;     "operation_name" = IDEiPhoneRunOperationWorkerGroup;     "param_consoleMode" = 0;     "param_debugger_attachToExtensions" = 0;     "param_debugger_attachToXPC" = 1;     "param_debugger_type" = 5;     "param_destination_isProxy" = 0;     "param_destination_platform" = "com.apple.platform.iphoneos";     "param_diag_MainThreadChecker_stopOnIssue" = 0;     "param_diag_MallocStackLogging_enableDuringAttach" = 0;     "param_diag_MallocStackLogging_enableForXPC" = 1;     "param_diag_allowLocationSimulation" = 1;     "param_diag_gpu_frameCapture_enable" = 0;     "param_diag_gpu_shaderValidation_enable" = 0;     "param_diag_gpu_validation_enable" = 0;     "param_diag_memoryGraphOnResourceException" = 0;     "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_stopOnIssue" = 0;     "param_diag_showNonLocalizedStrings" = 0;     "param_diag_viewDebugging_enabled" = 1;     "param_diag_viewDebugging_insertDylibOnLaunch" = 1;     "param_install_style" = 0;     "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_runnable_swiftVersion" = "5.6";     "param_runnable_type" = 2;     "param_testing_launchedForTesting" = 0;     "param_testing_suppressSimulatorApp" = 0;     "param_testing_usingCLI" = 0;     "sdk_canonicalName" = "iphoneos15.4";     "sdk_osVersion" = "15.4";     "sdk_variant" = iphoneos; } In my opinion, it seems like an error of XCode. Plz let me know if there's any solution. Also, there's a similar issue here : https://developer.apple.com/forums/thread/681459

Hello, I have tried to add Sign in with Apple to my application, and I get to the point where the app asks which AppleID to use and does succesfull facial recognition, but does not return failed or successful validation - the loading animation does not end and just keeps going. I have tried to create the sertificates and provision profiles again. I have also set the entitlements file Apple access level to Default. I don't understand what is going wrong here. Can the certificates be in wrong place? Is something wrong with the code?

I can't add my iPhone to my Apple Developer team, even though my iPhone is properly connected to my Mac.