Build, test, and submit your app using Xcode, Apple's integrated development environment.

Xcode Documentation

Posts under Xcode subtopic

Post

Replies

Boosts

Views

Created

Compiling old code with XCode give the error [XSym <- Unknown type name ‘Xsym’]
When I try to compile with XCode an app that is about 10 years old gives me the following compiler errors in JSONModel.h header file. There are only 4 lines in that file. Content of file with the error messages. XSym <- Uknown type name ‘Xsym’ 0075 <- Expected identifier or ‘(’ a7b090c047283ff76fc7f1def7ba7425 ../../../JSONModel/JSONModel/JSONModel/JSONModel.h The app was originally compiled wit XCode 3.2, targeting iPhone 7 Now I am using XCode 16, targeting iPhone 12. Original coder is unaccessible. I am very new to this environment and any guidance / assistance is greatly appreciated. Please let me know if it is more appropriate to post this somewhere else.
1
0
216
Feb ’25
Unincluded dependencies failing to build for watchOS companion app.
When trying to use the watchOS preview the simulator fails to load and throws about 15 errors. Clearly the simulator is trying to load all of the iOS packages to the watchOS simulator. However, these packages clearly aren't included in the watchOS app. Furthermore, both apps build successfully to the main simulators, just not the previews. Having a list of errors that simply should not be there is a pretty big annoyance when something is going wrong. How do I fix this?
0
0
309
Feb ’25
Toggle off inline pull request comments in Xcode
Xcode renders a beautiful bubble with PR comments inline with my code. However, I'd like to edit my code without that comment in the way. How do I turn / toggle that feature off? I've looked through Settings for editing and source control, menus for the editor and view, as well as the drop down menus and diff toggles for the specific editor box.
1
0
210
Feb ’25
Option to download SDK Seperatly.
Hey Guys , I think forcing people to download Simulator along side SDK will increase hude download size, is not a good experience for developers. Make simulator download optional and you can keep it ticked by default inside (Settings/Components/IOS XX.X Support) for beginner developers , but for advanced developer there should be option to untick it and reduce huge download size. If it doesn't result in huge download size,then we have took a wrong turn somewhere.
0
1
251
Feb ’25
Apple developer
in xcode i have select the developer team. but show some error that is here, "Communication with Apple failed Your team has no devices from which to generate a provisioning profile. Connect a device to use or manually add device IDs in Certificates, Identifiers & Profiles. https://developer.apple.com/account/" and show this error also "No profiles for 'com.kuntaldoshi.homeautomation' were found Xcode couldn't find any iOS App Development provisioning profiles matching 'com.kuntaldoshi.homeautomation'."
0
0
384
Feb ’25
Swift, kevent, and wth?!?!?
I have this code: var eventIn = kevent(ident: UInt(self.socket), filter: Int16(EVFILT_WRITE), flags: UInt16((EV_ADD | EV_ENABLE)), fflags: 0, data: 0, udata: nil ) I looked at it and thought why do I have those extra parentheses? So I changed it to var eventIn = kevent(ident: UInt(self.socket), filter: Int16(EVFILT_WRITE), flags: UInt16(EV_ADD | EV_ENABLE), // changed line! fflags: 0, data: 0, udata: nil ) and then kevent gave me EBADF. Does this make sense to anyone?
0
0
242
Feb ’25
Info.plist
Hello, im trying to get my app to be able to ask the device for permission to have access to the camera. To do so i created an info.plist and turned off the generate Info.plist file in packaging. I then added what i believe are all the necessary keys. However, when i try to build and test on my phone i keep running an error that says that my app has a missing or invalid CFBundleExecutable in its info.plist. I tried to fix it by adding Key: CFBundleExecutable Type: String Value: $(EXECUTABLE_NAME) However, this isnt working. I have already added a BundleIdentifier using my com.name.appname the Bundle version string and Bundle Version. Now im not fully sure what to put to fix this issue. Is there another way to get the camera to work without having to create an info.plist? Or is this the only way?
1
0
383
Feb ’25
Sequential Animation on Reality Composer Pro
Dear Developers, I am having some problems with Reality Composer Pro on Mac. Specifically, I don't understand how to manage some timeline functions. I have an object that has a double animation, an opening animation and a closing animation. On a first tap the object should open through animation 1, while on the second tap the object should close through animation 2. Only the two animations conflict. In addition, animation 1 does not stop at the last frame but returns the object to the position of frame 0. Do you have any solutions? Thank you all
0
0
354
Feb ’25
Quality of predictive code completion
I am so perturbed by Xcode's predictive code completion (PCC) - it operates like a 5 year old boy who constantly distracts me code by throwing up entirely irrelevant code sections even if there is nothing to complete. Even in cases where I have a long set of references (object dot something dot something etc), and PCC would be really handy, its list rarely has what is in the immediate scope of my source line as the first couple of suggestions. Additionally, its code suggestions (fully lines of code, structs etc) sort of skirt what might be possible mixed with code from elsewhere in my app. Quality of PCC is awful and at this point with CoPilot doing such a great job, chatGPT lose integration with Xcode, what is Apple thinking, are they serious about their hijacked AI term? I am open to suggestions, what (the heck) could I be doing wrong or should I refresh something. Right now I have turned off PCC, it is not helping.
1
0
380
Feb ’25
How to Export OBJ with Texture (JPG + MTL) from ARKit LiDAR Scan in iOS?
I am using ARKit with RealityKit to scan objects using LiDAR on iOS. I can generate an OBJ file from ARMeshAnchors, but I am missing the texture export (JPG + MTL). What I Have So Far: Successfully capturing mesh using ARMeshAnchor. Converting mesh into MDLAsset and exporting .obj. I need help generating the .jpg texture and linking it to the .mtl file. private func exportScannedObject() { guard let camera = arView.session.currentFrame?.camera else { return } func convertToAsset(meshAnchors: [ARMeshAnchor]) -> MDLAsset? { guard let device = MTLCreateSystemDefaultDevice() else {return nil} let asset = MDLAsset() for anchor in meshAnchors { let mdlMesh = anchor.geometry.toMDLMesh(device: device, camera: camera, modelMatrix: anchor.transform) // Apply a gray material to the mesh let material = MDLMaterial(name: "GrayMaterial", scatteringFunction: MDLScatteringFunction()) material.setProperty(MDLMaterialProperty(name: "baseColor", semantic: .baseColor, float3: SIMD3(0.5, 0.5, 0.5))) // Gray color if let submeshes = mdlMesh.submeshes as? [MDLSubmesh] { for submesh in submeshes { submesh.material = material } } asset.add(mdlMesh) } return asset } func export(asset: MDLAsset) throws -> URL { let directory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first! let url = directory.appendingPathComponent("scaned.obj") if MDLAsset.canExportFileExtension("obj") { do { try asset.export(to: url) return url } catch let error { fatalError(error.localizedDescription) } } else { fatalError("Can't export USD") } } if let meshAnchors = arView.session.currentFrame?.anchors.compactMap({ $0 as? ARMeshAnchor }), let asset = convertToAsset(meshAnchors: meshAnchors) { do { let url = try export(asset: asset) showScanPreview(url) } catch { print("export error") } } } extension ARMeshGeometry { func vertex(at index: UInt32) -> SIMD3<Float> { assert(vertices.format == MTLVertexFormat.float3, "Expected three floats (twelve bytes) per vertex.") let vertexPointer = vertices.buffer.contents().advanced(by: vertices.offset + (vertices.stride * Int(index))) let vertex = vertexPointer.assumingMemoryBound(to: SIMD3<Float>.self).pointee return vertex } // helps from StackOverflow: // https://stackoverflow.com/questions/61063571/arkit-3-5-how-to-export-obj-from-new-ipad-pro-with-lidar func toMDLMesh(device: MTLDevice, camera: ARCamera, modelMatrix: simd_float4x4) -> MDLMesh { func convertVertexLocalToWorld() { let verticesPointer = vertices.buffer.contents() for vertexIndex in 0..<vertices.count { let vertex = self.vertex(at: UInt32(vertexIndex)) var vertexLocalTransform = matrix_identity_float4x4 vertexLocalTransform.columns.3 = SIMD4<Float>(x: vertex.x, y: vertex.y, z: vertex.z, w: 1) let vertexWorldPosition = (modelMatrix * vertexLocalTransform).columns.3 let vertexOffset = vertices.offset + vertices.stride * vertexIndex let componentStride = vertices.stride / 3 verticesPointer.storeBytes(of: vertexWorldPosition.x, toByteOffset: vertexOffset, as: Float.self) verticesPointer.storeBytes(of: vertexWorldPosition.y, toByteOffset: vertexOffset + componentStride, as: Float.self) verticesPointer.storeBytes(of: vertexWorldPosition.z, toByteOffset: vertexOffset + (2 * componentStride), as: Float.self) } } convertVertexLocalToWorld() let allocator = MTKMeshBufferAllocator(device: device); let data = Data.init(bytes: vertices.buffer.contents(), count: vertices.stride * vertices.count); let vertexBuffer = allocator.newBuffer(with: data, type: .vertex); let indexData = Data.init(bytes: faces.buffer.contents(), count: faces.bytesPerIndex * faces.count * faces.indexCountPerPrimitive); let indexBuffer = allocator.newBuffer(with: indexData, type: .index); let submesh = MDLSubmesh(indexBuffer: indexBuffer, indexCount: faces.count * faces.indexCountPerPrimitive, indexType: .uInt32, geometryType: .triangles, material: nil); let vertexDescriptor = MDLVertexDescriptor(); vertexDescriptor.attributes[0] = MDLVertexAttribute(name: MDLVertexAttributePosition, format: .float3, offset: 0, bufferIndex: 0); vertexDescriptor.layouts[0] = MDLVertexBufferLayout(stride: vertices.stride); let mesh = MDLMesh(vertexBuffer: vertexBuffer, vertexCount: vertices.count, descriptor: vertexDescriptor, submeshes: [submesh]) return mesh } } What I Need Help With: How do I generate the JPG texture from the AR scene? How do I save an MTL file linking the OBJ model to the texture? How can I correctly apply the texture when viewing the OBJ in an external 3D viewer? I appreciate any guidance, including sample code or resources! If you have a complete working solution, I’d love to discuss further via private channels.
0
0
483
Feb ’25
Preview broken
Hello, I am doing the SwiftUI tutorial with Xcode 16.2 For the watch app the simulator working fine but the preview keep saying “This app cannot run on the selected target device.” while the preview is working …… For the macOS part the simulator working fine but the preview is totally broken with -> ”ContentView.swift” not found in any targets. While it is correctly added to the target … Please fix or make tutorial clear.
0
0
158
Feb ’25
Color picker not working
HStack{ FormLable(text: NSLocalizedString("Color", comment: "")) Spacer() Image(systemName: "circle.fill") .font(.system(size: AppFontSize.baseSize.size() * 1.2, weight: .medium)) .foregroundColor(color) .overlay(ColorPicker("Color", selection: $color).labelsHidden().opacity(0.015)) } This is how I use the color picker. I used the same code in two different apps, and the color picker appeared in one app but not in the other. By the way, I upgraded Xcode to the latest version.
2
0
403
Feb ’25
Does CLANG_CXX_LANGUAGE_STANDARD affect my Swift app and why is it not set to Compiler Default?
I was just comparing the build settings of two of my apps to try to understand why they behave differently (one of them uses the full screen on iPad, and the other one has small top and bottom black borders, although that's not the issue I want to discuss now). I saw that the option CLANG_CXX_LANGUAGE_STANDARD is set to gnu++0x for the older project, while it's set to gnu++17 for the newer one. The documentation lists different possible values and also a default one: Compiler Default: Tells the compiler to use its default C++ language dialect. This is normally the best choice unless you have specific needs. (Currently equivalent to GNU++98.) If it really is the best choice (normally), why is it not used when creating a new default Xcode project? Or is it better to select a newer compiler version (GNU++98 sounds quite old compared to GNU++17)? Also, does this affect Swift code?
2
0
433
Feb ’25
App terminated at launch exported on Xcode 16.2
when upgrading Xcode from 15.4 to 16.2, my apps crash at launch. device: iphone 14 pro max, iOS version 18.2.1 Termination Reason: DYLD 4 Symbol missing Symbol not found: _$s10Foundation4DateV4GRDB24DatabaseValueConvertibleA2dEP08databaseE0AD0dE0VvgTW Full Report Below: Full Report {"app_name":"myapp","timestamp":"2025-02-15 20:58:55.00 +0800","app_version":"5.25.0","slice_uuid":"dc349d86-392d-39fa-9cd3-daccab1db019","build_version":"0","platform":2,"bundleID":"com.xxxx.myapp","share_with_app_devs":1,"is_first_party":0,"bug_type":"309","os_version":"iPhone OS 18.2.1 (22C161)","roots_installed":0,"name":"myapp","incident_id":"99A2D5C2-3A04-47A7-9521-408E2287D0B4"} { "uptime" : 200000, "procRole" : "Foreground", "version" : 2, "userID" : 501, "deployVersion" : 210, "modelCode" : "iPhone15,3", "coalitionID" : 601, "osVersion" : { "isEmbedded" : true, "train" : "iPhone OS 18.2.1", "releaseType" : "User", "build" : "22C161" }, "captureTime" : "2025-02-15 20:58:55.5603 +0800", "codeSigningMonitor" : 2, "incident" : "99A2D5C2-3A04-47A7-9521-408E2287D0B4", "pid" : 8783, "translated" : false, "cpuType" : "ARM-64", "roots_installed" : 0, "bug_type" : "309", "procLaunch" : "2025-02-15 20:58:55.5448 +0800", "procStartAbsTime" : 5031986462126, "procExitAbsTime" : 5031986824477, "procName" : "myapp", "procPath" : "/private/var/containers/Bundle/Application/E0327E15-3AA9-42CA-8BEF-99076C11C04D/myapp.app/myapp", "bundleInfo" : {"CFBundleShortVersionString":"5.25.0","CFBundleVersion":"0","CFBundleIdentifier":"com.xxxx.myapp"}, "storeInfo" : {"deviceIdentifierForVendor":"D9AFB1A6-DDA6-462D-A27D-36E143C7ACF6","thirdParty":true}, "parentProc" : "launchd", "parentPid" : 1, "coalitionName" : "com.xxxx.myapp", "crashReporterKey" : "ded93d2da6d19b1e84aff2c00001f6ee1f7b0aca", "appleIntelligenceStatus" : {"state":"unavailable","reasons":["accessNotGranted","assetIsNotReady","siriAssetIsNotReady","notOptedIn","deviceNotCapable"]}, "wasUnlockedSinceBoot" : 1, "isLocked" : 0, "codeSigningID" : "com.xxxx.myapp", "codeSigningTeamID" : "8VGP475R33", "codeSigningFlags" : 570434305, "codeSigningValidationCategory" : 5, "codeSigningTrustLevel" : 4, "instructionByteStream" : {"beforePC":"5AAAACABAAAoAQAAMAEAADgBAABAAQAASAEAAGQBAAAwQYDSARAA1A==","atPC":"AwEAVH8jA9X9e7+p/QMAkcL0/pe/AwCR/XvBqP8PX9bAA1/WEC2A0g=="}, "bootSessionUUID" : "BF78EBB1-E385-4636-987E-B4388D80EBF3", "basebandVersion" : "3.20.05", "exception" : {"codes":"0x0000000000000000, 0x0000000000000000","rawCodes":[0,0],"type":"EXC_CRASH","signal":"SIGABRT"}, "termination" : {"code":4,"flags":518,"namespace":"DYLD","indicator":"Symbol missing","details":["(terminated at launch; ignore backtrace)"],"reasons":["Symbol not found: _$s10Foundation4DateV4GRDB24DatabaseValueConvertibleA2dEP08databaseE0AD0dE0VvgTW","Referenced from: /Volumes/VOLUME//myapp.app/myapp","Expected in: /Volumes/VOLUME//myapp.app/myapp"]}, "faultingThread" : 0, "threads" : [{"triggered":true,"id":2563160,"threadState":{"x":[{"value":6},{"value":4},{"value":6091179776},{"value":301},{"value":6091178752},{"value":0},{"value":6091174168},{"value":3776},{"value":32},{"value":6091178631},{"value":10},{"value":0},{"value":56},{"value":0},{"value":4439450793},{"value":6091174968},{"value":521},{"value":7593716520,"symbolLocation":420,"symbol":"__simple_bprintf"},{"value":0},{"value":0},{"value":6091178752},{"value":301},{"value":6091179776},{"value":4},{"value":6},{"value":9288},{"value":6091191552},{"value":8701512496,"symbolLocation":19168,"symbol":"dyld4::preallocator"},{"value":0}],"flavor":"ARM_THREAD_STATE64","lr":{"value":7594015840},"cpsr":{"value":2147487744},"fp":{"value":6091178704},"sp":{"value":6091178640},"esr":{"value":1442840704,"description":" Address size fault"},"pc":{"value":7593988164,"matchesCrashFrame":1},"far":{"value":0}},"frames":[{"imageOffset":442436,"symbol":"__abort_with_payload","symbolLocation":8,"imageIndex":1},{"imageOffset":470112,"symbol":"abort_with_payload_wrapper_internal","symbolLocation":104,"imageIndex":1},{"imageOffset":470164,"symbol":"abort_with_payload","symbolLocation":16,"imageIndex":1},{"imageOffset":22704,"symbol":"dyld4::halt(char const*, dyld4::StructuredError const*)","symbolLocation":300,"imageIndex":1},{"imageOffset":30132,"symbol":"dyld4::prepare(dyld4::APIs&, dyld3::MachOAnalyzer const*)","symbolLocation":4124,"imageIndex":1},{"imageOffset":198252,"symbol":"dyld4::start(dyld4::KernelArgs*, void*, void*)::$_0::operator()() const","symbolLocation":544,"imageIndex":1},{"imageOffset":195536,"symbol":"start","symbolLocation":2188,"imageIndex":1}]}], "usedImages" : [ { "source" : "P", "arch" : "arm64", "base" : 4375625728, "size" : 55197696, "uuid" : "dc349d86-392d-39fa-9cd3-daccab1db019", "path" : "/private/var/containers/Bundle/Application/E0327E15-3AA9-42CA-8BEF-99076C11C04D/myapp.app/myapp", "name" : "myapp" }, { "source" : "P", "arch" : "arm64e", "base" : 7593545728, "size" : 536896, "uuid" : "4eb7459f-e237-38ce-8240-3f3e2e1ce5ab", "path" : "/usr/lib/dyld", "name" : "dyld" }, { "size" : 0, "source" : "A", "base" : 0, "uuid" : "00000000-0000-0000-0000-000000000000" } ], "sharedCache" : { "base" : 6907789312, "size" : 4393861120, "uuid" : "16cc07dd-eea7-3049-9ee6-335fc7c37edf" }, "vmSummary" : "ReadOnly portion of Libraries: Total=259.2M resident=0K(0%) swapped_out_or_unallocated=259.2M(100%)\nWritable regions: Total=4240K written=144K(3%) resident=144K(3%) swapped_out=0K(0%) unallocated=4096K(97%)\n\n VIRTUAL REGION \nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nSTACK GUARD 16K 1 \nStack 1008K 1 \nVM_ALLOCATE 16K 1 \nVM_ALLOCATE (reserved) 672K 4 reserved VM address space (unallocated)\n__DATA 4868K 3 \n__DATA_CONST 1638K 2 \n__DATA_DIRTY 12K 1 \n__LINKEDIT 206.1M 2 \n__TEXT 53.2M 2 \n__TPRO_CONST 272K 1 \ndyld private memory 1024K 1 \nmapped file 61.3M 23 \npage table in kernel 144K 1 \n=========== ======= ======= \nTOTAL 330.0M 43 \nTOTAL, minus reserved VM space 329.3M 43 \n", "legacyInfo" : { "threadTriggered" : { } }, "logWritingSignature" : "c92c68c5c0a3817283c893ee8456b996f585f803", "trialInfo" : { "rollouts" : [ { "rolloutId" : "63f9578e238e7b23a1f3030a", "factorPackIds" : { "SMART_REPLY_ACTIONS_EN" : "64af1347f38420572631a103" }, "deploymentId" : 240000005 }, { "rolloutId" : "6761d0c9df60af01adb250fb", "factorPackIds" : { }, "deploymentId" : 240000001 } ], "experiments" : [ ] } }
1
0
666
Feb ’25
Official documentation for creating custom file templates in Xcode
Hello, Does anyone know where I can find the official Apple documentation for creating custom file templates in Xcode? For clarity, I mean the documentation for adding to the "File from Template..." wizard that's driven by .xctemplate folders in ~/Library/Developer/Xcode/Templates/ There are some blog posts about it online, and I can inspect the templates built into Xcode, but I can't seem to find the official documentation anywhere. Thanks!
1
0
193
Feb ’25
Error Simulator Download Simulator IOS 18.2 22C5142a
I can't install Simulator 18.2 I reinstalled sometimes Xcode y always return this erro Download failed. Domain: DVTDownloadableErrorDomain Code: 41 User Info: { DVTErrorCreationDateKey = "2025-02-15 15:41:39 +0000"; } Download failed. Domain: DVTDownloadableErrorDomain Code: 41 Failed fetching catalog for assetType (com.apple.MobileAsset.appleTVOSSimulatorRuntime), serverParameters ({ RequestedBuild = 22K5148a; }) Domain: DVTDownloadsUtilitiesErrorDomain Code: -1 Download failed due to a bad URL. (Catalog download for com.apple.MobileAsset.appleTVOSSimulatorRuntime) Domain: com.apple.MobileAssetError.Download Code: 49 User Info: { checkConfiguration = 1; } System Information macOS Version 15.2 (Build 24C101) Xcode 16.2 (23504) (Build 16C5023f) Timestamp: 2025-02-15T09:41:39-06:00
6
0
2.0k
Feb ’25