Is there a swift6 manual that will teach me how to code in swift?

A functioning Multiplatform app, which includes use of Continuity Camera on an M1MacMini running Sequoia 15.5, works correctly capturing photos with AVCapturePhoto. However, that app (and a test app just for Continuity Camera) crashes at delegate callback when run on a 2017 MacBookPro under MacOS 13.7.5. The app was created with Xcode 16 (various releases) and using Swift 6 (but tried with 5). Compiling and running the test app with Xcode 15.2 on the 13.7.5 machine also crashes at delegate callback. The iPhone 15 Continuity Camera gets detected and set up correctly, and preview video works correctly. It's when the CapturePhoto code is run that the crash occurs. The relevant capture code is: func capturePhoto() { let captureSettings = AVCapturePhotoSettings() captureSettings.flashMode = .auto photoOutput.maxPhotoQualityPrioritization = .quality photoOutput.capturePhoto(with: captureSettings, delegate: PhotoDelegate.shared) print("**** CameraManager: capturePhoto") } and the delegate callbacks are: class PhotoDelegate: NSObject, AVCapturePhotoCaptureDelegate { nonisolated(unsafe) static let shared = PhotoDelegate() // MARK: - Delegate callbacks func photoOutput( _ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: (any Error)? ) { print("**** CameraManager: didFinishProcessingPhoto") guard let pData = photo.fileDataRepresentation() else { print("**** photoOutput is empty") return } print("**** photoOutput data is \(pData.count) bytes") } func photoOutput( _ output: AVCapturePhotoOutput, willBeginCaptureFor resolvedSettings: AVCaptureResolvedPhotoSettings ) { print("**** CameraManager: willBeginCaptureFor") } func photoOutput(_ output: AVCapturePhotoOutput, willCapturePhotoFor resolvedSettings: AVCaptureResolvedPhotoSettings) { print("**** CameraManager: willCaptureCapturePhotoFor") } } The crash report significant parts are..... Crashed Thread: 3 Dispatch queue: com.apple.cmio.CMIOExtensionProviderHostContext Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000 Exception Codes: 0x0000000000000001, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 11 Segmentation fault: 11 Terminating Process: exc handler [30850] VM Region Info: 0 is not in any region. Bytes before following region: 4296495104 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 100175000-10017f000 [ 40K] r-x/r-x SM=COW ...tinuityCamera Thread 0:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x7ff803aed552 mach_msg2_trap + 10 1 libsystem_kernel.dylib 0x7ff803afb6cd mach_msg2_internal + 78 2 libsystem_kernel.dylib 0x7ff803af4584 mach_msg_overwrite + 692 3 libsystem_kernel.dylib 0x7ff803aed83a mach_msg + 19 4 CoreFoundation 0x7ff803c07f8f __CFRunLoopServiceMachPort + 145 5 CoreFoundation 0x7ff803c06a10 __CFRunLoopRun + 1365 6 CoreFoundation 0x7ff803c05e51 CFRunLoopRunSpecific + 560 7 HIToolbox 0x7ff80d694f3d RunCurrentEventLoopInMode + 292 8 HIToolbox 0x7ff80d694d4e ReceiveNextEventCommon + 657 9 HIToolbox 0x7ff80d694aa8 _BlockUntilNextEventMatchingListInModeWithFilter + 64 10 AppKit 0x7ff806ca59d8 _DPSNextEvent + 858 11 AppKit 0x7ff806ca4882 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1214 12 AppKit 0x7ff806c96ef7 -[NSApplication run] + 586 13 AppKit 0x7ff806c6b111 NSApplicationMain + 817 14 SwiftUI 0x7ff90e03a9fb 0x7ff90dfb4000 + 551419 15 SwiftUI 0x7ff90f0778b4 0x7ff90dfb4000 + 17578164 16 SwiftUI 0x7ff90e9906cf 0x7ff90dfb4000 + 10340047 17 ContinuityCamera 0x10017b49e 0x100175000 + 25758 18 dyld 0x7ff8037d1418 start + 1896 Thread 1: 0 libsystem_pthread.dylib 0x7ff803b27bb0 start_wqthread + 0 Thread 2: 0 libsystem_pthread.dylib 0x7ff803b27bb0 start_wqthread + 0 Thread 3 Crashed:: Dispatch queue: com.apple.cmio.CMIOExtensionProviderHostContext 0 ??? 0x0 ??? 1 AVFCapture 0x7ff82045996c StreamAsyncStillCaptureCallback + 61 2 CoreMediaIO 0x7ff813a4358f __94-[CMIOExtensionProviderHostContext captureAsyncStillImageWithStreamID:uniqueID:options:reply:]_block_invoke + 498 3 libxpc.dylib 0x7ff803875b33 _xpc_connection_reply_callout + 36 4 libxpc.dylib 0x7ff803875ab2 _xpc_connection_call_reply_async + 69 5 libdispatch.dylib 0x7ff80398b099 _dispatch_client_callout3 + 8 6 libdispatch.dylib 0x7ff8039a6795 _dispatch_mach_msg_async_reply_invoke + 387 7 libdispatch.dylib 0x7ff803991088 _dispatch_lane_serial_drain + 393 8 libdispatch.dylib 0x7ff803991d6c _dispatch_lane_invoke + 417 9 libdispatch.dylib 0x7ff80399c3fc _dispatch_workloop_worker_thread + 765 10 libsystem_pthread.dylib 0x7ff803b28c55 _pthread_wqthread + 327 11 libsystem_pthread.dylib 0x7ff803b27bbf start_wqthread + 15 Of course, the MacBookPro is an old device - but Continuity Camera works with the installed Photo Booth app, so it's possible. Any thoughts on solving this situation would be appreciated. Regards, Michaela

I'm trying to switch to UIKit's document lifecycle due to serious bugs with SwiftUI's version. However I'm noticing the template project from Xcode isn't compatible with Swift 6 (I already migrated my app to Swift 6.). To reproduce: File -> New -> Project Select "Document App" under iOS Set "Interface: UIKit" In Build Settings, change Swift Language Version to Swift 6 Run app Tap "Create Document" Observe: crash in _dispatch_assert_queue_fail Does anyone know of a work around other than downgrading to Swift 5?

We have successfully obtained the permissions for "Main Camera access" and "Passthrough in screen capture" from Apple. Currently, the video streams we have received are from the physical world and do not include the digital world. How can we obtain video streams from both the physical and digital worlds? thank you!

I have an iOS app where I'm trying to paste something previously copied to the user's UIPasteboard. I came across the UIPasteControl as an option for a user to tap to silently paste without having the prompt "Allow Paste" pop up. For some reason, despite having what seemingly is the correct configurations for the UIPasteControl, on testing a tap, nothing is called. I expected override func paste(itemProviders: [NSItemProvider]) to fire, but it does not. Any help would be appreciated as there doesn't seem to be much info anywhere regarding UIPasteControl. import UniformTypeIdentifiers class ViewController: UIViewController { private let pasteControl = UIPasteControl() override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .systemBackground pasteControl.target = self pasteConfiguration = UIPasteConfiguration(acceptableTypeIdentifiers: [ UTType.text.identifier, UTType.url.identifier, UTType.plainText.identifier ]) view.addSubview(pasteControl) pasteControl.translatesAutoresizingMaskIntoConstraints = false NSLayoutConstraint.activate([ pasteControl.centerXAnchor.constraint(equalTo: view.centerXAnchor), pasteControl.centerYAnchor.constraint(equalTo: view.centerYAnchor), ]) } } extension ViewController { override func paste(itemProviders: [NSItemProvider]) { for provider in itemProviders { if provider.hasItemConformingToTypeIdentifier(UTType.url.identifier) { provider.loadObject(ofClass: URL.self) { [weak self] reading, _ in guard let url = reading as? URL else { return } print(url) } } else if provider.hasItemConformingToTypeIdentifier(UTType.plainText.identifier) { provider.loadObject(ofClass: NSString.self) { [weak self] reading, _ in guard let nsstr = reading as? NSString else { return } let str = nsstr as String if let url = URL(string: str) { print(url) } } } } } }

When creating a folder in the code, it prompts that the file creation is successful, but when the folder does not exist in the "Download Container" file, do you have any permissions when creating the folder in VisionOS? static func getFileManager() -> URL { let documentsDirectory = FileManager.default.urls( for: .documentDirectory, in: .userDomainMask ).first! return documentsDirectory.appendingPathComponent("SGKJ_LIBRARY") } static func createFileLibrary() { let folderUrl = getFileManager() let fileManager = FileManager.default do { try fileManager.createDirectory( at: folderUrl, withIntermediateDirectories: true, attributes: nil ) print("Folder created successfully: \(folderUrl.path)") } catch { print("Failed to create folder: \(error.localizedDescription)") } }

I have an iOS app. When I install pods via CLI to my project for the first time, launch Xcode, and then run the app, everything works fine – no build errors. But after several instances of running the project on my device, all of a sudden build errors appear like: /Pods/FirebaseCrashlytics/Crashlytics/Crashlytics/Settings/Models/FIRCLSApplicationIdentifierModel.m:19:9 'Crashlytics/Shared/FIRCLSByteUtility.h' file not found /Pods/PostHog/vendor/libwebp/ph_sharpyuv_csp.h /Pods/PostHog/vendor/libwebp/ph_sharpyuv_csp.h: No such file or directory And I have no idea why if it's because of my PodFile or any Build Settings/Phases/Rules, but this keeps happening repeatedly and it's impossible to develop anything with this. I've tried a string of commands such as "pod deintegrate", "pod cache clean --all", removing PodFile.lock and doing pod install again, removing derived data, and cleaning build folder. I still keep running into the same build error and it's always after a few builds this happens, nothing is missing prior when the project successfully builds. Here is my PodFile for reference: # Uncomment the next line to define a global platform for your project platform :ios, '17.0' def google_utilities pod 'GoogleUtilities/AppDelegateSwizzler' pod 'GoogleUtilities/Environment' pod 'GoogleUtilities/ISASwizzler' pod 'GoogleUtilities/Logger' pod 'GoogleUtilities/MethodSwizzler' pod 'GoogleUtilities/NSData+zlib' pod 'GoogleUtilities/Network' pod 'GoogleUtilities/Reachability' pod 'GoogleUtilities/UserDefaults' end target 'SE' do # Comment the next line if you don't want to use dynamic frameworks use_frameworks! # Pods for SE pod 'Firebase/Core' pod 'Firebase/Firestore' pod 'Firebase/Auth' google_utilities end target 'NSE' do # Comment the next line if you don't want to use dynamic frameworks use_frameworks! # Pods for NSE pod 'Firebase/Messaging' google_utilities end target 'targetApp' do # Comment the next line if you don't want to use dynamic frameworks use_frameworks! #Pods for targetApp pod 'Firebase/Core' pod 'Firebase/Crashlytics' pod 'Firebase/Messaging' pod 'Firebase/Firestore' pod 'Firebase/Storage' pod 'Firebase/Functions' pod 'PromiseKit', '~> 6.0' pod 'lottie-ios' pod 'GooglePlaces' pod 'JWTDecode', '~> 2.4' pod 'PostHog' pod 'Kingfisher', '~> 8.0' pod 'PhoneNumberKit' google_utilities end post_install do |installer| installer.aggregate_targets.each do |target| target.xcconfigs.each do |variant, xcconfig| xcconfig_path = target.client_root + target.xcconfig_relative_path(variant) IO.write(xcconfig_path, IO.read(xcconfig_path).gsub("DT_TOOLCHAIN_DIR", "TOOLCHAIN_DIR")) end end installer.pods_project.targets.each do |target| target.build_configurations.each do |config| if config.base_configuration_reference.is_a? Xcodeproj::Project::Object::PBXFileReference xcconfig_path = config.base_configuration_reference.real_path IO.write(xcconfig_path, IO.read(xcconfig_path).gsub("DT_TOOLCHAIN_DIR", "TOOLCHAIN_DIR")) config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '17.0' end end end installer.pods_project.targets.each do |target| if target.name == 'BoringSSL-GRPC' target.source_build_phase.files.each do |file| if file.settings && file.settings['COMPILER_FLAGS'] flags = file.settings['COMPILER_FLAGS'].split flags.reject! { |flag| flag == '-GCC_WARN_INHIBIT_ALL_WARNINGS' } file.settings['COMPILER_FLAGS'] = flags.join(' ') end end end end end And here is my only "Run Script" in Build Phases: "${PODS_ROOT}/FirebaseCrashlytics/upload-symbols" \ -gsp "${PROJECT_DIR}/targetApp/GoogleService-Info.plist" \ -p ios \ "${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}"

I've got an iOS app with lots of extensions, some of them complex and doing a lot of stuff. After a bug I'd like to be able to use OSLogStore to get a holistic picture of logging for the app and its extensions and send that to a debugging server to retrospectively view logs for the app and its extensions. The constructor is OSLogStore.init(scope: OSLogStore.Scope), however scope only has one value .currentProcessIdentifier. Implying if that is called from within the app it can only get access to logging for its process only. I tried it out to confirm this is the case - if I log something in an extension (using Logger), then run the app with code like this:  let logStore = try! OSLogStore(scope: .currentProcessIdentifier)  let oneHourAgo = logStore.position(date: Date().addingTimeInterval(-3600)) let allEntries = try! logStore.getEntries(at: oneHourAgo)       for entry in allEntries { look at the content of the entry Then none of the entries are from the extension. Is there anyway from within the app I can access logging made within an extension?

Hi Everyone, I’m currently working on a flow where a web page redirects to our app to perform certain actions, and then returns the user back to the browser. However, on iOS, the only way to go back to the browser is by using the openURL method. The issue is that this method can only open the browser app itself—it can’t control which tab or page is shown, so the user doesn’t return to the original tab they came from. The same limitation also applies to Android. Furthermore, iOS doesn’t allow an app to programmatically return to the previous app (in this case, the browser). While Android doesn’t have an official way either, in some cases, the OS automatically returns to the previous app when ours is closed. I’d like to ask: Is there any known method or workaround that allows returning from my app back to Safari (or the default browser) and restoring the previously active web page or tab? Or, is there any way to programmatically return to the previous app from within my app? Thanks in advance for your support!

Hi, I have the following code, which for some reason is not working as expected. I have an .onAppear and a .task function that isn't running, which I can see isn't running because nothing is printing. Any guidance would be greatly appreciated. Thank you. struct ContentView: View { var body: some View { ZStack { switch view { case .view1: View1() case .view2: View2() case .view3: View3() case .view4: View4() case .view5: View5() default: SubscriptionStoreView(groupID: "") } } .onAppear() { view = .view6 print("test 1") } .task { print("test") await refreshPurchasedProducts() } } func refreshPurchasedProducts() async { // Iterate through the user's purchased products. for await verificationResult in Transaction.currentEntitlements { switch verificationResult { case .verified(let transaction): print("verified") case .unverified(let unverifiedTransaction, let verificationError): print("unverified") default: print("default") } } } }

I'm currently adding swift widgets to my existing ObjC project and building it for ios-simulator causes a "Swift.h" file not found error. it works without issue for device build. I see the file compiled under DerivedData at and set the Header Search Path and User Header Search Path to: $(CONFIGURATION_TEMP_DIR)/$(PROJECT_NAME).build/DerivedSources but it still doesn't work. Removing the #import "proj-Swift.h" line fixes the issues, but I need to import it to use WidgetCenter ReloadAllTimelines. I checked that the file is being generated correctly by viewing the autogenerated file and its contents. Any advice and direction would be a great help. Been stuck on this all week and I can't think of a different solution.

I need your help, my pass is window 11, Lenovo laptop and I have 6gb and 512gb storage and I have to run export on us through virtual machine because I have pass membership to run display on I can use it in a window 11 laptop.... thank you 🙏🏻 Yours faithfully Akansha

Hi, I am currently developing a document-based application for macOS and have encountered a challenge related to document container management. Specifically, I need to open a windowGroup that shares the same container as the one used in the DocumentGroup. However, my current approach of using a global shared model container has led to unintended behavior: any new document created is linked to existing ones, and changes made in one document are reflected across all documents. To address this issue, I am looking for a solution that allows each newly created document to be individualized while still sharing the document container with all relevant WindowGroups that require access to the data it holds. I would greatly appreciate any insights or recommendations you might have on how to achieve this. Thank you for your time and assistance. Best regards, Something like: @main struct Todo: App { var body: some Scene { DocumentGroup(editing: Item.self, contentType: .item) { ContentView() } WindowGroup { UndockView() .modelContainer(of documentGroup above) } } }

Apple Pay processed a transaction but the account has insufficient funds. Later the transaction is declined. Is it expected from Apple Pay? Does Apple Pay throws an error if the account has insufficent funds- iOS Swift ? Does anyone know the code to handle this scenario in Swift iOS?

Hey there! I faced issue in iOS 18 and newer when Spotlight search doesn't show my App in results. In older versions it works. Here is my code: func configureUserActivitity(with id: String, keywords: [String]) { let activity = NSUserActivity(activityType: id) activity.contentAttributeSet = self.defaultAttributeSet activity.isEligibleForSearch = true activity.keywords = Set(keywords) activity.becomeCurrent() self.userActivity = activity } I didn't find any reasons why it doesn't work now. Maybe I should report a bug?

I’ve been working on a personal iOS project for fun — essentially a YouTube music player, learning how background media playback works in native iOS apps. After seeing that Musi (a famous music streaming app) can play YouTube audio in the background with the screen off — I got really curious. I’ve been trying to replicate that basic background audio functionality for YouTube embeds using WKWebView. I've spent a crazy amount of time (probably 20 hours) trying to figure this out but have achieved no success. Here’s what I’ve tried so far: -Embedding a YouTube video in a WKWebView -Activating AVAudioSession with .playback and setting .setActive(true) -Adding the UIBackgroundModes key with audio in Info.plist -Adding the NSAppTransportSecurity key to allow arbitrary loads --Testing on a real device (iPhone 14, iOS 18.1 target)-- What happens: Audio plays fine in the foreground. If I exit the app and go to the lock screen quickly enough (less than 3 seconds) after pressing play, I can resume playback briefly from the lock screen — but it doesn’t automatically continue like in Musi and other apps like it. Most of the time, the audio stops when the app is backgrounded. I get this error consistently in the logs: Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" It seems like the app lacks some specific entitlements related to WebKit media playback. I don’t have AppDelegate/SceneDelegate (using SwiftUI), but can add if needed. I’m super curious how music streaming apps using youtube as a source get around this — are they doing something different under the hood? A custom player? A SafariViewController trick? Is there a specific way to configure WKWebView to keep playing in the background, or is this a known limitation? Would really appreciate any insight from folks who’ve explored this before or know how apps like Musi pulled it off. Thanks in advance!

Howdy, WKWebView feature request: allow Fullscreen API without User Gestures similar to ElectronJS' userGesture: true flag that allows devs to bypass user gesture restriction for Fullscreen API and similar executeJavaScript(code[, userGesture]) https://www.electronjs.org/docs/latest/api/web-contents#contentsexecutejavascriptcode-usergesture afaik this is allowed because of a fairly recent update to Chromium that also allows users to give Fullscreen API permissions per domain https://chromeos.dev/en/posts/using-the-fullscreen-api-without-gestures Would be greatly useful for a use case in my cross-platform app, so I can avoid rewriting all platforms to use Chromium Thanks

I use swiftui to build apps on iPhone and iPad. There is no problem with the iPhone app. The game display is fully shown on iPhone. However, for the iPad, the game display is not shown and the screen goes black. I had to tap the button on the upper left side.(looks like a side view button) After that, the game display is only shown in the left side in a very small size. How can I make the game display fully shown in the iPad?

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!

I am experiencing memory leaks in my iOS app that seem to be related to an issue between UIInputView and _UIInputViewContent. After using the memory graph, I'm seeing that instances of these objects aren't being deallocated properly. The UIInputViewController whichs holds the inputView is being deallocated properly along with its subviews.I have tried to remove all of UIInputViewController's subviews and their functions but the uiInputView is not being deallocated. The current setup of my app is a collectionView with multiple cell,each possessing a textfield with holds a UIInputViewController.When i scroll up or down,the views are being reused as expected and the number of UIInputViewController stays consistent with the number of textfields.However the number of inputView keeps increasing referencing solely _UIInputViewContent. class KeyboardViewController: UIInputViewController { // Callbacks var key1: ((String) -> Void)? var key2: (() -> Void)? var key3: (() -> Void)? var key4: (() -> Void)? private lazy var buttonTitles = [ ["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"] ] override func viewDidLoad() { super.viewDidLoad() setupKeyboard() } lazy var mainStackView: UIStackView = { let mainStackView = UIStackView() mainStackView.axis = .vertical mainStackView.distribution = .fillEqually mainStackView.spacing = 16 mainStackView.translatesAutoresizingMaskIntoConstraints = false return mainStackView }() private func setupKeyboard() { let keyboardView = UIView(frame:CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 279.0)) keyboardView.addSubview(mainStackView) NSLayoutConstraint.activate([ mainStackView.topAnchor.constraint(equalTo: keyboardView.topAnchor, constant: 16), mainStackView.leadingAnchor.constraint(equalTo: keyboardView.leadingAnchor, constant: 0), mainStackView.trailingAnchor.constraint(equalTo: keyboardView.trailingAnchor, constant: -24), mainStackView.bottomAnchor.constraint(equalTo: keyboardView.bottomAnchor, constant: -35) ]) // Create rows for (_, _) in buttonTitles.enumerated() { let rowStackView = UIStackView() rowStackView.axis = .horizontal rowStackView.distribution = .fillEqually rowStackView.spacing = 1 // Create buttons for each row for title in rowTitles { let button = createButton(title: title) rowStackView.addArrangedSubview(button) } mainStackView.addArrangedSubview(rowStackView) } self.view = keyboardView } private func createButton(title: String) -> UIButton { switch title { ///returns a uibutton based on title } } // MARK: - Button Actions @objc private func numberTapped(_ sender: UIButton) { if let number = sender.title(for: .normal) { key1?(number) } } @objc private func key2Called() { key2?() } @objc private func key3Called() { key3?() } @objc private func key4Called() { key4?() } deinit { // Clear any strong references key1 = nil key2 = nil key3 = nil key4 = nil for subview in mainStackView.arrangedSubviews { if let stackView = subview as? UIStackView { for button in stackView.arrangedSubviews { (button as? UIButton)?.removeTarget(self, action: nil, for: .allEvents) } } } mainStackView.removeFromSuperview() } } Environment iOS 16.3 Xcode 18.3.1 Any insights would be greatly appreciated as this is causing noticeable memory growth in my app over time.