In our web application some functionalities will allow user to upload multiple images (More than 25 images) in a single page It is working find in all OS and browsers except iOS When user try to upload images directly from camera there will be some overlaps, duplication, missing etc. This is happening in both Safari and Chrome, we had a thorough check in our application and found every thing is working fine from our end You can reproduce the issue by creating a web page which accept more than 50 images (we tried the same in ASP MVC Core & PHP) and showing the images in order access the page through your iPhone using Safari or Chrome Try to upload images directly from your camera, try sequential images (Image of a stop watch, or some thing like that) so that you can easily identify the order of files uploaded and check the listing page of uploaded image (Try these steps multiple times) You can find some images are duplicated and some are missing

Hello Apple Developer Community, I’m facing a recurring issue in my SwiftUI iOS app where a specific view fails to reload correctly after saving edits and navigating back to it. The failure happens consistently post-save, and I’m looking for insights from the community. 🛠 App Overview Purpose A SwiftUI app that manages user-created data, including images, text fields, and completion tracking. Tech Stack: SwiftUI, Swift 5.x MSAL for authentication Azure Cosmos DB (NoSQL) for backend data Azure Blob Storage for images Environment: Xcode 15.x iOS 17 (tested on iOS 18.2 simulator and iPhone 16 Pro) User Context: Users authenticate via MSAL. Data is fetched via Azure Functions, stored in Cosmos DB, and displayed dynamically. 🚨 Issue Description 🔁 Steps to Reproduce Open a SwiftUI view (e.g., a dashboard displaying a user’s saved data). Edit an item (e.g., update a name, upload a new image, modify completion progress). Save changes via an API call (sendDataToBackend). The view navigates back, but the image URL loses its SAS token. Navigate away (e.g., back to the home screen or another tab). Return to the view. ❌ Result The view crashes, displays blank, or fails to load updated data. SwiftUI refreshes text-based data correctly, but AsyncImage does not. Printing the image URL post-save shows that the SAS token (?sv=...) is missing. ❓ Question How can I properly reload AsyncImage after saving, without losing the SAS token? 🛠 What I’ve Tried ✅ Verified JSON Structure Debugged pre- and post-save JSON. Confirmed field names match the Codable model. ✅ Forced SwiftUI to Refresh Tried .id(UUID()) on NavigationStack: NavigationStack { ProjectDashboardView() .id(UUID()) // Forces reinit } Still fails intermittently. ✅ Forced AsyncImage to Reload Tried appending a UUID() to the image URL: AsyncImage(url: URL(string: "\(imageUrl)?cacheBust=\(UUID().uuidString)")) Still fails when URL query parameters (?sv=...) are trimmed. I’d greatly appreciate any insights, code snippets, or debugging suggestions! Let me know if more logs or sample code would help. Thanks in advance!

If I want to edit image in preview app. But there is only option to rotate left and right 90degree rotations. No option to rorate in any prticular angle. So Please look into this and provide option in next update

I am extracting a JPEG2000 (JP2) facial image from an NFC passport chip (ISO/IEC 19794-5) and attempting to create a UIImage from it. On iOS 16, the following code works fine: import ImageIO import UIKit func getUIImage(from imageData: [UInt8]) -> UIImage? { let data = Data(imageData) guard let imageSource = CGImageSourceCreateWithData(data as CFData, nil), let cgImage = CGImageSourceCreateImageAtIndex(imageSource, 0, nil) else { print("Failed to decode JP2 image!") return nil } return UIImage(cgImage: cgImage) } However, on iOS 18, this fails with errors like: initialize:1415: *** invalid JPEG2000 file *** makeImagePlus:3752: *** ERROR: 'JP2 ' - failed to create image [-50] CGImageSourceCreateImageAtIndex: *** ERROR: failed to create image [-59] Questions: Did Apple remove or modify JPEG2000 support in iOS 18? Is there an official workaround for decoding JPEG2000 on iOS 18? Should I use Vision/Metal/Core Image instead? Is there a recommended way to convert JPEG2000 to JPEG/PNG before creating a UIImage? Are there any Apple-provided APIs that maintain backward compatibility for JPEG2000 decoding? Additional Info: The UInt8 array has a valid JPEG2000 header (0x00 0x00 0x00 0x0C 6A 50 ...). The image works on iOS 16 but fails on iOS 18. Tested on iPhone running iOS 18.0 beta. Any insights on how to handle JPEG2000 decoding in iOS 18 would be greatly appreciated! 🚀

In SwiftUI we have these nice properties that we can use for an Image: .saturation, .contrast, .brightness. In my case I have a backend where I would want to apply the same exact effects using OpenCV. Can I find the mathematical formulas anywhere? Any idea how can I achieve this? Thank you!

Hi, I have a problem when I want to attach my grayscale depth map image into the real image. The produced depth map doesn't have the cameraCalibration value which should responsible to align the depth data to the image. How do I align the depth map? I saw an article about it but it is not really detailed so I might be missing some process. I tried to: convert my depth map into pixel buffer create image destination ref and add the image there. add the auxData (depth map dict) This is the output: There is some black space there and my RGB image colour changes

A simple view has misaligned localized content after being converted to an image using ImageRenderer. This is still problematic on real phone and TestFlight I'm not sure what the problem is, I'm assuming it's an ImageRenderer bug. I tried to use UIGraphicsImageRenderer, but the UIGraphicsImageRenderer captures the image in an inaccurate position, and it will be offset resulting in a white border. And I don't know why in some cases it encounters circular references that result in blank images. "(1) days" is also not converted to "1 day" properly.

A specific image fails to load properly using UIImageView on iOS 16 and later systems, but loads normally on iOS 15 and earlier versions. Similarly, on Mac computers, this image cannot be opened on MacOS 13 and later, whereas it opens without issue on MacOS 12 and earlier. I am curious about the reasons behind this differing behavior on both iPhone and Mac.

基于iPhone 14 Max相机，实现模型识别，并在识别对象周围画一个矩形框。宽度和高度使用激光雷达计算，并在实时更新的图像上以厘米为单位显示。 swift code

I’m experiencing significant performance and memory management issues in my SwiftUI application when displaying a large number of images using LazyVStack within a ScrollView. The application uses Swift Data to manage and display images. Here’s the model I’m working with: @Model final class Item { var id: UUID = UUID() var timestamp: Date = Date.now var photo: Data = Data() init(photo: Data = Data(), timestamp: Date = Date.now) { self.photo = photo self.timestamp = timestamp } } extension Item: Identifiable {} The photo property is used to store images. However, when querying Item objects using Swift Data in a SwiftUI ScrollView, the app crashes if there are more than 100 images in the database. Scrolling down through the LazyVStack loads all images into memory leading to the app crashing when memory usage exceeds the device’s limits. Here’s my view: A LazyVStack inside a ScrollView displays the images. struct LazyScrollView: View { @Environment(\.modelContext) private var modelContext @State private var isShowingPhotosPicker: Bool = false @State private var selectedItems: [PhotosPickerItem] = [] @Query private var items: [Item] var body: some View { NavigationStack { ScrollView { LazyVStack { ForEach(items) { item in NavigationLink { Image(uiImage: UIImage(data: item.photo)!) .resizable() .scaledToFit() } label: { Image(uiImage: UIImage(data: item.photo)!) .resizable() .scaledToFit() } } } } .navigationTitle("LazyScrollView") .photosPicker(isPresented: $isShowingPhotosPicker, selection: $selectedItems, maxSelectionCount: 100, matching: .images) .onChange(of: selectedItems) { Task { for item in selectedItems { if let data = try await item.loadTransferable(type: Data.self) { let newItem = Item(photo: data) modelContext.insert(newItem) } } try? modelContext.save() selectedItems = [] } } } } } Based on this: How can I prevent SwiftUI from loading all the binary data (photo) into memory when the whole view is scrolled until the last item? Why does SwiftUI not free memory from the images that are not being displayed? Any insights or suggestions would be greatly appreciated. Thank you! I will put the full view code in the comments so anyone can test if needed.

Hi, I'm working with a very simple app that tries to read a coordinates card and past the data into diferent fields. The card's layout is COLUMNS from 1-10, ROWs from A-J and a two digit number for each cell. In my app, I have field for each of those cells (A1, A2...). I want that OCR to read that card and paste the info but I just cant. I have two problems. The camera won't close. It remains open until I press the button SAVE (this is not good because a user could take 3, 4, 5... pictures of the same card with, maybe, different results, and then? Which is the good one?). Then, after I press save, I can see the OCR kinda works ( the console prints all the date read) but the info is not pasted at all. Any idea? I know is hard to know what's wrong but I've tried chatgpt and all it does... just doesn't work This is the code from the scanview import SwiftUI import Vision import VisionKit struct ScanCardView: UIViewControllerRepresentable { @Binding var scannedCoordinates: [String: String] var useLettersForColumns: Bool var numberOfColumns: Int var numberOfRows: Int @Environment(.presentationMode) var presentationMode func makeUIViewController(context: Context) -> VNDocumentCameraViewController { let scannerVC = VNDocumentCameraViewController() scannerVC.delegate = context.coordinator return scannerVC } func updateUIViewController(_ uiViewController: VNDocumentCameraViewController, context: Context) {} func makeCoordinator() -> Coordinator { return Coordinator(self) } class Coordinator: NSObject, VNDocumentCameraViewControllerDelegate { let parent: ScanCardView init(_ parent: ScanCardView) { self.parent = parent } func documentCameraViewController(_ controller: VNDocumentCameraViewController, didFinishWith scan: VNDocumentCameraScan) { print("Escaneo completado, procesando imagen...") guard scan.pageCount > 0, let image = scan.imageOfPage(at: 0).cgImage else { print("No se pudo obtener la imagen del escaneo.") controller.dismiss(animated: true, completion: nil) return } recognizeText(from: image) DispatchQueue.main.async { print("Finalizando proceso OCR y cerrando la cámara.") controller.dismiss(animated: true, completion: nil) } } func documentCameraViewControllerDidCancel(_ controller: VNDocumentCameraViewController) { print("Escaneo cancelado por el usuario.") controller.dismiss(animated: true, completion: nil) } func documentCameraViewController(_ controller: VNDocumentCameraViewController, didFailWithError error: Error) { print("Error en el escaneo: \(error.localizedDescription)") controller.dismiss(animated: true, completion: nil) } private func recognizeText(from image: CGImage) { let request = VNRecognizeTextRequest { (request, error) in guard let observations = request.results as? [VNRecognizedTextObservation], error == nil else { print("Error en el reconocimiento de texto: \(String(describing: error?.localizedDescription))") DispatchQueue.main.async { self.parent.presentationMode.wrappedValue.dismiss() } return } let recognizedStrings = observations.compactMap { observation in observation.topCandidates(1).first?.string } print("Texto reconocido: \(recognizedStrings)") let filteredCoordinates = self.filterValidCoordinates(from: recognizedStrings) DispatchQueue.main.async { print("Coordenadas detectadas después de filtrar: \(filteredCoordinates)") self.parent.scannedCoordinates = filteredCoordinates } } request.recognitionLevel = .accurate let handler = VNImageRequestHandler(cgImage: image, options: [:]) DispatchQueue.global(qos: .userInitiated).async { do { try handler.perform([request]) print("OCR completado y datos procesados.") } catch { print("Error al realizar la solicitud de OCR: \(error.localizedDescription)") } } } private func filterValidCoordinates(from strings: [String]) -> [String: String] { var result: [String: String] = [:] print("Texto antes de filtrar: \(strings)") for string in strings { let trimmedString = string.replacingOccurrences(of: " ", with: "") if parent.useLettersForColumns { let pattern = "^[A-J]\\d{1,2}$" // Letras de A-J seguidas de 1 o 2 dígitos if trimmedString.range(of: pattern, options: .regularExpression) != nil { print("Coordenada válida detectada (letras): \(trimmedString)") result[trimmedString] = "Valor" // Asignación de prueba } } else { let pattern = "^[1-9]\\d{0,1}$" // Solo números, de 1 a 99 if trimmedString.range(of: pattern, options: .regularExpression) != nil { print("Coordenada válida detectada (números): \(trimmedString)") result[trimmedString] = "Valor" } } } print("Coordenadas finales después de filtrar: \(result)") return result } } }

Hey, I'm building a camera app and I want to use the captured HDRGainMap along side the photo to do some processing with a CIFilter chain. How can this be done? I can't find any documentation any where on this, only on how to access the HDRGainMap from an existing HEIC file, which I have done successfully. For this I'm doing something like the following: let gainmap = CGImageSourceCopyAuxiliaryDataInfoAtIndex(source, 0, kCGImageAuxiliaryDataTypeHDRGainMap) let gainDict = NSDictionary(dictionary: gainmap) let gainData = gainDict[kCGImageAuxiliaryDataInfoData] as? Data let gainDescription = gainDict[kCGImageAuxiliaryDataInfoDataDescription] let gainMeta = gainDict[kCGImageAuxiliaryDataInfoMetadata] However I'm not sure what the approach is with a AVCapturePhoto output from a AVCaptureDevice. Thanks!

Hi everyone, I'm working on an iOS app that uses VisionKit and I'm exploring the .visualLookUp feature. Specifically, I want to extract the detailed information that Visual Look Up provides after identifying an object in an image (e.g., if the object is a flower, retrieve its name; if it’s a clothing tag, get the tag's content).

1 CoreFoundation _dataWrite + 144 2 CoreFoundation _CFWriteStreamWrite + 312 3 ImageIO IIOColorMap::writeToStream(__CFWriteStream*) + 128 4 ImageIO GlobalGIFInfo::writeToStream(__CFWriteStream*, CFRange const&) + 336 5 ImageIO GlobalGIFInfo::createDataRepresentation(CFRange const&) + 80 6 ImageIO IIO_Reader_GIF::createGlobalInfoData(IIOImageReadSession*) + 68 7 ImageIO IIOReadPlugin::callDecodeImage(IIODecodeParameter*, IIOImageType, __IOSurface**, __CVBuffer**, CGImageBlockSet**) + 608 8 ImageIO IIO_Reader::CopyImageBlockSetProc(void*, CGImageProvider*, CGRect, CGSize, __CFDictionary const*) + 696 9 ImageIO IIOImageProviderInfo::copyImageBlockSetWithOptions(CGImageProvider*, CGRect, CGSize, __CFDictionary const*) + 740 10 ImageIO IIOImageProviderInfo::CopyImageBlockSetWithOptions(void*, CGImageProvider*, CGRect, CGSize, __CFDictionary const*) + 920 11 QuartzCore CA::Render::copy_image(CGImage*, CGColorSpace*, unsigned int, double, double) + 3080 12 QuartzCore CA::Render::prepare_image(CGImage*, CGColorSpace*, unsigned int, double) + 24 13 QuartzCore CA::Layer::prepare_contents(CALayer*, CA::Transaction*) + 220 14 QuartzCore CA::Layer::prepare_commit(CA::Transaction*) + 284 15 QuartzCore CA::Context::commit_transaction(CA::Transaction*, double, double*) + 484 16 QuartzCore CA::Transaction::commit() + 648 17 QuartzCore CA::Transaction::flush_as_runloop_observer(bool) + 88 18 UIKitCore __UIApplicationFlushCATransaction + 52 19 UIKitCore ___setupUpdateSequence_block_invoke_2 + 332 20 UIKitCore __UIUpdateSequenceRun + 84 21 UIKitCore _schedulerStepScheduledMainSection + 172 22 UIKitCore _runloopSourceCallback + 92 23 CoreFoundation ___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 24 CoreFoundation ___CFRunLoopDoSource0 + 176 25 CoreFoundation ___CFRunLoopDoSources0 + 244 26 CoreFoundation ___CFRunLoopRun + 840 27 CoreFoundation _CFRunLoopRunSpecific + 588 28 GraphicsServices 0x00000001ebf114c0 GSEventRunModal + 164 29 UIKitCore -[UIApplication _run] + 816 30 UIKitCore _UIApplicationMain + 340

Hi Team, We’re encountering an issue where Open Graph metadata (e.g., og:image) isn’t rendering properly on iOS/macOS platforms or WhatsApp previews. Here’s a brief summary of the problem: SSL Configuration: Our SSL Labs report shows a grade of B due to: Improper certificate chain setup. Outdated cipher suites (e.g., TLS_RSA_WITH_3DES). Support for deprecated TLS protocols (1.0/1.1). Frontend Observations: Metadata (e.g., og:image) is not reliably picked up on iOS/macOS crawlers. Crawlers may have issues accessing assets due to CORS or TLS limitations. What We Need: Guidance on resolving Open Graph preview issues specific to iOS/macOS environments. Best practices for ensuring compatibility with Apple’s crawlers and WhatsApp on iOS. Suggestions for optimizing server-side SSL/TLS configurations and frontend setup to improve metadata visibility. We’re currently using Next.js 14 for the frontend. Any insights or debugging tips are greatly appreciated! Thanks in advance!

I am trying to create an empty metadata, and set the HDRGainMapHeadroom at xxx. However the final returned mutableMetadata doesn't contain the HDRGainMap:HDRGainMapVersion or HDRGainMap:HDRGainMapHeadroom. But iio:hasXMP exist. why? Is that the reason that the namespace HDRGainMap is private? func createHDRGainMapMetadata(version: Int, headroom: Double) -> CGImageMetadata? { // Create a mutable metadata object let mutableMetadata = CGImageMetadataCreateMutable() // Define the namespace for HDRGainMap let namespace = "HDRGainMap" let xmpKeyPath = "iio:hasXMP" let xmpValue = String(true) // Set the HDRGainMapVersion item let versionKeyPath = "\(namespace):HDRGainMapVersion" let versionValue = String(version) // Set the version value let xmpSetResult = CGImageMetadataSetValueWithPath(mutableMetadata, nil, xmpKeyPath as CFString, xmpValue as CFString) if xmpSetResult == false { print("Failed to set xmp") } // Set the version value let versionSetResult = CGImageMetadataSetValueWithPath(mutableMetadata, nil, versionKeyPath as CFString, versionValue as CFString) if versionSetResult == false { print("Failed to set HDRGainMapVersion") } // Set the HDRGainMapHeadroom item let headroomKeyPath = "\(namespace):HDRGainMapHeadroom" let headroomValue = String(headroom) // Set the headroom value let headroomSetResult = CGImageMetadataSetValueWithPath(mutableMetadata, nil, headroomKeyPath as CFString, headroomValue as CFString) if headroomSetResult == false { print("Failed to set HDRGainMapHeadroom") } return mutableMetadata }

Hi, i’m doing a work. i need to transfer files (photo, raw format) from sd to iphone. On my iPad pro. i need to move photo first on file, then Import to photo. now. If i do this job for few files there is no problem. if i copy more then 300 files job is not done. when i select raw file on file app, and then click on share/ save to my photo option …. Ther‘s no progress bar, no way to conclude copy with success. At least 298 photo are imported. Whitout any error or warning. Someone do the trick? can be possible to copy from file to file or import from file to photo with a progress bar display? it’s very very strange that the basic is turned off. please help me. thank you very much in advance.

I'm trying to make an app that is able to quietly run in the background. It needs to detect other apps' or the system's incoming video and/or audio, using only on-device resources to determine if it might be a scam caller. It will tap into an escalating cascade of resources to do so. For video/image scam detection, it uses OpenCV to detect faces, then refers to a known database of reported scam imagery. For audio scam calls, we defer to known techniques of voice modulation in frequency and/or amplitude. Each video and/or audio result will be relayed via notification banner as well as recorded in-app. Crucially, if the results are uncertain, users have the option to submit it to a global collaborative cloud database for investigative teams; 60 second audio snippets or series of images where faces were detected (60 second equivalent). In the end, we expect to deploy this app across most parts of Asia and Africa, thereby protecting generations of iPhone and iPad users. However, we have not been able to find a method that does this, and there is no known correspondance able to provide such technical guidance. Please assist.

There seems to be an issue in iOS 18 / macOS 15 related to image thumbnail generation and/or HEIC. We are transcoding JPEG images to HEIC when they are loaded into our app (HEIC has a much lower memory footprint when loaded by Core Image, for some reason). We use Image I/O for that: guard let source = CGImageSourceCreateWithURL(inputURL, nil), let destination = CGImageDestinationCreateWithURL(outputURL, UTType.heic.identifier as CFString, 1, nil) else { throw <error> } let primaryImageIndex = CGImageSourceGetPrimaryImageIndex(source) CGImageDestinationAddImageFromSource(destination, source, primaryImageIndex, nil) When we use CGImageDestinationAddImageFromSource, we get the following warnings on the console: createImage:1445: *** ERROR: bad image size (0 x 0) rb: 0 CGImageSourceCreateThumbnailAtIndex:5195: *** ERROR: CGImageSourceCreateThumbnailAtIndex[0] - 'HJPG' - failed to create thumbnail [-67] {alw:-1, abs: 1 tra:-1 max:4620} writeImageAtIndex:1025: ⭕️ ERROR: '<app>' is trying to save an opaque image (4620x3466) with 'AlphaPremulLast'. This would unnecessarily increase the file size and will double (!!!) the required memory when decoding the image --> ignoring alpha. It seems that CGImageDestinationAddImageFromSource is trying to extract/create a thumbnail, which fails somehow. I re-wrote the last part like this: guard let primaryImage = CGImageSourceCreateImageAtIndex(source, primaryImageIndex, nil), let properties = CGImageSourceCopyPropertiesAtIndex(source, primaryImageIndex, nil) else { throw <error> } CGImageDestinationAddImage(destination, primaryImage, properties) This doesn't cause any warnings. An issue that might be related has been reported here. I've also heard from others having issues with CGImageSourceCreateThumbnailAtIndex.

I have a custom app running on a Mac Studio with Ventura that grabs a snapshot image from a network camera. It then adds some extra information into the EXIF "MakerNote" field. However the metadata cannot be read back out of the image when running Ventrua, it can however be read out of the same image file on a Mac that is not running Ventura. It would appear Apple has removed support for reading MakerNote in Ventura but still supports writing MakerNote in Ventura. This code is about 7 years old and written in ObjC and has worked with no issue until Ventura came along. Calls used CGImageDestinationAddImageFromSource(); // used to write the image to disk with the extra metadata - Works on Ventura CGImageSourceCopyPropertiesAtIndex(); // used to read the meta data from an image - does not return "MakeNote" data Is there a new way to read EXIF "MakeNote" data from image files that was introduced with Ventura?