We are using AVFoundation to create a Barcode/Qrcode reader.In there we created a Qr/Barcode detection square area to show in the middle of the ipad/iphone screen with red color boarder and we were able to read below types Barcode/Qrcode in ios 15.4 within that detection area. Below are the barcode types that we read. private let supportedCodeTypes = [ AVMetadataObject.ObjectType.codabar, AVMetadataObject.ObjectType.qr, AVMetadataObject.ObjectType.upce, AVMetadataObject.ObjectType.code39Mod43, AVMetadataObject.ObjectType.code39, AVMetadataObject.ObjectType.code93, AVMetadataObject.ObjectType.code128, AVMetadataObject.ObjectType.ean8, AVMetadataObject.ObjectType.ean13, AVMetadataObject.ObjectType.aztec, AVMetadataObject.ObjectType.pdf417, AVMetadataObject.ObjectType.itf14, AVMetadataObject.ObjectType.dataMatrix, AVMetadataObject.ObjectType.interleaved2of5] But when we update our source to iOS 16, only "AVMetadataObject.ObjectType.codabar" type barcode cannot read inside the detection area. All other barcode can be detect and read inside detection area. if we expand detection area to full screen "AVMetadataObject.ObjectType.codabar" can be readed. So is there a specific reason for this scenario or is it a problem comes with iOS 16?

I have deployed a angular site with nginx server in GKE and set the SSL authentication. I installed the client certificate using Mobileiron Cloud MDM in my ipad. Then i was able to access and validate the certificate using Safari . But when i trying to do the same thing using my application WkWebView it always giving me the "400 Bad Request" error. After some search i realize that we cannot acces the certificates which installed in the Apple Key chain and it they can be only access by applications Safari or apple Mail app. As a solution for this problem then i set the client certifcate inside App Bundle and was able to do the authentication by importing it using "SecPKCS12Import" and do the authentication. let securityError = SecPKCS12Import(data as NSData,                       [ kSecImportExportPassphrase as String : password ] as CFDictionary,                       &_items); Now WKwebView is loading only if authentication is correct. But for this methos i need to upload the client certificate to my App Bundle. So i would like to know, is there a way to do the SSL authentication in WKWebview without bundeling the client certificate to app bundle. I would like a way that i can deploy it in a remote way like Mobileiron Cloud MDM(i already have the subscription so there is no probles accesing all Mobileriron services.) and access that certifcate to authenticate in the WKWebview url loading.

I would like to know what errors can be handled by the UIPrintInteractionController.CompletionHandler.According to the UIKit documentation, four constants were defined for UIPrintError.Code, but that is very rough and I don't know which error codes are returned at specific times. When I print from my iPad using AirPrint, can I get detailed errors such as out of ink, paper jam, or insufficient paper? Also, is there another way to get and handle print errors other than using the UIPrintInteractionController.CompletionHandler?

I'm using UIPrintInteractionController(AirPrint) to print documents in my swift application. I was able to print the documents using my application, but all of them are printing in one-sided. Now i want to add a double-sided printing as an option to my application. After some research i found that it can be implement by adding info.duplex = UIPrintInfo.Duplex.longEdge to printInfo. I tried it using the below code. private var printController = UIPrintInteractionController.shared let info = UIPrintInfo.printInfo() info.duplex = UIPrintInfo.Duplex.longEdge <<<<<< info.jobName = "XXXPrint" info.orientation = .portrait printController.printInfo = info printController.print(to: printer, completionHandler: { [self] controller, completed, error in if(error != nil){ print("successfully") }else{ print("Printing error: \(error.localizedDescription)") } } But whether i set it in the code and run my application it is printing the pages by one-sided. So if some one can guide me to double-sided printing workable solution highly appreciated!!

I want to use the AirPrint API, which is a standard OS printing function, programmatically on an iOS application to print directly to a printer by specifying single-sided printing instead of double-sided printing for the first print after the OS is initialised. 〇Verification environment ・Device: iPad 9 generation ・OS：OS16.6 ・Printer model: EPSON PX-S730 / Brother MFC-J7300CDW / Canon G5030 / EPSON PX-M791FT ※All printers used for verification support AirPrint and are capable of duplex printing. 〇Issue The duplex printing option can be specified from the program using the AirPrint API property "duplex", However, when printing is executed from the program, the specified print option "duplex printing" is not reflected in the AirPrint API. 〇Verification results Installed the developed print verification app on the device in factory default state, and executed the print process from the app to the printer. (1st time) Set the property "duplex printing" = duplex or single-sided in the AirPrint API of iOS → In both cases, printing was performed on both sides. (2nd and subsequent times) Set the property "duplex printing" = duplex or single-sided in the AirPrint API of iOS → In both cases, printing is done on one side. 〇Source Code The print verification application we developed uses the UIPrintInteractionController class in Swift to specify the printing options for duplex printing. We believe we can specify this by setting "info.duplex = UIPrintInfo.Duplex.none" in the following source code and adding it to printInfo. func buttonClick(_ sender: Any) { let printController = UIPrintInteractionController.shared let printInfo = UIPrintInfo(dictionary: nil) printInfo.jobName = "PrintJob from PrintTestApp" // color printInfo.outputType = UIPrintInfo.OutputType.general // duplex mode for the print printInfo.duplex = UIPrintInfo.Duplex.none // set the single side option printController.printInfo = printInfo // PDF printing in project folder printController.printingItem = Bundle.main.url(forResource: "sample", withExtension: "pdf")! // printer settings let printer = UIPrinter(url: URL(string: "ipps://XXXXXXX/ipp/print")!) // direct printing printController.print(to: printer, completionHandler: { controller, completed, error in guard error == nil else { return } }) }

Environment→ ・Device: iPad 9th generation ・OS：iPadOS17.1、iPadOS16.6 ・Printer model：EPSON PX-S730 What I want→ I want to determine whether the printer and iPad are connected to the same Wi-Fi network. Current issues→ When I run the below code on an iOS17 iPad, contactPrinter() becomes true even though you are not connected to the same network as the printer. Problem Description→ I want to pass the URL of the printer that I have set in advance and print directly from the device to the printer. So in iOS 16 when i execute the below code, without connecting to the same network as printer, return value of the "contactPrinter" method is FALSE. once i update to iOS 17 and ran the same code with the same conditions(iPad and printer not connected to same network), return value becomes TRUE. [I'm using "contactPrinter" method because after update to iOS 17 i was able to successfully launch a print job even if your device isn't connected to the same network as your printer.But in iOS 16 it return as an Error.] Is this a bug in iOS 17? Or is the method used incorrectly? Test code: let printer = UIPrinter(url: URL(string: "printer url")!) printer.contactPrinter { (available) -> Void in if (available) { // iOS17.1:true, iOS16.6:false print("connected to printer") printController.print(to: printer, completionHandler: printCompletionHandler) } else { print("not connected to printer") } }

Environment→ ・Device: iPad 9th generation ・OS：**iOS17.5.1 ・Printer model：EPSON PX-S730 Current issues→ An error message is not returned from the printer if a print job is sent while the printer is off. Problem Description→ The AirPrint feature on an iPad 9th generation running iOS 17.5.1 is being used with an EPSON PX-S730 printer. When sending a print job while the printer is off, the Print Center shows the ongoing printing job, but the printing cannot be executed because the printer is off. What I want→ I would like an error to be returned when I submit a printing job while the printer is off. Test code: Note: printController.print response is completed but Print Center status is printing let printInfo = UIPrintInfo(dictionary: nil) printInfo.jobName = "Print Job" printController.printInfo = printInfo let pdfURL = Bundle.main.url(forResource: "sample", withExtension: "pdf")! printController.printingItem = pdfURL let printer = UIPrinter(url: printerUrl) printController.print(to: printer, completionHandler: { [self] printController, completed, error in if(error != nil){ print("error"). }else if completed{ print("completed"). //this scenario handles completion response }else{ print("cancel") } })

Environment→ ・Device: iPad 9th generation ・OS：**iOS17.5.1 ・Printer model：EPSON PX-S730 Current issues→ 01). After canceling a print job in the Print Center, the Print Center screen on the iPad does not close. 02). When the printer is turned on and a new print job is sent, the Print Center shows the ongoing waiting job instead of proceeding with printing. Problem Description→ The AirPrint feature on an iPad 9th generation running iOS 17.5.1 is being used with an EPSON PX-S730 printer. When sending a print job while the printer is off, the Print Center shows the ongoing printing job. If the print job is canceled in the Print Center, the Print Center screen on the iPad does not close. After turning on the printer and sending the print job again, the Print Center shows the ongoing waiting job. What I want→ The Print Center screen on the iPad to close automatically after canceling a print job. Test code: Note: printController.print response is completed but Print Center status is waiting let printInfo = UIPrintInfo(dictionary: nil) printInfo.jobName = "Print Job" printController.printInfo = printInfo let pdfURL = Bundle.main.url(forResource: "sample", withExtension: "pdf")! printController.printingItem = pdfURL let printer = UIPrinter(url: printerUrl) printController.print(to: printer, completionHandler: { [self] printController, completed, error in if(error != nil){ print("error"). }else if completed{ print("completed") //this scenario handles completion response }else{ print("cancel") } })

I'm developing two native apps and one is a authentication app and other one is business app. In the main flow if buisness application is on the foreground and did nothing for at least 10 minutes it will automatically time out and redirect to the autentication app for token refresh. In this flow universal link redirect to the authetication app without opening Safari. But if i execute the below flow buissness app redirect to the Safari. Buisness App In Foregorund → Displaying a OS screen while app is in Foreground(Like Push Notification Center) → On this satate leave device for 10 minutes → Buisness app will automatically timeout and rediret to Safari(In safari 「NoSuchKey The specified key does not exist.」message is displaying but authentication app Universal link Start button is showing) → After click the Universal Link start button in Safari Authentication App open. I use the below code to start the Universal Link: if let url = URL(string: path) { UIApplication.shared.open(url) } So i would like to know is there a special reason that when Displaying a OS screen while app is in Foreground(Like Push Notification Center) affect the normal flow of Universal redirection to another app?

Environment→ ・Device: iPad 10th generation ・OS：**iOS18.3.2 I'm using AVAudioSession to record sound in my application. But I recently came to realize that when the app starts a recording session on a tablet, OS automatically sets the tablet volume to 50% and when after recording ends, it doesn't change back to the previous volume level before starting the recording. So I would like to know whether this is an OS default behavior or a bug? If it's a default behavior, I much appreciate if I can get a link to the documentation.

Environment→ ・Device: iPad 10th generation ・OS：**iOS18.3.2 We're using AVAudioPlayer to play a sound when a button is tapped. In our use case, this button can be tapped very frequently — roughly every 0.1 to 0.2 seconds. Each tap triggers the following function: var audioPlayer: AVAudioPlayer? func soundPlay(resource: String, type: String){ guard let path = Bundle.main.path(forResource: resource, ofType: type) else { return } do { audioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: path)) audioPlayer!.delegate = self try audioSession.setCategory(.playback) } catch { return } self.audioPlayer!.play() } The issue is that under high-frequency tapping (especially around 0.1–0.15s intervals), the app occasionally crashes. The crash does not occur every time, but it happens randomly — sometimes within 30 seconds, within 1 minute, or even 3 minutes of continuous tapping. Interestingly, adding a delay of 0.2 seconds between button taps seems to prevent the crash entirely. Delays shorter than 0.2 seconds (e.g.,0.15s,0.18s) still result in occasional crashes. My questions are: **Is this expected behavior from AVAudioPlayer or AVAudioSession? Could this be a known issue or a limitation in AVFoundation? Is there any documentation or guidance on handling frequent sound playback safely?** Any insights or recommendations on how to handle rapid, repeated audio playback more reliably would be appreciated.

We have a login flow where the user authenticates in Safari, and at the end of the process the authentication server redirects back to our app using a Universal Link. On most devices, the app opens automatically without any confirmation banner. However, on several iPads, Safari always shows the “Open App A?” banner after the redirect. The user must tap Open every time. Other devices running the same iOS version do not show this issue. Expected Flow (working devices): Start authentication Safari login Authentication server redirects using a Universal Link App A opens automatically Problematic Flow (several iPads): Start authentication Safari login Authentication server redirects using a Universal Link Safari shows “Open App A?” confirmation banner User must tap Open App A starts Questions: Is this a known issue in iOS? Or is this expected behavior under certain conditions (i.e., is there a specific Safari/iOS specification that causes this banner to appear)? Is there any way to prevent Safari from showing the “Open App A?” banner and allow automatic redirection? ＊This issue did not occur on iOS 16, but it started appearing after updating to iOS 17. Devices : iPad 9th Gen/iPad 10th Gen

Hello, We are experiencing a behavior change with WKWebView related to upgradeKnownHostsToHTTPS. Current application, we explicitly disable automatic HTTPS upgrades: let config = WKWebViewConfiguration() config.upgradeKnownHostsToHTTPS = false Observed behavior iOS 17.5 (built with Xcode 15.3) http:// image URLs are not automatically upgraded to https://, and the behavior works as expected. iOS 18.5 / 18.6.x (built with Xcode 16.4) http:// image URLs appear to be automatically upgraded to https:// by WebKit, even when upgradeKnownHostsToHTTPS is explicitly set to false. This behavior occurs for subresource requests such as <img src="http://..."> inside a WKWebView. Question Has the behavior of upgradeKnownHostsToHTTPS changed in iOS 18 / Xcode 16? Is this property now ignored for certain types of subresource requests (e.g. images), or overridden by new WebKit security policies such as mixed-content HTTPS upgrades? Any clarification or official guidance would be greatly appreciated!.

I have a question regarding the behavior of AVAudioSession.sharedInstance().outputVolume. Observed behavior: When the app is in the foreground, I read audioSession.outputVolume (for example, 0.1). The app is then moved to the background. While the app is in the background, the user changes the system volume using the hardware buttons (for example, to 0.5). When the app returns to the foreground, audioSession.outputVolume still reports the previous value (0.1). From my testing, outputVolume only seems to update when the system volume is changed while the app is in the foreground. Volume changes made while the app is in the background are not reflected when the app returns to the foreground. Questions: According to Apple’s documentation for AVAudioSession.outputVolume: “The systemwide output volume set by the user.” https://developer.apple.com/documentation/avfaudio/avaudiosession/outputvolume However, based on our testing on iOS 18.6.2 and iOS 18.1, the observed behavior seems to differ from this description. Questions: The documentation states that outputVolume represents the system-wide volume set by the user. In our testing, the value does not reflect volume changes made while the app is in the background and only updates when the app is in the foreground.Is this the expected behavior of AVAudioSession.outputVolume? Is there any other recommended way in Swift to retrieve the current system volume that reflects user changes made both while the app is in the foreground and while it is in the background? Any clarification on the intended behavior or recommended handling would be greatly appreciated.

Environment→ ・Device: iPad 9th generation ・OS: iOS17.0.3 ・Printer model: EPSON PX-S730 What I want→ I would like to programmatically use the AirPrint API to directly print from my application to a selected printer specifying the printing as single-side Current issues → After updating the iOS from 16.6.1 to 17 version, when printing programmatically using the AirPrint API, even setting the print options as single-side, it end up printing on double- side. Issue description→ When I run the code below on iOS16.6.1, it prints on single-side,** but after updating to iOS17.0.3, It’s always printing on double-sides.** Also, the Apple Developer Documentation says that the print method disables duplex printing and it's describe in below URL: https://developer.apple.com/documentation/uikit/uiprintinteractioncontroller/1618174-print Test code: let printInfo = UIPrintInfo(dictionary: nil) printInfo.jobName = "Print Job" printController.printInfo = printInfo let pdfURL = Bundle.main.url(forResource: "sample", withExtension: "pdf")! printController.printingItem = pdfURL let printer = UIPrinter(url: printerUrl) printController.print(to: printer, completionHandler: { [self] printController, completed, error in if(error != nil){ print("error") }else if completed{ print("completed") }else{ print("cancel") } }) Does anyone knows if it's a bug in iOS17 or am I missing something?