iOS is the operating system for iPhone.

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MultiPeer Connectivity: Device discovery succeeds but handshake fails when off-network
Hi, I am building an app that depends on multiple iOS devices connecting to a designated "coordinator" iOS device. I am using MPC, and it works great when the devices are connected to the same WiFi AP, with virtually 100% connection success. My definition of success is a near instant detection of available devices, >95% connection success rate, and a stable ongoing connection with no unexpected disconnects. The issue arises when the devices are not connected to the same WiFi network (or connected to no network with WiFi and bluetooth still on). Devices detect each other immediately, but when initiating a connection, both devices initiate a handshake, but the connection is not successful. In the few times where the connection succeeds, the connection quality is high, stable, and doesn't drop. Is this a known limitation of the framework? Could I be doing something wrong in my implementation?
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CallKit does not activate audio session with higher probability after upgrading to iOS 18.4.1
Hi, We've noticed that this issue occurs more frequently after upgrading to iOS 18.4.1 and can result in one-way audio. Our app uses CallKit with WebRTC to establish VoIP connections. However, on iOS 18.4.1, CallKit no longer triggers: func provider(_ provider: CXProvider, didActivate audioSession: AVAudioSession) We're currently comparing the occurrence rate across different iOS versions to better understand the impact. Could you please help analyze the root cause of this issue?
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isEligibleForAgeFeatures: wrong minimum OS version
Dear Apple, while implementing Declared Age Range API in my app, I've noticed a mistake in documentation: the isEligibleForAgeFeatures property is marked 26.0+ in documentation, but 26.2+ in Xcode, which ultimately leads to inability to use it with OS below 26.2. Moreover, I'm thoroughly confused by this quote from documentation: This flag returns true on iOS and iPadOS based on a person’s eligibility and always returns false on macOS. It leads me to two questions: Is it possible to use Declared Age Range API for macOS apps? Will it be possible to use it in future? Will there be any changes regarding this matter in a meantime (especially after Jan 1st)? If yes - when should we expect these changes? If no - why this API declares macOS 26+ support alongside iOS/iPadOS, if it simply doesn't work for macOS now? As of now, my iOS app works flawlessly with given API (on iOS 26.2) while macOS app returns isEligibleForAgeFeatures = false and requestAgeRange request always throws AgeRangeService.Error.notAvailable. Also, does it mean that one should not use isEligibleForAgeFeatures boolean while implementing Declared Age Range API for apps below iOS 26.2 (I mean 26.0+)? Or implementing given API for iOS 26.2+ is a sufficient way to go? So shouldn't the whole API be marked as 26.2+? The minimum iOS version in my app is 16.0 and minimum macOS version is 13.0 anyway, so the significant part of users is left out of these updates, but the main goal here is legal compliance.
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URLRequest(url:cachePolicy:timeoutInterval:) started to crash in iOS 26
For a long time our app had this creation of a URLRequest: var urlRequest = URLRequest(url: url, cachePolicy: .reloadIgnoringLocalAndRemoteCacheData, timeoutInterval: timeout) But since iOS 26 was released we started to get crashes in this call. It is created on a background thread. Thread 10 Crashed: 0 libsystem_malloc.dylib 0x00000001920e309c _xzm_xzone_malloc_freelist_outlined + 864 (xzone_malloc.c:1869) 1 libswiftCore.dylib 0x0000000184030360 swift::swift_slowAllocTyped(unsigned long, unsigned long, unsigned long long) + 56 (Heap.cpp:110) 2 libswiftCore.dylib 0x0000000184030754 swift_allocObject + 136 (HeapObject.cpp:245) 3 Foundation 0x00000001845dab9c specialized _ArrayBuffer._consumeAndCreateNew(bufferIsUnique:minimumCapacity:growForAppend:) + 120 4 Foundation 0x00000001845daa58 specialized static _SwiftURL._makeCFURL(from:baseURL:) + 2288 (URL_Swift.swift:1192) 5 Foundation 0x00000001845da118 closure #1 in _SwiftURL._nsurl.getter + 112 (URL_Swift.swift:64) 6 Foundation 0x00000001845da160 partial apply for closure #1 in _SwiftURL._nsurl.getter + 20 (<compiler-generated>:0) 7 Foundation 0x00000001845da0a0 closure #1 in _SwiftURL._nsurl.getterpartial apply + 16 8 Foundation 0x00000001845d9a6c protocol witness for _URLProtocol.bridgeToNSURL() in conformance _SwiftURL + 196 (<compiler-generated>:974) 9 Foundation 0x000000018470f31c URLRequest.init(url:cachePolicy:timeoutInterval:) + 92 (URLRequest.swift:44)# Live For Studio Any idea if this crash is caused by our code or if it is a known problem in iOS 26? I have attached one of the crash reports from Xcode: 2025-10-08_10-13-45.1128_+0200-8acf1536892bf0576f963e1534419cd29e6e10b8.crash
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BGContinuedProcessingTask register block not called, submit does not throw an error
I implemented BGContinuedProcessingTask in my app and it seems to be working well for everyone except one user (so far) who has reached out to report nothing happens when they tap the Start Processing button. They have an iPhone 12 Pro Max running iOS 26.1. Restarting iPhone does not fix it. When they turn off the background processing feature in the app, it works. In that case my code directly calls the function to start processing instead of waiting for it to be invoked in the register block (or submit catch block). Is this a bug that's possible to occur, maybe device specific? Or have I done something wrong in the implementation? func startProcessingTapped(_ sender: UIButton) { if isBackgroundProcessingEnabled { startBackgroundContinuedProcessing() } else { startProcessing(backgroundTask: nil) } } func startBackgroundContinuedProcessing() { BGTaskScheduler.shared.register(forTaskWithIdentifier: taskIdentifier, using: .main) { @Sendable [weak self] task in guard self != nil else { return } startProcessing(backgroundTask: task as? BGContinuedProcessingTask) } let request = BGContinuedProcessingTaskRequest(identifier: taskIdentifier, title: title, subtitle: subtitle) request.strategy = .fail if BGTaskScheduler.supportedResources.contains(.gpu) { request.requiredResources = .gpu } do { try BGTaskScheduler.shared.submit(request) } catch { startProcessing(backgroundTask: nil) } } func startProcessing(backgroundTask: BGContinuedProcessingTask?) { // FIXME: Never called for this user when isBackgroundProcessingEnabled is true }
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iPhone 17 Pro Max Cannot install iOS 26 Developer Beta Updates OTA or IPSW
I’m a registered iOS developer, and I’ve been facing an issue with installing iOS developer updates for the past couple of years. I can download the updates, but they get stuck at 99.9% complete and don’t finish. I’ve tried following the instructions to force restart the phone, but it stays on the Apple logo screen until it dies. I’m able to update official iOS updates, but not the beta ones. To update, I have to put the phone in DFU mode and install the update that way. This is frustrating and causes issues with making timely updates to my app and diagnosing new issues during testing. I’d like to request that Apple look into this issue and find a solution. For reference, I’ve installed a barebones installation with no new apps, and this problem persists. I would like to have a resolution that allows me to update normally without having to DFU the phone every time.
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Declared Age Range API: iOS/macOS support
While preparing my app for Declared Age Range capability usage, I've noticed a weird behaviour: the same code works for iOS, but not for macOS. My project uses same target for both platforms, so the capability is enabled for both platforms. The business logic layer is also shared across between platforms. Both UI layers are writter in SwiftUI. The iCloud account used for testing on iOS and macOS devices is the same, so even the consent is shared across both devices. While requestAgeRange(ageGates:) seems to work just fine for iOS app, for macOS app it always throws Not available error (DeclaredAgeRange.AgeRangeService.Error.notAvailable) Am I missing something? Could the API be somehow unavailable for macOS? Should I use AgeRangeService.shared.requestAgeRange(ageGates:in:) for macOS instead of SwiftUI's @Environment-based approach? Also, after giving permission, is there a way to actually revoke it? In Age Range for Apps menu I can only view the list of apps that have my consent to share my age range, but not the ability to revoke it.
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ParticleEmitterComponent Position Offset Issue After iOS 26.1 Update – Seeking Solutions & Workarounds
Problem Summary After upgrading to iOS 26.1 and 26.2, I'm experiencing a particle positioning bug in RealityKit where ParticleEmitterComponent particles render at an incorrect offset relative to their parent entity. This behavior does not occur on iOS 18.6.2 or earlier versions, suggesting a regression introduced in the newer OS builds. Environment Details Operating System: iOS 26.1 & iOS 26.2 Framework: RealityKit Xcode Version: 16.2 (16C5032a) Expected vs. Actual Behavior Expected: Particles should render at the position of the entity to which the ParticleEmitterComponent is attached, matching the behavior on iOS 18.6.2 and earlier. Actual: Particles appear away from their parent entity, creating a visual misalignment that breaks the intended AR experience. Steps to Reproduce Create or open an AR application with RealityKit that uses particle components Attach a ParticleEmitterComponent to an entity via a custom system Run the application on iOS 26.1 or iOS 26.2 Observe that particles render at an offset position away from the entity Minimal Code Example Here's the setup from my test case: Custom Component & System: struct SparkleComponent4: Component {} class SparkleSystem4: System { static let query = EntityQuery(where: .has(SparkleComponent4.self)) required init(scene: Scene) {} func update(context: SceneUpdateContext) { for entity in context.scene.performQuery(Self.query) { // Only add once if entity.components.has(ParticleEmitterComponent.self) { continue } var newEmitter = ParticleEmitterComponent() newEmitter.mainEmitter.color = .constant(.single(.red)) entity.components.set(newEmitter) } } } AR Setup: let material = SimpleMaterial(color: .gray, roughness: 0.15, isMetallic: true) let model = Entity() model.components.set(ModelComponent(mesh: boxMesh, materials: [material])) model.components.set(SparkleComponent4()) model.position = [0, 0.05, 0] model.name = "MyCube" let anchor = AnchorEntity(.plane(.horizontal, classification: .any, minimumBounds: [0.2, 0.2])) anchor.addChild(model) arView.scene.addAnchor(anchor) Questions for the Community Has anyone else encountered this particle positioning issue after updating to iOS 26.1/26.2? Are there known workarounds or configuration changes to ParticleEmitterComponent that restore correct positioning? Is this a confirmed bug, or could there be a change in coordinate system handling or transform inheritance that I'm missing? Additional Information I've already submitted this issue via Feedback Assistant(FB21346746)
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ParticleEmitterComponent Position Offset Issue After iOS 26.1 Update – Seeking Solutions & Workarounds
Problem Summary After upgrading to iOS 26.1 and 26.2, I'm experiencing a particle positioning bug in RealityKit where ParticleEmitterComponent particles render at an incorrect offset relative to their parent entity. This behavior does not occur on iOS 18.6.2 or earlier versions, suggesting a regression introduced in the newer OS builds. Environment Details Operating System: iOS 26.1 & iOS 26.2 Framework: RealityKit Xcode Version: 16.2 (16C5032a) Expected vs. Actual Behavior Expected: Particles should render at the position of the entity to which the ParticleEmitterComponent is attached, matching the behavior on iOS 18.6.2 and earlier. Actual: Particles appear away from their parent entity, creating a visual misalignment that breaks the intended AR experience. Steps to Reproduce Create or open an AR application with RealityKit that uses particle components Attach a ParticleEmitterComponent to an entity via a custom system Run the application on iOS 26.1 or iOS 26.2 Observe that particles render at an offset position away from the entity Minimal Code Example Here's the setup from my test case: Custom Component & System: struct SparkleComponent4: Component {} class SparkleSystem4: System { static let query = EntityQuery(where: .has(SparkleComponent4.self)) required init(scene: Scene) {} func update(context: SceneUpdateContext) { for entity in context.scene.performQuery(Self.query) { // Only add once if entity.components.has(ParticleEmitterComponent.self) { continue } var newEmitter = ParticleEmitterComponent() newEmitter.mainEmitter.color = .constant(.single(.red)) entity.components.set(newEmitter) } } } AR Setup: let material = SimpleMaterial(color: .gray, roughness: 0.15, isMetallic: true) let model = Entity() model.components.set(ModelComponent(mesh: boxMesh, materials: [material])) model.components.set(SparkleComponent4()) model.position = [0, 0.05, 0] model.name = "MyCube" let anchor = AnchorEntity(.plane(.horizontal, classification: .any, minimumBounds: [0.2, 0.2])) anchor.addChild(model) arView.scene.addAnchor(anchor) Questions for the Community Has anyone else encountered this particle positioning issue after updating to iOS 26.1/26.2? Are there known workarounds or configuration changes to ParticleEmitterComponent that restore correct positioning? Is this a confirmed bug, or could there be a change in coordinate system handling or transform inheritance that I'm missing? Additional Information I've already submitted this issue via Feedback Assistant(FB21346746)
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Disconnect from AirPlay device programmatically
Hello there, I'm trying to implement feature which uses AirPlay with Apple TV. I want to disconnect from the device programmatically when something happens. Under something I mean a situation when a user wants to stop broadcasting (for example close the PiP window on his phone). I use this snippet: try audioSession.setCategory(.playAndRecord, options: .defaultToSpeaker) try audioSession.setActive(true, options: .notifyOthersOnDeactivation) It works fine sometimes but not always (it works on iOS 18 but it doesn't on iOS 17 or ). So I thought it's a bug and create a ticker to feedback assistant (FB21220013). The support told me write a post on the forum.
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Apple Pay In-App Provisioning – Apple server failure when adding a card
During Apple Pay in-app provisioning (EV_ECC_v2), our iOS app successfully obtains the issuer provisioning certificates and generates cryptographic material. The flow fails when Apple posts the card blob to Apple’s broker (card creation step), returning HTTP 500 from .../broker/v4/devices/{SEID}/cards. Steps: Call issuerProvisioningCertificates?encryptionVersion=EV_ECC_v2 → 200 OK; returns ECC leaf + Apple Root CA chain; nonce=2a831be4. 2. Build {encryptedCardData, activationData, ephemeralPublicKey} 3. POST /broker/v4/devices/{SEID}/cards Expected: 200 OK on /broker/v4/devices/{SEID}/cards, or 5xx with a descriptive error if payload/cryptography is invalid. Observed: 500 Internal Server Error from Apple broker on /cards (labeled “eligibility” in PassKit logs), causing a terminal failure in Wallet UI.
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How to add view below navigation bar to extend scroll edge effect
Hello! What UIKit API enables you to add a view below the navigation bar and extend the scroll edge effect below it in iOS 26? safeAreaBar is how you do it in SwiftUI but I need to achieve this design in my UIKit app (which has a collection view in a view controller in a navigation controller). struct ContentView: View { let segments = ["First", "Second", "Third"] @State private var selectedSegment = "First" var body: some View { NavigationStack { List(0..<50, id: \.self) { i in Text("Row \(i + 1)") } .safeAreaBar(edge: .top) { Picker("Segment", selection: $selectedSegment) { ForEach(segments, id: \.self) { Text($0) } } .pickerStyle(.segmented) .padding(.horizontal) .padding(.bottom, 8) } .navigationTitle("Title") .navigationBarTitleDisplayMode(.inline) } } }
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Importing files to Files.app in iOS 26 Simulator
In previous versions of the simulator, it was possible to import files into the Files app by dragging them from the Finder into the Simulator. It appears that in the iOS 26 Simulator, this opens the file in Safari. I've only tried it with .json files so far. The documentation at https://developer.apple.com/documentation/xcode/sharing-data-with-simulator says that the original behaviour should happen: To add files to Simulator, select one or more files in Finder on your Mac, then click the Share button. Select Simulator from the share destination list. Choose the simulated device from the drop-down list. Simulator opens the Files app, and lets you select where to save the files. I'd love to learn if this is intentional behaviour, and if so, what workarounds there might be. I use this pattern quite a lot, as I have a HealthKit app, and I've built a system that allows me to export workouts as JSON files from a real device, that I can then import into a simulator for testing. Edit: I found a workaround. Make a folder in Files.app, then search for it within ~/Library/Developer/CoreSimulator/Devices. Open the folder in Finder, then add any files you want to be available in the Simulator.
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iOS 17 CarPlay message notification navigating to app instead of announcing messages
After the update to iOS 17, tapping on message notification shown on CarPlay Dashboard is navigating to the CarPlay app instead of announcing the message notification. Announce Notifications turned ON Announce Messages turned ON Announce New Messages option is selected Other apps message notifications are announced as expected when tapping on the notification implying that the settings are set as required. Enabled com.apple.developer.carplay-communication Class CustomCarPlaySceneDelegate: UIResponder, CPTemplateApplicationSceneDelegate { func templateApplicationScene(_ templateApplicationScene: CPTemplateApplicationScene, didConnect interfaceController: CPInterfaceController) func templateApplicationScene(_ templateApplicationScene: CPTemplateApplicationScene, didDisconnectInterfaceController interfaceController: CPInterfaceController) func scene(_ scene: UIScene, willContinueUserActivityWithType userActivityType: String) }
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Dec ’25
关于 WKWebView 加载本地文件时 localStorage 数据丢失的情况
在 iOS 平台使用 WKWebView 通过file://协议加载本地 HTML 文件时,存储在localStorage中的数据会在 App 后台切换、进程重启后偶尔丢失;但相同代码在安卓 / 鸿蒙平台无此问题。 现在的文档 仅明确了「默认数据存储(defaultDataStore)可将网站数据持久化到磁盘,非持久化存储(nonPersistent)仅存内存」的基础规则; 未提及「file://协议内容即使使用默认持久化存储,也会被归为临时内存存储」这一关键场景限制; 仅在WKURLSchemeHandler关联说明中隐含「自定义 URL 协议可处理 WebKit 原生不支持的 URL 方案」,但未直接关联file://的存储问题。 我找不到如何处理这个问题的官方文档,仅仅有其他的博客说需要增加http/https加载就没有这个问题。 请提供给我官方文档或者官方回复 关于出现这种file:/加载html出现问题的处理办法
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Dec ’25
Can Critical Alerts Trigger Text-to-Speech and Vibration in Background & Terminated State?
Hello All, I want to implement Text-to-Speech (TTS) and vibration functionality when a push notification arrives. In my app, I am already using Critical Alerts, and the critical alert sound plays correctly in all app states. However, I need to confirm whether it is possible to trigger Text-to-Speech and custom vibration in all app states: Foreground Background Terminated (killed) state My Questions: Is it technically possible for iOS to run Text-to-Speech (using AVSpeechSynthesizer) when a critical alert notification arrives in background or terminated state? Is it possible to trigger custom vibration patterns from a critical alert when the app is not running? If yes, can someone please provide guidance or sample code on how to implement this? If no, can Apple explain the limitation or provide documentation confirming that TTS and vibration cannot be triggered in background/kill states? What works currently: TTS and vibration only work in foreground when the app is active. Critical alert sound works correctly in all states. I want confirmation on whether iOS supports background/terminated TTS and vibration, or if this is a platform restriction even when using Critical Alerts. Thank you!
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Dec ’25
@state update not reflecting on UI.
I’m facing an issue in our native iOS app that occurs specifically on iOS 26.1 (not observed on any lower versions). When I update a @State field value, the UI does not reflect the change as expected. The @State variable updates internally, but the view does not re-render. This behaviour started after upgrading to iOS 26.1. Works fine on iOS 26.0 and earlier versions. Has anyone else encountered this issue or found a workaround? Any insights or suggestions would be greatly appreciated.
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Dec ’25
Unexpected behavior with multiple apps installed which use shared groups
If I have two iOS apps, with bundle ids com.mycompany.A and com.mycompany.B, and they both have the shared group id of group.com.mycompany.B, then they can read/write data to same file (in shared defaults or, for example, a Realm database saved to the same shared group location). What I have noticed is that if both apps get installed and some data X written to shared defaults (but data which isn't accessed by both apps i.e. if only app A uses this data), then if app A is deleted and reinstalled then X is not deleted in this situation (unless both apps A and B are deleted). I guess that is to be expected as they both use the same group id and the OS won't clear that area out unless both apps are deleted. However I think I am seeing a situation where if app A has group.com.mycompany.A as its group and app B has group.com.mycompany.B as its group, then this is still the same situation - data written by app B for doesn't get deleted if only app B is deleted/reinstalled on the phone. It won't get deleted unless both app B and A are deleted from the phone. This is not what I was expecting. I need to perform some more checks (its more complex to verify as app A is developed by one company and app B by another), but if this were to be the case would this be unexpected behavior by the OS? Presumably it would be unexpected as the container should be identified by the full group id and not a partial portion of the group id right?
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Dec ’25
How do I prevent screenshots using SwiftUI?
Hi Team, How do I prevent screenshots using SwiftUI. I was using this solution on UIKit: extension UIView { func makeSecure() { DispatchQueue.main.async { let protectedView = UIView() self.superview?.addSubview(protectedView) // constraints... let secureView = SecureView() self.superview?.addSubview(secureView) // constraints... secureView.addSecureSubview(self) // constraints... } } } class SecureView: UIView { private lazy var secureField: UIView = { var secureField: UIView = UIView() // ... if let secureContainer = SecureField().secureContainer { secureField = secureContainer } ... return secureField }() required init() { ... } } Is it posible to do the same thing using SwiftUI. Do we have an example? What would you recommend when we work with confidencial information in SwiftUI like bank account information? Thanks in advance!
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Dec ’25