Xcode 16.2 無法在IOS 18.2 Debug Xcode 16.2 iOS 18.2 直接建立新專案 Xcode -> Create New Project -> Multiplatform -> Application -> App 選擇 實體手機 -> 執行 error: attach by pid '1050' failed -- attach failed (Not allowed to attach to process. Look in the console messages (Console.app), near the debugserver entries, when the attach failed. The subsystem that denied the attach permission will likely have logged an informative message about why it was denied.) Logging Error: Failed to initialize logging system due to time out. Log messages may be missing. If this issue persists, try setting IDEPreferLogStreaming=YES in the active scheme actions environment variables.

This is easy to reproduce，in dark mode, 2 UIViewControllers A and B, A present B. code: class AAA: UIViewController { override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "AAA" view.backgroundColor = .systemBackground } override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { present(UINavigationController(rootViewController: BBB()), animated: true) } } class BBB: UIViewController { override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "BBB" view.backgroundColor = .systemBackground } override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { dismiss(animated: true) } } before present: after present: Obviously, the backgroundColor of the view has changed. I guess it's because view's backgroundColor is the same as the the window, so changed the color to distinguish between the controller and the background, but this brought unexpected changes which is confusing. I want to know how this happened and how I can manually control it

iOS18.2 / iPhone 16pro / Xcode 16.2 'traitCollectionDidChange' This function has been deprecated since ios17. However, in ios18, when I changed the app to the background state or changed it to the foreground state again, it was confirmed that the function worked. It hasn't been confirmed in ios17, but why is it only confirmed in ios18?

iOS18.2 / iPhone16 pro / xcode16.2 'traitCollectionDidChange' This function has been deprecated in iOS17. However, when I debugged it, I confirmed that it is not called on iOS17, but it is called on iOS18.2. What is the reason?

Hi, I’ve encountered an issue with Safari’s behavior when Prevent Cross-Site Tracking is enabled in iOS, related to DNS filtering via an implemented NEDNSProxyProvider. Here’s a step-by-step breakdown: In Safari, when attempting to query a blocked domain (according to the filtering policy of the NEDNSProxyProvider), the page is blocked as expected. Closing Safari without closing the tab with the blocked domain. Reopening Safari – Expected result: The page remains blocked; Actual result: The page loads and bypasses the NEDNSProxyProvider (no logs are received for this flow). Tapping the refresh button causes the page to be blocked, as the DNS Proxy Provider intercepts the new request. Note: This issue is only reproducible in general tabs in Safari. In private tabs, a fresh DNS query is generated each time, and the blocking behavior works as expected. I also tested Google Chrome, where the domain is blocked consistently. I attempted to filter this issue via Content Filter, but the only connection received by NEFilterDataProvider is for com.apple.Safari.SearchHelper with ssl.gstatic.com. Could you advise on how to handle this behaviour? Would be grateful to hear any ideas

All, Thanks in advance! I'm having a very hard time increasing the MTU to any value beyond 20. The research I've done states iOS 16.1 and beyond supports up to 512 bytes. Yet, the peripheral device will only read 20 bytes. It's to be noted that I'm using Expo SDK 51 Bare Workflow, and the react-native-ble-plx library. I have the app functioning as both Central and Peripheral on iOS 18.1 devices, and data is successfully being written and read to the characteristic. Because the Expo app is Bare Workflow, I'm able to make any configurations via Xcode, and if there is any patches needed to the react-native-ble-plx library, we have the architecture to support that too. I wanted to provide that context before being recommended to go to the Expo forums (which I have/will be). I also added the CoreBluetooth framework to the project in hopes that would overwrite the react-native-ble-plx imports, but I noticed react-native-ble-plx uses Swift while CoreBluetooth is Objective-C. Looking forward to your responses!

If I run an app with a Message Filter Extension on a handset with iOS 18.2 then it runs fine, however if I run the exact same app with no changes on a different phone which has iOS 17.6.1 installed then the following error occurs when the extension is enabled within Settings: dyld[631]: Symbol not found: _$sSo40ILMessageFilterCapabilitiesQueryResponseC14IdentityLookupE21promotionalSubActionsSaySo0abI6ActionVGvs

Hello the documentation for message filtering has been offline for a few days now, is it possible to get it back, or is there somewhere else it can be viewed in the meanwhile? https://developer.apple.com/documentation/sms_and_call_reporting/sms_and_mms_message_filtering (I just chose topic/tags at random, there aren't any relevant for this)

Hello, I’m encountering a problem with WebSocket connections in Safari on iOS 18.1 and later when initiated from an iframe. The same implementation works perfectly in other browsers like Chrome but fails in Safari. In Safari, the WebSocket connection fails with error message "WebSocket connection to 'wss://MY_CONNECTION_URL' failed: The internet connection appears to be offline." Has anyone else faced this? Is this a known limitation or bug in Safari? Any workarounds or solutions would be greatly appreciated. Thank you!

I'm implementing Apple wallet extension in an iOS app. Currently following this documentation https://developer.apple.com/documentation/passkit/implementing-wallet-extensions I'm facing challages while testing the extension. Any suggestion how can i test it during developmet. Like if i want to test the storyboard from Wallet UI extension. Any suggestions or helping material would be appriciated.

When I use the screenshot feature, I find that the screenshot becomes darker in color compared to the original image, this seems to be a bug in iOS 18. can anyone help me?

I have an issue where a very specific configuration of .overlay, withAnimation, and a bindable state can freeze the app when the state changes. I've isolated the problematic source code into a sample project can be found here that demonstrates the issue: https://github.com/katagaki/IcyOverlay Steps to Reproduce To reproduce the issue, tap the 'Simulate Content Load' button. Once the progress bar has completed, a switch is toggled to hide the progress view, which causes the overlay to disappear, and the app to freeze. Any help and/or advice will be appreciated! Development Environment Xcode Version 16.2 (16C5032a), macOS 15.2（24C101） iOS SDK: 18.2 (22C146), Simulator: 18.2 (22C150)

I've been working on implementing alternate app icons for my iOS app, and everything works perfectly in debug builds on both the simulator and a physical device. However, when testing on TestFlight, I encounter the following error: The requested operation couldn’t be completed because the feature is not supported. Has anyone faced this issue before? Is there a specific TestFlight configuration or setup I might be missing to enable alternate app icon functionality?

I'm getting literally hundreds and hundreds of these lines appearing in the Xcode console when running the app. What's the cause? Too much logging? (if so this didn't used to appear with earlier version of Xcode, I'm currently running Xcode 16.2) How to do this: "set IDELogRedirectionPolicy to oslogToStdio in the environment of the executable." And what does doing that do? <snip> 1 log/signpost messages lost due to high rates in live mode recording. To guarantee delivery of all logs, set IDELogRedirectionPolicy to oslogToStdio in the environment of the executable. 1 log/signpost messages lost due to high rates in live mode recording. To guarantee delivery of all logs, set IDELogRedirectionPolicy to oslogToStdio in the environment of the executable. <snip>

When I download specific files (not limited to a single website), even if I find that the downloaded file size matches the original file size and the downloaded file size no longer changes, Safari still does not stop the download thread, but continues to wait indefinitely. This results in the Safari not terminating the download thread even after the file download is completed, making it impossible to complete the download; The file has not been landed and cannot be obtained. This prevents me from downloading some files. Please fix this problem. In addition, I found that in iOS 18.2, during the process of downloading files on Safari, the synchronization and backup flags appear in the upper right corner of the notification bar. I am not sure if this is an unexpected behavior, but the flag still lingers for a long time after manually canceling the download thread. (the download thread is waiting indefinitely) Feedback Number: [FB16124044]

Hello! Is there a way to perform an action before alert (no matter which) appears and sheet (no matter which) opens? Perhaps, system event or something like this.

My app currently doesn't specify multiple different appearances (Any, Dark, Tinted) for the App Icon. I want to release an update in which I plan to create a new AppIcon resouce which is going to contain these 3 appearances so that users on iOS 18 can have better experience. Once I will provide the new App Icon with the Any, Dark and Tinted variants, which of these variants will the App Store use for my app on the App Store? Does it depend on the user's system-wide choice of appearance? That is, would the App Store show a different icon appearance for my app for a person using the "Dark" option and a different app icon for the person using the "Light" option? Can I force the App Store to always display the "Any" variant of my icon on the App Store, regardless of the user's dark mode setting? My app targets iOS 13. What would happen if a person running iOS 13 would install the new update of my app, which newly contains all 3 App Icon color appearances? Would the "Any" variant be displayed and would iOS 13 ignore the "Dark" and "Tinted" variants? Or is there no backwards compatibility and older iOS version would display a blank app icon (the icon used by iOS for apps, which do not specify an App Icon)? P.S. Is this documented somewhere? Perhaps in a WWDC video or in documentation? I could not find enough in-depth information on this topic (especially on app icon appearance behavior on iOS 17 and older).

The Apple documentation for [UIViewController willMoveToParentViewController:] states, Called just before the view controller is added or removed from a container view controller. Hence, the view controller being popped should appear at the top of the navStack when willMoveToParentViewController: is called. In iPadOS 16 and 17 the view controller being popped appears at the top of the navStack when willMoveToParentViewController: is called. In iPadOS 18 the view controller being popped has already been (incorrectly) removed from the navStack. We confirmed this bug using iPadOS 18.2 as well as 18.0. Our app relies upon the contents of the navStack within willMoveToParentViewController: to track the user's location within a folder hierarchy. Our app works smoothly on iPadOS 16 and 17. Conversely, our customers running iPadOS 18 have lost client data and corrupted their data folders as a result of this bug! These customers are angry -- not surprisingly, some have asked for refunds and submitted negative app reviews. Why doesn't willMoveToParentViewController: provide the correct navStack in iPadOS 18.2?

Does any ont encountered such crash? It only occured on iOS18 device. Application Specific Information: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '_endUndoGroupRemovingIfEmpty:: _UITextUndoManager 0x30d3bca50 is in invalid state, endUndoGrouping called with no matching begin UserInfo:(null)' Pthread id: 2420148 Thread 0 Crashed: 0 CoreFoundation __exceptionPreprocess + 164 1 libobjc.A.dylib objc_exception_throw + 88 2 Foundation -[NSUndoManager endUndoGrouping] + 0 3 Foundation __NSFirePerformWithOrder + 296 4 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36 5 CoreFoundation __CFRunLoopDoObservers + 552 6 CoreFoundation __CFRunLoopRun + 788 7 CoreFoundation CFRunLoopRunSpecific + 588 8 GraphicsServices GSEventRunModal + 164 9 UIKitCore -[UIApplication _run] + 816 10 UIKitCore UIApplicationMain + 340 11 application main (main.m:39) 12 (null) 0x00000001abfecde8 0x0 + 7180570088

I’m developing an app using RealityKit and RealityView. On newer iPhones, such as the iPhone 15 Pro, Object Occlusion appears to be enabled by default, which causes 3D entities to be hidden behind real-world objects in the scene. However, I need to disable this behavior to ensure proper rendering of my 3D content. This issue does not occur on older devices like the iPhone 13, where the app works as intended. I haven’t been able to find a solution to explicitly disable object occlusion on the newer devices for RealityView. Any guidance or suggestions to resolve this issue would be greatly appreciated! Thanks!