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Reply to CallKit does not activate audio session with higher probability after upgrading to iOS 18.4.1
36 minutes, base on our log, the call at 16:58 have no problem. and the app went into background from 17:00 - 17:36(screen lock), until an incoming call push woke up the app. OK. That time scale does fit my other theory, which makes my optimistic about the workaround I’m suggesting. So, you recommended we set the configuration before CallKit is first used after the app starts? At this point, my best advice would be to set the configuration before every call. There are probably cases where it would be reasonable to skip that, however: Will this overwrite the configuration of CallKit? Keep in mind that the configuration here is primarily just a set of settings that control a few key details of how CallKit handles your call. Many apps already set the configuration immediately before reporting calls—for example, to customize the ringtone based on the incoming caller or to prevent that particular call from listing in recents. That leads to here: We may give this a try, but it's difficult to determine if it will wo
Topic: App & System Services SubTopic: General Tags:
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Reply to Do we need to explicitly register all high-level interaction events for every widget in UIKit?
If I have a complex UI with hundreds or thousands of widgets, am I expected to perform these registrations You perform the registrations you need based on what you are doing. So, if you decide to use a UIControl, then yes, you need to decide which UIControlEvent you need. As mentioned above, that's likely just primaryActionTriggered, though. And for UIView's, unless you have legacy code where you are handling responder-based delivery like touchesBegan:, touchesEnded: you should prefer UIGestureRecognizer instead. That could be one of our pre-packaged gestures, like UITapGestureRecognizer or UILongPressGestureRecognizer, or you could write your own subclass with the event protocols mentioned in UIGestureRecognizerSubclass.h. There is no centralized place recognize all the things, because not all gestures are needed all the time. For simple tapping of something on screen, you do not need UITapGestureRecognizer, UILongPressGestureRecognizer, UIPanGestureRecognizer, and UIPinchGestureRecognizer. You only
Topic: UI Frameworks SubTopic: UIKit Tags:
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Reply to Error with guardrailViolation and underlyingErrors
That error indicates that your device is missing some of the assets it needs to run FoundationModels. This is a bug. Please do two things. The first will help us understand how you got into a bad state in the first place, and the second may get it back into a good state. First, please take a sysdiagnose and submit it via Feedback Assistant. When you do, please include a link to your forum post. If you could also post the feedback id here when you're done, that would be helpful. How to collect a sysdiagnose Second, with WiFi turned on, navigate to Settings > Apple Intelligence & Siri. This should trigger your device to attempt to download missing assets. Wait a few minutes and then try running your code again.
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Alarm.Schedule.Relative gets scheduled to next day if too close?
Hi there, Thank you for the framework 🙏 if I use Alarm.Schedule.Relative with Alarm.Schedule.Relative.Time(hour: hour, minute: minute) and Alarm.Schedule.Relative.Recurrence.never it seems like there is some (odd?) limit where alarm will get scheduled to next day if too close? For example, lets say the current time is 12:00 PM, if I schedule alarm for 12:02 PM, it will schedule it for next day, while if I do 12:05 PM it will work as expected. Is that expected? If yes, what's the behavior and is that documented anywhere? I would expect any alarm thats scheduled in the future to fire for the current day (maybe if it's only 1 minute it gets tricky). One problem is also that even if the framework says an alarm is scheduled, I don't have access to the next alarm date? I wish I did as otherwise I have to compute it (by guessing the AlarmKit calculation) if I want to do anything with that date. Honestly, sometimes I think I am just going crazy when the alarm doesn't fire, but there SEEMS to be some odd behavior aro
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Reply to Automatic App Icon Style Change in iOS 26
Yes, this is a system behavior. It tries to add a glass effect to existing icons even though it does not work with every icon. You cannot customize this. When you compile with Xcode 26 you will lose this effect on your existing icon too as Apple assumes you do not want the glass effect. For all other cases, use Icon Composer.
Topic: App & System Services SubTopic: General Tags:
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Reply to CallKit does not activate audio session with higher probability after upgrading to iOS 18.4.1
Are you absolutely certain of this? If so, then do you have any idea/guess as to how much time was between the last working call and the first failed call? 36 minutes, base on our log, the call at 16:58 have no problem. and the app went into background from 17:00 - 17:36(screen lock), until an incoming call push woke up the app. The issue began to occur on this call and subsequent calls. My intuition is that #2 will probably solve the issue, but if I'm wrong, then #3 should ensure that the issue is corrected, and the next call will work. So, you recommended we set the configuration before CallKit is first used after the app starts? Will this overwrite the configuration of CallKit? We may give this a try, but it's difficult to determine if it will work or not since it's hard to reproduce. We might need to implement this in our production environment and check the metrics to assess its effectiveness. I will discuss with team.
Topic: App & System Services SubTopic: General Tags:
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Images with unusual color spaces not correctly loaded by Core Image
Some users reported that their images are not loading correctly in our app. After a lot of debugging we identified the following: This only happens when the app is build for Mac Catalyst. Not on iOS, iPadOS, or “real” macOS (AppKit). The images in question have unusual color spaces. We observed the issue for uRGB and eciRGB v2. Those images are rendered correctly in Photos and Preview on all platforms. When displaying the image inside of a UIImageView or in a SwiftUI Image, they render correctly. The issue only occurs when loading the image via Core Image. When comparing the different Core Image render graphs between AppKit (working) and Catalyst (faulty) builds, they look identical—except for the result. Mac (AppKit): Catalyst: Something seems to be off when Core Image tries to load an image with foreign color space in Catalyst. We identified a workaround: By using a CGImageDestination to transcode the image using the kCGImageDestinationOptimizeColorForSharing option, Image I/O will convert the image to sRGB
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Reply to [iOS 26 Beta] BGTaskScheduler.supportedResources incorrectly reports no GPU support for BGContinuedProcessingTask on capable hardware
@DTS Engineer Hi Kevin, Thank you so much for the definitive and incredibly helpful answer. This clarification has saved our team a huge amount of debugging time, and we truly appreciate you sharing this specific information. That makes perfect sense and explains the behavior we were seeing. The main source of our confusion was the documentation, which lists both iOS 26.0+ and iPadOS 26.0+, leading us to assume iPhone support. Your clarification that it's currently limited to iPads with an M3 chip or better is exactly the information we were missing. Just one follow-up question for our team's planning purposes. While we understand this may not be formally documented yet, is there an official device compatibility list or a specific documentation page we should monitor for future updates on these hardware requirements? Having a definitive source to reference would be a great help for us as we define our feature set across devices. Thanks again for your help!
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Debugging updateAppShortcutParameters not adding shortcuts to Shortcuts App
So I'm developing an ios application which should be showing shortcuts, but its not. I'm not sure how to debug why the functionality isnt working. Believe I'm correctly calling AppShortcutsProvider's updateAppShortcutParameters, but I dont see any errors in the console showing me a problem. And in fact, I made a simplified just swift version that works before I tried to integrate it into a more complex project. But now I'm at a loss as to what is going wrong or what debug tools I can use to figure it out. Any help would be appreciated. When building my project I see: 025-08-18 14:07:49.371 appintentsmetadataprocessor[57506:35387547] Starting appintentsmetadataprocessor export 2025-08-18 14:07:49.414 appintentsmetadataprocessor[57506:35387547] Writing Metadata.appintents 2025-08-18 14:07:49.414 appintentsmetadataprocessor[57506:35387547] Metadata root: /Users/jpetersen/Library/Developer/Xcode/DerivedData/Unity-iPhone-dtnhxevagfkzsjdavesziaqrwisr/Build/Products/ReleaseForRunning-iphoneos/Unity
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Modal Presentation in UIKit Adds Solid Background in iOS 26
Hello, I have a number of UIViewControllers that are presented as follows: vc.modalPresentationStyle = UIModalPresentationStyle.popover vc.modalTransitionStyle = UIModalTransitionStyle.coverVertical self.present(vc, animated: true, completion: nil) The VC is designed from a Storyboard where I set the 'view' of the VC to have a .clear 'backgroundColor', I have a smaller 'Alert View' added as a subview which is what the user interacts with. In iOS 13 - iOS 18 this would present modally, not take up the entire screen and allow the user to see relevant context from the screen underneath. In iOS 26 Beta 5 and every beta prior the system injects a 'UIDropShadowView' in the View Hierarchy, this view has a solid color backdrop, either white/black depending on light/dark mode. This causes all underlying content to be blocked and essentially forces a full screen modal presentation despite the existing design. I am looking for a way to remove this solid color. I'm not sure if it's intentional or a bug / oversight. I hav
Topic: UI Frameworks SubTopic: UIKit Tags:
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Xcode GPU capture missing initial buffer data
I'm using the WebGPU abstraction library wgpu to build an app using compute shaders that compiles to Metal (on macOS), and in certain patterns where it uses a staging buffer for initial data, the data is just total missing from the capture, breaking other workflows such as shader debugging or seeing the completed results in the final buffer. I wrote up details including a repro project and screen shots of the issue at https://github.com/gfx-rs/wgpu/issues/8111 . Seems like an Xcode bug. Any ideas? I'm happy to help investigate further if I can.
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How to listen for QUIC connections using the new NetworkListener in iOS 26?
I was excited about the new APIs added to Network.framework in iOS 26 that offer structure concurrency support out of the box and a more modern API design in general. However I have been unable to use them to create a device-to-device QUIC connection. The blocker I ran into is that NetworkListener's run method requires the network protocol to conform to OneToOneProtocol, whereas QUIC conforms to MultiplexProtocol. And there doesn't seem to be any way to accept an incoming MultiplexProtocol connection? Nor does it seem possible to turn a UDP connection into a QUIC connection using NetworkConnection.prependProtocols() as that also only works for network protocols conforming to OneToOneProtocol. I suspect this is an accidental omission in the API design (?), and already filed a Feedback (FB18620438). But maybe I am missing something and there is a workaround or a different way to listen for incoming QUIC connections using the new NetworkListener? QUIC.TLS has methods peerAuthenticationRequired(Bool) and
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Display segmented control in iOS 26 with the previous rounded rectangle style
The default style for a segmented picker in iOS 26 is now a capsule shape. Is it possible to get back the previous rounded rectangle shape? In SwiftUI I have tried using the clipShape, containerShape, and background modifiers, applying a RoundedRectangle shape with a corner radius, to no avail. In UIKit I have tried to adjust the corner configuration for the UISegmentedControl, also to no avail. Am I missing something really obvious or is it impossible to change the style here? 🤔
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