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“Visual Studio Maui IOS”

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UI Glitch in Toolbar Menu Picker After Migrating to Xcode 26
I am experiencing a UI issue after migrating my app from Xcode 16 to Xcode 26. In my implementation, I have a toolbar that contains multiple buttons along with a dropdown menu. The hierarchy for dropdown is as follows: **Toolbar → ToolbarItem → View → Menu → Picker ** Prior to Xcode 26, this setup worked smoothly in production builds. The dropdown (Menu + Picker) behaves as expected, and selecting a value triggers loading a dataset containing thousands of records on the screen. However, after upgrading to Xcode 26, I am observing an animation glitch when dismissing the dropdown after a selection is made. Specifically, the dropdown briefly shows a “capsule-like” animation artifact during dismissal, which persists for a few seconds. This visual issue is noticeable and negatively impacts the perceived performance and user experience of the app. This issue is occurring in an already released app built with Xcode 26. Questions: Is this a known issue or regression in Xcode 26 / SwiftUI Menu or Picker compo
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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38
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How to manually install iOS 26 Simulator download archive?
For difficult reasons I won’t get into, I ended up manually downloading the latest iOS 26 simulator runtime. I now have a file named 78756498-8AB4-4E5A-986C-7AA435758657.aar copied to my Mac. How do I get this archive installed so Xcode 26 recognizes it as a proper simulator runtime component? All searching I‘ve done for manually installing simulators references dmg files and older versions of Xcode. There’s no mention of aar files. When I tried the command: sudo xcrun simctl runtime add ./78756498-8AB4-4E5A-986C-7AA435758657.aar I get the result: An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=22): Error while creating AEA backend Invalid argument I tried to use Archive Utility to open the file but that just says it is unable to expand the file. I even tried renaming the file with a dmg extension and then tried mounting the file and I get the same “AEA backend” error. My Mac doesn’t have sufficient Internet access to let me download and install this normally through
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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752
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Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Thanks for the update. Just to clarify: Starting from April we must use Xcode 26.X to upload apps to the App Store (using older Xcode versions will fail). In addition, Xcode 26.X deployment target is iOS 15+. So, no option to release apps targeted to older iOS versions? If this is the case, why this isn't blocked during the Xcode build process? or even during the App Store processing? Also, what about the apps we already published a week ago with target deployment 12.0?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
2d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Thank you for the reply, but according to the requirements on this link https://developer.apple.com/cn/app-store/submitting/, starting from April 2026, apps uploaded to App Store Connect must use iOS 26 SDK, which means Xcode 26 is also required. This seems contradictory to resolving the current issue. Could you provide the specific reason for the aforementioned problem? Why could the ipa compiled with Xcode 26 a week ago be installed, run, and used on an iPhone 6 12.5.8?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
2d
DeviceActivityMonitor extension rejected by App Store Connect validator — NSExtensionPointIdentifier "com.apple.deviceactivity.monitor" invalid (IrisAPI -19241)
Hi everyone, I'm building an iOS app that uses a DeviceActivityMonitor app extension as part of the Screen Time / Family Controls API. Every time I try to upload my IPA to App Store Connect, the validation fails with this error: Invalid Info.plist value. The value of the NSExtensionPointIdentifier key, com.apple.deviceactivity.monitor, in the Info.plist of 'Alexandria.app/PlugIns/AlexandriaActivityMonitor.appex' is invalid. Error Domain=IrisAPI Code=-19241, iris-code=STATE_ERROR.VALIDATION_ERROR What I have verified (everything looks correct): NSExtensionPointIdentifier = com.apple.deviceactivity.monitor NSExtensionPrincipalClass = AlexandriaActivityMonitor.AlexandriaActivityMonitorExtension (correctly resolved in the compiled binary, verified with plutil -p) The Swift class correctly subclasses DeviceActivityMonitor CFBundleShortVersionString matches the main app Both the main app and extension provisioning profiles explicitly contain com.apple.developer.family-controls = true (verified by inspectin
Topic: App & System Services SubTopic: General Tags:
3
0
139
3d
UIView + CATiledLayer + SwiftUI Hosting + iOS 26 = Crash?
Our app uses a UIView backed by a CATiledLayer that is embedded in a UIScrollView, to represent a large document viewer. (PDF data, actually.) It needs to be big - far too big to allocate a single layer, and it needs to be able to reveal more detail as you zoom in. This is the exact use case for a CATiledLayer. CATiledLayer does its drawing on a background thread, as you know, and we've always taken care to make our draw method thread-safe. It has worked great for us, for over a decade now. However, starting with iOS 26, we've been having some surprising crashes. It looks like our CATiledLayer (I think?) is trying to trigger a layout on the background thread as well. This is frustrating because it doesn't have any subviews or sublayers - there's no reason for it. I'm suspecting the CATiledLayer because it does its drawing on a thread, so maybe it would also do other things there, but honestly, I'm not sure - it's hard to tell. Here's the crash. Normally with a crash like this, the solution is to boun
Topic: UI Frameworks SubTopic: UIKit
2
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161
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Screen Time APIs showing severe inconsistencies (DeviceActivity not firing + impossible usage data)
Hi everyone, I’m the developer of one sec, an app used by a large number of users globally to reduce time spent on social media and to build healthier digital habits. Because of this, we rely heavily on Apple’s Screen Time / DeviceActivity / FamilyControls, ManagedSettings APIs – and unfortunately, we’re seeing increasingly severe issues in production that directly impact hundreds of thousands of real iOS users. During the past years, we have been busy filing dozens of feedback requests for different Screen Time issues – and there has been no response from Apple at all. Developer Relations might be able to confirm that the bugs are present and that they ended up with the right team – but they are never addressed, neither are workarounds provided. Instead, the situation gets worse and worse. iOS 26 introduced a series of heavy regressions (which have been reported via Apple’s official bug report tool Feedback Assistant on iOS 26 beta 1 in June 2025 – and have not been addressed 10 Mo
Topic: App & System Services SubTopic: General Tags:
1
0
208
3d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Thank you for the post. I recommend reviewing the Xcode system requirements for the target listed below. Link to Xcode System Requirements The device support section will provide you with the supported iOS versions. You can view all the versions of Xcode by expanding the “Other Xcode versions” tab. Enables the download of the Xcode version tailored to the desired iOS platform, accessible directly from the developer’s website. Albert
  Worldwide Developer Relations.
Topic: Developer Tools & Services SubTopic: Xcode Tags:
3d
Reply to AlarmKit alarm occasionally fires at exactly 12:00 AM
Hi SeoulForest and everyone, I’m joining this thread to share additional information regarding the reported issues with AlarmKit. While I don’t have a solution yet, I have both received user reports and personally experienced the same or similar behavior. The occurrence is rare (about once a month), but it happens consistently enough to be a reliability concern for an alarm-based feature. My Implementation Context: I have implemented a system that schedules approximately 60 fixed-schedule alarms. The Issue: Alarms occasionally fail to trigger at the scheduled time. Comparison: I set Local Notifications using the exact same date objects. These notifications arrive perfectly on time, which confirms there are no errors in the date/time logic itself. Observed Behaviors: Delayed Triggers: Alarms sometimes fire several minutes late, or in some cases, not at all for a long period. Midnight Firing: I have observed instances where an alarm that failed to trigger at its scheduled time would suddenly fire around midnigh
Topic: App & System Services SubTopic: General Tags:
3d
DeviceActivityMonitor extension intervalDidStart never called on iOS 26.3.1
On iOS 26.3.1, deviceactivityd produces zero log output and never wakes a DeviceActivityMonitor extension at the scheduled time, even when the schedule is successfully registered. The extension's intervalDidStart(for:) method is never called. Steps to Reproduce: Create an app with a DeviceActivityMonitor extension subclass Add the com.apple.developer.family-controls entitlement to both the main app and extension targets Add a shared App Group entitlement to both targets In the main app, call: let center = DeviceActivityCenter() center.stopMonitoring([.myActivity]) let schedule = DeviceActivitySchedule( intervalStart: DateComponents(hour: 17, minute: 30), intervalEnd: DateComponents(hour: 17, minute: 45), repeats: true ) try center.startMonitoring(.myActivity, during: schedule) Verify registration succeeds: DeviceActivityCenter().activities.contains(.myActivity) returns true Background the app completely and wait for the intervalStart time (5:30 PM in this example) Expected Result: intervalDidStart(fo
Topic: App & System Services SubTopic: General Tags:
3
0
157
3d
Reply to Choosing Minimum Deployment Targets
Would it make sense for Apple to change the default iOS 17 minimum deployment target to 17.5 since that it the newest version with a simulator available? Or is there any reason that it would make sense for Apple to release and iOS 17.6 or 17.7 simulator? Should I submit a Feedback Assistant report?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
4d
UI Glitch in Toolbar Menu Picker After Migrating to Xcode 26
I am experiencing a UI issue after migrating my app from Xcode 16 to Xcode 26. In my implementation, I have a toolbar that contains multiple buttons along with a dropdown menu. The hierarchy for dropdown is as follows: **Toolbar → ToolbarItem → View → Menu → Picker ** Prior to Xcode 26, this setup worked smoothly in production builds. The dropdown (Menu + Picker) behaves as expected, and selecting a value triggers loading a dataset containing thousands of records on the screen. However, after upgrading to Xcode 26, I am observing an animation glitch when dismissing the dropdown after a selection is made. Specifically, the dropdown briefly shows a “capsule-like” animation artifact during dismissal, which persists for a few seconds. This visual issue is noticeable and negatively impacts the perceived performance and user experience of the app. This issue is occurring in an already released app built with Xcode 26. Questions: Is this a known issue or regression in Xcode 26 / SwiftUI Menu or Picker compo
Topic: Developer Tools & Services SubTopic: Xcode Tags:
Replies
1
Boosts
0
Views
38
Activity
2d
How to manually install iOS 26 Simulator download archive?
For difficult reasons I won’t get into, I ended up manually downloading the latest iOS 26 simulator runtime. I now have a file named 78756498-8AB4-4E5A-986C-7AA435758657.aar copied to my Mac. How do I get this archive installed so Xcode 26 recognizes it as a proper simulator runtime component? All searching I‘ve done for manually installing simulators references dmg files and older versions of Xcode. There’s no mention of aar files. When I tried the command: sudo xcrun simctl runtime add ./78756498-8AB4-4E5A-986C-7AA435758657.aar I get the result: An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=22): Error while creating AEA backend Invalid argument I tried to use Archive Utility to open the file but that just says it is unable to expand the file. I even tried renaming the file with a dmg extension and then tried mounting the file and I get the same “AEA backend” error. My Mac doesn’t have sufficient Internet access to let me download and install this normally through
Topic: Developer Tools & Services SubTopic: Xcode Tags:
Replies
4
Boosts
0
Views
752
Activity
2d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Thanks for the update. Just to clarify: Starting from April we must use Xcode 26.X to upload apps to the App Store (using older Xcode versions will fail). In addition, Xcode 26.X deployment target is iOS 15+. So, no option to release apps targeted to older iOS versions? If this is the case, why this isn't blocked during the Xcode build process? or even during the App Store processing? Also, what about the apps we already published a week ago with target deployment 12.0?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
Replies
Boosts
Views
Activity
2d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Thank you for the reply, but according to the requirements on this link https://developer.apple.com/cn/app-store/submitting/, starting from April 2026, apps uploaded to App Store Connect must use iOS 26 SDK, which means Xcode 26 is also required. This seems contradictory to resolving the current issue. Could you provide the specific reason for the aforementioned problem? Why could the ipa compiled with Xcode 26 a week ago be installed, run, and used on an iPhone 6 12.5.8?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
Replies
Boosts
Views
Activity
2d
DeviceActivityMonitor extension rejected by App Store Connect validator — NSExtensionPointIdentifier "com.apple.deviceactivity.monitor" invalid (IrisAPI -19241)
Hi everyone, I'm building an iOS app that uses a DeviceActivityMonitor app extension as part of the Screen Time / Family Controls API. Every time I try to upload my IPA to App Store Connect, the validation fails with this error: Invalid Info.plist value. The value of the NSExtensionPointIdentifier key, com.apple.deviceactivity.monitor, in the Info.plist of 'Alexandria.app/PlugIns/AlexandriaActivityMonitor.appex' is invalid. Error Domain=IrisAPI Code=-19241, iris-code=STATE_ERROR.VALIDATION_ERROR What I have verified (everything looks correct): NSExtensionPointIdentifier = com.apple.deviceactivity.monitor NSExtensionPrincipalClass = AlexandriaActivityMonitor.AlexandriaActivityMonitorExtension (correctly resolved in the compiled binary, verified with plutil -p) The Swift class correctly subclasses DeviceActivityMonitor CFBundleShortVersionString matches the main app Both the main app and extension provisioning profiles explicitly contain com.apple.developer.family-controls = true (verified by inspectin
Topic: App & System Services SubTopic: General Tags:
Replies
3
Boosts
0
Views
139
Activity
3d
UIView + CATiledLayer + SwiftUI Hosting + iOS 26 = Crash?
Our app uses a UIView backed by a CATiledLayer that is embedded in a UIScrollView, to represent a large document viewer. (PDF data, actually.) It needs to be big - far too big to allocate a single layer, and it needs to be able to reveal more detail as you zoom in. This is the exact use case for a CATiledLayer. CATiledLayer does its drawing on a background thread, as you know, and we've always taken care to make our draw method thread-safe. It has worked great for us, for over a decade now. However, starting with iOS 26, we've been having some surprising crashes. It looks like our CATiledLayer (I think?) is trying to trigger a layout on the background thread as well. This is frustrating because it doesn't have any subviews or sublayers - there's no reason for it. I'm suspecting the CATiledLayer because it does its drawing on a thread, so maybe it would also do other things there, but honestly, I'm not sure - it's hard to tell. Here's the crash. Normally with a crash like this, the solution is to boun
Topic: UI Frameworks SubTopic: UIKit
Replies
2
Boosts
0
Views
161
Activity
3d
Screen Time APIs showing severe inconsistencies (DeviceActivity not firing + impossible usage data)
Hi everyone, I’m the developer of one sec, an app used by a large number of users globally to reduce time spent on social media and to build healthier digital habits. Because of this, we rely heavily on Apple’s Screen Time / DeviceActivity / FamilyControls, ManagedSettings APIs – and unfortunately, we’re seeing increasingly severe issues in production that directly impact hundreds of thousands of real iOS users. During the past years, we have been busy filing dozens of feedback requests for different Screen Time issues – and there has been no response from Apple at all. Developer Relations might be able to confirm that the bugs are present and that they ended up with the right team – but they are never addressed, neither are workarounds provided. Instead, the situation gets worse and worse. iOS 26 introduced a series of heavy regressions (which have been reported via Apple’s official bug report tool Feedback Assistant on iOS 26 beta 1 in June 2025 – and have not been addressed 10 Mo
Topic: App & System Services SubTopic: General Tags:
Replies
1
Boosts
0
Views
208
Activity
3d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Thank you for the post. I recommend reviewing the Xcode system requirements for the target listed below. Link to Xcode System Requirements The device support section will provide you with the supported iOS versions. You can view all the versions of Xcode by expanding the “Other Xcode versions” tab. Enables the download of the Xcode version tailored to the desired iOS platform, accessible directly from the developer’s website. Albert
  Worldwide Developer Relations.
Topic: Developer Tools & Services SubTopic: Xcode Tags:
Replies
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Views
Activity
3d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
Had a similar issue, a week ago it was fine, even appstore downloaded dosent support iPhone6 on iOS 12.5.8, Hope to see apple fix this asap.
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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Activity
3d
Reply to iOS 26.2 RC DeviceActivityMonitor.eventDidReachThreshold regression?
unfortunately, iOS 26.4 (final version) also has the bug that's iOS 26.2, iOS 26.3 and iOS 26.4 (3-4 months) of limits automatically activating most mornings without reaching the limit, and this also affects the default Apple Screen Time
Topic: App & System Services SubTopic: General Tags:
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3d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
We are experiencing similar issues on an iPad Air running iOS 12.5.8. Building with Xcode 26.4 causes our app deployment from TestFlight to crash on startup without any logs. The same app with minor code changes was built a week ago with Xcode 26.3 and deployment from TestFlight was successful on the same iPad.
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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Activity
3d
Reply to AlarmKit alarm occasionally fires at exactly 12:00 AM
Hi SeoulForest and everyone, I’m joining this thread to share additional information regarding the reported issues with AlarmKit. While I don’t have a solution yet, I have both received user reports and personally experienced the same or similar behavior. The occurrence is rare (about once a month), but it happens consistently enough to be a reliability concern for an alarm-based feature. My Implementation Context: I have implemented a system that schedules approximately 60 fixed-schedule alarms. The Issue: Alarms occasionally fail to trigger at the scheduled time. Comparison: I set Local Notifications using the exact same date objects. These notifications arrive perfectly on time, which confirms there are no errors in the date/time logic itself. Observed Behaviors: Delayed Triggers: Alarms sometimes fire several minutes late, or in some cases, not at all for a long period. Midnight Firing: I have observed instances where an alarm that failed to trigger at its scheduled time would suddenly fire around midnigh
Topic: App & System Services SubTopic: General Tags:
Replies
Boosts
Views
Activity
3d
DeviceActivityMonitor extension intervalDidStart never called on iOS 26.3.1
On iOS 26.3.1, deviceactivityd produces zero log output and never wakes a DeviceActivityMonitor extension at the scheduled time, even when the schedule is successfully registered. The extension's intervalDidStart(for:) method is never called. Steps to Reproduce: Create an app with a DeviceActivityMonitor extension subclass Add the com.apple.developer.family-controls entitlement to both the main app and extension targets Add a shared App Group entitlement to both targets In the main app, call: let center = DeviceActivityCenter() center.stopMonitoring([.myActivity]) let schedule = DeviceActivitySchedule( intervalStart: DateComponents(hour: 17, minute: 30), intervalEnd: DateComponents(hour: 17, minute: 45), repeats: true ) try center.startMonitoring(.myActivity, during: schedule) Verify registration succeeds: DeviceActivityCenter().activities.contains(.myActivity) returns true Background the app completely and wait for the intervalStart time (5:30 PM in this example) Expected Result: intervalDidStart(fo
Topic: App & System Services SubTopic: General Tags:
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3
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0
Views
157
Activity
3d
Reply to iCloud Sync not working with iPhone, works fine for Mac.
I'm experiencing exactly the same issue since upgrading to iOS 26.4 with the same code, and it's also blocking Live Activities updates. I'm also having issues on tvOS 26.4, which uses CKSyncEngine.
Topic: App & System Services SubTopic: iCloud & Data Tags:
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4d
Reply to Choosing Minimum Deployment Targets
Would it make sense for Apple to change the default iOS 17 minimum deployment target to 17.5 since that it the newest version with a simulator available? Or is there any reason that it would make sense for Apple to release and iOS 17.6 or 17.7 simulator? Should I submit a Feedback Assistant report?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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4d