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“Visual Studio Maui IOS”

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Reply to No internet after reboot for 90s
Thanks for bringing this to the forums. [quote='821286021, vpoinot, /thread/821286, /profile/vpoinot'] But would you be aware of a reason that would explain the delay observed by these customers? [/quote] No. And the fact that this only happens at specific sites makes it hard to offer useful insight. What I can do is suggest a path for investigating this. IMPORTANT I’m gonna assume you’re familiar with the system log. If not, read Your Friend the System Log. I’m also going to suggest an approach that’s kinda like the one I outlined in Using a Sysdiagnose Log to Debug a Hard-to-Reproduce Problem, so you might want to read that for more background. The canonical tool for investigating issues like this is a sysdiagnose log. In a case like this that’s only going to work if you have a customer who is reasonably technically savvy and willing to help you debug. A further complication is that NE content filter data providers can’t log to the system log when signed for distribution. They can only add stuff to the syst
Topic: App & System Services SubTopic: Networking Tags:
1d
`NEProxySettings.matchDomains` / `exceptionList` not working as expected in `NEPacketTunnelProvider` (domain-scoped proxy not applied, and exceptions not bypassed)
I’m working on an iOS Network Extension where a NEPacketTunnelProviderconfigures a local HTTP/HTTPS proxy usingNEPacketTunnelNetworkSettings.proxySettings. Per NEProxySettings.exceptionList docs: If the destination host name of an HTTP connection matches one of these patterns then the proxy settings will not be used for the connection. However, I’m seeing two distinct issues: Issue A (exception bypass not working): HTTPS traffic to a host that matches exceptionList still reaches the proxy. Issue B (domain-scoped proxy not applied): When matchDomains is set to match a specific domain (example: [googlevideo.com]), I still observe its traffic in some apps is not proxied. If I remove the domain from matchDomains, the same traffic is proxied. Environment OS: iOS (reproduced with 26.4 and other versions) Devices: Reproduced with several iPhones (likely iPads as well) Xcode: 26.3 Extension: NEPacketTunnelProvider Minimal Repro (code) This is the minimal configuration. Toggle between CONFIG A / CONF
Topic: App & System Services SubTopic: Networking Tags:
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54
1d
iCloud Sync not working with iPhone, works fine for Mac.
I've been working on an app. It uses iCloud syncing. 48 hours ago everything was working 100%. Make a change on the iPhone it immediately changed on the Mac. Change on the Mac, it immediately changed on the iPhone. I didn't work on it yesterday. I updated to iOS26.4 on the iPhone and 26.4 on the Mac yesterday instead. Today, I pull up the project again. I made NO changes to the code or settings. Make a change on the iPhone it immediately updates on the Mac. Make a change on the Mac, nothing happens on the iPhone. I've waited an hour, and the change never happens. If you leave the iPhone app, then return, it updates as it should. It appears that iCloud's silent notification is to being received by the iPhone. Anyone else having the issue? Is there something new with iOS 26.4 that needs to be adjusted to get this to work? Again, works flawlessly with the Mac, just not with the iPhone.
Topic: App & System Services SubTopic: iCloud & Data Tags:
30
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4.8k
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Reply to UIApplication.canOpenURL not working without Safari
I'm dealing with the same issue as OP. Starting iOS 26.2, after uninstalling Safari the canOpenUrl-function returns false while it's possible to call the open method. I don't see why I should start a new post thread because it's exactly the same issue as mentioned in this post. It's so easy to reproduce... guard let url = URL(string: https://www.apple.com) else { return } if UIApplication.shared.canOpenURL(url) { UIApplication.shared.open(url) } else { print(Could not open URL) }
Topic: UI Frameworks SubTopic: UIKit
19h
X button disappeared on iPadOS 26.4 in MFMailComposeViewController
I’m using MFMailComposeViewController to send emails from my app. Since updating to iPadOS 26.4, there is no way to cancel the mail composer because the “X” button in the top-left corner has disappeared. On iPhone with iOS 26.4, everything still seems to work as expected. Is this a known issue, or am I missing something? Has anyone else experienced this, or found a workaround?
Topic: UI Frameworks SubTopic: UIKit
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128
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Reply to iOS 12.5.8 fails to bootstrap app
Addendum: I’ve created a simple minimal UIKit app that produces the same bootstrap error on the iPhone 5s with iOS 12.5.8. Launch storyboard shows, then suddenly disappears. The project is configured for automatically managed signing. My provisioning team profile expires in 11 months, my dev certificate in Oct 2026, and all other items in the details have checkmarks.
Topic: App & System Services SubTopic: General Tags:
1d
CoreML MLE5ProgramLibrary AOT recompilation hangs/crashes on iOS 26.4 — C++ exception in espresso IR compiler bypasses Swift error handling
Area: CoreML / Machine Learning Describe the issue: On iOS 26.4, calling MLModel(contentsOf:configuration:) to load an .mlpackage model hangs indefinitely and eventually kills the app via watchdog. The same model loads and runs inference successfully in under 1 second on iOS 26.3.1. The hang occurs inside eort_eo_compiler_compile_from_ir_program (espresso) during on-device AOT recompilation triggered by MLE5ProgramLibraryOnDeviceAOTCompilationImpl createProgramLibraryHandleWithRespecialization:error:. A C++ exception (__cxa_throw) is thrown inside libBNNS.dylib during the exception unwind, which then hangs inside __cxxabiv1::dyn_cast_slow and __class_type_info::search_below_dst. Swift's try/catch does not catch this — the exception originates in C++ and the process hangs rather than terminating cleanly. Setting config.computeUnits = .cpuOnly does not resolve the issue. MLE5ProgramLibrary initialises as shared infrastructure regardless of compute units. Steps to reproduce: Create an app with
Topic: Machine Learning & AI SubTopic: Core ML Tags:
2
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364
1d
TESTFLIGHT: The requested app is not available or doesn t exist
Hello, I created an app using the latest version of Xcode (16.2), and I'm having a problem testing this app on my iPhones. I created this app just like all the others I've made for my clients, including one on (03/24/25), but when I went to upload another App to App Store Connect on (03/26/25) I couldn't test it on my phone. Points to consider: The app runs perfectly on the Emulator. All my terms and agreements with Apple are up to date. I tried to download the apps through Testflight on 2 different devices, iPhone 7 Plus (iOS 15.8.1) and iPhone 15 Pro Max (iOS 18.3.2), and I was unsuccessful in neither attempt. I can send my app to the internal testers, but when I click download, the following message appears: Could not install [APP NAME]. The requested App is not available or doesn't exist. I imagine this problem is with Apple itself, I have already contacted support, but I need to resolve this urgently for my customers. Has anyone experienced this and resolved it?
Topic: App Store Distribution & Marketing SubTopic: TestFlight Tags:
16
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1.1k
1d
Core Spotlight Semantic Search - still non-functional for 1+ year after WWDC24?
After more than a year since the announcement, I'm still unable to get this feature working properly and wondering if there are known issues or missing implementation details. Current Setup: Device: iPhone 16 Pro Max iOS: 26 beta 3 Development: Tested on both Xcode 16 and Xcode 26 Implementation: Following the official documentation examples The Problem: Semantic search simply doesn't work. Lexical search functions normally, but enabling semantic search produces identical results to having it disabled. It's as if the feature isn't actually processing. Error Output (Xcode 26): [QPNLU][qid=5] Error Domain=com.apple.SpotlightEmbedding.EmbeddingModelError Code=-8007 Text embedding generation timeout (timeout=100ms) [CSUserQuery][qid=5] got a nil / empty embedding data dictionary [CSUserQuery][qid=5] semanticQuery failed to generate, using (false) In Xcode 16, there are no error messages at all - the semantic search just silently fails. Missing Resources: The sample application mentioned during the WWDC24
Topic: Machine Learning & AI SubTopic: Apple Intelligence Tags:
4
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1.6k
1d
Reply to XCode 16 and iOS 12 support
I’ve managed to run the Xcode 26.4 debugger with an app on an old iPhone 5s running 12.5.8 (though it failed for a different reason). The trick was to install a developer disk image for iOS 12.4. Since Xcode does not grab it from the old iPhone I found it on GitHub where someone collected these old images. You need to copy the dmg and signature to /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport . Good luck.
Topic: App Store Distribution & Marketing SubTopic: General
1d
Reply to TestFlight build crashes from fetch descriptor
Did you test with the latest public release (iOS 26.4 and friends)? If the issue is still there, I’d suggest that you file a feedback report and share your report ID here. For a workaround, you can probably try the following: static func fetchDescriptor(nameStartingWith prefix: String) -> FetchDescriptor { let predicate = #Predicate { $0 is ColorAsset && $0.name.starts(with: prefix) } return FetchDescriptor(predicate: predicate) ... } Best, —— Ziqiao Chen  Worldwide Developer Relations.
Topic: App & System Services SubTopic: iCloud & Data Tags:
1d
Reply to No internet after reboot for 90s
Thanks for bringing this to the forums. [quote='821286021, vpoinot, /thread/821286, /profile/vpoinot'] But would you be aware of a reason that would explain the delay observed by these customers? [/quote] No. And the fact that this only happens at specific sites makes it hard to offer useful insight. What I can do is suggest a path for investigating this. IMPORTANT I’m gonna assume you’re familiar with the system log. If not, read Your Friend the System Log. I’m also going to suggest an approach that’s kinda like the one I outlined in Using a Sysdiagnose Log to Debug a Hard-to-Reproduce Problem, so you might want to read that for more background. The canonical tool for investigating issues like this is a sysdiagnose log. In a case like this that’s only going to work if you have a customer who is reasonably technically savvy and willing to help you debug. A further complication is that NE content filter data providers can’t log to the system log when signed for distribution. They can only add stuff to the syst
Topic: App & System Services SubTopic: Networking Tags:
Replies
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Views
Activity
1d
`NEProxySettings.matchDomains` / `exceptionList` not working as expected in `NEPacketTunnelProvider` (domain-scoped proxy not applied, and exceptions not bypassed)
I’m working on an iOS Network Extension where a NEPacketTunnelProviderconfigures a local HTTP/HTTPS proxy usingNEPacketTunnelNetworkSettings.proxySettings. Per NEProxySettings.exceptionList docs: If the destination host name of an HTTP connection matches one of these patterns then the proxy settings will not be used for the connection. However, I’m seeing two distinct issues: Issue A (exception bypass not working): HTTPS traffic to a host that matches exceptionList still reaches the proxy. Issue B (domain-scoped proxy not applied): When matchDomains is set to match a specific domain (example: [googlevideo.com]), I still observe its traffic in some apps is not proxied. If I remove the domain from matchDomains, the same traffic is proxied. Environment OS: iOS (reproduced with 26.4 and other versions) Devices: Reproduced with several iPhones (likely iPads as well) Xcode: 26.3 Extension: NEPacketTunnelProvider Minimal Repro (code) This is the minimal configuration. Toggle between CONFIG A / CONF
Topic: App & System Services SubTopic: Networking Tags:
Replies
1
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0
Views
54
Activity
1d
iCloud Sync not working with iPhone, works fine for Mac.
I've been working on an app. It uses iCloud syncing. 48 hours ago everything was working 100%. Make a change on the iPhone it immediately changed on the Mac. Change on the Mac, it immediately changed on the iPhone. I didn't work on it yesterday. I updated to iOS26.4 on the iPhone and 26.4 on the Mac yesterday instead. Today, I pull up the project again. I made NO changes to the code or settings. Make a change on the iPhone it immediately updates on the Mac. Make a change on the Mac, nothing happens on the iPhone. I've waited an hour, and the change never happens. If you leave the iPhone app, then return, it updates as it should. It appears that iCloud's silent notification is to being received by the iPhone. Anyone else having the issue? Is there something new with iOS 26.4 that needs to be adjusted to get this to work? Again, works flawlessly with the Mac, just not with the iPhone.
Topic: App & System Services SubTopic: iCloud & Data Tags:
Replies
30
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0
Views
4.8k
Activity
1d
Reply to iCloud Sync not working with iPhone, works fine for Mac.
Tested my app which uses CloudKit automatic configuration. The data will sync correctly on iOS 26.5 beta 1 now. Hope Apple will push an update for 26.4.1 soon.
Topic: App & System Services SubTopic: iCloud & Data Tags:
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1d
Reply to ‌Xcode26-built apps cannot run on iPhone 6 or earlier devices‌
We work hard to keep our application available to older devices, just to get the rug pulled from under our feet... Please restore the ability to launch on iOS 12: this was working perfectly well less than a month ago with Xcode 26...
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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19h
Reply to How to change TabView background color with SwiftUI?
This no longer works for the iOS 26 Tab Bar, any suggestions?
Topic: UI Frameworks SubTopic: SwiftUI Tags:
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1d
Reply to UIApplication.canOpenURL not working without Safari
I'm dealing with the same issue as OP. Starting iOS 26.2, after uninstalling Safari the canOpenUrl-function returns false while it's possible to call the open method. I don't see why I should start a new post thread because it's exactly the same issue as mentioned in this post. It's so easy to reproduce... guard let url = URL(string: https://www.apple.com) else { return } if UIApplication.shared.canOpenURL(url) { UIApplication.shared.open(url) } else { print(Could not open URL) }
Topic: UI Frameworks SubTopic: UIKit
Replies
Boosts
Views
Activity
19h
X button disappeared on iPadOS 26.4 in MFMailComposeViewController
I’m using MFMailComposeViewController to send emails from my app. Since updating to iPadOS 26.4, there is no way to cancel the mail composer because the “X” button in the top-left corner has disappeared. On iPhone with iOS 26.4, everything still seems to work as expected. Is this a known issue, or am I missing something? Has anyone else experienced this, or found a workaround?
Topic: UI Frameworks SubTopic: UIKit
Replies
2
Boosts
0
Views
128
Activity
1d
Reply to iOS 12.5.8 fails to bootstrap app
Addendum: I’ve created a simple minimal UIKit app that produces the same bootstrap error on the iPhone 5s with iOS 12.5.8. Launch storyboard shows, then suddenly disappears. The project is configured for automatically managed signing. My provisioning team profile expires in 11 months, my dev certificate in Oct 2026, and all other items in the details have checkmarks.
Topic: App & System Services SubTopic: General Tags:
Replies
Boosts
Views
Activity
1d
CoreML MLE5ProgramLibrary AOT recompilation hangs/crashes on iOS 26.4 — C++ exception in espresso IR compiler bypasses Swift error handling
Area: CoreML / Machine Learning Describe the issue: On iOS 26.4, calling MLModel(contentsOf:configuration:) to load an .mlpackage model hangs indefinitely and eventually kills the app via watchdog. The same model loads and runs inference successfully in under 1 second on iOS 26.3.1. The hang occurs inside eort_eo_compiler_compile_from_ir_program (espresso) during on-device AOT recompilation triggered by MLE5ProgramLibraryOnDeviceAOTCompilationImpl createProgramLibraryHandleWithRespecialization:error:. A C++ exception (__cxa_throw) is thrown inside libBNNS.dylib during the exception unwind, which then hangs inside __cxxabiv1::dyn_cast_slow and __class_type_info::search_below_dst. Swift's try/catch does not catch this — the exception originates in C++ and the process hangs rather than terminating cleanly. Setting config.computeUnits = .cpuOnly does not resolve the issue. MLE5ProgramLibrary initialises as shared infrastructure regardless of compute units. Steps to reproduce: Create an app with
Topic: Machine Learning & AI SubTopic: Core ML Tags:
Replies
2
Boosts
0
Views
364
Activity
1d
TESTFLIGHT: The requested app is not available or doesn t exist
Hello, I created an app using the latest version of Xcode (16.2), and I'm having a problem testing this app on my iPhones. I created this app just like all the others I've made for my clients, including one on (03/24/25), but when I went to upload another App to App Store Connect on (03/26/25) I couldn't test it on my phone. Points to consider: The app runs perfectly on the Emulator. All my terms and agreements with Apple are up to date. I tried to download the apps through Testflight on 2 different devices, iPhone 7 Plus (iOS 15.8.1) and iPhone 15 Pro Max (iOS 18.3.2), and I was unsuccessful in neither attempt. I can send my app to the internal testers, but when I click download, the following message appears: Could not install [APP NAME]. The requested App is not available or doesn't exist. I imagine this problem is with Apple itself, I have already contacted support, but I need to resolve this urgently for my customers. Has anyone experienced this and resolved it?
Topic: App Store Distribution & Marketing SubTopic: TestFlight Tags:
Replies
16
Boosts
0
Views
1.1k
Activity
1d
Core Spotlight Semantic Search - still non-functional for 1+ year after WWDC24?
After more than a year since the announcement, I'm still unable to get this feature working properly and wondering if there are known issues or missing implementation details. Current Setup: Device: iPhone 16 Pro Max iOS: 26 beta 3 Development: Tested on both Xcode 16 and Xcode 26 Implementation: Following the official documentation examples The Problem: Semantic search simply doesn't work. Lexical search functions normally, but enabling semantic search produces identical results to having it disabled. It's as if the feature isn't actually processing. Error Output (Xcode 26): [QPNLU][qid=5] Error Domain=com.apple.SpotlightEmbedding.EmbeddingModelError Code=-8007 Text embedding generation timeout (timeout=100ms) [CSUserQuery][qid=5] got a nil / empty embedding data dictionary [CSUserQuery][qid=5] semanticQuery failed to generate, using (false) In Xcode 16, there are no error messages at all - the semantic search just silently fails. Missing Resources: The sample application mentioned during the WWDC24
Topic: Machine Learning & AI SubTopic: Apple Intelligence Tags:
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4
Boosts
0
Views
1.6k
Activity
1d
XCode 16 and iOS 12 support
Checking other posts iOS 12 should still be supported but the having upgraded an App in App Store it will not run on iOS 12 devices. Is there a trick to building for iOS12 support or has the goal post moved to iOS 15 which I find in specs for XCode
Topic: App Store Distribution & Marketing SubTopic: General
Replies
2
Boosts
0
Views
228
Activity
1d
Reply to XCode 16 and iOS 12 support
I’ve managed to run the Xcode 26.4 debugger with an app on an old iPhone 5s running 12.5.8 (though it failed for a different reason). The trick was to install a developer disk image for iOS 12.4. Since Xcode does not grab it from the old iPhone I found it on GitHub where someone collected these old images. You need to copy the dmg and signature to /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport . Good luck.
Topic: App Store Distribution & Marketing SubTopic: General
Replies
Boosts
Views
Activity
1d
Reply to TestFlight build crashes from fetch descriptor
Did you test with the latest public release (iOS 26.4 and friends)? If the issue is still there, I’d suggest that you file a feedback report and share your report ID here. For a workaround, you can probably try the following: static func fetchDescriptor(nameStartingWith prefix: String) -> FetchDescriptor { let predicate = #Predicate { $0 is ColorAsset && $0.name.starts(with: prefix) } return FetchDescriptor(predicate: predicate) ... } Best, —— Ziqiao Chen  Worldwide Developer Relations.
Topic: App & System Services SubTopic: iCloud & Data Tags:
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1d