Delve into the world of built-in app and system services available to developers. Discuss leveraging these services to enhance your app's functionality and user experience.

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Browser for TV OS
I recently tried Apple TV after using android tv for a long time. The main missing item is having a browser. I could not find one. i tried building Firefox for TVOS, it failed with WebKit not available. Is there a way to build WebKit and package it along with a browser package while building it?
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621
Dec ’24
Unblocking Apps After a Scheduled Duration in FamilyControl
I am able to block apps using FamilyControl and Shield. Unblocking is also simple—just assign nil to store.shield.applications. However, I want to unblock them even when the app is not open. Use case: Let's say the app allows users to create a session where a particular app is blocked for a specific duration. Once the session starts, the app should remain blocked, and as soon as the session time ends, it should automatically be unblocked. Please help me with this. Thank you!
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408
Feb ’25
Can anyone help?
I recently used Open core legacy patcher to update my old 2012 Macbook pro to run a new pice of dj software. the update went smooth but now the Dj software wont open just gives me a crash report. Im totally stumped. the crash report. Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 4 Illegal instruction: 4 Terminating Process: exc handler [3839] Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 Engine DJ 0x10c9e3d81 0x10c28f000 + 7687553 1 dyld 0x7ff807632729 invocation function for block in dyld4::Loader::findAndRunAllInitializers(dyld4::RuntimeState&) const + 241 2 dyld 0x7ff80766b34e invocation function for block in dyld3::MachOAnalyzer::forEachInitializer(Diagnostics&, dyld3::MachOAnalyzer::VMAddrConverter const&, void (unsigned int) block_pointer, void const*) const + 133 3 dyld 0x7ff80765fb73 invocation function for block in dyld3::MachOFile::forEachSection(void (dyld3::MachOFile::SectionInfo const&, bool, bool&) block_pointer) const + 543 4 dyld 0x7ff80761a07b dyld3::MachOFile::forEachLoadCommand(Diagnostics&, void (load_command const*, bool&) block_pointer) const + 249 5 dyld 0x7ff80765ebe8 dyld3::MachOFile::forEachSection(void (dyld3::MachOFile::SectionInfo const&, bool, bool&) block_pointer) const + 176 6 dyld 0x7ff807661266 dyld3::MachOFile::forEachInitializerPointerSection(Diagnostics&, void (unsigned int, unsigned int, bool&) block_pointer) const + 116 7 dyld 0x7ff80766b084 dyld3::MachOAnalyzer::forEachInitializer(Diagnostics&, dyld3::MachOAnalyzer::VMAddrConverter const&, void (unsigned int) block_pointer, void const*) const + 390 8 dyld 0x7ff8076325c2 dyld4::Loader::findAndRunAllInitializers(dyld4::RuntimeState&) const + 150 9 dyld 0x7ff807638af7 dyld4::JustInTimeLoader::runInitializers(dyld4::RuntimeState&) const + 21 10 dyld 0x7ff807632928 dyld4::Loader::runInitializersBottomUp(dyld4::RuntimeState&, dyld3::Array<dyld4::Loader const*>&, dyld3::Array<dyld4::Loader const*>&) const + 276 11 dyld 0x7ff807636141 dyld4::Loader::runInitializersBottomUpPlusUpwardLinks(dyld4::RuntimeState&) const::$_0::operator()() const + 147 12 dyld 0x7ff8076329bc dyld4::Loader::runInitializersBottomUpPlusUpwardLinks(dyld4::RuntimeState&) const + 90 13 dyld 0x7ff80764e1f7 dyld4::APIs::runAllInitializersForMain() + 277 14 dyld 0x7ff80761f52e dyld4::prepare(dyld4::APIs&, dyld3::MachOAnalyzer const*) + 3433 15 dyld 0x7ff80761e792 dyld4::start(dyld4::KernelArgs*, void*, void*)::$_0::operator()() const + 572 16 dyld 0x7ff80761e27f start + 1727 Thread 1: 0 libsystem_pthread.dylib 0x7ff8079a8bcc start_wqthread + 0 Thread 2: 0 libsystem_pthread.dylib 0x7ff8079a8bcc start_wqthread + 0 Thread 0 crashed with X86 Thread State (64-bit): rax: 0x00006000012acc80 rbx: 0x00006000032b3c90 rcx: 0x00006000012acd00 rdx: 0x000000011008e000 rdi: 0x0000000000000000 rsi: 0x00006000012ac000 rbp: 0x00007ff7b3c5a9f0 rsp: 0x00007ff7b3c5a9c0 r8: 0x0000000000000002 r9: 0x000000000000001b r10: 0x00000000001ff800 r11: 0x0000000000000080 r12: 0x000000010eeae278 r13: 0x000000010c28f6e8 r14: 0x00007ff84a461050 r15: 0x00007ff84a4614a0 rip: 0x000000010c9e3d81 rfl: 0x0000000000010207 cr2: 0x0000000000000000 Logical CPU: 2 Error Code: 0x00000000 Trap Number: 6
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181
Dec ’24
Siri Shortcuts Response Templates No work on iOS18.1.1
I have shortcuts up and running and I have my custom response added to my completion handler since day1. Recently I upgraded to iOS18, and found out the app I develop can not display the custom response. I test the app on iOS17.6, the display of custom response is no problem. The situation is exactly like the problem posted on 2018: https://forums.developer.apple.com/forums/thread/109324 Can anyone help me or have the same bugs? Thank you so much! Happy 2025
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443
Jan ’25
Error while validating the mobile app
The errors below pop up when I validate or distribute the mobile app; this error happens with the upgraded Xcode version. I have Xcode 16.2, and the minimum target deployment is 14.0. Please help me to resolve these errors. build was successful, I can launch my application from the simulator Validation failed Invalid Bundle. The bundle .app/Frameworks/hermes.framework does not support the minimum OS Version specified in the Info.plist. (ID: ee79350d-249e-4101-89fe-e41b2620f4d6) Validation failed Missing Info.plist value. A value for the key 'MinimumOSVersion' in bundle .app/Frameworks/hermes.framework is required. (ID: b0f58cd5-2c72-437b-98c9-1b2b4122c203) Validation failed Invalid MinimumOSVersion. Apps that only support 64-bit devices must specify a deployment target of 8.0 or later. MinimumOSVersion in ‘.app/Frameworks/hermes.framework' is ''. (ID: c2a6247f-21d6-438f-b52f-572425b7aa65)
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311
Feb ’25
TransferRepresentation, AppEntities and AppIntents
Hi, I am trying to understand how this mechanism integrates with shortcuts (and i guess siri + apple intelligence in near future) and other apps. Basic setup is an AppEntity that implements 'transferable' and is returning a DataRepresentation of 'text'. got an AppIntent returns a one of the 'entitities' and I'm simply trying to pass the result to initially email or another app using shortcuts. even with canned 'hello world' string being marshalled into DataRepresentation(.text) I am not seeing anything in usual system targets like email, messages, notes. It opens the app ok, but no text is present. (note: if I use an incorrect DataRepresentation type with email it'll flat out fail saying 'not correct 'text' type) What exactly do I need to do here and is there any example code I can look at? thanks
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363
Feb ’25
How can I stop CPNavigationSession properly on CarPlay disconnect
Hi there, I'm facing an issue when disconnecting CarPlay that the navigation session seems to be in some weird state where it is not properly finished. So when I reconnect CarPlay the "Metadata in instrument cluster or HUD" does not update anymore until I start another navigation session and stop that one. You can see that the instruction to the left on this screen recording is not updating anymore after a reconnect. https://www.youtube.com/watch?v=sncxyJULjQk I have a modified the CostalRoad sample app to add support for the HUD cluster and to auto start a navigation simulation when CarPlay connects. https://github.com/g4rb4g3/CoastalRoads Can anyone tell me what I have to do when CarPlay disconnect so I can start a new navigation session on reconnect that has a working HUD cluster? Fun fact is that Apple Maps handles this quite nice (https://www.youtube.com/watch?v=OpJEIyGcwdo), it somehow manages to finish the navigation session and brings up the HUD cluster just fine on reconnect. I wonder how I can achieve the same, anyone having an idea on that?
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258
Feb ’25
Using Flutter with CallKit
When using CallKit in my flutter app audio(both mic and speaker) stop working. When not using call kit to answer calls the app work fine. I am using the flutter flutter_callkit_incoming to use callkit and flutter_webrtc for the telephony. Flutter_callkit_incoming has some boilerplate code code include sections to uncomment when using webrtc and I have seen multiple fixes to suggest to make sure the to configure sharedAudioSession before the callkit is sent. Neither of this approaches seemed to have worked.
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414
Feb ’25
How to get the real app language code + variation?
Hello, I have the app localised to many languages and its variants, like English from Australia or Dutch from Belgium. My phone language is en_UK and the region is configured to ES. I cannot find a way to get the regional language code (ex: en_au, nl_be), it always gets simplified to the language (ex: en, nl), or adds my device region (ex: en-ES, nl-ES). Here I attach some examples while I have the app on en_au Locale.preferredLanguages ▿ 3 elements - 0 : "en-ES" - 1 : "ca-ES" - 2 : "es-ES" Bundle.main.preferredLocalizations ▿ 1 element - 0 : "en" NSLocale.current.languageCode ▿ Optional&lt;String&gt; - some : "en" Locale.current ▿ en_001@rg=eszzzz (fixed en_001@rg=eszzzz) - identifier : "en_001@rg=eszzzz" - locale : "fixed en_001@rg=eszzzz" Locale.autoupdatingCurrent.languageCode ▿ Optional&lt;String&gt; - some : "en" Locale.current.languageCode ▿ Optional&lt;String&gt; - some : "en" Locale.preferredLanguages[0] "en-ES"
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1k
Jan ’25
detect FamilyControlsMember type without requesting authorization
I have an iOS app that installs a Content Filter in order to block certain types of content at the network/socket level. The Family Controls framework stipulates that this can only be done successfully on a FamilyControlsMember.child account type (or on a supervised device). Our initial release has been really successful, but I would say that perhaps 75% of our users are .individual (probably over 18). Perhaps a topic for another forum post is to discuss how Apple's policy here doesn't seem to be meeting a real need here for non-minors, but I'll leave that alone for now. The problem we're facing is that as far as I can tell, the only way to determine if someone has the right account type is to initiate an authorization request using AuthorizationCenter.shared.requestAuthorization(for:) and then inspect the error. I think it could really help the usability of the app if we could detect the account type and preemptively show a helpful message if the authorization could not succeed, and recommend some alternatives. But I've looked so far in vain for some way to do this. Is there any api in Family Controls (or elsewhere) that can query the system for this information? Any pointers would be greatly appreciated!
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264
Dec ’24
ScreenCaptureKit crashes on Mac Catalyst apps
I'm trying to use ScreenCaptureKit on a Mac Catalyst app, on macOS 12.5.1. I'm not sure if I'm doing something wrong, but it crashes as soon as I try to request SCShareableContent. It crashes on internal code, calling a method it can't find, which makes me think this is a bug in the framework rather than incorrect configuration. Any hints on how to work around this problem? The crash is: ** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[RPDaemonProxy fetchShareableContentWithOption:windowID:withCompletionHandler:]: unrecognized selector sent to instance 0x6000037d5dc0' terminating with uncaught exception of type NSException ScreenCaptureKit-Crash.txt
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2.4k
Feb ’25
Possible to access CoreData/Persistent storage from DeviceActivityReportExtension?
This is more a general question of whether it is possible to share persistent/coredata from the main app to Screentime-related extensions such as DeviceActivityReportExtension. I've set my code up (e.g., App Groups, files to different targets, using nspersistentcontainer with app group url, etc.) in a way that it builds, and the extension seems to recognize my CoreData schema (able to query using fetchrequest). But the data returned is always null. So i'm wondering if it is even possible to READ app data from the extension. I understand it is not possible to write or pass data from the extension back to the app. I've also been able to read data that was saved in main app from UserDefaults in my extension.
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442
Dec ’24
Contacts Framework Question
Hey, I would love to access the users Contact (ie. the Me Card) Apple recently released the Invites app and within this app you can find the users Contacts Photo. I tried to replicate this behaviour but I currently need to match based on a name or email or something else. I have no idea how to receive this data because when using the Invites app I only remember the app asking for Contacts permission and nothing else so far. let store = CNContactStore() let keysToFetch = [CNContactImageDataAvailableKey, CNContactImageDataKey, CNContactThumbnailImageDataKey] as [CNKeyDescriptor] let email = "test@test.de" let predicate = CNContact.predicateForContacts(matchingEmailAddress: email) do { let contacts = try store.unifiedContacts(matching: predicate, keysToFetch: keysToFetch) let imageDatas: [Data] = contacts.compactMap { $0.imageData } self.images = imageDatas.map { UIImage(data: $0) ?? UIImage() } } catch { print("Error fetching contacts: \(error)") } This is how I am retrieving the Image. MAYBE someone can help me out. Thank you so far ~ Flo
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344
Feb ’25
Sequoia - Messages not receiving after 7+ hrs of uptime
Issue: Using Messages in macOS Sequoia, I stop receiving any messages after 7+ hrs of the system being on. Troubleshooting: any messages sent to the target account doesn't show up when this issue occurs. I'm able to send messages from the target account which is received. only way to get it working is to reboot the computer but those messages sent never arrive to the target account even after reboot. upon reboot the behavior functions as expected. however the issue returns after 7hrs+ after reboot. logout and log back in when the system is in this state doesn't resolve the issue. only a reboot but the issues eventually returns. note the 7hrs+ is tested and is more accurately 7-10 hrs.
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396
Dec ’24
Pencilkit custom pen
I want to create a brush similar to a fountain pen, with a three-dimensional feel to the strokes and a distinct tip. Alternatively, is it possible to achieve this by modifying the configuration parameters of a fountain pen brush?
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55
Mar ’25
Critical SKAdNetwork Attribution
Subject/Title: Critical SKAdNetwork Attribution Failures (Bug Type: 237, Failure Type: 1201 in ASDErrorDomain) Issue Summary We are encountering repeated SKAdNetwork attribution failures (failureType: 1201 in ASDErrorDomain) for ad impression events processed through the ad network mj797d8u6f.skadnetwork. These failures are causing significant revenue losses, as ad impressions are not being properly attributed to installs. The issue occurs across multiple campaigns and involves both SKAdNetwork API 3.0 and 4.0, suggesting a systemic problem with attribution validation or network communication. This problem is critical as it disrupts advertisers’ ability to track conversions, optimize campaigns, and allocate budgets effectively. Technical Details Key Logs: Below are anonymized samples of the failed SKAdNetwork events: Log Sample 1 (Failure): { "bug_type": "237", "timestamp": "2025-01-07 22:49:15.00 -0500", "os_version": "iPhone OS 18.2.1 (22C161)", "roots_installed": 0, "incident_id": "78523BD9-1F58-4738-B526-8A8A63203214" } { "advertisementStoryId": "3D2E7EBB-1A57-4DF8-9375-2C465F423038", "apiVersion": "3.0", "eventType": "adImpression", "resultType": "finalized", "anonymous": true, "failureType": 1201, "failureDomain": "ASDErrorDomain", "clientEventId": "0F456623-584F-4913-BBD3-C3FD1219D104", "os": "iOS", "topic": "xp_amp_skad_perf", "adType": "app", "adNetworkId": "mj797d8u6f.skadnetwork", "eventTime": 1736305200000, "osBuildNumber": "22C161", "hardwareFamily": "iPhone", "api": "SKAdNetwork" } Log Sample 2 (Failure): { "bug_type": "237", "timestamp": "2025-01-07 22:49:15.00 -0500", "os_version": "iPhone OS 18.2.1 (22C161)", "roots_installed": 0, "incident_id": "0CBF612D-F0D9-449E-A34E-DE2DB92BEC0D" } { "advertisementStoryId": "946E568C-D2C1-478F-BFF3-4996C48F9B39", "apiVersion": "3.0", "eventType": "adImpression", "resultType": "finalized", "anonymous": true, "failureType": 1201, "failureDomain": "ASDErrorDomain", "clientEventId": "1A3D48FB-4452-4FD8-BB25-1195470A53DC", "os": "iOS", "topic": "xp_amp_skad_perf", "adType": "app", "adNetworkId": "mj797d8u6f.skadnetwork", "eventTime": 1736298000000, "osBuildNumber": "22C161", "hardwareFamily": "iPhone", "api": "SKAdNetwork" } Log Sample 3 (Success Example for Comparison): { "bug_type": "237", "timestamp": "2025-01-07 22:49:15.00 -0500", "os_version": "iPhone OS 18.2.1 (22C161)", "roots_installed": 0, "incident_id": "BFEAC86B-8195-4DB0-96FF-2028107256AD" } { "advertisementStoryId": "946E568C-D2C1-478F-BFF3-4996C48F9B39", "apiVersion": "3.0", "eventType": "adImpression", "resultType": "finalized", "anonymous": true, "clientEventId": "F6265488-E0FB-448A-A406-3F7254BCA9D7", "os": "iOS", "topic": "xp_amp_skad_perf", "adType": "app", "adNetworkId": "mj797d8u6f.skadnetwork", "eventTime": 1736294400000, "osBuildNumber": "22C161", "hardwareFamily": "iPhone", "api": "SKAdNetwork" } Failure Details: Failure Type: 1201 Failure Domain: ASDErrorDomain Ad Network ID: mj797d8u6f.skadnetwork API Versions Affected: 3.0, 4.0 Timeframe of Failures: All logs occur within 2025-01-07 22:00:00 UTC to 23:00:00 UTC. Environment: OS Version: iOS 18.2.1 (Build 22C161). Device Type: iPhone (hardwareFamily: iPhone). App Configuration: Includes the ad network ID in the Info.plist under SKAdNetworkItems. Impact Details Financial Loss: Based on failure rates, we estimate $20–$65/day per advertiser for small campaigns and $75–$375/day per advertiser for larger campaigns. If 100 advertisers are affected, daily losses range from $2,000–$37,500. Over a week, losses could exceed $70,000 to $262,500 or more. Operational Impact: Advertisers cannot track installs or optimize campaigns, leading to inefficient ad spending and potential budget reallocation to other networks. Damaged trust between advertisers and the ad network. Reputation Risk: Continued failures harm the credibility of the SKAdNetwork framework, critical in a post-ATT (App Tracking Transparency) ecosystem. Steps to Reproduce Serve an ad impression through the ad network mj797d8u6f.skadnetwork. Monitor SKAdNetwork attribution for that impression. Observe repeated failures (failureType: 1201) despite the resultType: finalized status. Recommendations for Investigation Attribution Timeout: Verify if these failures stem from delayed responses or missed attribution windows. Ad Network Configuration: Confirm the ad network’s integration complies with SKAdNetwork API 3.0 and 4.0 requirements. Infrastructure Review: Investigate potential bottlenecks or failures in Apple’s attribution servers (ASDErrorDomain) or communication delays. Contact Details Name: [Your Full Name] Role: [Your Role] (e.g., Ad Network Analyst/Developer) Organization: [Your Company Name] Email: [Your Email Address] Phone: [Your Phone Number] Submission Instructions You can submit this report via the following channels: Apple Feedback Assistant: https://feedbackassistant.apple.com/ Bug Reporting Tool: https://developer.apple.com/bug-reporting/ Apple DTS: https://developer.apple.com/support/technical/
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355
Jan ’25