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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App Store Review always got 4.3 for my apps
I created an app and submitted to app store for review and got a rejection with "4.3(a) - Design - Spam". This one was created for brand new, and I didn't find any similar apps in App store. I searched in this forum but am not sure if it is because I used flutter to build my app? How could I get a bit more specific detail why it got rejected? Guideline 4.3(a) - Design - Spam We noticed your app shares a similar binary, metadata, and/or concept as apps submitted to the App Store by other developers, with only minor differences. Submitting similar or repackaged apps is a form of spam that creates clutter and makes it difficult for users to discover new apps. Next Steps Since we do not accept spam apps on the App Store, we encourage you to review your app concept and submit a unique app with distinct content and functionality.
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315
Dec ’24
CarPlay Not Working Properly
I just purchased a new 2025 Honda Civic Hybrid sedan with the highest trim package. The staff at the dealership set CarPlay up to my iPhone 16 Pro, and all was operating perfectly. Then, last week, I started noticing random connectivity problems with it (ie: no sound from my audio apps, “not connected” being displayed on the dashboard displa, etc.) I tried to think of what had changed with my setup, and the only change was that I updated to the latest iOS update 18.2 I scheduled a service appointment with the Honda dealer in hopes that Apple and Honda can confirm a fix for this issue. I’ll try to attach an image from my car’s dashboard display as an example of an error message that isn’t resolved.
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Jan ’25
Hourly precipitation amounts seem drastically low
Hello. I took a closer look at the data I'm getting back for hourly forecasts and I'm baffled by results I'm seeing. For example, it's Dec 19, 2022 8:00am PT and I'm asking for the weather for Orchard Park NY (lat 42.766437 long -78.743855) for Dec 23, 2022. The daily forecast tells me they're expected to have 5.9" of snow. However, the hourly forecast with the most snow that day is reported as 0.071" (1.8mm). The Apple Weather app on iOS shows that hour as having 0.6". I wrote a 'for' loop to print the results of my call to WeatherService.shared.weather.         print(oneHour.precipitationAmount.formatted())         print(oneHour.precipitationAmount.description)         print(oneHour.precipitationAmount.unit)         print(oneHour.precipitationAmount.value) 0.071 in 1.8 mm <_NSStatic_NSUnitLength: 0x2010b0178> mm 1.8
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2.5k
Jan ’25
UIViewController.view.backgroundColor auto changed when present
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
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295
Jan ’25
SMJobSubmit works in user domain, but cannot be submitted in system domain
Hi, I'm in the process of creating an App + Helper Tool combo application, and depending on the necessity of root privileges, I'm setting up two paths in the app: If root privileges are not necessary, I'm using SMJobSubmit rather directly: var submissionError: Unmanaged<CFError>? let submissionResult = SMJobSubmit(kSMDomainUserLaunchd, plist, nil, &submissionError) where plist contains these items: Label=com.***.redactedApp.redacted, ProgramArguments=[path/to/helper-tool, commandName, commandArg1, commandArg2] RunAtLoad=1, KeepAlive=0 and it works as necessary, and performs the operations. Now, in the case of privilege escalation being necessary, this call becomes a bit more complex: let authorization = SFAuthorization() var authRef: AuthorizationRef? do { try authorization?.obtain(withRight: kSMRightModifySystemDaemons, flags: [.extendRights, .interactionAllowed]) authRef = authorization?.authorizationRef() } catch let error { // Logging error } var submissionError: Unmanaged<CFError>? let submissionResult = SMJobSubmit(kSMDomainSystemLaunchd, plist, authRef, &submissionError) while using the same plist, same executable at the same path, same Label. However, when using the second path, suddenly SMJobSubmit fails: Error Domain=CFErrorDomainLaunchd Code=2 "(null)" Now, naturally I headed over to system logs in Console.app, and this is the weirdest - there is nothing suspicious near the log item I submit with the above error from the main application. The tool is embedded in the Contents/MacOS folder. However, my problem is that anything that I can think of seems to lead to the same thought: it should be a problem in both cases, not just the privileged one. Is there something extra that must be taken care of when using SMJobSubmit with privileged helper tools?
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Jan ’25
Users occasionally experience system unresponsiveness and unexpected black screen restarts during meetings in our app
We have received user reports indicating that, while using our app for meetings, they occasionally encounter system unresponsiveness, ultimately leading to an unexpected black screen and system restart. Our app's internal logs show normal operation during these incidents. To assist in diagnosing the issue, we have collected system logs (WindowServer.ips) from affected users. We would appreciate your assistance in analyzing these logs to help identify the root cause of the problem. Thank you for your support and assistance.
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Jan ’25
When user opened my application, it crashed immediately. [Firebase crash report CFNetwork]
When user opened my application, it crashed immediately. This is crash log message from firebase. com.apple.CFNetwork.Connection EXC_BAD_ACCESS KERN_INVALID_ADDRESS After restarting iPhone, user can use my application without crash. I cannot reproduce this crash from other device. Here are .ips crash log that I changed to .txt. crashLog-2024-12-26-182447.txt crashLog-2024-12-26-182449.000.txt crashLog-2024-12-26-182535.000.txt crashLog-2024-12-26-182535.txt Do you have any idea to fix this?
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614
Jan ’25
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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Jan ’25
NSApplicationServices is invalid when uploading a TestFlight build
Hello, any one encounter the issue NSApplicationServices is invalid when uploading TestFlight build? We are facing an issue with our latest iOS build. For context, we are trying to add support for the apple watch connectivity with tvOS. After uploading our build, we get the following error: Invalid Info.plist key. The key 'NSApplicationServices' in bundle myapp.app/Watch/watch.app is invalid. However, the doc indicates that NSApplicationServices must be declared in the Info.plist file (source: https://developer.apple.com/documentation/devicediscoveryui/connecting_a_tvos_app_to_other_devices_over_the_local_network?changes=_1_7) Dev environment: Xcode v14.0 (14A309) to dev and archive Deployment target: watchOS 6.0 & iOS 13.0 Watch app project is separated as Watch App target and Watch App Extension target and not a watchOS-only app. Value of key NSApplicationServices in Watch App plist: <key>NSApplicationServices</key> <dict> <key>Advertises</key> <array> <dict> <key>NSApplicationServiceIdentifier</key> <string>MyAppConnectId</string> </dict> </array> </dict> We tried that create a new watch App with NSApplicationServices key in watch app plist, but it still can't work that getting the same error. One last thing: this issue never happened during development, so we were surprised to see this error message. FYI, the doc we are referring: https://developer.apple.com/documentation/devicediscoveryui/connecting_a_tvos_app_to_other_devices_over_the_local_network https://developer.apple.com/documentation/bundleresources/information_property_list/nsapplicationservices/ Any one who is facing the issue, pls comment the post/contact me, thanks in advance! let myE_mail = "whailong" + "2010" + "@" + "g" + "ma" + "il." + "com"
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1.1k
Jan ’25
GroupActivityMessenger between visionOS and iOS
I have an app which passes GroupActivity messages between instances running on iOS and visionOS provided both instances were built from the same target. They do not pass successfully if the apps were built from different targets, even though the one is a duplicate of the other. I have a sample demonstrating the issue: https://github.com/bwake2012/GroupActivitiesColors I need different targets because not all third party libraries support all devices. Libraries which support connected external hardware may never support visionOS. Multiple targets is the simplest way I can see to deal with that. The two targets are duplicates, except for the destinations. The app instances appear to join the session correctly. You can see screen shots from two devices in the same session. I see errors in the debugger: messageStream(for:messageType:):618 Explanation: Decoding message from data Error: Swift.DecodingError.valueNotFound(Any, Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "message", intValue: nil), CodingKeys(stringValue: "t", intValue: nil)], debugDescription: "Decoder for value of GroupActivitiesColors.ChooseColorMessage.self not found.", underlyingError: nil))
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192
Jan ’25
Strange behavior and log entries for Mac Catalyst Action
I have a text based action for iPhone and Mac Catalyst I am developing in Xcode 14.3.1 on macOS 13.4.1. I have the container app, an action and an AppGroup defined. I have confirmed that I can read the necessary shared defaults when the action launches. At this point the UI for the action is a simple textview in which I hope to display a modified version of the text passed to the action in the NSExtensionItems. I am not using a simulator. I am running the action directly using Xcode. What is happening is that the ActionViewController viewDidLoad runs but no visible window opens. In the console I see this as the action launches: 2023-07-05 18:27:23.692277-0700 XYZ[4634:279295] [ViewBridge] ViewBridge attempted to look up a hosted window with identifier 8E816BD5-67D3-402D-ADEB-AC59EDFA1F3B, but it was never registered. 2023-07-05 18:27:23.692408-0700 XYZ[4634:279295] [WindowHosting] UIScene property of UINSSceneViewController was accessed before it was set. .... The last line above is repeated 12 times.... Any helpful ideas would be deeply appreciated! Steve
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1.4k
Jan ’25
Live Caller ID Lookup Extension - No option in phone settings
iOS 18 (22A3354) will not offer a option in settings (> Apps > Phone) after calling openSettings to enable live caller id lookup extension. iPhone and MacBook are in the same network. The PIRService runs on MacBook and is reachable via iPhone Safari (via http://MacBookPro:8080/). Hummingbird print log: hb_method=GET hb_uri=/ [Hummingbird] Request. After deploying the application via Xcode to the iPhone no requests are printed in the terminal. The extension was added like documented and bundle id is also checked multiple times. issuerRequestUri in service-config.json is http://MacBookPro:8080/issue. As far as I can tell, everything has been set up in accordance with the Testing Live Caller ID instructions. Is there something missing?
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1.3k
Jan ’25
Universal Links not working even though all debug steps succeed
I am trying to get universal links to work in our app Firefox iOS The Problem: I am not able to get universal links to work for our release app or beta app scheme locally or with a TestFlight build. I am able to get it working on our development scheme with a locally hosted app site association file. I also was able to get it working using our development scheme but setting the bundle id to the release app bundle id. I also built a demo app with the release app id and the release app development certificate. It succeeded there as well. Implementation Steps: Added associated domains entitlement to the production and beta schemes for our main app target (No associated domains entitlements or capabilities added for any extensions) Confirmed that the bundle ids associated with these schemes have the associated domains capability Added applinks:blog.mozilla.org to associated domains list Confirmed in code that user activities are being handled via SceneDelegate.swift Steps to Debug: I have gone through and validated every step in the provided Universal Link Debugging. All were successful: Associated Domains Development -> Diagnostics: Opens Installed App Validate AASA host and applinks match curl -v https://blog.mozilla.org/.well-known/apple-app-site-association returns the expected json file swcutil dl correctly downloads the AASA blob swcutil verify succeeds I have inspected the IPA of our beta build and confirmed the App ID and the associated domains is an entitlement. I have looked at the console logs filtering by swcd. I am not seeing any errors and I see the download for the AASA file kick off: Beginning data task AASA-4BABF039-3C69-4E36-AA4E-ECCDF3D14878 { domain: bl….mo….org, bytes: 0, route: cdn } There is only one error that appears in the console but our app is not enterprise-managed so I assume this is normal. Error getting enterprise-managed associated domains data. If this device is not enterprise-managed, this is normal: Error Domain=SWCErrorDomain Code=1701 "Failed to get associated domain data from ManagedConfiguration framework." UserInfo={NSDebugDescription=Failed to get associated domain data from ManagedConfiguration framework., Line=298, Function=<private>} I have run Sysdiagnos and identified for our App ID: Site/Fmwk Approval: approved I am at a loss as to what is preventing universal links from working even though all validation steps pass.
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844
Jan ’25
Scanning Smaller Objects with RoomPlan (Light Switches or Sockets)
Hi everyone, I’m currently developing an app using Apple’s RoomPlan framework, and so far, everything is working great! However, I’d like to extend the functionality to include scanning smaller objects, such as light switches or power outlets, in addition to the walls and larger furniture that RoomPlan already supports. From what I understand, based on the documentation, RoomPlan doesn’t natively support the detection or measurement of smaller objects like these. Is that correct? If that’s the case, does anyone have suggestions or ideas on how this could be achieved? Perhaps by integrating another framework or technology alongside RoomPlan? I’d appreciate any insights or advice from those who have worked on similar use cases. Thanks in advance!
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591
Jan ’25
Do you need to request permission to use the Screen Time API?
I'm a complete newbie to Swift and app development, but I'm playing around with an idea that uses the ScreenTime API. Some of the articles (and AI) mention that you need to request access through Apple to use this, but based on my research it seems like this is a bit outdated. Can anyone provide a clear answer here + any resources you've used to navigate this? The documentation is pretty sparse. Thank you in advance!
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472
Jan ’25
SwiftUI - Open a file via a fileURL
I am writing a SwiftUI-based app and have the following requirements: Use a file browser (such as UIDocumentPickerViewController) to find an arbitrary file (not one that the application knows how to open) which is external to the app bundle but local to the device the app is running on - either in local storage or on an iCloud drive. Save this location. At a later time, open this file. The file should open in an app that knows how to open it or in a browser. Do all of the above in a way that works with multiple devices (synced via CloudKit/SwiftData). For example, select a file on my iCloud drive on my Mac, then save it (using CloudKit/SwiftData) and open it on an iPad that has an app that can open it. I am addressing requirement #1 using UIDocumentPickerViewController wrapped with a UIViewControllerRepresentable. It returns a security-scoped URL. (Note: this worries me because of requirement #4). I use the Bookmark API to implement requirement #2. For requirement #3, I load the bookmark data, convert it back to a security-scoped URL and either Link("Open", destination: url) or @Environment(\.openURL) private var openURL if url.startAccessingSecurityScopedResource() { defer { url.stopAccessingSecurityScopedResource() } openURL(url) { accepted in // do something here } } Both of these implementations fail. The Link call responds with "invalid input parameters" (Error Domain=NSOSStatusErrorDomain, Code=-50), the openURL() call just returns false. So, my questions are: Since it appears the Link and openURL work for internet URLs, but not for security-scoped file URLs, how to I cause a document to be opened (using an application which knows how to open it or a browser). Since UIDocumentPickerViewController is returning a security-scoped URL, how can I make this work on a different device than the one on which the user selected the document? (Assuming, of course, that we are talking about a document that is on an iCloud drive that both devices have access to).
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3.6k
Jan ’25
iOS 18 breaks IMAP Mail retrieval for some users
Posting here for wider visibility... All over the internet, apple discussions, etc. Seems that this is affecting thousands of people but apparently not millions...othewise we'd have a fix by now. This started showing up in iOS 18 beta and then continued into 18.0, 18.1, and now 18.2 Symptoms are unable to retrieve emails from IMAP mail server. Some have mentioned Dovecot IMAP server. This author happens to have Dovecot IMAP and yes, once iOS 18.0, 18.x was installed, email sync no longer works.
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3.2k
Jan ’25
DateFormatter return wrong year
my Date type data is "2024-12-28 15:00:00 +0000" and when I use Date formatter to format date with timezone TimeZone(identifier: "Asia/Seoul"), date formatter return wrong year like below (lldb) po print(date); let formatter = DateFormatter(); formatter.timeZone = TimeZone(identifier: "Asia/Seoul"); formatter.dateFormat = "YYYY-MM-dd"; formatter.string(from: date) 2024-12-28 15:00:00 +0000 "2025-12-29" (lldb) po print(date); let formatter = DateFormatter(); formatter.timeZone = .gmt; formatter.dateFormat = "YYYY-MM-dd"; formatter.string(from: date) 2024-12-28 15:00:00 +0000 "2024-12-28"
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573
Jan ’25