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Programmatically Modifying Per Application or System Wide Color Filters using Cocoa/Swift in MacOS?
I'm looking into how to programmatically control color filters in the Accessibility settings under "System Settings" -> "Accessibility" -> "Color Filters"--in particular the "Intensity" and "Filter type" settings. As far as I have gathered, changing this setting can only be accomplished using the CoreGraphics APIs or Accessibility APIs (I've poked around GitHub, Stack Overflow, and queried some LLMs), but there doesn't seem to be a clear cut example for doing this using public facing APIs, without ripping off source code from another project wholesale or using private APIs. My goal is to overlay a color filter at either a per-application or system level to help with accessibility. If there's a way to overlay this capability on an application-by-application basis as a third-party developer, that would be the most ideal scenario. For example, modifying the look and feel/UX for Launchpad, Photos, etc, as a third-party developer without accessing the source code of the application that I'm modifying the look/feel for (with appropriate user consent of course).
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381
Jul ’25
Handling VoiceOver Focus When Screen Changes (Push, Present, and SplitViewController)
I have some doubts about how VoiceOver handles focus when the screen updates. When a new UIViewController is pushed onto a UINavigationController or presented modally, how does VoiceOver decide which element to focus on? Is there a way to control or customize this behavior? In a UISplitViewController, when an item is selected in the primary view controller, the focus should shift to the relevant content in the secondary view controller. How can we ensure that VoiceOver correctly moves focus to the right element in the secondary panel?
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148
Apr ’25
Unable to Grant Input Monitoring Permission via MDM
I am trying to grant Input Monitoring permission using MDM (Mobile Device Management), but I am facing issues. While I am able to deny the permission, I am unable to grant it. In some profile configurator tools, I noticed a note stating: "Allows the application to use CoreGraphics and HID APIs to listen to (receive) CGEvents and HID events from all processes. Access to these events cannot be given in a profile; it can only be denied." This seems to suggest that granting Input Monitoring permission via an MDM profile may not be possible. Has anyone successfully granted Input Monitoring permission using MDM, or is there an alternative way to achieve this on managed macOS devices?
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491
Feb ’25
Accessibility Personal Voice Issue with iOS & iPadOS Beta 1-6
Please refer to Feedback report: FB19701007 The Personal Voice file created in English changes to either Spanish or Chinese and no longer works properly. This has been happening since Beta 1 of iOS/iPadOS 26. I have been unable to pinpoint what causes this to occur. Possibly downloading foreign voices to a device or using different voices via AVSpeechSynthesizer. I run an app in Xcode on my device that prints to the console info about the installed voices. Initially after creation here is the output: Voice Identifier: com.apple.speech.personalvoice.16173F8D-DFB0-4024-98CC-69D965FD96A4 Language: en-US Then I hear a Spanish accent and find this: Voice Identifier: com.apple.speech.personalvoice.16173F8D-DFB0-4024-98CC-69D965FD96A4 Language: es-MX Currently it isn't working and here is the output: Voice Identifier: com.apple.speech.personalvoice.16173F8D-DFB0-4024-98CC-69D965FD96A4 Language: zh-CN Note that the voice file on all three above is the same. No matter what the user does, the created voice file should never be able to change languages. On my test devices I reset them all by erasing all content and settings and creating a new English Personal Voice and the issue persists. A side issue is the toggle share across devices doesn't remain off if turned off. I tried to not share to see if that could be the cause, but the toggle turns on automatically. It won’t remain off.
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865
Aug ’25
The accessibility app keeps opening by itself on my iPhone 12 Pro. Can anyone please help me?
It’s very annoying but on my iPhone 12 Pro I keep getting the accessibility app with the microphone on and it keeps opening the app by itself and it’s a blank screen and every time I close it it just reopens. I don’t know why it keeps doing this, but it drives me crazy. Does anyone know what else to do? I also have the beta iOS 26 but it’s been doing this even with the past update.
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114
Jun ’25
Focus issues with ScrollView iOS18
When using an app via external keyboard, FocusState and .focused used to work just fine until iOS17. Vertical-axis textfields were also accessible without any issues. But after iOS18 update, adding focused modifier removes elements out of focus order of external keyboard. 1 such example is -when a button using focused modifier and @FocusSate is inside a ScrollView and if this view is getting opened via NavigationLink, that button is not accessible via Bluetooth (external) keyboard. TextEditor / Vertical-axis TextFields also seem to be impacted in external-keyboard-focus-order when added inside ScrollView. Is this a known iOS18 issue with ScrollView / any tip to get this fixed ? Sample code that can reproduce this issue: struct ContentView: View { @State private var showBottomSheet: Bool = false @State private var goToNextView: Bool = false @FocusState private var focused: Bool @AccessibilityFocusState private var voFocused: Bool var body: some View { NavigationView { VStack { Text("Hello, world!") // This button works fine in Bluetooth keyboard in all versions Button("Trigger a bottomsheet") { showBottomSheet = true } .focused($focused) .accessibilityFocused($voFocused) Button("Goto another view") { goToNextView = true } NavigationLink( destination: View2(), isActive: $goToNextView ) { EmptyView() } .accessibility(hidden: true) } .sheet(isPresented: $showBottomSheet, onDismiss: { focused = true voFocused = true }, content: { VStack() { Text("Hello World ! I'm in a bottomsheet") Button("Close me") { showBottomSheet = false } } }) .padding() } } } #Preview { ContentView() } struct View2: View { @FocusState private var focused: Bool @AccessibilityFocusState private var voFocused: Bool @State private var showBottomSheet: Bool = false var body: some View { ScrollView { VStack { Text("check") // In iOS18, this button doesn't get focused in Bluetooth / external keyboard // This issue occurs when these 3 combine in iOS 18 - a button using FocusState inside a view that has a ScrollView & it is opened via NavigationLink Button("Trigger a bottomsheet") { showBottomSheet = true } .focused($focused) .accessibilityFocused($voFocused) Button("Test button") { } } .sheet(isPresented: $showBottomSheet, onDismiss: { focused = true voFocused = true }, content: { VStack() { Text("Hello World ! I'm in a bottomsheet") Button("Close me") { showBottomSheet = false } } }) .padding() } } }
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627
Feb ’25
Apple Developer Program Purchase Not Saving Progress
I’m trying to enroll in the Apple Developer Program as an individual. I’ve gone through the steps on the website and started the purchase process. However, after a couple of days when I return to the site, it doesn’t remember my progress — I have to start the enrollment from scratch every time. Is this expected behavior? Am I missing a step to save my progress or complete the enrollment properly? Any help or guidance would be appreciated. Thank you!
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163
Jun ’25
VoiceOver and limited vision approaches for custom stepper control
I have a product for designing particle emitters, which I suspect may be of limited interest to people with limited vision. I'd still like to ensure I'm doing a good job with VoiceOver mode. There's a related, simplified sample online, if you want to look at the code As you can see from the picture below, a large part of the interface mimics Xcode's particle editor, with many value entry controls that combine up/down buttons with a tappable label. Tapping the label goes into edit mode. Apart from changing how labels are stepped through in voiceover in my app, how should I handle these stepper buttons? Is this a good place to use a Custom Rotor?
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83
Jun ’25
iPhone screen layers
I need to understand the different layers that are there in the iPhone X and later OLED screens as I am designing a hardware attachment. They seem to be projecting letters and images from a different layer than the subpixel layer. Is this proprietary information, or is there a resource that explores them?
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112
Apr ’25
App in Unlisted Language
I am building a language learning app for a Unlisted Primary Language. Any suggestions or heads ups? My plan is to select english and go with it. Its unfortunate that I have to list a language learning app incorrectly and a tag for that language probably does not exist across the apple system.
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249
Jul ’25
CFPrefsPlistSource Read Error with App Group Preferences
I am encountering the following issue while working with app group preferences in my Safari web extension: Couldn't read values in CFPrefsPlistSource<0x3034e7f80> (Domain: [MyAppGroup], User: kCFPreferencesAnyUser, ByHost: Yes, Container: (null), Contents Need Refresh: Yes): Using kCFPreferencesAnyUser with a container is only allowed for System Containers, detaching from cfprefsd. I am trying to read/write shared preferences using UserDefaults with an App Group but keep running into this error. Any guidance on how to resolve this would be greatly appreciated! Has anyone encountered this before? How can I properly configure my app group preferences to avoid this issue?
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722
Feb ’25
App Store Policy for apps that allows users to unlock contact details of person who posted content.
We have an app under development which allows musicians to unlock contact details of people who posted about an upcoming event. The musician pays a fees to unlock this contact details. Both the musician & the post owner are registered users. We will reveal the same contact info that the post owner used for account signup verification. Questions: Is this allowed? (given that we obtain consent to share contact info to other people and clearly mention this in privacy policy) If yes, will we have to use App store in-app purchase to facilitate this transaction or are we free to use a payment processor such as Stripe.
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625
Feb ’25
A Summary of the WWDC25 Group Lab - Accessibility
A Summary of the WWDC25 Group Lab - Accessibility At WWDC25 we launched a new type of Lab event for the developer community - Group Labs. A Group Lab is a panel Q&A designed for a large audience of developers. Group Labs are a unique opportunity for the community to submit questions directly to a panel of Apple engineers and designers. Here are the highlights from the WWDC25 Group Lab for Accessibility. Accessibility Nutrition Labels are a really big step forward for the experience people have on the App Store to find apps that will work for them. How should developers get started with Accessibility Nutrition Labels? A good starting point is to review the Accessibility Nutrition Label evaluation criteria on App Store Connect Help. It's a concise document, roughly 10 pages, and you can approach it section by section after the introduction. Even with prior experience using accessibility features like VoiceOver, the criteria offer valuable insights that might not be immediately apparent. For those newer to accessibility, a good entry point might be one of the visual feature labels, such as Dark Interface, which is a popular and frequently used feature. Which accessibility features can I indicate support for in Accessibility Nutrition Labels? The accessibility features covered include support for assistive technologies like VoiceOver and Voice Control, media enhancements such as captions and audio descriptions, and display accommodations. These display accommodations cover options like larger text, dark interface, differentiating without color alone, sufficient contrast, and reduced motion. With the new Accessibility Nutrition Labels, will app store reviewers validate what we select? The Accessibility Nutrition Label can be edited at any time without requiring a new app submission. However, if an app inaccurately claims feature support, App Review may contact the developer and request an update to the label or the app. Are there any updates to tools for analyzing the accessibility of our apps? Although there aren't new updates this year, continued support for Accessibility Audits is available through Xcode's built-in Accessibility Inspector. XCTest also supports accessibility audits, enabling developers to test app accessibility with every build. These audits analyze aspects like contrast, dynamic type, text clipping, element labels, and more within each view. For a deeper dive, the "Perform accessibility audits for your app" session from WWDC 2023 is a valuable resource. What are accessibility features you wish more people integrated? Accessibility features encompassing user input labels optimized for voice control, keyboard navigation and shortcuts, and dynamic type support could be more used to benefit users. What were some of the biggest accessibility challenges your team encountered while developing Liquid Glass? Apple is known for its innovation and strives to deliver a high-quality experience for everyone. Accessibility is considered a core component of visual design from the outset. For example, the Liquid Glass design inherently supports reduced transparency and increased contrast. As design continues to evolve, user feedback submitted through Feedback Assistant is invaluable. How does Liquid Glass respond to contrast? Especially for text and low contrast environments. Content legibility is a crucial aspect of the Liquid Glass design. It inherently supports accessibility features like reduced transparency and increased contrast. Your feedback during the beta period and beyond is essential to ensuring Liquid Glass provides a great experience within your apps. What are some Apple apps that stand out for their accessibility? Apps like Keynote in the iWork suite offer groundbreaking VoiceOver features to enhance creative productivity for all users. Assistive Access makes core apps such as Messages, Photos, Camera, Phone, and Music more accessible. Podcasts provides transcripts to broaden its reach, and frameworks like SwiftUI ensure that apps built with the latest UI frameworks have excellent built-in accessibility.
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896
Jul ’25
TestFlight access stuck on old device
Hey all — hoping someone here has dealt with this before. I’m testing an iOS app via TestFlight, and when I originally got access, I didn’t have an iPhone. So I signed in with my Apple ID on my girlfriend’s iPhone and used TestFlight there. Everything worked fine. Now I finally have my own iPhone (iPhone 16), downloaded TestFlight, signed in with the same Apple ID, and had the developer resend the invite. But when I tap "Open in TestFlight" from the invite email, I get this error: “Couldn’t load app because your Apple account has already been associated to this app.” The dev tried removing me as a tester and re-adding me, I’ve deleted TestFlight from both phones, rebooted, reinstalled, waited in between — still no luck. Even tried opening the invite link in Safari instead of Mail. Is there any way to get Apple to fully reset the association with the old device so I can use TestFlight on my new iPhone? Or do I really need to make a new Apple ID just to get around this? Any help would be huge — thanks!
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319
Jun ’25
Attaching procedural audio to an ARKit SCNNode
I’m developing an ARKit application where I aim to attach procedurally generated audio to detected planes in the environment. While using a static audio file with SCNAudioSource and SCNAudioPlayer works as expected, integrating procedural audio via AVAudioSourceNode does not produce any sound, nor does it generate any error messages: Stack Overflow Post Working Implementation with Static Audio File: let audioPlayer = SCNAudioPlayer(source: audioSource) node.addAudioPlayer(audioPlayer) Attempted Implementation with Procedural Audio: // Audio generation code } let audioPlayer = SCNAudioPlayer(avAudioNode: audioNode) node.addAudioPlayer(audioPlayer) In this setup, the AVAudioSourceNode successfully generates audio when connected directly to an AVAudioEngine. However, when used with SCNAudioPlayer and attached to an SCNNode, it fails to produce sound. What doesn’t work is creating some procedural audio with an AVAudioNode, as documented here: Apple docs Additionally, I explored the WWDC18 AR game project, SwiftShot, which utilizes SCNAudioPlayer(avAudioNode:). After updating it for the latest Xcode, the graphics function correctly, but the audio does not play. I also noted that the Apple documentation mentions an audioPlayerWithAVAudioNode: method, stating: Using this initializer is typically not necessary. Instead, call the audioPlayerWithAVAudioNode: method, which returns a cached audio player object if one for the specified AVAudioNode object has already been created and is available for use. However, this method does not appear to be available in Swift. Any insights or guidance on this matter would be greatly appreciated.
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209
Apr ’25