Hello, I have encountered a question that I hope to receive an answer to. Currently, I am working on a music project for Mac Catalyst and need to enable music files such as FLAC to be opened by right clicking to view my Mac Catalyst app. But currently, I have encountered a problem where I can see my app option in the right-click open mode after debugging the newly created macOS project using the following configuration. But when I created an iOS project and converted it to a Mac Catalyst app, and then modified the info.plist with the same configuration, I couldn't see my app in the open mode after debugging. May I ask how to solve this problem? Do I need to configure any permissions or features in the Mac Catalyst project? I have been searching for a long time but have not found a solution regarding it. Please resolve it, thank you. Here is the configuration of my macOS project: CFBundleDocumentTypes CFBundleTypeExtensions flac CFBundleTypeIconSystemGenerated 1 CFBundleTypeName FLAC Audio File CFBundleTypeRole Viewer LSHandlerRank Default Note: Sandbox permissions have been enabled for both the macOS project and the iOS to Mac Catalyst project. The Mac Catalyst project also has additional permissions for com. apple. security. files. user taught. read write

I have an App that builds for iOS, iPadOS, macOS and Apple TV, which was last released to all the App Stores in April. Preferences/settings are handled by the App itself except for the Apple TV variant, where I use a Settings bundle. This worked fine until tvOS 15.0, where it appears that tvOS is not updating the value of the App’s settings from NSUserDefaults when the Settings App opens. I have been working on this problem off and on for the last week and am at wits end. I’ve searched WWDC videos looking for a clue, there must be some simple change I cannot see. I’ve made clean projects for iOS and tvOS, and using the identical OBJ-C code and Settings plist entries, the iOS version works perfectly, the tvOS version fails in the simulator and on the device. I am not trying to synchronize Settings across devices, just persist across restarts on a single device. My code stores data correctly in NSUserDefaults, it simply seems that tvOS Settings App is not reading values from there for display, nor writing changes that the user makes from Settings back to user defaults. None of the types in the test projects work: TexField, Switch, Title. The test code is so simple I hesitate to include it, but the code and the NSUserDefaults key identifiers do match. This code will preset my App’s version number for Settings to display in iOS 15 but not tvOS 15. It used to work in tvOS 14: <key>DefaultValue</key> <string>DefaultVersionValue</string> <key>Type</key> <string>PSTitleValueSpecifier</string> <key>Title</key> <string>Version</string> <key>Key</key> <string>VersionKey</string> </dict> ```   NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];    [ud registerDefaults:@{      @"TextFieldKey" : @"TextFieldValue",      @"VersionKey" : @"VersionValue"    }];        [ud setObject:@"3.14" forKey:@"VersionKey"]; Any idea? Many thanks.

I released an app for iPhone (and it's could be downloaded for iPad also), and now I developered another app for iPad version with the same code and logic but I modified the layout to fit bigger screen and make better user experience and appearance. Howevert the app review rejected my release due to the duplicate content, how can I solve it?

I want to add the option to choose an alternative icon inside the app. Is there a way to load an icon asset from within the app? I downloaded Apple’s alternative icon sample, which is supposed to show a list of icons to choose from, but even in the sample, it did not work. So the current solution is to add every alternative icon along with another image asset of the same image to display to the user. This sounds like a waste of bytes. Thank you in advance for any help.

My main app does have entitlement to access Coretelphony, i would like to use the same with Appclips, though i was able to add the entitlement to appclip profile, i am unable to create archive for Testflight, i am seeing missing esim profile capabilities, is this not supported in appclips at the moment?

Hi, I have an existing Mac app on the App Store with a couple of widgets as part of the app. I want to now add a new widget to the WidgetBundle. When I build the updated app with Xcode, and then run the updated app, the widgets list doesn't seem to get updated in Notification Center or in the WidgetKit Simulator. I do have the App Store version installed in the /Applications folder as well, so there might be some conflict. What's the trick to getting the widgets list to run the debug version?

I have DNG files that I want to open and show as EDR content in my app. It seems like the DNG files should have enough per pixel information to show more colors that Display P3 but whenever I load the images using CIRawFilter and then inspect the outputImage color space it is always "DisplayP3", not something like "ITU-R BT.2100 PQ" there doesn't seem to be any way to make it load with a different color space for displaying EDR images. Does this make sense for DNG files, it seems like it should? If I open the same file using CIImage with the expandToHDR option e.g. CIImage(contentsOf: rawURL, options: [.expandToHDR: true]) then it does have the desired EDR color space, but then I don't get any of the properties that are available via the CIRAWFilter class to manipulate the data. Basically I just want to be able to open the DNG file via CIRAWFilter and then display it in my SwiftUI app as an EDR image by adding the allowedDynamicRange(.high) property. Image("my-dng-image").allowedDynamicRange(.high) Or do DNG files (just RAW not ProRAW) not contain enough information to be displayed as EDR images, seems like they should.

App update in which there were no changes regarding the widget. Just after it updated, the widget turns black in some cases. It also appears black in the widget gallery. Removing and adding it again did not work in this case, only after an iOS restart it works fine again This is the log 2025-03-20 02:14:05.961611 +0800 Content load failed: unable to find or unarchive file for key: [com.aa.bb::com.aa.bb.widget:cc_widget:systemMedium::360.00/169.00/23.00:(null)~(null)] on no host. The session may still produce one shortly. Error: Using url file:///private/var/mobile/Containers/Data/PluginKitPlugin/51C5E4F2-6F1F-4466-A428-73C73B9CC887/SystemData/com.apple.chrono/placeholders/cc_widget/systemMedium----360.00w--169.00h--23.00r--1f--0.00t-0.00l-0.00b0.00t.chrono-timeline ... Error Domain=NSCocoaErrorDomain Code=4 "file“systemMedium----360.00w--169.00h--23.00r--1f--0.00t-0.00l-0.00b0.00t.chrono-timeline”not exist。" UserInfo={NSFilePath=/private/var/mobile/Containers/Data/PluginKitPlugin/51C5E4F2-6F1F-4466-A428-73C73B9CC887/SystemData/com.apple.chrono/placeholders/cc_widget/systemMedium----360.00w--169.00h--23.00r--1f--0.00t-0.00l-0.00b0.00t.chrono-timeline, NSUnderlyingError=0xa693d3a80 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}

Since beta 4, Using TipKit causes the app to crash. This was not the case in Beta 3. My app uses UIKit

Hi, I have few questions regarding the widgets. I would like to know whether widget and app extensions are same ? This link(https://developer.apple.com/app-extensions/) says widget is type of app extension but I am not quite sure as few link in web says they are different. so need to confirm here :) Can a widget share same bundle id as the main app ? so basically can we use the same provisioning profile as the main app? If we use the same bundle id and provisioning profile, will there be any issue during the app store submission process.?

I recently updated my 16 pro to the latest software 18.4 developer beta. One issue i have encounter is that my always on display is not on or running in the background even tho the toggle option is ON. To fix this I have to go back to the setting and toggle the option back off and on.

Hello everyone, I am currently working on a project that requires me to programmatically manage keyboard layouts on both iOS and macOS devices. I'm looking for a comprehensive list of KeyboardLayout ID values for all the native keyboard layouts available in both iOS and macOS. While I can extract some of this information from the /System/Library/Keyboard Layouts/ directory on macOS, I cannot extract all without adding every keyboard layout active, having a complete and pre-compiled list would be immensely helpful. Does anyone here have such a list or know where I might find one? Any guidance on this matter would be greatly appreciated. Thank you in advance for your assistance! JJ

I want to keep the sidebar fixed in NavigationSplitView. I don’t want the user to be able to open or close the sidebar. I removed the toggle button, but I still couldn’t make the sidebar stay fixed. It can still be closed using Cmd + Alt + S or by dragging. What I want is just to disable the resize feature of the sidebar. Isn’t it possible with SwiftUI? NavigationSplitView is kind of blackhole :) LeftSidebarView() .environmentObject(detailView) .toolbar(removing: .sidebarToggle) .navigationSplitViewColumnWidth(240)

My UI is very heavyweight, so I'd like to show the previous versions using a lighter weight - almost like quick look - UI. This would also allow me to 'zoom to fit' so the entire document can be seen. I am using SwiftUI, but I wouldn't mind jumping into AppKit and/or UIKit to implement this.

Hello, I'm currently coding a productivity app which help user to focus while studying through restricting access to website and app they have selected, however for now, they can really easily make this uselles trhough quitting the app using command + Q or force quit the app in the activity monitor. Do you know how could I block user to quit the app while she is running, and it is allowed by apple guideline ?

Hello, I’m developing an app where I display a SwiftUI view inside a UIHostingController embedded within a UIKit ViewController. I’m trying to animate the height of the UIHostingController’s view based on a switch’s value, but the SwiftUI view doesn’t animate at all. Below is a simplified version of my code: class ViewController: UIViewController { private lazy var parentView: UIView = { let view = UIView() view.backgroundColor = .red view.translatesAutoresizingMaskIntoConstraints = false return view }() private lazy var hostingView: UIView = { let testView = TestView() let hostingController = UIHostingController(rootView: testView) let view = hostingController.view! view.translatesAutoresizingMaskIntoConstraints = false return view }() private lazy var button: UISwitch = { let button = UISwitch() button.addTarget(self, action: #selector(onClickSwitch(sender:)), for: .valueChanged) button.translatesAutoresizingMaskIntoConstraints = false return button }() private var hostingViewHeightConstraint: NSLayoutConstraint? override func viewDidLoad() { super.viewDidLoad() view.addSubview(parentView) parentView.addSubview(hostingView) parentView.addSubview(button) NSLayoutConstraint.activate([ parentView.topAnchor.constraint(equalTo: view.topAnchor), parentView.bottomAnchor.constraint(equalTo: view.bottomAnchor), parentView.leadingAnchor.constraint(equalTo: view.leadingAnchor), parentView.trailingAnchor.constraint(equalTo: view.trailingAnchor) ]) NSLayoutConstraint.activate([ hostingView.bottomAnchor.constraint(equalTo: parentView.bottomAnchor), hostingView.leadingAnchor.constraint(equalTo: parentView.leadingAnchor), hostingView.trailingAnchor.constraint(equalTo: parentView.trailingAnchor) ]) hostingViewHeightConstraint = hostingView.heightAnchor.constraint(equalTo: parentView.heightAnchor, multiplier: 0.5) hostingViewHeightConstraint?.isActive = true NSLayoutConstraint.activate([ button.centerXAnchor.constraint(equalTo: parentView.centerXAnchor), NSLayoutConstraint(item: button, attribute: .centerY, relatedBy: .equal, toItem: parentView, attribute: .centerY, multiplier: 0.25, constant: 0) ]) } @objc func onClickSwitch(sender: UISwitch) { hostingViewHeightConstraint?.isActive = false let multiplier: CGFloat = sender.isOn ? 0.25 : 0.5 hostingViewHeightConstraint = hostingView.heightAnchor.constraint(equalTo: parentView.heightAnchor, multiplier: multiplier) hostingViewHeightConstraint?.isActive = true UIView.animate(withDuration: 0.3) { self.view.layoutIfNeeded() } } } I’m looking for the behavior demonstrated in the video below: Does anyone have suggestions on how to achieve this?

In our application we have two usecases for a Hotkey/Shortcut identification API/method. We have some predefined shortcuts that will ship with our MacOS application. They may or may not change dynamically, based on what the user has already set as shortcuts/hotkeys, and also to avoid any important system wide shortcuts that the user may or may not have changed. We allow the user to customize the shortcuts/hotkeys in our application, so we want to show what shortcuts the user already has in use system-wide and across their OS experience. This gives rise to the need for an API that lets us know which shortcut/hotkeys are currently being used by the user and also the current system wide OS shortcuts in use. Please let me know if there are any APIs in AppKit or SwiftUI we can use for the above

Hey, It seems that when Apple Intelligence is enabled, scrolling can become completely broken when using an app. This is affecting several apps, including telegram: https://github.com/TelegramMessenger/Telegram-iOS/issues/1570?reload=1 It seems that UIPanGesture is affected by this. (MapKit stop being able to scroll too). Killing + Relaunching the app fix the problem. Bug report ID, containing a video: FB16780431

Hello, the LocalizedStringKey does not work in the live activity. What do you suggest me to use in order to get localization in the live activity?

i am posting this because i seek an understanding of Apple's cross-platform UI strategy. my background is UIKit, Core Animation, and Chameleon a UIKit workalike for (then) OSX. UIKit evolved and Mac Catalyst came along. what is the positioning of Mac Catalyst? it extends and at the same time it limits AppKit. is it an AppKit extension or is it a UI framework of its own? a Mac Catalyst app is not an AppKit app, or is it? or is it sort-of? then came SwiftUI. does SwiftUI sit on top of UIKit (for iOS) and Mac Catalyst (for macOS) or is it an unrelated technology? more recently i see CoreUI messages in the debugger console. where does that fit in? will future UIKit, AppKit, Mac Catalyst, and SwiftUI all build upon CoreUI? will CoreUI become a public framework like CoreGraphics, CoreAnimation? in the old Apple docs there were block diagram overviews of how the individual frameworks would sit one on top of the other. this is what i am looking for...