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Look to Scroll
Hello! I’m excited to see that Look to Scroll has been included in visionOS 26 Beta. I’m aiming to achieve a feature where the user’s gaze at a specific edge automatically scrolls to that position. However, I’ve experimented with ScrollView and haven’t been able to trigger this functionality. Could you advise if additional API modifiers are necessary? Thank you!
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514
Jul ’25
iOS 26 Floating Search Tab in UIKit
Does anyone have any documentation for how to achieve the floating search tab item in UIKit apps that use UITabBarController? The Liquid Glass UIKit video had code for minimizing the tab bar on scroll down, but I didn't see anything on keeping the search button locked to the bottom trailing edge (as in this screenshot below).
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257
Jul ’25
SwiftData and discarding unsaved changes idea???
Someone smarter than me please tell me if this will work... I want to have an edit screen for a SwiftData class. Auto Save is on, but I want to be able to revert changes. I have read all about sending a copy in, sending an ID and creating a new context without autosave, etc. What about simply creating a second set of ephemeral values in the actual original model. initialize them with the actual fields. Edit them and if you save changes, migrate that back to the permanent fields before returning. Don't have to manage a list of @State variables corresponding to every model field, and don't have to worry about a second model context. Anyone have any idea of the memory / performance implications of doing it this way, and if it is even possible? Does this just make a not quite simple situation even more complicated? Haven't tried yet, just got inspiration from reading some medium content on attributes on my lunch break, and wondering if I am just silly for considering it.
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Jul ’25
ios 18.0 bug UITabBarController "More" Tab First Item Not Displaying Properly on iOS 18
Hello everyone, I'm working on an iOS application using Objective-C and UITabBarController. My app has more than 5 tabs, so the additional tabs are placed under the "More" tab. However, I've encountered an issue specific to iOS 18 where the first item in the "More" tab does not show up properly. This issue does not occur in iOS 17 or earlier versions. Here's my setup method: (void)mainTabbarSetUp { NSMutableArray *tabItemArray = [NSMutableArray array]; UIViewController *viewController1, *viewController2, *viewController3, *viewController4, *viewController5, *viewController6, *viewController7; UINavigationController *navviewController1, *navviewController2, *navviewController3, *navviewController4, *navviewController5, *navviewController6, *navviewController7; viewController1 = [[UIViewController alloc] init]; navviewController1 = [[UINavigationController alloc] initWithRootViewController:viewController1]; navviewController1.tabBarItem.title = @"Watch List"; navviewController1.tabBarItem.image = [UIImage imageNamed:@"tab_icn_watchlist"]; [tabItemArray addObject:navviewController1]; // Similarly adding other view controllers... viewController6 = [[UIViewController alloc] init]; navviewController6 = [[UINavigationController alloc] initWithRootViewController:viewController6]; navviewController6.tabBarItem.title = @"Cancelled"; navviewController6.tabBarItem.image = [UIImage imageNamed:@"tab_icn_cancelled"]; [tabItemArray addObject:navviewController6]; self.mainTabBarController.viewControllers = tabItemArray; } What I've Tried: Verified that each view controller is correctly initialized and assigned to a UINavigationController before being added to the tab array. Logged the contents of the moreNavigationController to confirm that it contains the correct view controllers. Tested by reducing the number of view controllers to less than 5, and the issue does not occur. Ensured that all UINavigationControllers are configured consistently (e.g., translucency, bar style, etc.).
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2.5k
Oct ’24
Reset SwiftUI animation for another step.
I was trying to move from appkit to swiftUI. As a learning project I am building a cellular automata style project based on Pattersons Worms.. I am trying something similar to the EA game Worms? for the Commodore 64. There is a video on YouTube of the game running, but I'm not allowed to link it here. The problem I have is that the animation is driven by a ruleset. When the automata hits a configuration that is not in the ruleset it is supposed to stop and ask the user. For each step the model returns either the next move, or nil to indicate the user need to make a choice that will be sent back to the model to be added to the ruleset. My current approach, and I might be following the wrong path, is a ZStack where the bottom level is the grid, the middle level is the established worm segments and the top level is either the animation of the next worm segment or the user chooser to choose the segment. I've only implemented the animation of the next worm segment. The idea is that when the model adds a segment that it first animated at the top level and then displayed by the middle level. Then the top level animates the next segment. I was animating the trim on the segment to draw the line. If the current move is nil, then the middle level draws the segment. If current move has a value, the animation draw it, and then on completion sets the current move to nil so that the bottom level draw it. The problem I ran into was resetting the animation to draw the next segment. I've tried two approaches. in one the completion resets the animation boolean variable, but I need a manual step to set the next stage of the animation. The other uses the completion to set the next step, but it the animation doesn't run for the step and the display is an always a step behind. I'm not sure how to both update the move and reset the animation at the same time. I have uploaded a simplified version without the full grid and simplified model to GitHub (https://github.com/thomasrdean/AnimationTest). Is there any other way to reset the animation the than the completion so I can use the completion to retrieve the next step from the model?
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73
May ’25
Controlling the focus order in a UICollectionView
I'm running into a problem with the focus order in my UICollectionView in my tvOS app. The layout of my app is outlined in the following diagram On the uppermost layer I have a UITableView, each cell containing a single UICollectionView that can contain a variable number of UICollectionViewCells. When the user swipes down, I want the left-most item in the next row down to be selected, as follows: I've been able to get this to work for the majority of cases. The exception is when the previously focused item extends to the length of the screen - in this case the next focused item isn't the leftmost item, but rather the center item, as follows. Using focus guides won't really fit the use case here since collection views are dynamically generated. I've found that there is a function in UICollectionViewDelegate, indexPathForPreferredFocusedView that should help here but it only seems to be called intermittedly, even though I have set remembersLastFocusedIndexPath on the collectionview to true. I can force it to be called by calling setNeedsFocusUpdate() but I can't figure out a good place to call it - shouldUpdateFocus is too early and didUpdateFocus is too late. Is there some way to constrain the focus area of a view to a certain subset of it's frame - for example, the left-most quarter of its width? Or does anyone know of some other solution to this problem?
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534
Jan ’25
Using @Environment for a router implementation...
Been messing with this for a while... And cannot figure things out... Have a basic router implemented... import Foundation import SwiftUI enum Route: Hashable { case profile(userID: String) case settings case someList case detail(id: String) } @Observable class Router { var path = NavigationPath() private var destinations: [Route] = [] var currentDestination: Route? { destinations.last } var navigationHistory: [Route] { destinations } func navigate(to destination: Route) { destinations.append(destination) path.append(destination) } } And have gotten this to work with very basic views as below... import SwiftUI struct ContentView: View { @State private var router = Router() var body: some View { NavigationStack(path: $router.path) { VStack { Button("Go to Profile") { router.navigate(to: .profile(userID: "user123")) } Button("Go to Settings") { router.navigate(to: .settings) } Button("Go to Listings") { router.navigate(to: .someList) } .navigationDestination(for: Route.self) { destination in destinationView(for: destination) } } } .environment(router) } @ViewBuilder private func destinationView(for destination: Route) -> some View { switch destination { case .profile(let userID): ProfileView(userID: userID) case .settings: SettingsView() case .someList: SomeListofItemsView() case .detail(id: let id): ItemDetailView(id: id) } } } #Preview { ContentView() } I then have other views named ProfileView, SettingsView, SomeListofItemsView, and ItemDetailView.... Navigation works AWESOME from ContentView. Expanding this to SomeListofItemsView works as well... Allowing navigation to ItemDetailView, with one problem... I cannot figure out how to inject the Canvas with a router instance from the environment, so it will preview properly... (No idea if I said this correctly, but hopefully you know what I mean) import SwiftUI struct SomeListofItemsView: View { @Environment(Router.self) private var router var body: some View { VStack { Text("Some List of Items View") Button("Go to Item Details") { router.navigate(to: .detail(id: "Test Item from List")) } } } } //#Preview { // SomeListofItemsView() //} As you can see, the Preview is commented out. I know I need some sort of ".environment" added somewhere, but am hitting a wall on figuring out exactly how to do this. Everything works great starting from contentview (with the canvas)... previewing every screen you navigate to and such, but you cannot preview the List view directly. I am using this in a few other programs, but just getting frustrated not having the Canvas available to me to fine tune things... Especially when using navigation on almost all views... Any help would be appreciated.
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252
Jul ’25
iPad/iPhone - Display best practices….
So…I am hitting a wall here and could use some guidance towards best practice. I’ve developed an app in Xcode/SwiftUI that renders just fine on the iPhone - text, images, buttons, frames…everything is nicely centered on the screen or scrolls where and when I want. The iPad though…not so much. I’m having issues with tops and bottoms being cut off in scrollviews. These are just straight up text screens too - the ones with other elements/controls…they’re rendering fine. I’ve tried a mix of geometry, vstack, scrollview, padding, spacers…the lot of it. Nothing I seem to do works - the views do not want to fill and fit properly. And, of course, the issue becomes worse the moment you flip the iPad into landscape view. Or use the 13” models. I’d imagine others are battling these issues as well and found solutions, so I decided to hit up the brain trust.
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122
Apr ’25
4.3.0 Design: Spam
Hello fellow developers and Apple employees As I'm sure we're all tired of seeing, my app has been rejected under 4.3.0 Design: Spam I am frankly struggling to understand the logic. Here are the main features of my 2D Arcade game: simulation of flying above a field of lava. This is a tense experience! One mess-up, and the player is sent to the lava below! it has a jetpack which continuously uses fuel. Again, tension! You have to be careful about when and where you glide--can you grab that fuel pod? Oh no--it disappeared! it allows players to glide and fly around the map. Gliding gives a brief respite from the tension. Flying lets the players explore the fascinating world of Hokusai's 40 views from Mount Fuji. it allows players to collect fuel pods, refueling their jet pack. This reward not only allows them to play longer, it bumps their score, and promotes a goal of beating previous scores. it allows players to view a parallax background of woodcuts from 40 views from Mount Fuji, a famous work by Hokusai, which broadens cultural boundaries it requires players to dodge red clouds, which end the game. These clouds are nefarious--they follow the player around! it allows players to rest on white clouds, which restores their fuel. Again, a relief from the tension. the white clouds disappear after a moment, adding an element of tension--wouldn't it be nice if they lasted forever? Sure--but then the game would be boring and repetitive (and it WOULD be spam) Architecture: Godot using GDScript I admit--I initially included reference material that was not mine to distribute. 100% my mistake, and I removed that prior to resubmitting. Now though, my app continues to be rejected as spam--this most recent rejection occurred within 10 mins of the last submission. I'd be happy to post my game online if someone would like to play. Yes, it's simple--and yes, it's arcade-esque. Has anyone successfully reversed a 4.3.0 Design Spam designation on an app? I would rather not create a new app to submit, as I understand that is against the TOS--but is a commonly discussed workaround. Is it because I'm using GDScript? Should I rewrite into c#? I don't know that I can "fix" my game, as it's intended to be quite simple.
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713
Nov ’24
Liquid glass: UIPageViewController inside UITabbarController adding blur effect always in iOS26
When using UIPageViewController inside a UITabBarController on iOS 26 with Liquid Glass adoption, visiting the PageViewController tab applies a blur effect to the navigation bar and tab bar even though the current child view controller of the pageView is not scrollable and does not reach behind these bars. Questions: Is this the expected behavior that the pageview's internal scroll view causes the bars to blur regardless of the page view's child content’s scrollability? If so, is there an official way to make the blur effect appear only when the pageview's current child view controller actually scrolls behind the navigation bar or tab bar, and not in static cases? Tried the same in SwiftUI using TabView and TabView with page style. Facing the same issue there as well. Sample screenshots for reference, Sample SwiftUI code, struct TabContentView: View { var body: some View { TabView { // First Tab: Paging View PagingView() .tabItem { Label("Pages", systemImage: "square.fill.on.square.fill") } // Second Tab: Normal View NavigationStack { ListView() } .tabItem { Label("Second", systemImage: "star.fill") } // Third Tab: Normal View PageView(color: .blue, text: "Page 3") .tabItem { Label("Third", systemImage: "gearshape.fill") } } .ignoresSafeArea() } } struct PagingView: View { var body: some View { TabView { PageView(color: .red, text: "Page 1") PageView(color: .green, text: "Page 2") PageView(color: .blue, text: "Page 3") } .tabViewStyle(.page) // Enables swipe paging .indexViewStyle(.page(backgroundDisplayMode: .always)) .ignoresSafeArea()// Dots indicator } }
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Jul ’25
[Proposal] Sense & Store – Intelligent App Suggestions from Safari (with On-Device AI)
Hello everyone, I’d like to propose Sense & Store — a seamless integration between Safari and the App Store, powered by on-device AI, designed to understand what users are reading, searching, or selecting in Safari, and suggest relevant apps that match their current context or intention. 🔍 Key Idea: “Sense” the user’s need through intelligent analysis of web content, then “Store” — offer the most relevant app, either already installed or available in the App Store. 🌟 Core Features: • AI-powered context detection directly inside Safari • Real-time app suggestions based on user intent • Smart overlays when selecting text or data (e.g., phone numbers, emails, tools) • Privacy-first: All AI runs on-device (Apple Neural Engine) • Instant App Launch or Installation via StoreKit ✅ Examples: • Reading an article on productivity? → Suggests Notion or Things. • Looking up meditation tips? → Recommends Calm or Headspace. • Selecting a phone number? → Offers CRM or spam blocker apps. • Exploring code samples? → Suggests Pythonista or developer tools. 🔒 Privacy & Performance: • 100% on-device intelligence (no data sent to servers) • Follows Apple’s privacy framework • Works with SafariKit + StoreKit + CoreML ⸻ I’m happy to provide a full prototype roadmap and technical architecture. Feedback and collaboration are welcome! Would love to hear your thoughts — especially from developers who build for Safari, App Clips, or work with CoreML. Thanks! by: Apple lover....
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83
Jun ’25
iOS26 WWDC25 large inline navigation?
How to achieve the same navigation bar style as in the Design foundations from idea to interface - WWDC25 video? Screenshot: https://imgur.com/a/huzsm1H There's no new navigationBarTitleDisplayMode that has action buttons aligned with the title.
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127
Jun ’25
Using .glassEffect in Charts
Hi, I was wondering if it's possible (and advisable) to use the new glass effects available in iOS 26 in Swift Charts? For example, in a chart like the one in the image I've attached to this post, I was looking to try adding a .glassEffect modifier to the BarMarks to see how that would look and feel. However, it seems it's not available directly on the BarMark (ChartContent) type, and I'm having trouble adding it in other ways too, such as using in on the types I supply to modifiers like foregroundStyle or clipShape. Am I missing anything? Maybe it's just not advisable or necessary to use glass effects within Charts?
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Aug ’25
Huge UI difference between Simulator and Real Device
Hi everyone, I’m testing our SwiftUI app on both Xcode simulator and a real iPhone. On the simulator, everything looks clean and aligned. But when I run it on an actual iPhone (same build, iOS 18), the layout looks broken—fonts overlap, spacing is off, and elements are misaligned. Both screenshots are from the exact same screen and time. First is simulator, second is iPhone. Any idea why this difference happens? Is there something I should check in terms of rendering or layout settings? Thanks in advance!
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247
Jul ’25
Is there any way to write a screensaver for macOS using Python Pygame?
I want to be able to write a cross-platform screensaver that works on both Windows and macOS using the Pygame 2D graphics library in Python. On Windows, this is super easy - you just write your program with three possible command line arguments: /p for preview mode, /c for the configuration dialog mode, and /s for the actual full-screen screensaver mode. Then you just use pyinstaller to build an .exe file and rename the extension to .scr, and you're good to go. However, it seems that making a screensaver on macOS is a pretty convoluted process, and there was stuff about specific Objective-C functions that you had to write, and I didn't really understand the documentation. Could you please tell me if there is any way to simply get my Python Pygame program to build as a proper .saver file? Thanks!
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714
Oct ’24