Hi, I want to generate some sample datas for demonstrating the functions of my app when the app launched. My codes are as followings: func generateSampleData() { let hasLaunchedKey = "HasLaunchedBefore" let defaults = UserDefaults.standard if !defaults.bool(forKey: hasLaunchedKey) { //generate the demo data } defaults.set(true, forKey: hasLaunchedKey) } And I put the func in a view's onAppear modifier. I found every time I go the view, it generates the demo data again, which results in producing a lot of demo data. But I have set the status of the function running in the userdefault. Why did it happen? Best Wishes,

I have some questions about Liquid Glass and iOS 26 on the iPhone. Routine scrolling transactions in any view are causing the title to change from Light Mode colors to Dark Mode colors. Is this now standard operation? The column headers are also displaying a black stripe across the top of the screen when scrolling. So why doesn't the display shift when in Dark Mode to Light mode? Scrolling is causing everything in the header (navigation title, time, battery status, and wi-fi status) to change from black to white. Is this an accessibility action that I may have turned on by accident? I'm not very thrilled by this behavior!

I'm developing an iPadOS 18+ application that uses a UITabBarController, styled as a sidebar, to serve as the primary navigation interface. This setup includes 20 different tabs, each representing a distinct section of the app. For the user experience, each tab needs to present a master-detail interface, implemented using a UISplitViewController. The goal is to allow users to navigate between tabs via the sidebar, and within each tab, access related content through the split view's list-detail pattern. The Problem: Currently, my implementation involves instantiating a separate UISplitViewController for each tab, resulting in 20 unique split view instances embedded inside the UITabBarController. While this works functionally, it leads to significant memory usage, especially after the user opens each tab at least once. The accumulation of all these instantiated view controllers in memory eventually causes performance degradation or even memory warnings/crashes on lower-end iPads. The Question: What is the best approach to implement this type of architecture without running into memory management issues? Specifically: Is there a way to reuse or lazily load the UISplitViewController instances only when needed? Can we unload or release split view controllers that haven't been used for a while to reduce memory pressure? Would a custom container controller be more appropriate than using UITabBarController in this case? Are there iPadOS 18+ best practices or newer APIs that support this kind of complex multi-tab, multi-split-view structure efficiently? Any advice on how to optimize memory usage while preserving the sidebar navigation and split view layout would be highly appreciated.

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I can't find any documentation on design guidelines for "Login with Game Center" button. My app allows users to "Play as Guest" or "Login with Game Center". Since Apple provides somewhat strict guidelines for designing "Sign in with Apple" button, i was wondering how to design the button for Game Center login. Should i use Game Center icon. And will Apple review reject this?

I found that unofficial apps like ChatGPT and Shadowrocket can use widgets in VisionOS 26. How is this achieved? How can I also enable widgets for apps I develop?

Hi Apple developer community. I have a question a lot of users don’t like the new control center and notification center. Are you guys gonna blur the background or are you guys gonna keep it the same?

I am looking for guidance on how people have solved this problem/use case. What is the best way to structure a seat based subscription app that an organization can pay for seats for all their users, can be distributed via mdm or via app store and is easy (low friction) to get paid for and started for small companies? I market to a business to buy my app, they want it installed on all 25 devices they have. They use ABM to acquire 25 licenses with and MDM to distribute. The app is currently free to download so ABM charges $0 but has a paywall to use. The paywall is a RevenueCat one and no user account is needed. All entitlements and free trial work great. When it is deployed to the 25 devices, they can either sign up with their own AppleId and own/company credit card, or use a company appleid and company card for all 25 devices to solve the issue but neither are great. Doubtful they would want to pay their money for a company required app on a company phone (don’t blame them). If they share an appleid, my MRR drops to 1/25th since they will just share the purchase. Any suggestions would be greatly appreciated.

I have been battling the new Icon Composer app for 2 days trying to build an app icon. However, I cannot get it to import any files. I have used the Apple provided App Icon Template. I have exported my layers to .svg and when I open the finder, everything is disabled. I can't find help for this anywhere. I am on Sequoia on my Mac and not sure how to design this app icon without access to the composer.

I want to know if the program written in C language can be implemented through the software package, write a software package containing C language on Xcode, and then apply it in Swift Playground.

I have the following code that renders a one-page PDF: func render() -> URL { let renderer = ImageRenderer(content: pdfView()) let url = URL.documentsDirectory.appending(path: "filename.pdf") renderer.render { size, context in var document = CGRect(x: 0, y: 0, width: 2550, height: 3300) guard let pdf = CGContext(url as CFURL, mediaBox: &document, nil) else { return } pdf.beginPDFPage(nil) context(pdf) pdf.endPDFPage() pdf.closePDF() } return url } func pdfView() -> some View { Text("View") } How can this be modified so that it renders a PDF with more than one page?

What is the step-by-step process to run an iOS application paired with the Mac in my MAUI project? I am using Windows with Visual Studio 2022 V17.13.5. Application: Multiplatform; Language: C#; Framework: MAUI 8; Xcode: 16.2; Objective: Identify and fix the issue to allow the application to run correctly.

Context & Issue I am developing an iOS application. My app icon uses colors that are relatively close to each other. When the user enables Accessibility → Display & Text Size → Color Filters → Grayscale (or similar modes), the icon becomes harder to distinguish because it loses color and contrast is reduced. Goal When iOS switches to grayscale mode, I want the app icon to maintain good contrast between its elements so it remains clearly recognizable. What I’ve tried Redesigned the icon with more contrasting colors. Added strokes/outlines, but it still doesn’t look much better in grayscale. Researched how iOS renders app icons when grayscale is enabled, but couldn’t find a way to override or provide an alternative icon. Specific questions Is there any API or mechanism in iOS that allows providing a different version of the app icon when the user has grayscale mode enabled? If there’s no direct API, are there any best practices for designing iOS app icons to ensure good contrast when converted to grayscale? Do we have to design grayscale version for app icon? Thank you!

Can the vehicle‑side UWB module, acting as a Nearby Accessory, perform ranging with multiple iOS phones simultaneously while iOS cell uses background ranging with the vehicle‑side UWB (which involves BLE GATT services)? I mean, when the IOS cell works in the background, it will read the nearby gatt characteristic automatically. If there were multiple phones perform ranging with the accessory, the read characteristic from the accessory side, what shall its content be? Or does the accessory only perform ranging with one phone at a time?

Does iOS 26 support HDR images for app icons to be rendered in High Dynamic Range for Springboard or not?

I have many Apple devices, such as macbook, iPad and iPhone. It's very convenient for me to transfer files between devices. However, when I want to send files to my own device in public places, I often click on the wrong recipient because the list avatar keeps changing. I hope the list of recipients can be grouped One group is my own device (or the one I often send to), and the other group is other devices. When the user is about to send, the mouse will be in a relatively fixed and mentally expected area. I feel that this can reduce the probability of sending wrongly

Hi everyone, I’m new to macOS development and working on an app idea that needs a timeline-based editor interface, similar to what you see in Logic Pro or Final Cut. The UI I want to build would have: A horizontal beat ruler that follows BPM and shows beat positions Several vertical tracks stacked below it (for things like events or markers) Horizontal zooming and scrolling A preview panel on the right side that stays in sync with the timeline I’m currently trying this in SwiftUI, but I’m running into some limitations and wondering if AppKit would be a better fit, or maybe a hybrid of the two. My questions: Where should I start when building something like this? What’s the best way to make the beat ruler and all track layers scroll together? How should I handle zooming in/out and syncing the display to a BPM timeline? Is there a clean way to integrate AppKit for the timeline view while keeping SwiftUI elsewhere?

Hello everyone. I want to do navigationTitle (located on the top side on MacOS system) in LiquidGlass style. now my solution look like: just black rectangle. But i want like this: opacity and LiquidGlass. Like in Photo app in MacOS. Please help me, thank you in advance. My code: struct RootView: View { @Environment(\.horizontalSizeClass) var hSize var body: some View { if hSize == .regular { DesktopLayout() .navigationTitle("title") .toolbarBackground(.ultraThinMaterial, for: .automatic) } else { MobileLayout() } } }

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Hi, I was trying to use macOS-Sequoia-Production-Templates in Sketch format and when I try to export png icon file of the document template, it always includes grey nontransparent background which I am unable to delete. In contrast, exporting png app icon file from another template has transparent background and exports well. Is it something wrong with the document icon production template? How can I export document png icon file with transparent background?? Thanks