Is there a way in #SwiftUI to detect when a sheet is being dismissed by a user to present a confirmationDialog in case of unsaved changes, as recommended by Apple HIG about Sheets? In UIKit, we can use the presentationControllerDidAttemptToDismiss method. Feebdack: FB22777840

So it seems if there is a confirmation action associated with the cancellation action, we should put the cancellation at the leading edge (what iOS has been doing for ages). But if it’s just a close button in the toolbar, we should put it at the trailing edge, like what Apple seems to be doing.

Apple updated its Human Interface Guidelines for Sheets on March 24, 2026 to add guidance for button placement in the toolbar. "In iOS & iPadOS, the Cancel button belongs on the leading edge of the top toolbar." Time to update my apps 🙂 Documentation: developer.apple.com/design/human...

@mikestern.bsky.social hey Mike. Is there a way to see all changes made to Apple Human Interface Guidelines instead of having to check each page to see the log? Thanks!

Is there a local LLM I can run on my Mac to translate my app’s string catalogs? #xcode #iosdev

Flo found an alternative to the free trial toggle on its paywall that seems compliant with Guideline 3.1.2 😮 It replaced the toggle by a “Not sure yet? Start a free trial” button that selects the offer with the free trial while presenting a sheet with all subscription options.

The solution is to use .compositingGroup() on the SwiftUI Menu 🎉 Thanks to @saschagordner.de who pointed me to a StackOverflow answer about the exact same issue: stackoverflow.com/a/79884587 Documentation about compositingGroup: shorturl.at/btdM6

Any idea how to fix this Liquid Glass visual bug? In my app, I have a #SwiftUI Menu that presents an overlay over the whole view. But the Menu stays visible for a short period of time until it goes below the overlay 🫤 Works fine on iOS 17/18. Code: gist.github.com/alpennec/31e...

New app analytics are finally live in App Store Connect! Time to explore 🥳 Next: dark mode? 🌚

Expected behaviour, not a regression nor a bug 🫡 Thanks Apple and the SwiftUI team for being reactive!

Dear SwiftUI, can you please fix the regressions you introduced on iOS 26? FB22043999 In my View, I read the dismiss value from the Environment. Whenever a Menu or Picker is opened, the View body is re evaluated 🤷🏻‍♂️ This unexpected behaviour doesn't happen on iOS 18.5 🙃

Lately, I’ve often had to approve transactions in my banking app when making in-app purchases (even free trial). It asks for approval even if I approved another purchase just a few minutes earlier. I wonder whether this added friction hurts conversion rates 🫤 Have you experienced this as well?

TIL SwiftUI has a pixelLength environment value. It's a shortcut to dividing 1 by the displayScale environment value as I did before 🙃 Documentation: developer.apple.com/documentatio...

I use .frame(in: .scrollView) to read a scroll view offset and show/hide a title. But I observe a jump in the offset if the content extends below the safe area (when there's no View above). Does adding the title change the frame I read? Should it? Code: gist.github.com/alpennec/388...

I often find myself wanting to log the same message when previewing my app in the Xcode canvas and when running it on a Simulator or a physical device. How would you handle using print() for preview and the unified logging system (Logger) at the same time without repeating?

Who A/B tested if localized prices actually bring more money or not at the end? I know it depends on the app but curious if it's worth checking. What test methodology have you used and what volume of data required to conclude? Do @revenuecat.com or @superwall.bsky.social have some insights? 👀

After the Swift SDK for Android, Swift in the browser with ElementaryUI 🤩 The best time to learn Swift was eleven years ago. The second best is now 😉 elementary.codes

Have you experienced this issue with your app accentColor not being respected, even without using Mixpanel? If I just and only access UIScreen.main.bounds in my App init, the accentColor is ignored. This page on SO gives other reasons like modifying UIAppearance: stackoverflow.com/questions/71...

TLDR about performances with Xcode Previews ⬇️ When you update: - an “inline” value: 🚀 - a stored property: 🐌 - a computed property: 🚀 So if you centralize your design constants at the top of a View for example, computed variables are the way to go 👌🏻

I dug a bit more in this issue where my accentColor is ignored by my SwiftUI apps when I initialize Mixpanel in my App init (early but required). I noticed it's due to the SDK accessing UIScreen.main.bounds.size... My fix is to comment this line ⬇️ More: github.com/mixpanel/mix...

Confirmed by Apple 🫡

One tip to speed up your SwiftUI previews 🤩 I wanted to centralize constants like opacity, spacing, or sizes used by my View to speed up prototyping. Stored properties: slow 🐌 as Xcode recompiles the file every time I tweak a value. Computed properties: instant updates 🏎️

SwiftUI AnyShapeStyle, yay or nay? 🤔 I've been using two foregroundStyle for my shaped view backgrounds: one with a Color (often a UIKit one: secondarySystemBackground) + another one with a HierarchicalShapeStyle. But we can get the same with AnyShapeStyle + BackgroundStyle.

Thanks Craig! 😉

Apple, don't be surprised if developers don't file feedback anymore in Feedback Assistant. I take the time to file detailed feedback with steps, device details + screen recording to help improve things for everyone. Please, don’t reply to ask for things I’ve already provided...

A solution suggested by @fatbobman.com is to "duplicate" the top/bottom content: one hidden in the safeAreaInset of each page + one visible/interactive in an overlay of the parent/container View (ZStack). Of course it depends on the onboarding design. Gist: gist.github.com/alpennec/2a3...

I'm building a custom #SwiftUI navigation flow for an app onboarding but I'm having layout issues when moving from steps with/without safeAreaInset content to steps without/with safeAreaInset content. See blue frame. Any idea how to fix this? Gist: gist.github.com/alpennec/e9c... @fatbobman.com

SwiftUI has been released more than 6 years ago but you still have to use UIDatePicker.appearance() to set a minuteInterval other than the default 1 minute to a date picker 🤦🏻‍♂️ Maybe mesh gradients are more used 🤷🏻‍♂️

TIL that we can create custom attributes for AttributedString 🤩 It's very useful for styling text while respecting localization, especially when the styled segments change per language. I specify each attributed segment directly in my string catalog translation, and voilà! ✨

Oops!…I Did It Again 😬 I renewed my Apple Developer Program membership! Here’s to another year of learning, building, shipping, failing, sharing, succeeding and doing it all over again. Let’s go! 🤪

You have to run the app on a physical device. If you’re running it on a simulator, the option is disabled in Xcode. And it doesn’t seem to be available for macOS apps.

TIL the @.Observable macro doesn't trigger updates for equatable properties starting with iOS 26. But for prior releases, we have to manually check equality for the object properties to improve our app performances. Thank you for the tip Steven!

TIL Xcode 26 has a View Debugging tool to show when a View is rendered called “Flash Updated Regions”. This seems very powerful and useful, I’ll make sure to débug my apps with that turned on.

How does localization work in Xcode for languages with regional variants? Can I just localize the “base” language (es, pt, fr)? For example, if I localize for Spanish, do I have to include also Spanish (Latin America) and Spanish (United States) or will it fallback to “es”?

To clarify, the issue I shared happens when a .glassEffect(.regular.interactive()) is used on a Button. A workaround for now is to disable the interactivity if a sheet is presented. But this bug doesn’t occur anymore on 26.1 beta 2 (23B5059e) so it seems Apple fixed it 🥳

Oh is that actually fixed on iOS 26.1 beta 2 (23B5059e)?! 😅

It turns out .glassEffect(.regular.interactive(), in: .circle) is actually buggy too 😱 Another shape appears when the button is touched & the finger is moved around 🤦🏻‍♂️ I only tested on a white background in light mode before but it’s clearly visible on a contrasting background…

Sigh 😔 On iOS 26, the touch gestures from a sheet are propagated below it and play the liquid glass effect on the controls 🫤 Luckily, it doesn’t trigger the button actions… Is there a fix for that?

Solution ⬇️ buttonStyle(.glass) = .glassEffect(.regular.interactive(), in: .circle)

Is it possible to replicate the style of a liquid glass toolbar button in #SwiftUI? Using buttonStyle(.glass) + buttomBorderShape(.circle) shows another circle within the button when touched 🫤 And glassEffect(in: .circle) doesn’t render the same visual effect when touched 😞

Apple pulled Indie App Santa from the App Store in September 2025 😱 Lately, it warned developers running Apps Gone Free campaigns… And removed apps buying keyword installs or ratings/reviews! Apple is clearly cracking down on apps that manipulate or influence the App Store.

In SwiftUI, clipShape and shape + stroke don’t give the same result 🫤 Is there a way to have the same radius when clipping is required?

If only there was an option to compare side by side iOS 18 vs iOS 26 (Liquid Glass) in Xcode Previews instead of having to manually switch between simulators… 🤔 FB20482528

Want to have a sheet "zoom out" of toolbar buttons in iOS 26 instead of sliding up from the bottom of the screen? Two SwiftUI ways: 1. ZoomNavigationTransition (sheet content) + matchedTransitionSource (button) 2. .popover (button) + .presentationCompactAdaptation(.sheet) ➡️ see below for video

PSA: in iOS 26, use the new SwiftUI safeAreaBar modifier instead of safeAreaInset to get the progressive blur at the top/bottom of a scroll view with custom content. Handy if you want bottom content without a tab bar or system toolbar for example. Link to the documentation ⬇️

I wish we could customise the charts in an app overview on App Store Connect Analytics 🔮 - Unique Device Impressions - Proceeds per Download (CPA est.) - Active Paid Subscriptions - Subscription Retention Rate - Introductory Offer Conversion Rate What would you like to see? 🤔

Be careful if you’re using the localizedDescription of an in-app purchase subscription period in your paywall UI… With an Xcode StoreKit configuration file, a weekly subscription has a period of “1 Week” ➡️ 4.99/week is displayed. In Sandbox (and real App Store), it’s “7 Days” ➡️ 4.99/day 🚨

A friend sent me an ips file for my app. When symbolicating it using the dSYM from the archive, is that expected some lines are still desymbolicated? Like SwiftData? Is there a trick? I tried to used Xcode "Devices and Simulators" to open the crash with the project but it fails (see screenshot).

Not one, not two, but three App Store shortcuts! 🤩 I’ve created a small webpage to host them all because iCloud links don’t update when I make changes. Plus, I fixed the bug where parsing sometimes failed 🥳 Make sure to grab the latest versions! Link to the webpage below 🧵

If you use @mixpanel.com in a SwiftUI app, read carefully 🚨 Does your app’s accent color defaults to blue in various places? Check if you've enabled automatic event tracking 🤯 And disable it NOW! It took me so long, I'm sooooo happy I finally found the reason! 🎉 More below ⬇️