Axel Le Pennec (@alpennec) / X

Axel Le Pennec

10.8K posts

Axel Le Pennec

@alpennec

Building apps for Apple platforms (Swift/SwiftUI). Here to learn & share. Formerly @tryriotdotcom, @efounders/@joinhexa, @fabernovel.

Paris, France

Born August 31

Joined March 2009

Pinned
Axel Le Pennec
@alpennec
Jun 17
I'm looking for a sample SwiftUI project using the AppIntents framework to read/write data from/to Core Data (and/or SwiftData). Do I use the AppDependencyManager thing? A database singleton? Do I use the main thread? A background thread/context? Any idea? Thank you!
6.1K
Axel Le Pennec
@alpennec
May 20, 2025
So much Aero Glass blurry transparency effect at #WWDC25 🪩
107K
Axel Le Pennec
@alpennec
Feb 22, 2025
Replying to @DylanMcD8
The solution already exists: it is called wireless. 🔋 Qi-certified charger for charging 🎧 Bluetooth/Wi-Fi for transferring data Stop EU-bashing please 😉
60K
Axel Le Pennec
@alpennec
May 28, 2025
It was way easier than I thought actually 😄 All SwiftUI, works on iOS 16+.
00:00
50K
Axel Le Pennec
@alpennec
Oct 30, 2025
TIL Xcode 26 has a View Debugging tool to show when a View is rendered called “Flash Updated Regions”. This seems very powerful, I’ll make sure to débug my apps with that turned on.
55K
Axel Le Pennec
@alpennec
Apr 4, 2024
In #SwiftUI, is there a way to present a sheet whose height is based on the content size, using detents? And if the content doesn't fit, it would be placed in a scroll view (not enough space/dynamic type size). I want to replicate rounded sheets used by iOS. Any idea?
88K
Axel Le Pennec
@alpennec
Aug 21, 2025
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 ⬇️
00:00
26K
Axel Le Pennec
@alpennec
Jun 14, 2025
The new BGContinueProcessingTask allows a work to continue even after the app is backgrounded, with a system providing UI to communicate progress! No more LiveActivities to provide feedback on tasks being performed by the app 🤩 Documentation: developer.apple.com/documentation/… #WWDC25
19K
Axel Le Pennec
@alpennec
Aug 22, 2025
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)
00:00
00:00
17K
Axel Le Pennec
@alpennec
Apr 1, 2024
Excited to announce my first day at #Apple! 🎉 Thrilled to be part of the #SwiftUI team, shaping the future of app development. What feature are you most eager for? Let me know, I'll make sure it gets heard!
32K
Axel Le Pennec
@alpennec
Oct 6, 2023
I finally found how to have the nice #SwiftUI Text+timer style animation in an app (the default behaviour in a widget). I just missed to specify a transaction for the Text. It's working like a charm now! .transaction { t in t.animation = .default } cc @frboulais 🎁
00:00
Axel Le Pennec
@alpennec
Sep 5, 2023
I'm trying to use .contentTransition(.numericText()) on a Text with a timer style in #SwiftUI View (not used in a widget), but it's not working. What am I missing? 🤔
44K
Axel Le Pennec
@alpennec
Feb 21, 2024
Replying to @SebJVidal and @pixelmator
How to do it the easy way directly in #SFSymbols: 1. Choose an existing SF Symbol (book.fill) 2. Right click + "Duplicate as Custom Symbol" 3. In Custom Symbols, right click + "Combine Symbol with Component" 4. Select the component your want (badge.plus) Voilà! 🪄
20K
Axel Le Pennec
@alpennec
Oct 10, 2024
xcrun simctl --set previews delete all to the rescue 🫡 #Xcode #iOSDev #SwiftUI
16K
Axel Le Pennec
@alpennec
Aug 25, 2025
So on one side: the @appmafia_ course. $1,000 for black-hat, shady tactics from questionably unethical apps built by Gen Z folks. On the other: "Everything but the Code" by @twostraws. $80 for proven insights and advices from Apple Award–winning apps built by renowned teams. 🤔
36K