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Krzysztof Magiera

@kzzzf • 15,166 subscribers

R&D @swmansion. Made react-native (@meta), reanimated, rn-screens, Radon IDE, https://t.co/oO7e4kl04h

Shorts

SwiftUI isn’t native and here’s why SwiftUI apps may sometimes feel janky. It ditches the key element that made animations run so smoothly on iOS since the original iPhone: Core Animation. In SwiftUI animations run in-app without CA backing. Block the main thread: SwiftUI ball stalls while UIKit’s keeps moving on the render server.

SwiftUI isn’t native and here’s why SwiftUI apps may sometimes feel janky. It ditches the key element that made animations run so smoothly on iOS since the original iPhone: Core Animation. In SwiftUI animations run in-app without CA backing. Block the main thread: SwiftUI ball stalls while UIKit’s keeps moving on the render server.

619,441 views

“Pinch to fold” is wildly satisfying 🤩

“Pinch to fold” is wildly satisfying 🤩

224,719 views

Xcode 27 Device Hub can now use your Mac’s camera or desktop as a camera source with zero changes to your app!

Xcode 27 Device Hub can now use your Mac’s camera or desktop as a camera source with zero changes to your app!

80,085 views

tip: You can rearrange menu bar icons by holding ⌘ and dragging. Move important items to the right so they are not eaten by the notch

tip: You can rearrange menu bar icons by holding ⌘ and dragging. Move important items to the right so they are not eaten by the notch

11,918 views

Zero config react-scan for React Native in Radon IDE available under single switch. Would you use it? 👀

Zero config react-scan for React Native in Radon IDE available under single switch. Would you use it? 👀

28,933 views

Big Radon IDE update: 🏝️ Use React Query w/o extra config ⚛ Visualize renders with React Scan 🏎️ Use JS sampling profiler 💪 Tons of stability improvements

Big Radon IDE update: 🏝️ Use React Query w/o extra config ⚛ Visualize renders with React Scan 🏎️ Use JS sampling profiler 💪 Tons of stability improvements

20,851 views

We published new beta of react-native-ide today with a huge number of updates. One frequent issue was with the simulator getting a bit choppy. We found a way to speed the processing up 5x (with more updates incoming). Testing it with new useVideo hook from react-native-skia

We published new beta of react-native-ide today with a huge number of updates. One frequent issue was with the simulator getting a bit choppy. We found a way to speed the processing up 5x (with more updates incoming). Testing it with new useVideo hook from react-native-skia

22,823 views

Release notes page on this one never ends 🤯Absolutely massive release. Congrats to kkafar and the team on this one 👏 👏 👏

Release notes page on this one never ends 🤯Absolutely massive release. Congrats to kkafar and the team on this one 👏 👏 👏

15,202 views

Added Expo Dev Client support to the IDE and used Daimo Pay open source React Native app to test it

Added Expo Dev Client support to the IDE and used Daimo Pay open source React Native app to test it

14,667 views

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SwiftUI isn’t native and here’s why SwiftUI apps may sometimes feel janky. It ditches the key element that made animations run so smoothly on iOS since the original iPhone: Core Animation. In SwiftUI animations run in-app without CA backing. Block the main thread: SwiftUI ball stalls while UIKit’s keeps moving on the render server.
0:20
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SwiftUI isn’t native and here’s why SwiftUI apps may sometimes feel janky. It ditches the key element that made animations run so smoothly on iOS since the original iPhone: Core Animation. In SwiftUI animations run in-app without CA backing. Block the main thread: SwiftUI ball stalls while UIKit’s keeps moving on the render server.

Krzysztof Magiera

619,441 views • 1 month ago

In case you ever wondered how to scan that QR code with your Simulator 😉
0:21
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In case you ever wondered how to scan that QR code with your Simulator 😉

Krzysztof Magiera

229,664 views • 4 months ago

Yesterday at RNCK I demoed our new React Native IDE project we developed Software Mansion. Check out the thread for details on each specific feature from the clip
3:41
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Yesterday at RNCK I demoed our new React Native IDE project we developed Software Mansion. Check out the thread for details on each specific feature from the clip

Krzysztof Magiera

333,329 views • 2 years ago

The iOS Simulator has never had a camera. SimCam fixes that! Your simulator can use front, back or both cameras, each with its own source you control from the menu bar.
0:22
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The iOS Simulator has never had a camera. SimCam fixes that! Your simulator can use front, back or both cameras, each with its own source you control from the menu bar.

Krzysztof Magiera

65,397 views • 5 months ago

Found the ultimate setup for iOS Simulator camera. Front camera: uses your Mac webcam Back camera: whatever's behind the Simulator window
0:33
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Found the ultimate setup for iOS Simulator camera. Front camera: uses your Mac webcam Back camera: whatever's behind the Simulator window

Krzysztof Magiera

27,511 views • 4 months ago

Safari in the iOS Simulator finally has a camera! In the latest update of SimCam we add mobile Safari support. Enjoy!
0:26
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Safari in the iOS Simulator finally has a camera! In the latest update of SimCam we add mobile Safari support. Enjoy!

Krzysztof Magiera

13,583 views • 4 months ago

SimCam app has a CLI letting agents control the camera on iOS simulator! This makes it possible to test camera enabled workflows in your apps (below I run claude to test barcode scanner app on a number of pre-made assets)
0:44
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SimCam app has a CLI letting agents control the camera on iOS simulator! This makes it possible to test camera enabled workflows in your apps (below I run claude to test barcode scanner app on a number of pre-made assets)

Krzysztof Magiera

11,384 views • 5 months ago

New React Debugger (codename Fusebox) support in the IDE achieved internally
0:23
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New React Debugger (codename Fusebox) support in the IDE achieved internally

Krzysztof Magiera

24,588 views • 2 years ago

Adding an option to react-native-ide that resets app privacy settings allowing for testing of flows where you ask users for permissions (location/contacts/etc).
0:23
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Adding an option to react-native-ide that resets app privacy settings allowing for testing of flows where you ask users for permissions (location/contacts/etc).

Krzysztof Magiera

24,763 views • 2 years ago

React Native builds sometimes takes long. Was exploring ways to make that time pass faster in Radon IDE. Wdyt?
0:39
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React Native builds sometimes takes long. Was exploring ways to make that time pass faster in Radon IDE. Wdyt?

Krzysztof Magiera

17,109 views • 1 year ago

Radon IDE 0.22 is out: 🏎️ up to 20% faster screen streaming 🧘 many stability improvements for “stuck on waiting” screen 👉 touch indicators 🔗 deeplink launcher 4️⃣ expo router v4 support 📎 paste from clipboard
0:29
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Radon IDE 0.22 is out: 🏎️ up to 20% faster screen streaming 🧘 many stability improvements for “stuck on waiting” screen 👉 touch indicators 🔗 deeplink launcher 4️⃣ expo router v4 support 📎 paste from clipboard

Krzysztof Magiera

13,243 views • 1 year ago

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