Karol Binkowski

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Karol Binkowski

Karol Binkowski

@grzywn

SWE @ Software Mansion | driven by building and shiping scalable solutions 👾

Kraków, Polska Katılım Mayıs 2014
54 Takip Edilen72 Takipçiler
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Karol Binkowski
Karol Binkowski@grzywn·
I built Strava-style route animation using RN Skia 🎨 and Reanimated 4 🐎 In just 10 seconds, see your route and where you ran faster or slower — all from a GPX file. GPX coordinates → smooth pace-accurate motion. Lots of math. See it yourself below 👇
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Software Mansion
Software Mansion@swmansion·
We built a tool that lets Claude Code autonomously test your entire mobile app. It navigates your app, opens screens, reads the debug logs, finds performance problems, and hands you a structured report. All it takes is one prompt.
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Karol Binkowski
Karol Binkowski@grzywn·
If you are still waiting for your agent to do its work, spin up another one 🙌 Really powerful using Claude with worktrees or Github Copilot Agents tab 😁
Software Mansion@swmansion

3 Claude agents ➡️ 3 open-source libraries ➡️ 1 week. @blazejkustra_  ran 3 Claude agents in parallel for a week and shipped 3 open-source React Native libraries. Not one at a time. All three. In one week.  This is how we ship at @swmansion, so if you're building something hard, you know where to find us. 📩 And if you want to read more about Błażej's workflow, check the comments:

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Tomasz Sapeta 𝝠
Tomasz Sapeta 𝝠@tsapeta·
Really proud of this release 🥹 The changelog only has a small blurb on the iOS native modules, but it was a huge rewrite — Swift now talks to JSI directly via Swift/C++ interop, no more Objective-C++ middle layer. Fewer language boundaries to cross, less overhead, faster calls ⚡️ Full write-up coming soon.
Expo@expo

We just cut the SDK 56 beta 😅 ◆ 50%+ faster iOS builds (precompiled XCFrameworks) ◆ 40% faster cold starts on Android ◆ Expo UI is stable ◆ iOS widgets are stable ◆ expo-router rebuilt from scratch ◆ Inline native modules ◆ Brownfield multi-app support The obvious themes are speed and stability. But there are a lot of other interesting changes (like Expo Router decoupling itself form React Navigation). Get all the nuance and detail in the changelog below ↓

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Karol Binkowski
Karol Binkowski@grzywn·
@vlavuc I use already collected and exported .gpx data, so I don't track the movement myself 😄
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Vladimir Vucetic
Vladimir Vucetic@vlavuc·
@grzywn What do you use for tracking movement expo-locations or something else?
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Karol Binkowski
Karol Binkowski@grzywn·
I built Strava-style route animation using RN Skia 🎨 and Reanimated 4 🐎 In just 10 seconds, see your route and where you ran faster or slower — all from a GPX file. GPX coordinates → smooth pace-accurate motion. Lots of math. See it yourself below 👇
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Maaz jr 🦅
Maaz jr 🦅@maazscript·
@grzywn This is Amazing… do you have the source on GitHub??
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Karol Binkowski
Karol Binkowski@grzywn·
@DaehyeonMun Thank you! It calculates positions for each tile and creates background in a similar way like Leaflet does. Then it's overlayed using React Native Skia canvas, which draws and display the path on the map based on precalculated point coordinates in a time-series 😁
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Daehyeon 대현
Daehyeon 대현@DaehyeonMun·
@grzywn Great work! I heard it requires lots of math to draw paths in the right position in a map UI. Did you overlay skia cavans over the map? or is the map component built with Skia?
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Karol Binkowski
Karol Binkowski@grzywn·
We've just released a JSI part for our React Native Best Practices skill 🙌 Now you can use the BEST practices when it comes to bridging the worlds between C++ and JavaScript. Test it on your codebase and see how you can improve your JSI code today 💪
Software Mansion@swmansion

We updated our React Native Best Practices skill to include JSI ⚛️ Use it today to help your agents bridge C++ ↔ JS code npx skills add software-mansion-labs/skills --skill react-native-best-practices

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Software Mansion
Software Mansion@swmansion·
Launching SimCam – a tool that finally lets you test camera features directly in the iOS simulator! 🚀 🎦 Stream video from your Mac's built-in or external camera, inject an image or video, or generate a QR code.
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Peter Piekarczyk (🥧🚗🐥)
Peter Piekarczyk (🥧🚗🐥)@peterpme·
My favorite react native android adb commands: - adb logcat --pid=$(adb shell pidof <pkg>) - adb shell pm list packages | grep <app> - adb shell pidof <pkg> - adb install -r app.apk - adb exec-out screencap -p > screen.png - adb pull /sdcard/<file> ./ What am I missing?
Peter Piekarczyk (🥧🚗🐥) tweet media
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Software Mansion
Software Mansion@swmansion·
Say hello to React Native Audio API 0.12! From now, you can enjoy: ➡️ Long-form audio: new audio component for seamless playback of large files, ➡️ Recording rotation: support for rotated recording files for better file management, ➡️ AudioParam refactor for 100% Web Audio API compatibility, ➡️ Stability: massive bugfix haul for a smoother dev experience. Upgrade now to level up your app's sound engine! 🎸
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Karol Binkowski
Karol Binkowski@grzywn·
Wrote my first @swmansion blog post 🎉 TIL: Claude Code is surprisingly good at the planning phase — not just writing code. Also: why precision in agent communication matters more than fancy prompts. ~11 min read: swmansion.com/blog/how-we-bu…
Software Mansion@swmansion

60 clap buttons across 17 articles, injected automatically via a Remark plugin. 👀 We used navigator.sendBeacon() instead of debounce. One request per session, fires on tab close. Read @grzywn's take on how we built it with Claude Code: swmansion.com/blog/how-we-bu…

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Keşfet

@craftzdog @vlavuc @maazscript @DaehyeonMun @swmansion @elonmusk @BarackObama @taylorswift13