Crashes Only in the Release Build — Rescuing Classes R8 Stripped in Expo (Android)
I turned on R8 code shrinking to slim down an AAB, and one screen started crashing only in production. Here is how I traced the stripped class through mapping.txt and added keep rules via expo-build-properties.
When Your Android Vitals ANR Rate Climbs: Notes on Keeping the Main Thread Free in React Native
How I traced and fixed a rising Android Vitals ANR rate in a Rork-built React Native app, plus the main-thread rules I rolled out across six apps in production.
Fixing the 'Signed With the Wrong Key' Error When Uploading a Rork App to Google Play
Your Rork app builds fine but Google Play rejects the upload with 'signed with the wrong key'? Here's how to tell which signing key is involved and the exact steps to fix it for each build setup.
Two Weeks of Maintenance After v2.1.0 — Running Crashlytics Triage Through Claude in Chrome
Notes from operating Beautiful 4K/HDR Wallpapers v2.1.0 and Ukiyo-e Wallpapers v1.8.0 through phased rollout. Defensive RecyclerView copies, Glide desugaring, drawable-nodpi placement, and what I now hand off to Claude in Chrome every morning.
Diagnosing 'Network request failed' That Only Hits Android Emulator in Rork
Your fetch returns fine in the iOS simulator but throws 'Network request failed' the moment you switch to Android. Here is the diagnosis order I use to separate localhost, cleartext, certificate, and proxy issues, with code that actually compiles.
Adding Slideshow and Page Jump to My Android Wallpaper Apps
Implementation notes from adding slideshow, a page-jump slider, and an ad-free option to the Android editions of Beautiful 4K/HDR Wallpapers and Ukiyo-e Wallpapers.
expo-haptics Silent on Production Builds in Rork — Simulator, Device, and Low Power Mode Pitfalls
Your Rork-generated app taps the favorite button and nothing happens on TestFlight — but Expo Go works fine. Lessons from a wallpaper indie shop on the five most common reasons expo-haptics goes silent, with working call patterns for each.
A month of running Rork and Claude on Xcode side by side — where each one ended up fitting
Notes from an indie developer who has shipped wallpaper apps on iOS and Android since 2014. After a month of keeping both Rork and Claude on Xcode open on the same desk, the work that fit each one turned out to be more obvious than I expected.
Fixing 'Row too big to fit into CursorWindow' on Android When AsyncStorage Holds Too Much in Rork
When a React Native app generated with Rork stores large JSON or image metadata in AsyncStorage, Android can throw a Row too big to fit into CursorWindow exception. Here are the practical fixes — MMKV migration, chunked keys, payload trimming, and compression — explained from real wallpaper-app experience.
Images Vanishing After Play Store Release — Fixing drawable-nodpi in Rork Android Apps
After publishing a Rork-generated Android app to the Play Store, images disappeared on low-density devices. The culprit: Play Store's density APK splits and how they handle drawable-nodpi resources. A real-world fix from 12 years of app development.
Is Rork's Generated Code Production-Ready? 3 Pitfalls I Found After 50M Downloads
After 50M cumulative app downloads, I tested Rork's generated code against real production scenarios and found 3 recurring crash patterns. Here's what to audit before shipping Rork-generated code, with concrete before/after examples.
Why Nesting Your Android Ad Gate Logic Causes Hard-to-Debug Bugs — Fixing It with Parallel Structure
A nested ad gate bug in Beautiful HD Wallpapers v2.1.0 led me to rethink how ad-free logic should be structured in Android apps. The parallel structure pattern I use now also improves Rork-generated code.