Releasing our React Native app used to take a developer most of a day: bump versions, sign, build two platforms, upload, fill in notes. We moved it to fastlane lanes run from CI on a git tag. Project layout, versioning, signing with match, TestFlight and Play internal tracks, secrets, and what still needs a human.
Our delivery app tracks a driver's route during a delivery. After targeting Android 14, tracking stopped minutes after the screen turned off, and on some devices the app crashed when tracking started. Android 14 requires a declared foreground service type and permission. How we fixed it.
A practical crash triage workflow for iOS and Android teams: get readable stack traces with dSYMs and R8 mapping files, group crashes sensibly, reproduce with context, fix with a test and confirm the fix per release with staged rollouts.
After upgrading to React Native 0.79 with the New Architecture on by default, our in-house printer module came back null on iOS and crashed on Android. Bridge-only registration and direct bridge calls were the cause; here is the migration path.
Bumping targetSdk to 35 put our toolbar under the status bar and the Pay button under the navigation bar on Android 15 devices. Edge-to-edge is now enforced, so we handled window insets properly in both Views and Compose screens.
Our React Native app ran perfectly in debug, then the release APK closed instantly on every device. adb logcat showed a ClassNotFoundException for a class used through reflection by a native SDK, which R8 had removed during minification. How we read the crash, wrote keep rules and verified with mapping.txt.
Our API certificate renewal looked perfect in desktop Chrome, yet the Android app, curl and a partner's Java service all rejected it. The server sent only the leaf certificate without the intermediate. Serving the full chain fixed every client at once.
A new Android Studio with JDK 21 forced a Gradle upgrade, the Gradle upgrade pulled in AGP 8, and AGP 8 rejected two old Flutter plugins with Namespace not specified. How we untangled the Gradle, AGP, Kotlin and JDK chain.