React Native notes
Practical notes from real mobile product work, covering React Native, Expo, architecture, performance, security, testing, and production releases.
react-native-bg-geolocation is a React Native background geolocation library for reliable location tracking in the background and after force-quit — with iOS Location Push, Android headless JS, geofencing, motion detection, and Socket.IO + REST delivery.
Read articleA practical guide for reducing startup time, improving rendering, and fixing common production bottlenecks.
Read articleA decision guide for choosing the right React Native setup for a product and team.
Read articleA practical approach to structuring production React Native applications for long-term growth.
Read articleHow to choose between local state, Context, Redux, Zustand, React Query, and other tools.
Read articleA debugging guide for memory growth, cleanup problems, crashes, and long-running sessions.
Read articleMigration tradeoffs and production checks for Fabric, TurboModules, JSI, and modern React Native.
Read articleA practical path for teams that want faster mobile delivery with Expo and React Native.
Read articleSwift, SwiftUI, UIKit, native modules, releases, and production support for iPhone applications.
Read articleKotlin, Jetpack Compose, Java, native modules, releases, and production Android delivery.
Read articleA guide for teams comparing one shared codebase across iOS, Android, and the web.
Read articleWhat product teams should expect when hiring senior help for architecture, development, and release ownership.
Read articleA practical checklist for founders choosing an experienced engineer for mobile delivery.
Read articleSecure storage, SSL pinning, jailbreak and root detection, protected environments, and anti-tampering.
Read articleIsolating production issues, protecting critical flows, and building reliable App Store and Play Store releases.
Read articleHow to add scalable, crisp icons to a React Native app with react-native-vector-icons — installation, usage, custom icon sets, and common pitfalls.
Read articleA practical guide to React Native Reanimated — running 60fps animations on the UI thread with shared values, worklets, and gesture-driven motion.
Read articleHow to build reliable taps, swipes, pans, and pinches in React Native with react-native-gesture-handler and its Gesture API.
Read articleHow to use react-native-svg to draw scalable vector graphics, icons, charts, and custom shapes in a React Native app.
Read articleHow to add a high-performance camera to a React Native app with react-native-vision-camera — permissions, capture, and frame processors.
Read articleHow to request and manage runtime permissions in React Native with react-native-permissions — camera, location, notifications, and graceful denial handling.
Read articleHow to build accessible dropdowns, pickers, and select menus in React Native — native Picker, community dropdown libraries, and UX tradeoffs.
Read articleHow to present modals, dialogs, and bottom sheets in React Native — the built-in Modal, react-native-modal, and gesture-driven sheets.
Read articleHow to validate forms in React Native — controlled inputs, schema validation, and libraries like React Hook Form with clear, accessible error states.
Read articleHow to let users pick or capture photos in React Native with react-native-image-picker — permissions, camera vs library, and handling results.
Read articleHow to integrate maps in React Native with react-native-maps — markers, custom regions, performance with many pins, and provider setup.
Read articleHow to use react-native-webview to embed web pages and bridge JavaScript between native and web in a React Native app — safely and performantly.
Read articleHow to make HTTP requests on Android with Retrofit — type-safe APIs, coroutines, error handling, and how it fits a React Native native module.
Read articleA practical guide to Kotlin coroutines on Android — structured concurrency, scopes, dispatchers, and Flow for asynchronous work without callback hell.
Read articleHow to store key-value and typed data on Android with Jetpack DataStore — the coroutine- and Flow-based replacement for SharedPreferences.
Read articleHow fragments work on Android and how to build a tabbed interface with TabLayout and ViewPager2 — lifecycle, navigation, and state.
Read articleHow to use the Android NumberPicker widget for selecting numeric values — setup, ranges, formatting, and styling in Android Studio.
Read articleWhat the Android NDK is and when to use it — calling C/C++ from Kotlin via JNI, performance-critical code, and its role in React Native.
Read articleHow to build modern Android UIs with Material 3 in Jetpack Compose — dynamic color, theming, components, and Material You expressive design.
Read articleA practical explanation of Android's Gradle build — build.gradle, the Android Gradle Plugin, dependencies, build types, and flavors.
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