Cross-platform mobile development with React to build native iOS and Android apps using JavaScript/TypeScript. React-based architecture with native components, hot reloading, and native API access to create performant mobile applications with a single codebase.
Modern React with hooks, Context API and functional components
Native components (View, Text, Image, ScrollView, FlatList)
Expo for rapid development with integrated tools and OTA updates
React Navigation for native navigation (Stack, Tab, Drawer)
StyleSheet and Flexbox for responsive and performant styling
State management (Redux Toolkit, Zustand, React Query, Context)
AsyncStorage and SecureStore for data persistence
Native modules for native code integration (Kotlin/Swift)
Comprehensive testing (Jest, React Native Testing Library, Detox E2E)
Performance (Hermes engine, lazy loading, FlatList optimization)
The most important concepts to understand this technology and ace your interviews
React: JSX, Virtual DOM, reconciliation, hooks (useState, useEffect, useCallback)
React Native: native bridge, native vs web components, threading model
Core Components: View, Text, Image, ScrollView, FlatList, SectionList
Platform API: Platform.OS, Platform.select, platform-specific code
Styling: StyleSheet, Flexbox layout, Dimensions, responsive design
Navigation: React Navigation (Stack, Tab, Drawer, nested navigators)
State management: Context API, Redux Toolkit, Zustand, Recoil
Async operations: useEffect, fetch, axios, React Query for server state
Persistence: AsyncStorage, SecureStore, react-native-mmkv, SQLite
Native modules: creating native modules, linking libraries, autolinking
Expo vs Bare React Native: pros/cons, prebuild, config plugins
Permissions: react-native-permissions, requesting permissions, handling denials
Animations: Animated API, Reanimated 2, LayoutAnimation, gestures (Gesture Handler)
Networking: fetch, axios, WebSocket, error handling, retry logic
Forms: controlled components, React Hook Form, validation (Yup, Zod)
Testing: unit tests (Jest), component tests, E2E (Detox, Maestro)
Performance: FlatList optimization, useMemo, useCallback, Hermes, Flipper
Push notifications: Firebase Cloud Messaging, Expo Notifications, local notifications
Maps and location: react-native-maps, Geolocation API, background location
Build and deployment: EAS Build, Fastlane, App Store/Play Store, OTA updates
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