React Native 0.86 in 2026: Edge-to-Edge Android, DevTools and Interview Questions
Master React Native 0.86 with edge-to-edge Android 15 support, DevTools improvements, and practical interview questions. Complete guide with code examples.
React Native
MOBILE
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.
What you'll learn
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)
Key topics to master
The most important concepts to understand this technology and ace your interviews
1
React: JSX, Virtual DOM, reconciliation, hooks (useState, useEffect, useCallback)
2
React Native: native bridge, native vs web components, threading model
3
Core Components: View, Text, Image, ScrollView, FlatList, SectionList
4
Platform API: Platform.OS, Platform.select, platform-specific code
5
Styling: StyleSheet, Flexbox layout, Dimensions, responsive design
6
Navigation: React Navigation (Stack, Tab, Drawer, nested navigators)
7
State management: Context API, Redux Toolkit, Zustand, Recoil
8
Async operations: useEffect, fetch, axios, React Query for server state
9
Persistence: AsyncStorage, SecureStore, react-native-mmkv, SQLite
10
Native modules: creating native modules, linking libraries, autolinking
11
Expo vs Bare React Native: pros/cons, prebuild, config plugins
12
Permissions: react-native-permissions, requesting permissions, handling denials
13
Animations: Animated API, Reanimated 2, LayoutAnimation, gestures (Gesture Handler)
14
Networking: fetch, axios, WebSocket, error handling, retry logic
15
Forms: controlled components, React Hook Form, validation (Yup, Zod)
16
Testing: unit tests (Jest), component tests, E2E (Detox, Maestro)
17
Performance: FlatList optimization, useMemo, useCallback, Hermes, Flipper
18
Push notifications: Firebase Cloud Messaging, Expo Notifications, local notifications
19
Maps and location: react-native-maps, Geolocation API, background location
20
Build and deployment: EAS Build, Fastlane, App Store/Play Store, OTA updates
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