React Native

React Native

React Native is a framework for building native mobile applications using React. Here's what I've learned over the years.

Getting Started

React Native allows you to build mobile apps using JavaScript and React. The key difference from web development is that you're working with native components instead of DOM elements.

Core Concepts

Components

React Native provides a set of core components like View, Text, Image, and ScrollView that map to native UI elements.

Styling

Styling in React Native uses a subset of CSS implemented through JavaScript objects. Flexbox is the primary layout system.

Navigation is typically handled by libraries like React Navigation or Expo Router, providing native-feeling transitions and gestures.

Performance Tips

  • Use FlatList for long lists instead of mapping over arrays
  • Implement proper memoization with React.memo and useMemo
  • Avoid inline function definitions in render methods
  • Use native modules for computationally intensive tasks

Common Patterns

State Management

Redux, MobX, and Zustand are popular choices for global state management in React Native apps.

API Integration

Use libraries like Axios or the native Fetch API for network requests. Consider implementing proper error handling and loading states.