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React Native

React Native lets you build mobile apps using only JavaScript and React. It uses the same design as React, letting you compose a rich mobile UI from declarative components.

Why Choose React Native?

Cross-Platform

Write once, run on both iOS and Android with native performance

Share up to 95% of code between platforms while maintaining native look and feel

Native Performance

Direct access to native APIs and components for optimal performance

Uses native components instead of web views for better performance

Hot Reloading

See changes instantly without losing application state

Fast development cycle with immediate feedback on code changes

Large Community

Extensive ecosystem with thousands of libraries and active community

Backed by Meta (Facebook) with strong community support and resources

JavaScript/TypeScript

Use familiar web technologies to build mobile applications

Leverage existing JavaScript knowledge and npm ecosystem

Native Modules

Easily integrate native code when needed for platform-specific features

Bridge between JavaScript and native code for custom functionality

React Native Learning Path

Setup & Environment

Beginner2-3 hours

Complete development environment setup for React Native development

Node.jsReact Native CLIAndroid StudioXcodeEmulators

Components & UI

Intermediate4-5 hours

Master React Native components, styling, and responsive layouts

Core ComponentsStyleSheetFlexboxListsFormsPlatform Styles

Navigation

Intermediate3-4 hours

Implement navigation patterns with React Navigation library

Stack NavigationTab NavigationDrawer NavigationDeep LinkingNavigation Hooks

Deployment

Advanced5-6 hours

Build, sign, and deploy your apps to Google Play Store and Apple App Store

App SigningBuild OptimizationApp Store GuidelinesCI/CDMonitoring

Quick Start Guide

Quick Setup

# Install React Native CLI
npm install -g @react-native-community/cli

# Create a new project
npx react-native init MyAwesomeProject

# Navigate to project directory
cd MyAwesomeProject

# Start Metro bundler
npx react-native start

# Run on Android (in another terminal)
npx react-native run-android

# Run on iOS (macOS only)
npx react-native run-ios

Basic Component Example

import React, { useState } from 'react';
import {
  View,
  Text,
  TextInput,
  TouchableOpacity,
  StyleSheet,
  Alert,
} from 'react-native';

const App = () => {
  const [name, setName] = useState('');
  const [count, setCount] = useState(0);

  const handlePress = () => {
    Alert.alert('Hello!', `Hello ${name || 'World'}!`);
  };

  return (
    <View style={styles.container}>
      <Text style={styles.title}>Welcome to React Native!</Text>
      
      <TextInput
        style={styles.input}
        placeholder="Enter your name"
        value={name}
        onChangeText={setName}
      />
      
      <TouchableOpacity style={styles.button} onPress={handlePress}>
        <Text style={styles.buttonText}>Say Hello</Text>
      </TouchableOpacity>
      
      <View style={styles.counter}>
        <Text style={styles.counterText}>Count: {count}</Text>
        <TouchableOpacity
          style={styles.counterButton}
          onPress={() => setCount(count + 1)}
        >
          <Text style={styles.buttonText}>+</Text>
        </TouchableOpacity>
      </View>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#f5f5f5',
    padding: 20,
  },
  title: {
    fontSize: 24,
    fontWeight: 'bold',
    marginBottom: 30,
    color: '#333',
  },
  input: {
    width: '100%',
    height: 50,
    borderWidth: 1,
    borderColor: '#ddd',
    borderRadius: 8,
    paddingHorizontal: 15,
    marginBottom: 20,
    backgroundColor: 'white',
  },
  button: {
    backgroundColor: '#007AFF',
    paddingHorizontal: 30,
    paddingVertical: 15,
    borderRadius: 8,
    marginBottom: 20,
  },
  buttonText: {
    color: 'white',
    fontSize: 16,
    fontWeight: 'bold',
  },
  counter: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 15,
  },
  counterText: {
    fontSize: 18,
    color: '#333',
  },
  counterButton: {
    backgroundColor: '#34C759',
    width: 40,
    height: 40,
    borderRadius: 20,
    justifyContent: 'center',
    alignItems: 'center',
  },
});

export default App;

React Native Project Ideas

🟢 Beginner Projects

• Weather App: Display current weather and forecasts
• To-Do List: Task management with local storage
• Calculator: Scientific calculator with history
• News Reader: Fetch and display news articles
• Timer/Stopwatch: Multiple timers with notifications
• Expense Tracker: Track daily expenses with categories

🟡 Intermediate Projects

• Social Media App: Posts, likes, comments with authentication
• E-commerce App: Product catalog with shopping cart
• Chat Application: Real-time messaging with Socket.io
• Fitness Tracker: Track workouts and progress
• Recipe App: Search recipes with favorites and meal planning
• Music Player: Audio playback with playlists

🔴 Advanced Projects

• Video Streaming: Netflix-like app with offline viewing
• Ride Sharing: Uber-like app with maps and payments
• Banking App: Secure transactions with biometric auth
• AR Shopping: Augmented reality product visualization
• IoT Controller: Control smart home devices
• Cryptocurrency Wallet: Secure crypto transactions

Popular Libraries & Tools

Navigation

• React Navigation
• React Native Navigation
• React Router Native

State Management

• Redux Toolkit
• Zustand
• MobX

UI Components

• NativeBase
• React Native Elements
• UI Kitten

Networking

• Axios
• React Query
• Apollo GraphQL

Storage

• AsyncStorage
• Realm
• SQLite

Testing

• Jest
• Detox
• React Native Testing Library

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