React Native Setup

1. Node.js 18+ must be installed

2. Create a new project with React Native CLI:

npx @react-native-community/cli init ProjectName

3. Alternative: With Expo (recommended for beginners):

npx create-expo-app ProjectName
cd ProjectName

4. For Android: Install Android Studio and Android SDK

5. For iOS (macOS): Install Xcode

6. Java Development Kit (JDK 17):

sudo apt install openjdk-17-jdk

7. Set environment variables (.bashrc):

export ANDROID_HOME=$HOME/Android/Sdk
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/platform-tools

8. Run on Android:

npx react-native run-android

9. Run on iOS (macOS):

npx react-native run-ios

10. Metro bundler:

npx react-native start