This is a new React Native project, bootstrapped using @react-native-community/cli.

System Requirements

Before getting started, ensure you have the following installed on your system:

Required Software

• Node.js: >= 20.x (recommended: latest LTS version)

  • Download from nodejs.org
  • Verify installation: node --version

• Package Manager: Choose one of the following:

  • npm (comes with Node.js)
  • Yarn (recommended for this project)
    • Install: npm install -g yarn
    • Verify installation: yarn --version

Platform-Specific Requirements

For iOS Development (macOS only)

• macOS: Latest version recommended
• Xcode: Latest version from Mac App Store
• Xcode Command Line Tools: Install via xcode-select --install
• CocoaPods: Ruby gem used for iOS dependency management
  • Install: sudo gem install cocoapods
  • Verify: pod --version
• Ruby: Usually pre-installed on macOS

For Android Development

• Java Development Kit (JDK): JDK 17 or higher
  • Download from Oracle or use OpenJDK
• Android Studio: Latest version
  • Download from developer.android.com
• Android SDK: Installed via Android Studio
  • Android SDK Platform 33 or higher
  • Android SDK Build-Tools
• Environment Variables:
  • ANDROID_HOME pointing to your Android SDK location
  • JAVA_HOME pointing to your JDK installation
• Android Emulator or physical device with USB debugging enabled

For Web Development

• Modern Web Browser: Chrome, Firefox, Safari, or Edge (latest versions)
• No additional setup required - Webpack and dev server are included

Development Tools (Optional but Recommended)

• Git: For version control
• VS Code or Android Studio / Xcode: For code editing and debugging
• React Native Debugger: For debugging React Native apps

Verification

After installation, verify your setup:

# Check Node.js version
node --version

# Check package manager
npm --version  # or yarn --version

# For iOS (macOS only)
xcodebuild -version
pod --version

# For Android
java -version
adb version

Note: For detailed setup instructions, refer to the official React Native Environment Setup Guide.

Getting Started

Note: Make sure you have completed the Set Up Your Environment guide before proceeding.

Step 1: Start Metro

First, you will need to run Metro, the JavaScript build tool for React Native.

To start the Metro dev server, run the following command from the root of your React Native project:

# Using npm
npm start

# OR using Yarn
yarn start

Step 2: Build and run your app

With Metro running, open a new terminal window/pane from the root of your React Native project, and use one of the following commands to build and run your Android or iOS app:

Android

# Using npm
npm run android

# OR using Yarn
yarn android

iOS

For iOS, remember to install CocoaPods dependencies (this only needs to be run on first clone or after updating native deps).

The first time you create a new project, run the Ruby bundler to install CocoaPods itself:

bundle install

Then, and every time you update your native dependencies, run:

bundle exec pod install

For more information, please visit CocoaPods Getting Started guide.

# Using npm
npm run ios

# OR using Yarn
yarn ios

If everything is set up correctly, you should see your new app running in the Android Emulator, iOS Simulator, or your connected device.

This is one way to run your app — you can also build it directly from Android Studio or Xcode.

Step 3: Modify your app

Now that you have successfully run the app, let's make changes!

Open App.tsx in your text editor of choice and make some changes. When you save, your app will automatically update and reflect these changes — this is powered by Fast Refresh.

When you want to forcefully reload, for example to reset the state of your app, you can perform a full reload:

• Android: Press the R key twice or select "Reload" from the Dev Menu, accessed via Ctrl + M (Windows/Linux) or Cmd ⌘ + M (macOS).
• iOS: Press R in iOS Simulator.

Congratulations! 🎉

You've successfully run and modified your React Native App. 🥳

Now what?

• If you want to add this new React Native code to an existing application, check out the Integration guide.
• If you're curious to learn more about React Native, check out the docs.

Troubleshooting

If you're having issues getting the above steps to work, see the Troubleshooting page.

Learn More

To learn more about React Native, take a look at the following resources:

• React Native Website - learn more about React Native.
• Getting Started - an overview of React Native and how setup your environment.
• Learn the Basics - a guided tour of the React Native basics.
• Blog - read the latest official React Native Blog posts.
• @facebook/react-native - the Open Source; GitHub repository for React Native.