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

Start the Metro server

First, you will need to start Metro, the JavaScript bundler that ships with React Native.

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

# using npm
npm start

and press i to run the app in the iOS simulator or a to run the app in the Android emulator.

If everything is set up correctly, you should see your new app running in your iOS Simulator shortly provided you have set up your emulator/simulator correctly.

This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.