React Native | Getting Started

by Ralph React, React Native, ReactJS

General Readings

Create App

Expo CLI Quickstart

Assuming that you have Node 12 LTS or greater installed, you can use npm to install the Expo CLI command line utility:

npm install -g expo-cli

Then run the following commands to create a new React Native project called “GettingStarted”:

expo init app-getting-started
cd app-getting-started
npm start # you can also use: expo start

React Native CLI Quickstart

npx react-native init app-getting-started

or create new project based on a template

npx react-native init app-getting-started--template react-native-template-typescript

Start App

Step 1: Start Metro

First, you will need to start Metro (Docs), the JavaScript bundler that ships with React Native. Metro “takes in an entry file and various options, and returns a single JavaScript file that includes all your code and its dependencies.”

npx react-native start

Then, visit the Website or the Metro Page (http://localhost:8081/)

Step 2: Start your application

Let Metro Bundler run in its own terminal. Open a new terminal inside your React Native project folder. Run the following:

# For running app on iOS
npx react-native run-ios

# For running app on Android
npx react-native run-android