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React Native November 15, 2023

React Native: How to Run App with Expo Start

Writen by qasimqadir89

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Yes, you can run a React Native application using Expo CLI by running the command expo start. Expo is a set of tools and services built around React Native that makes it easier to develop, build, and deploy React Native applications.

Here are the general steps to run a React Native application with Expo:


  1. Node.js and npm:
    • Make sure you have Node.js and npm installed on your machine.
  2. Expo CLI:
    • Install Expo CLI globally using the following command:bashCopy codenpm install -g expo-cli

Steps to Run React Native Application with Expo:

  1. Navigate to Your React Native Project:
    • Open your terminal or command prompt and navigate to the root directory of your React Native project.
  2. Run Expo Development Server:
    • Run the following command to start the Expo development server:bashCopy codeexpo start
    • This command will start the development server and open the Expo Developer Tools in your default web browser.
  3. Choose How to Run Your App:
    • You can choose to run the app on an emulator/simulator, on your physical device using the Expo Go app, or on a web browser (if supported).
      • For emulator/simulator:
        • Press i to open in the iOS simulator (macOS only).
        • Press a to open in the Android emulator.
      • For Expo Go app:
        • Install the Expo Go app on your iOS or Android device.
        • Scan the QR code from the Expo Developer Tools using the Expo Go app.
      • For web:
        • Press w to open in a web browser.
  4. Start Developing:
    • Once the app is running, you can start developing your React Native application. Any changes you make to the code will be automatically reflected, and you can see the results in real-time.

Expo provides additional features and tools that can simplify the development process, such as easy access to native APIs, a wide range of pre-built components, and simplified app distribution. It’s a great choice for quickly prototyping and developing React Native applications.

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