React Native Installation On Windows Operating System Using Expo CLI
Getting started with react native mobile app development for the Windows operating system. Here we going to install react native using Expo CLI to start mobile app development.
React Native Setup Environment
Before you begin, make sure your development environment includes
Node.js? and an npm package manager.
React requires a current, active LTS, or maintenance LTS version of
Node.js. See the
engines key for the specific version requirements in our package.json.
To check your version, run
node -v in a terminal/console window.
Node.js, go to nodejs.org and download node.js and install on your operating system.
npm package manager
The React Native CLI, and React apps depend on features and functionality provided by libraries that are available as npm packages. To download and install npm packages, you must have an npm package manager.
This setup guide uses the npm client command line interface, which is installed with
Node.js by default.
To check that you have the npm client installed, run
npm -v in a terminal/console window.
If You want to see how to install node. Click here
Step 1: Install the React Native EXPO-CLI
The Expo CLI to create React Native projects, generate application and library code, and perform a variety of ongoing development tasks such as testing, bundling, and deployment.
Install the Expo CLI globally.
To install the Expo CLI using
npm, open a terminal/console window and enter the following command:
npm install -g expo-cli
Step 2: Create a workspace and initial application
You develop apps in the context of an React workspace.
To create a new workspace and initial starter app:
1) Run the CLI command expo init and provide the name my-app, as shown here:
expo init AwesomeProject
expo init command prompts you for information about features to include in the initial app. Accept the defaults by pressing the Enter or Return key.
The Expo CLI installs the necessary React Native NPM packages and other dependencies. This can take a few minutes.
The CLI creates a new workspace and a simple Welcome app, ready to run.
3) Open your created app in any your favorite editor, you will find here file structure like this
In that file structure you have bucket of files like this
- TEMPLATESDEMO, This is your create app name.
- assets,This directory is used to store media files or external css, js files
- node_modules,This will store all your necessary library. Like when you install bootstrap 4 library using npm this will store the bootstrap library to use in our app
- App.js, This is main app component js file where your app will start from. You can create your own components we will see later.
- app.json, This will having configuration of your app. Like app name, where assets store, etc etc
- package-lock.json & package.json file will store all your necessary library information. And start , test app configuration.
Step 3: Run the application
The Expo CLI includes a server, so that you can easily build and serve your app locally and also you can share your app vai email and open to emulator.
Go to the workspace folder (
Launch the server by using the CLI command
cd my-app npm start
npm start command launches the server, watches your files, and rebuilds the app as you make changes to those files.
This will compile your app and run your program
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