React Native is an open-source mobile application framework developed by Facebook, Inc. It is used to develop applications for Android, Android TV, iOS, macOS, tvOS, Web, Windows and UWP.
React Native allows developers to use React along with native platform capabilities, which enables developers to build mobile apps using JavaScript and React. It combines the best parts of native development with React, a best-in-class JavaScript library for building user interfaces.
Here’s a simple process on how to use React Native:
1. Installation: Start by installing the Node.js and npm (Node Package Manager) on your system. Then, install the ‘create-react-native-app’ module using npm.
1. Create a new application: With the help of ‘create-react-native-app’, you can create a new React Native application. Simply provide it with the name of the application, and a new folder will be created for you.
1. Start the server: Traverse inside the project’s directory and run the following command to start the server:
```
npm start
```
1. Install the Expo client application on your mobile device, which can be done through Google Play Store or App Store.
1. Run your project: After starting the server, a QR code will be available in the terminal. Scan this QR code from the Expo client’s app to run the project on your mobile device.
Remember, it’s also essential for a developer to gain proficient knowledge in JavaScript, React, and good understanding of native UI elements and APIs in order to use React Native effectively. You also need a code editor such as Visual Studio Code, Atom or Sublime Text. Depending on the platform you want to build your application for (such as Android or iOS), you might need to install and configure Xcode for iOS applications or Android Studio for Android apps.