What Is React Native?

React Native is a JavaScript framework for writing real, natively rendering mobile applications for iOS and Android. It’s based on React, Facebook’s JavaScript library for building user interfaces, but instead of targeting the browser, it targets mobile platforms. In other words: web developers can now write mobile applications that look and feel truly “native,” all from the comfort of a JavaScript library that we already know and love. Plus, because most of the code you write can be shared between platforms, React Native makes it easy to simultaneously develop for both Android and iOS.

Similar to React for the Web, React Native applications are written using a mixture of JavaScript and XML-esque markup, known as JSX. Then, under the hood, the React Native “bridge” invokes the native rendering APIs in Objective-C (for iOS) or Java (for Android). Thus, your application will render using real mobile UI components, not webviews, and will look and feel like any other mobile application. React Native also exposes JavaScript interfaces for platform APIs, so your React Native apps can access platform features like the phone camera, or the user’s location.

React Native currently supports both iOS and Android, and has the potential to expand to future platforms as well. In this book, we’ll cover both iOS and Android. The vast majority of the code we write will be cross-platform. And yes: you can really use React Native to build production-ready mobile applications! Some anecdota: Facebook, Palantir, and TaskRabbit are already using it in production for user-facing applications.

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Why Use React Native for Your Mobile App Devlopment?

React Native the same code is used for deployment both on iOS and Android platforms. It means that it’s possible to get an app for two platforms at once — iOS and Android. React Native shortens the development cycle, makes it possible to deliver products in the fastest way. Development of apps is adapted to the hybrid environment and has native results. The framework uses famous ReactJS UI library developed by Facebook for user interfaces and apps creating and implements ReactJS under the hood. It transfers virtual DOM, improved app performance, and more simple programming processes from ReactJS. A built mobile app is smoother and is loaded much faster than a classic hybrid one. As JavaScript interacts asynchronously with the native environment, UI feels fluid and is highly responsive. A single code base is deployed to multiple mobile operating systems. Components are reused anytime at any level into existing code without you rewriting it and recompiling the app.

React Native CLI Vs Expo what to use?

React Native CLI vs Expo :New React Native Apps. If you’ve decided that React Native is right for your project, this article is for you! We will be cover your options for bootstrapping your app, and the pros and cons for each option. There are two methods for initializing and developing your app: Expo, and the React Native CLI. Until recently there was a distinct third method, using Create React Native App (CRNA). CRNA has since been merged with the Expo project, and only continues to exist as a separate entity to provide backwards compatibility. Expo falls into the first category of tools, providing a more robust and developer friendly development workflow at the cost of some flexibility. Apps bootstrapped with Expo also have access to a slew of useful features provided by the Expo SDK, like BarcodeScanner , MapView , ImagePicker , and so many more. Initializing an app with the React Native CLI, via the react-native init command provides flexibility ...

How to use Axios In React-native

Axios Is used For Api Calling in React-native ... Step 1. npm install axios; After installing package. import axios from "axios"; const options = { method:method // post or get headers:{'content-type':'application/json'}, data:data, url:"Apiurl", }; axios(options).then(res => { //Do something } Note If u Want to Send Form-data then change Content-type to multiformdata and pass formdata in data field in Options

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