Book Image

React Native - Building Mobile Apps with JavaScript

By : Vladimir Novick
Book Image

React Native - Building Mobile Apps with JavaScript

By: Vladimir Novick

Overview of this book

<p>The emergence of React Native has made creating mobile apps in JavaScript easier for developers. This book introduces you to the React Native framework and the mobile apps development process. It starts with how React Native fits into the world of hybrid apps, and why it’s a popular framework. You’ll learn how React Native works under the hood--compiling JavaScript to Native code to bridge JavaScript and native apps. Also, you’ll learn how to write React Native components and use the ReactJS way of structuring your app. Understand how to use the industry standard Redux architecture as well as MobX--a newly emerging approach for state management--making your apps more robust and scalable.</p> <p>The mobile native world can be intimidating, with lots of platform-specific APIs. In this book, you’ll learn about the most important APIs with help of the real-world examples. You’ll also learn about the community packages that can help speed up your development. The book explains how to use these packages with JavaScript code, include native modules in your application, and write the modules yourself. Throughout the book, you will see examples of WhatsApp, Instagram, and YouTube apps and learn how to recreate them. You’ll also learn debugging and testing techniques, authentication, dealing with real data, and much more.</p> <p>At the end we will walk through design to production process of Twitter app clone and will explain application release process to App Store and Play Store</p>
Table of Contents (13 chapters)

Embedding web content

Sometimes, you want to embed the existing web page inside your application. In mobile development, it's usually done using WebView. React Native is not different, and it gives you component that will render into native WebView.

The WebView component has a variety of props that allow you to manipulate the web page rendered inside. It has various callbacks that provide an option to register to specific events, such as errors, responding to messages from WebView, and so on. For example, adding WebView to our application will look like this:

It will be as simple as adding the WebView component and passing its source prop; in the same fashion, we pass the source prop to the Image component when dealing with network images. In this example, we also pass the scalesPageToFit prop to scale the page to fit WebView dimensions:

<View style={styles.container...