Book Image

React Native Cookbook - Second Edition

By : Daniel Ward
4 (1)
Book Image

React Native Cookbook - Second Edition

4 (1)
By: Daniel Ward

Overview of this book

If you are a developer looking to create mobile applications with maximized code reusability and minimized cost, React Native is what you need. With this practical guide, you’ll be able to build attractive UIs, tackle common problems in mobile development, and achieve improved performance in mobile environments. This book starts by covering the common techniques for React Native customization and helps you set up your development platforms. Over the course of the book, you’ll work through a wide variety of recipes that help you create, style, and animate your apps with built-in React Native and custom third-party components. You’ll also develop real-world browser-based authentication, build a fully functional audio player, and integrate Google Maps in your apps. This book will help you explore different strategies for working with data, including leveraging the popular Redux library and optimizing your app’s dataflow. You’ll also learn how to write native device functionality for new and existing React Native projects and how app deployment works. By the end of this book, you'll be equipped with tips and tricks to write efficient code and have the skills to build full iOS and Android applications using React Native.
Table of Contents (17 chapters)

Exposing custom iOS modules

As you begin developing more interesting and complex React Native applications, you could possibly reach a point where executing certain code would be only possible (or significantly improved) in the native layer. This allows for executing data processing that's faster in the native layer when compared with JavaScript, and for accessing certain native functionality that isn't otherwise exposed, such as file I/O, or leveraging existing native code from other applications or libraries in your React Native app.

This recipe will walk you through the process of executing some native Objective-C or Swift code and communicating with the JavaScript layer. We'll build a native HelloManager module that will greet our user with a message. We'll also show how to execute native Objective-C and Swift code, taking in arguments, and showing several...