Book Image

Mastering React Native

Book Image

Mastering React Native

Overview of this book

React Native has completely revolutionized mobile development by empowering JavaScript developers to build world-class mobile apps that run natively on mobile platforms. This book will show you how to apply JavaScript and other front-end skills to build cross-platform React Native applications for iOS and Android using a single codebase. This book will provide you with all the React Native building blocks necessary to become an expert. We’ll give you a brief explanation of the numerous native components and APIs that come bundled with React Native including Images, Views, ListViews, WebViews, and much more. You will learn to utilize form inputs in React Native. You’ll get an overview of Facebook’s Flux data architecture and then apply Redux to manage data with a remote API. You will also learn to animate different parts of your application, as well as routing using React Native’s navigation APIs. By the end of the book, you will be able to build cutting-edge applications using the React Native framework.
Table of Contents (20 chapters)
Mastering React Native
Credits
Disclaimer
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Adding media query behavior to React Native


In the current web world, we are accustomed to building sites that adjust their presentation to best fit the screen space available. Most often, that's done by detecting the width or height of the viewport and adjusting CSS rules accordingly. Doing this type of screen detection has actually been possible for a long time through JavaScript. But the grand idea of responsive design didn't become popular until browsers added support for media queries through @media in CSS. Currently, React Native styles don't have an equivalent of @media. However, there are a few useful hooks built into React Native for determining the width and height of the device or individual components that can help us achieve similar, if not cooler results.

Using Dimensions

React Native has its own version of window.innerHeight and window.innerWidth that provides static values for width, height, and scale. These properties are made available through the Dimensions object inside...