Book Image

React Native By Example

By : Richard Kho
Book Image

React Native By Example

By: Richard Kho

Overview of this book

React Native's ability to build performant mobile applications with JavaScript has resulted in its popularity amongst developers. Developers now have the luxury to create incredible mobile experiences that look and feel native to their platforms with the comfort of a well-known language and the popular React.js library. This book will show you how to build your own native mobile applications for the iOS and Android platforms while leveraging the finesse and simplicity of JavaScript and React. Throughout the book you will build three projects, each of increasing complexity. You will also link up with the third-party Facebook SDK, convert an app to support the Redux architecture, and learn the process involved in making your apps available for sale on the iOS App Store and Google Play. At the end of this book, you will have learned and implemented a wide breadth of core APIs and components found in the React Native framework that are necessary in creating great mobile experiences.
Table of Contents (17 chapters)
Title Page
Credits
Foreword
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Rendering images


To show an image with React Native, we use the Image component. It lets us display images from both local and remote sources. Styles can also be added to an image, the same way you would stylize any other React component.

We will use the following props for our Image components in this chapter:

  • resizeMode: We will use one of the following strings:
    • cover: This scales the image uniformly and maintains its aspect ratio so that both the width and height of the image will be equal to or larger than the view that encapsulates the Image component.
    • contain: This string also scales the image uniformly and maintains its aspect ratio so that both the width and height of the image will be equal to or less than the view that encapsulates the Image component.
    • stretch: This scales the width and height independently and can change the aspect ratio of the source image.
    • repeat: This repeats the image to cover the entire frame of the encapsulating view. This option also keeps the original size...