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
About the Author
About the Reviewer
Customer Feedback


Switch is a component that renders a Boolean input and allows the user to toggle back and forth.

With Switch, these are the props that we will use:

  • onValueChange: This is a callback that is invoked with the new value of the switch when the value changes
  • value: This is a Boolean that determines whether the switch is set to its 'on' position or not; it defaults to false

A simple Switch component can look like this:

  onValueChange={ (value) =? this.setState({ toggled: value })} 
  value={ this.state.toggled } 

As stated earlier, Switch has two props that are required: its value and a callback to change its value when toggled.

Using this knowledge, let's make changes to the TasksList component so that it passes the completed, due, formattedDate, and text properties of each row to the EditTask component for use.

Then, make additions to the EditTask component so that it:

  • Expects the completed, due, formattedDate, and text props as part of its propTypes declaration.
  • Contains a...