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

Implementing TabBarIOS

TabBarIOS renders a tabbed navigation bar at the bottom of the screen. The bar can contain multiple icons, each responsible for a different view.

The different tabs that TabBarIOS renders are considered items of the tab bar. They are declared as TabBarIOS.Item components and are nested as children within TabBarIOS.

However, with the react-native-vector-icons library we imported, we would like to use Font Awesome icons for our navigation. Instead of rendering the TabBarIOS.Item components as children for our TabBarIOS component, we will substitute them for Icon.TabBarItemIOS.

Icon.TabBarItemIOS is a component that behaves in the exact same way that TabBarIOS.Item does, but with a couple of extra props that are specific to it. We will be using the following props for our implementation:

  • onPress: This is a callback that fires when the tab is tapped on by the user. This should always at least set the selected component to a Boolean in your state.
  • selected: This is a Boolean...