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

Signing out with TabBarIOS

Our final step involves adding a sign out page for the user. Using the TabBarIOS component and the react-native-vector-icons, we will create a tabbed view that allows the user to sign out.

Let's make some modifications for this to happen. We need to first modify App.js so that it does the following functions:

  • Imports the TabBarIOS and react-native-vector-icons dependencies
  • Returns a TabBarIOS component in its _renderView method if the activity indicator is not spinning
  • Add a selectedTab string in the App component's state to track which tab is currently chosen, defaulting to the FeedList component
  • Has separate functions to render the FeedList and LoginPage components without navigation
  • Passes the LoginPage a callback that executes the _checkLoginStatus method
  • Modifies its container style to no longer justify nor align any items to the center

Then, modify the LoginPage component so that its onLogoutFinished callback will execute _checkLoginStatus. Import new dependencies...