Book Image

React and React Native

By : Adam Boduch
Book Image

React and React Native

By: Adam Boduch

Overview of this book

para 1: Dive into the world of React and create powerful applications with responsive and streamlined UIs! With React best practices for both Android and iOS, this book demonstrates React and React Native in action, helping you to create intuitive and engaging applications. Para 2: React and React Native allow you to build desktop, mobile and native applications for all major platforms. Combined with Flux and Relay, you?ll be able to create powerful and feature-complete applications from just one code base. Para 3: Discover how to build desktop and mobile applications using Facebook?s innovative UI libraries. You?ll also learn how to craft composable UIs using React, and then apply these concepts to building Native UIs using React Native. Finally, find out how you can create React applications which run on all major platforms, and leverage Relay for feature-complete and data-driven applications. Para 4: What?s Inside ? Craft composable UIs using React & build Native UIs using React Native ? Create React applications for major platforms ? Access APIs ? Leverage Relay for data-driven web & native mobile applications
Table of Contents (34 chapters)
React and React Native
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface

Storing application data


Now, let's shift our attention to storing data within a React Native application. The AsyncStorage API works the same on both iOS and Android platforms. You would use this API for applications that don't require any network connectivity in the first place, or to store data that's eventually synchronized using an API endpoint once a network becomes available.

Let's look at some code that allows the user to enter a key and a value, and then stores them:

import React, { Component } from 'react'; 
import { 
  AppRegistry, 
  Text, 
  TextInput, 
  View, 
  ListView, 
  AsyncStorage, 
} from 'react-native'; 
import { fromJS } from 'immutable'; 
 
import styles from './styles'; 
import Button from './Button'; 
 
class StoringData extends Component { 
 
  // The initial state of this component 
  // consists of the current "key" and "value" 
  // that the user is entering. It also has...