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

A view for prior months' expenses

Our view for the previous months' expenses should be one that renders a list of the existing months in our budget. It should give us the month, the budget allocated for the month, and have the years separated by some sort of a header. Then, on tap, it should go to the summary for each month to show us our previous months' expenses that were input.

We should create some functions in a new utilities file, named mockDataMethods, to help us mock the data for the previous months and populate our app:

// Expenses/app/utils/mockDataMethods.js 

import { setAsyncStorage } from './storageMethods'; 

const years = ['2017', '2016', '2015']; 
const months = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12']; 

const expenses = [ 
  { amount: '4', category: 'coffee', description: 'Latte' }, 
  { amount: '1.50', category: 'books', description: 'Sunday Paper' }, 
  { amount: '35', category: 'car', description: 'Gas' }, 
  { amount: '60', category: 'restaurant...