Book Image

React and React Native - Third Edition

By : Adam Boduch, Roy Derks
Book Image

React and React Native - Third Edition

By: Adam Boduch, Roy Derks

Overview of this book

React and React Native, Facebook’s innovative User Interface (UI) libraries, are designed to help you build robust cross-platform web and mobile applications. This updated third edition is improved and updated to cover the latest version of React. The book particularly focuses on the latest developments in the React ecosystem, such as modern Hook implementations, code splitting using lazy components and Suspense, user interface framework components using Material-UI, and Apollo. In terms of React Native, the book has been updated to version 0.62 and demonstrates how to apply native UI components for your existing mobile apps using NativeBase. You will begin by learning about the essential building blocks of React components. Next, you’ll progress to working with higher-level functionalities in application development, before putting this knowledge to use by developing user interface components for the web and for native platforms. In the concluding chapters, you’ll learn how to bring your application together with a robust data architecture. By the end of this book, you’ll be able to build React applications for the web and React Native applications for multiple mobile platforms.
Table of Contents (33 chapters)
Section 1: React
Section 2: React Native
Section 3: React Architecture

Measuring progress

The downside of indicating that progress is being made is that there's no end in sight for the user. This leads to a feeling of unease, like when you're waiting for food in a microwave with no timer. When you know how much progress has been made, and how much is left to go, you feel better. This is why it's always better to use a deterministic progress bar whenever possible.

Unlike the ActivityIndicator component, there's no platform-agnostic component in React Native for progress bars. So, we'll have to make one ourselves. We'll create a component that uses ProgressViewIOS on iOS and ProgressBarAndroid on Android:

  1. Let's handle the cross-platform issues first. React Native knows to import the correct module based on its file extension. Here's what the ProgressBarComponent.ios.js module looks like:
export { ProgressViewIOS as ProgressBarComponent } from "react-native";
export const progressProps = {};

You're directly...