Book Image

Rapid Application Development with AWS Amplify

By : Adrian Leung
Book Image

Rapid Application Development with AWS Amplify

By: Adrian Leung

Overview of this book

AWS Amplify is a modern toolkit that includes a command line interface (CLI); libraries for JS, iOS, and Android programming; UI component libraries for frameworks like React, Angular, and Vue.js for web development, and React Native and Flutter for mobile development. You'll begin by learning how to build AWS Amplify solutions with React and React Native with TypeScript from scratch, along with integrating it with existing solutions. This book will show you the fastest way to build a production-ready minimum viable product (MVP) within days instead of years. You'll also discover how to increase development speed without compromising on quality by adopting behavior-driven development (BDD) and Cypress for end-to-end test automation, as well as the Amplify build pipeline (DevOps or CI/CD pipeline) to ensure optimal quality throughout continuous test automation and continuous delivery. As you advance, you'll work with React to determine how to build progressive web apps (PWAs) with Amplify and React Native for cross-platform mobile apps. In addition to this, you'll find out how to set up a custom domain name for your new website and set up the AWS Amplify Admin UI for managing the content of your app effectively. By the end of this AWS book, you'll be able to build a full-stack AWS Amplify solution all by yourself.
Table of Contents (14 chapters)
Section 1: Getting Ready
Section 2: Building a Photo Sharing App
Section 3: Production Readiness

Applying styling such as typography and colors to Expo and React Native apps

Theming on React Native and Expo is slightly different from ReactJS because there is only one way to do it, which is by creating a style file that contains all the styles instead of a CSS file. Let's create a file called AmplifyUIStyles.ts in the app directory and do the following:

  1. Import StyleSheet from the react-native module:
    import { StyleSheet } from 'react-native';
  2. Export the AmplifyThemeType type and the colors. You can change the colors to whatever you want with a hex color, or you can just use the name of a color, as here with 'blue':
    export type AmplifyThemeType = Record<string, any>;
    // Colors
    export const deepSquidInk = '#152939';
    export const linkUnderlayColor = '#FFF';
    export const errorIconColor = '#DD3F5B';
    export const textInputColor = '#000000';
    export const textInputBorderColor = '#C4C4C4';