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

Adding the Photo Picker component with Amplify Storage with Expo and React Native

In this section, we will add the Photo Picker component to our Expo and React Native apps to let the user upload photos to Amplify Storage (an S3 Bucket). The steps will be similar between Expo and React Native, but the component will be slightly different.

To let the user upload their image to Amplify Storage, we need to add the image picker library to the project:

  1. For the Expo app, install the specific image picker library that is developed by Expo called expo-image-picker by running the following command:
    expo install expo-image-picker
  2. For the React Native app, install the community-made image called react-native-image-picker by running the following two commands:
    yarn add react-native-image-picker
    npx pod-install
  3. Once you have installed the image picker for your React Native project, recompile the project with the yarn ios and yarn android commands to see if it works.
  4. If you try...