Book Image

React Native Cookbook. - Second Edition

By : Daniel Ward
4 (1)
Book Image

React Native Cookbook. - Second Edition

4 (1)
By: Daniel Ward

Overview of this book

If you are a developer looking to create mobile applications with maximized code reusability and minimized cost, React Native is what you need. With this practical guide, you’ll be able to build attractive UIs, tackle common problems in mobile development, and achieve improved performance in mobile environments. This book starts by covering the common techniques for React Native customization and helps you set up your development platforms. Over the course of the book, you’ll work through a wide variety of recipes that help you create, style, and animate your apps with built-in React Native and custom third-party components. You’ll also develop real-world browser-based authentication, build a fully functional audio player, and integrate Google Maps in your apps. This book will help you explore different strategies for working with data, including leveraging the popular Redux library and optimizing your app’s dataflow. You’ll also learn how to write native device functionality for new and existing React Native projects and how app deployment works. By the end of this book, you'll be equipped with tips and tricks to write efficient code and have the skills to build full iOS and Android applications using React Native.
Table of Contents (17 chapters)

Initializing your first app

This is all the setup you need in order to get started developing your first React Native app using Expo! There are however a few extra steps you'll need to perform for working with pure React Native apps (non-Expo apps). Pure React Native app development will be covered in depth in Chapter 10, App Workflow and Third-Party Plugins. Since this setup process is a little more involved and subject to change, I recommend referring to the official guide. You can find these instructions in the React Native | Getting Started guide located at
https://facebook.github.io/react-native/docs/getting-started.html under the Building Projects with Native Code tab. From here on out, we can use the magic provided by Expo to easily create new apps for development.

We'll create our first app using Expo via the Expo CLI. Making a new application is as simple as running the following:

expo init project-name

Running this command will first prompt you which type of app you'd like to create: either a blank app, which has no functionality added, or a tabs app, which will create a new app with minimal tab navigation. For the recipes in this book, we'll be using the blank app option.

Once you've selected your preferred application type, a new, empty Expo-powered React Native app in a new project-name directory is created, along with all of the dependencies needed to start developing right away. All you need to do is begin editing the App.js file in the new project directory to get to work.

To run our new app, we can cd into the directory, then use the expo start command. This will automatically build and serve the app, and open a new browser window with the Expo Developer Tools for your in-development React Native app.

For a list of all of the available commands for the Expo CLI, check out the documentation at https://docs.expo.io/versions/latest/guides/expo-cli.html.

With our first application created, let's move on to running the application in an iOS simulator and/or Android emulator.