Book Image

React Native Blueprints

By : Emilio Rodriguez Martinez
Book Image

React Native Blueprints

By: Emilio Rodriguez Martinez

Overview of this book

Considering the success of the React framework, Facebook recently introduced a new mobile development framework called React Native. With React Native's game-changing approach to hybrid mobile development, you can build native mobile applications that are much more powerful, interactive, and faster by using JavaScript This project-based guide takes you through eight projects to help you gain a sound understanding of the framework and helps you build mobile apps with native user experience. Starting with a simple standalone groceries list app, you will progressively move on to building advanced apps by adding connectivity with external APIs, using native features, such as the camera or microphone, in the mobile device, integrating with state management libraries such as Redux or MobX, or leveraging React Native’s performance by building a full-featured game. This book covers the entire feature set of React Native, starting from the simplest (layout or navigation libraries) to the most advanced (integration with native code) features. By the end of this book, you’ll be able to build professional Android and iOS applications using React Native.
Table of Contents (15 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Writing the native module


We need XCode to write the native module, which will use the microphone to record samples and to analyze those samples to calculate the main frequency. As we are not interested in how these calculations are made, we will use an open source library to delegate most of the recording and FFT calculations. The library is named SCListener and a fork of it can be found at https://github.com/emilioicai/sc_listener.

We need to download the library and add its files to the project following these steps:

  1. Navigate to the folder where our iOS project is: <project_folder>/ios/.
  2. Double-click on guitarTuner.xcodeproj, which should open XCode.

 

  1. Right-click on the guitarTuner folder and click on Add Files to "guitarTuner"...
  1. Select all the files from the downloaded SCListener library:
  1. Click on Accept. You should end up with a file structure in XCode similar to this one:
  1. SCListener needs the AudioToolbox framework to be installed. Let's do this by clicking on the root of the project...