For a recent freelancing project I was asked to provide QR Code scanning functionality embedded in a stand-alone mobile iOS app. I was aware of QR Code scanning packages available on the node package manager but never really needed to use them in my work!
Some searching on blogs and packages’ documentation showed you how to read a QR Code and display the information, but not actually DO anything with that information. This was relatively frustrating given that the point of a QR code is to transfer information and usually in the form of a link to a browser.
In this tutorial, I will take you through show you the steps I took to create an embedded QR Code Scanner for my React Native iOS app. By the end of this tutorial, you will have a good understanding of the parts of React that are relevant to React Native, including state, the lifecycle of a component.
What you will learn
- The difference between React class components and function components
- How to create a React class component
- How to update the state in a React class component
- How to use conditional rendering to toggle between camera and browser in our code.
- About the different React Native built-in core components
#coding #javascript #react-native #programming #react