Building a QR Code Scanner App Using SwiftUI and AVFoundation
So, what’s QR code? I believe most of you know what a QR code is. In case you haven’t heard of it, just take a look at the above image — that’s a QR code.
QR (short for Quick Response) code is a kind of two-dimensional bar code developed by Denso. Originally designed for tracking parts in manufacturing, QR code has gained popularity in consumer space in recent years as a way to encode the URL of a landing page or marketing information. Unlike the basic barcode that you’re familiar with, a QR code contains information in both the horizontal and vertical direction. Thus, this contributes to its capability of storing a larger amount of data in both numeric and letter form. I don’t want to go into the technical details of the QR code here. If you’re interested in learning more, you can check out the official website of QR code.
As an iOS developer, you may wonder how you can empower your app to read a QR code. Earlier, I’ve written a tutorial on building a QR Code reader using UIKit and AVFoundation. With the release of SwiftUI, let’s see how the same QR Code Scanner app can be implemented using this new UI framework.
