QRCode 🔳

A QRCode generator written in Swift.

Overview

Create a new QRCode representing a URL, a string or arbitrary data. The following examples all result in the same QRCode image.

// URL
let url = URL(string: "http://schuch.me")!
let qrCode = QRCode(url)
qrCode?.image

// String
let qrCode = QRCode("http://schuch.me")
qrCode?.image

// NSData
let data = "http://schuch.me".data(using: .isoLatin1)!
let qrCode = QRCode(data)
qrCode.image

Customize the output image

Make sure to declare your QRCode instance as a variable in order make use of the following features.

Adjust Output Size

Change the output size of the QRCode output image via the size property.

qrCode.size = CGSize(width: 300, height: 300)
qrCode.image // UIImage (300x300)

Color

Modify the colors of the QRCode output image via color and backgroundColor properties.

qrCode.color = CIColor(rgba: "16a085")
qrCode.backgroundColor = CIColor(rgba: "000")
qrCode.image // UIImage (green QRCode color and black background)

Note: The above examples make use of the CIColor extension that ships with this project to create colors based on HEX strings.

UIImageView extension

For convenience, a UIImageView extension is provided to directly initialize an image view with an instance of QRCode.

let imageView = UIImageView(qrCode: qrCode)

Emoji alias

In case you love emoji as much as I do, make sure to create your QRCode instance using the 🔳 typealias.

let qrCode = 🔳("http://example.com")

Version Compatibility

Current Swift compatibility breakdown:

Installation

Manually

Just drag and drop the three .swift files in the QRCode folder into your project.

Tests

Open the Xcode project and press ⌘-U to run the tests.

Alternatively, all tests can be run from the terminal using xctool.

xctool -scheme QRCodeTests -sdk iphonesimulator test

Todo

• Snapshot Tests
• Support transparent backgrounds

Contributing

• Create something awesome, make the code better, add some functionality, whatever (this is the hardest part).
• Fork it
• Create new branch to make your changes
• Commit all your changes to your branch
• Submit a pull request

Contact

Feel free to get in touch.

• Website: http://schuch.me
• Twitter: @schuchalexander