RoundCode for iOS

RoundCode is custom circular QR code with lots of customization. Similar to Facebook messenger and Apple’s App Clip Codes the RoundCode includes convenient camera scanner and decoder.

Installation

Cocoapods:

pod 'RoundCode'

Swift Package Manager:

File > Swift Packages > Add Package Dependency

https://github.com/aslanyanhaik/RoundCode

Usage example

import framework

import RoundCode

Encoding

create coder and encode

let image = RCImage(message: "Hello World")
let coder = RCCoder()
do {
  imageView.image = try coder.encode(image)
} catch {
  //handle errors
}

You can also validate the messsage before encoding

let coder = RCCoder()
let isValidText = coder.validate("Hello world")

Decoding

Create instane of RCCameraViewController and handle the delegate

class ViewController: UIViewController, RCCameraViewControllerDelegate {
  
  func scan() {
    let cameraController = RCCameraViewController()
    cameraController.delegate = self
    present(cameraController, animated: true)
  }
  
  func cameraViewController(didFinishScanning message: String) {
    messageLabel.text = message
  }
}

You can also decode a UIImage like this

let coder = RCCoder()
do {
  messageLabel.text = try coder.decode(UIImage(named: code)!)
} catch {
  //handle errors
}

Appearance

You can change the appearance like this

var image = RCImage(message: "Hello world")
image.contentInsets = UIEdgeInsets(top: 8, left: 10, bottom: 4, right: 10)
image.attachmentImage = UIImage(named: "Profile")
image.size = 300
image.gradientType = .linear(angle: CGFloat.pi)
image.tintColors = [.red, .black]

If image is on dark background you should change scanning mode to darkBackground

let coder = RCCoder()
coder.scanningMode = .darkBackground

Advanced coding configuration

You can provide custom coding configuration in order to encode long text by reducing number of characters

let configuration = RCCoderConfiguration.shortConfiguration
let coder = RCCoder(configuration: configuration)

let configuration = RCCoderConfiguration(characters: " -abcdefghijklmnopqrstuvwxyz0123456789")
let coder = RCCoder(configuration: configuration)

⚠️ If you are encoding with custom configuration, then you should change the RCCameraViewController configuration ⚠️

let configuration = RCCoderConfiguration(characters: " -abcdefghijklmnopqrstuvwxyz0123456789")
let coder = RCCoder(configuration: configuration)
let camera = RCCameraViewController()
camera.coder = coder

Compatibility

Written in Swift 5 and requires Xcode 11.0

RoundCode is compatible with iOS 13.0+.

Author

Haik Aslanyan

License

Licensed under MIT License: https://opensource.org/licenses/MIT