EyreFree/EFQRCode

EFQRCode is a lightweight, pure-Swift library for generating pretty QRCode image with input watermark or icon and recognizing QRCode from image, it is based on CoreImage. This project is inspired by qrcode. It provides you a better way to operate QRCode in your app.

中文介绍

Overview

Demo

To run the example project, clone the repo, demos are in the 'Examples' folder.

Or you can run the following command in terminal:

git clone git@github.com:EyreFree/EFQRCode.git; cd EFQRCode/Examples/iOS; open 'iOS Example.xcodeproj'

Requirements

• XCode 8.0+
• Swift 3.0+
• iOS 8.0+ / macOS 10.11+ / tvOS 9.0+

Installation

CocoaPods

EFQRCode is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "EFQRCode", '~> 1.2.4'

Then, run the following command:

$ pod install

Carthage

Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

You can install Carthage with Homebrew using the following command:

$ brew update
$ brew install carthage

To integrate EFQRCode into your Xcode project using Carthage, specify it in your Cartfile:

github "EyreFree/EFQRCode" ~> 1.2.4

Run carthage update to build the framework and drag the built EFQRCode.framework into your Xcode project.

Swift Package Manager

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler.

Once you have your Swift package set up, adding EFQRCode as a dependency is as easy as adding it to the dependencies value of your Package.swift.

dependencies: [
    .Package(url: "https://github.com/EyreFree/EFQRCode.git", Version(1, 2, 4))
]

Quick Start

1. Import EFQRCode

Import EFQRCode module where you want to use it:

import EFQRCode

2. Recognition

Get QR Codes from CGImage, maybe there are several codes in a image, so it will return an array:

if let testImage = UIImage(named: "test.png")?.toCGImage() {
    if let tryCodes = EFQRCode.recognize(image: testImage) {
        if tryCodes.count > 0 {
            print("There are \(tryCodes.count) codes in testImage.")
            for (index, code) in tryCodes.enumerated() {
                print("The content of \(index) QR Code is: \(code).")
            }
        } else {
            print("There is no QR Codes in testImage.")
        }
    } else {
        print("Recognize failed, check your input image!")
    }
}

3. Generation

Create QR Code image, quick usage:

// Common parameters:
//                         content: Content of QR Code
// inputCorrectionLevel (Optional): error-tolerant rate
//                                  L 7%
//                                  M 15%
//                                  Q 25%
//                                  H 30%(Default)
//                 size (Optional): Width and height of image
//        magnification (Optional): Magnification of QRCode compare with the minimum size
//                                  (Parameter size will be ignored if magnification is not nil)
//      backgroundColor (Optional): Background color of QRCode
//      foregroundColor (Optional): Foreground color of QRCode
//                 icon (Optional): Icon in the middle of QR Code Image and it's setting
//            watermark (Optional): Watermark background image and it's setting
//                extra (Optional): Extra parameters

if let tryImage = EFQRCode.generate(
    content: "https://github.com/EyreFree/EFQRCode",
    magnification: EFIntSize(width: 9, height: 9),
    watermark: EFWatermark(image: UIImage(named: "WWF")?.toCGImage(), mode: .scaleAspectFill, isColorful: false)
) {
    print("Create QRCode image success: \(tryImage)")
} else {
    print("Create QRCode image failed!")
}

Result:

Learn more from User Guide.

Todo

• Support GIF
• Support more styles

PS

1. Please select a high contrast foreground and background color combinations;
2. You should use magnification instead of size if you want to improve the definition of QRCode image, you can also increase the value of them;
3. Magnification too high／Size too long／Content too much may cause failure;
4. It is recommended to test the QRCode image before put it into use;
5. You can contact me if there is any problem, both Issue and Pull request are welcome.

PS of PS: I wish you can click the Star button if this tool is useful for you, thanks, QAQ...

Other Platforms/Languages

Contact

Email: eyrefree@eyrefree.org
Weibo: @EyreFree
Twitter: @EyreFree777

License

EFQRCode is available under the MIT license. See the LICENSE file for more info.