IOS Swift 开发QRCore(二维码)实例详解
1、搭个界面
2、写代码
//
// ViewController.swift
// GeneratorQRCode
//
// Created by targetcloud on 2016/12/3.
// Copyright © 2016年 targetcloud. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var qrImg: UIImageView!
@IBOutlet weak var qrContent: UITextView!
@IBAction func generatorQRImg(_ sender: Any) {
view.endEditing(true)
let str = qrContent.text ?? ""
let filter = CIFilter(name: "CIQRCodeGenerator")
filter?.setDefaults()
let data = str.data(using: String.Encoding.utf8)
filter?.setValue(data, forKey: "inputMessage")
filter?.setValue("M", forKey: "inputCorrectionLevel")
var image = filter?.outputImage
let transform = CGAffineTransform(scaleX: 10, y: 10)//处理成为一个高清图片
image = image?.applying(transform)
var resultImage = UIImage(ciImage: image!)
let centerImg = UIImage(named: "targetcloud.png")
resultImage = mergeImage(resultImage, centerImg: centerImg!, drawSize:CGSize(width: 80, height: 80))
qrImg.image = resultImage
}
func mergeImage(_ sourceImage: UIImage, centerImg: UIImage,drawSize:CGSize) -> UIImage {
let size = sourceImage.size
UIGraphicsBeginImageContext(size)
sourceImage.draw(in: CGRect(x: 0, y: 0, width: size.width, height: size.height))
centerImg.draw(in: CGRect(x: (size.width - drawSize.width) * 0.5, y: (size.height - drawSize.height) * 0.5, width: drawSize.width, height: drawSize.height))
let resultImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return resultImage!
}
}
3、运行效果
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