1、搭个界面
2、写代码
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//
// 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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