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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原文链接：http://blog.csdn.net/callzjy/article/details/53451699
