我没有使用QRCode生成器和扫描仪的经验,但是我尝试从下面显示的字符串生成QRCode。我想使用诸如地点地址,姓名,手机号码,邮件,网站,任何文档之类的值来生成它。谁能帮助我做到这一点。
@IBAction func generate(_ sender: Any) {
if let mystring = mytextfield.text {
let data = mystring.data(using: .ascii, allowLossyConversion: false)
let filter = CIFilter(name: "CIQRCodeGenerator")
filter?.setValue(data, forKey: "InputMessage")
let ciImage = filter?.outputImage
let transform = CGAffineTransform(scaleX: 10, y: 10)
let transformimage = ciImage?.transformed(by: transform)
let image = UIImage(ciImage: transformimage!)
img.image=image
saveimg.isEnabled=true
}
}
@IBAction func saveimage(_ sender: Any) {
screenshotmethod()
}
func screenshotmethod(){
let layer = UIApplication.shared.keyWindow!.layer
let scale = UIScreen.main.scale
UIGraphicsBeginImageContextWithOptions(layer.frame.size, false, scale)
layer.render(in: UIGraphicsGetCurrentContext()!)
let screenshot = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
UIImageWriteToSavedPhotosAlbum(screenshot!, nil, nil, nil)
}
答案 0 :(得分:1)
尝试将详细信息从Dictionary
转换为JSON
数据,然后将其设置为CIFilter
。
var jsonDict = [String: Any]()
jsonDict.updateValue("Your_Name", forKey: "name")
jsonDict.updateValue("1234567890", forKey: "number")
guard let jsonData = try? JSONSerialization.data(withJSONObject: jsonDict, options: [.prettyPrinted]) else {
return
}
let filter = CIFilter(name: "CIQRCodeGenerator")
filter?.setValue(jsonData, forKey: "InputMessage")
答案 1 :(得分:0)
通过将任何字符串发送到以下函数,您可以轻松生成 QRCode :
private func generateQRCode(from data: Data) -> UIImage? {
if let filter = CIFilter(name: "CIQRCodeGenerator") {
filter.setValue(data, forKey: "inputMessage")
let transform = CGAffineTransform(scaleX: 10, y: 10)
if let output = filter.outputImage?.transformed(by: transform) {
return UIImage(ciImage: output)
}
}
return nil
}
答案 2 :(得分:0)
我用这种方式
private func generateQRCode(){
var jsonDict = [String: Any]()
jsonDict.updateValue("Your_Name", forKey: "name")
jsonDict.updateValue("1234567890", forKey: "number")
guard let jsonData = try? JSONSerialization.data(withJSONObject: jsonDict, options: [.prettyPrinted]) else {
return
}
let filter = CIFilter(name: "CIQRCodeGenerator")
filter?.setValue(jsonData, forKey: "InputMessage")
let qrTransform = CGAffineTransform(scaleX: 12, y: 12)
let qrImage = filter?.outputImage?.transformed(by: qrTransform)
img_ticket_qr.image = UIImage(ciImage: qrImage!)
}