ios - 如何生成包含详细信息的二维码

Question

我没有使用 QRCode 生成器和扫描仪的经验，但我尝试从下面显示的字符串生成 QRCode。我想用一些值来生成它，比如位置地址、姓名、手机号码、邮件、网站、任何文件。谁能帮我做这件事。

@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)
}

Answer 1

尝试将Dictionary中的详细信息转换为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")