func qrCodeMake(text: String) -> UIImage? {
    guard let filter = CIFilter(name: "CIQRCodeGenerator") else { return nil }
	let stringData = text.data(using: String.Encoding.utf8)
    
  	filter.setValue(stringData, forkey: "inputMessage")
	filter.setValue("H", forKey: "inputCorrectionLevel")
        
    if let outout = filter.outputImage {
        return UIImage(ciImage: outout, scale: 1.0, orientation: UIImageOrientation.down)
    } else {
        return nil
    }
}