修改 生成二维码图片的方法

galaxy/galaxy/Classes/Tools/Extention/String+Extension.swift

@@ -260,22 +260,39 @@ extension String {
     
     ///字符串 生成二维码
     func generateQRCode() -> UIImage? {
-        guard let data = self.data(using: .ascii, allowLossyConversion: false) else {
-            return nil
-        }
+//        guard let data = self.data(using: .ascii, allowLossyConversion: false) else {
+//            return nil
+//        }
+//
+//        let filter = CIFilter(name: "CIQRCodeGenerator")
+//        filter?.setValue(data, forKey: "inputMessage")
+//
+//        guard let outputImage = filter?.outputImage else {
+//            return nil
+//        }
+//
+//        let context = CIContext()
+//        if let cgImage = context.createCGImage(outputImage, from: outputImage.extent) {
+//            return UIImage(cgImage: cgImage)
+//        }
+//
+//        return nil
         
+        
+        let data = self.data(using: String.Encoding.ascii)
         let filter = CIFilter(name: "CIQRCodeGenerator")
         filter?.setValue(data, forKey: "inputMessage")
+        filter?.setValue("H", forKey: "inputCorrectionLevel") // 设置二维码的容错率
         
-        guard let outputImage = filter?.outputImage else {
-            return nil
-        }
+        // 获取生成的二维码CIImage
+        guard let outputImage = filter?.outputImage else { return nil }
         
-        let context = CIContext()
-        if let cgImage = context.createCGImage(outputImage, from: outputImage.extent) {
-            return UIImage(cgImage: cgImage)
-        }
+        // 将CIImage转换为UIImage
+        let scaleX = 5.0
+        let scaleY = 5.0
+        let transformedImage = outputImage.transformed(by: CGAffineTransform(scaleX: scaleX, y: scaleY))
+        let qrCodeImage = UIImage(ciImage: transformedImage)
         
-        return nil
+        return qrCodeImage
     }
 }