Swift iOS how to convert bytes to Image - ios

Question

I'm trying to retrieve and visualize an image from postgres to iOS, and I tried turning into Data and then UIImage but with no luck, when i create the UIImage it returns nil.
As you can see from the image below, I get that string from the db, with double backslash and x, that should be normal, I tried both to keep the escaping symbols and to trim them, I also tried to initialize the Data with both initializer with byte: and base64Encoded, with and without options but the image is always nil.
screenshot from xcode
func dataToImage(data:String)->Image{
var imageData = Data(bytes: "68747470733a2f2f73332e65752d63656e7472616c2d312e616d617a6f6e6177732e636f6d2f696c6172696f73616c6174696e6f2f31423236303332462d363935422d344342432d393733412d3342413936343841334535372d373136312d303030303145323833464643303541442e6a706567", count: data.count)
var base64data = Data(base64Encoded: "68747470733a2f2f73332e65752d63656e7472616c2d312e616d617a6f6e6177732e636f6d2f696c6172696f73616c6174696e6f2f31423236303332462d363935422d344342432d393733412d3342413936343841334535372d373136312d303030303145323833464643303541442e6a706567", options: .ignoreUnknownCharacters)
return Image(uiImage: UIImage(data: imageData)!)
}
the string I get from the db:
data String "\\x68747470733a2f2f73332e65752d63656e7472616c2d312e616d617a6f6e6177732e636f6d2f696c6172696f73616c6174696e6f2f31423236303332462d363935422d344342432d393733412d3342413936343841334535372d373136312d303030303145323833464643303541442e6a706567"
Any help appreciated, thanks!

Answer 1

You are not saving image data correctly =/
To get UIImage Data properly you should:
let data = yourImage.jpegData(compressionQuality: 1)
It will return an Data
So, save it like a String and its ready!
To set image from Data its like these:
let data = Data(base64Encoded: myString)
let newImage = UIImage(data: data)
To debug more easily use this string to convert to Data and Image. This string provides us a Data and an Image properly
"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCABAAEADASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+iiopp1gALg4PcUJXAloqut7A/Rqk+0Rf38fUYp2YrklFRfaIi2A2foM0vnR5wXAPoeKLMdySikDK3RgfoaWkAVma0+y1B9606x/EJIskx13VUdxPYp2zl1GVyParjvkx43KWUAnjPU+tZdr9zkVad9ph7jaOD9TWjJMnTNS+26C15qFqLuWCeZNkEIZmKsF+Vc9cGtJdetreFUOm6pFGP8ApxchRn2z61z+kmKOwmD25lA1S8C44x84rpYZBPHH5R8lyf4o2fPt1GKTVwFk1jTBLLE9ysTxOY2M0bRru54DMAG6djWxZ824+p/nWJHeyeV5cqyZxyy4x+RY1s6ec2i5OTk8n60pbDW5arE8SNi1jA/vf4Vt15/8TfFcPhlNOWW0kuftRfAjmEZXbg55Bz1pU4uUrLcJSUVeWxp2eMYLLj2rQKwtGjPjgAZ3ds14sPi3aRNkaHcH63i//E1KPjVAoH/EknGP+nxP/iK39hU7fkZqtTfU9A8P+W+m3LhA6nUrtlB/3x61src7GVvs06KByFjU5/EGvMvD3jS4/sTTYbTSDc3F891c4a8SMIPO28krz0qw3izWJHQroSfOQqn+04iOTjqU4qOR/wBNF8y/pM9GW4jIKrbThevEWB/OtrSz/omB2YivH4/GmqRoZ/7GhKDg/wDE1hHP/fI/WvRfAWvjxFoEt59m+zMly8LxecsuCoH8S8d6mUXa/wCqGpK9jdl02GYcy3S/7lzIv8mrJvvBOh6p5f8AaVu995efL+1yGUpnGcFs46CuhorNSa2HZHI/8Kx8H/8AQDtP+/K/4Up+GXg8qQdDtMEY4iUfyFdbRT55dwsjlE+G3hJLaG2/saCSGAMIll+fYGYsQC2SOSTTh8N/Bw/5l6wP1hFdTRRzS7hZHNL8PfCC/wDMu6cfrAprY03SNP0aBoNNs4rWFm3GOJdq59cdKu0UnJvdhZH/2Q=="
I hope it helped you!
Cheers

Answer 2

try this
class ImageConverter {
func base64ToImage(_ base64String: String) -> UIImage? {
guard let imageData = Data(base64Encoded: base64String) else { return nil }
return UIImage(data: imageData)
}
func imageToBase64(_ image: UIImage) -> String? {
return image.jpegData(compressionQuality: 1)?.base64EncodedString()
}
}