ios – Can somebody assist me with my trimming to picture width operate?

Picture Class with consumer scroll modifying

I am making a Picture Class Perform addImage that shrinks the picture to the body width measurement, the crops it, and put it aside to firebase.

I plan on including the power to avoid wasting a uncropped picture additionally, so the crop origin level will be edited later by the consumer, much like bigger social media apps. I will replace that a part of the code on this class and publish it right here after I get that far.

Present Challenge

The difficulty i am dealing with now could be within the creation of a CGImage from the UIImage.CGImage.
The CGImage is returning nil when i am creating it.

class ImageData: Decodable {
    var title: String?
    var knowledge: Information?
}

class Picture {
    var title: String = UUID().uuidString
    var picture: UIImage?
    var knowledge: Information?
    var body: CGRect?
    
    init() {
        self.picture = UIImage(named: self.title)
    }
    
    func addData(picture: UIImage, body: CGRect) {
        self.picture = picture
        self.body = body
    }
    
    func reintalizeImage() {
        self.picture = UIImage(knowledge: self.knowledge!)!
    }
    
    
    func addImage() {
        do {
            print(picture?.cgImage?.bytesPerRow)
            

            let uiimg = UIImage(useful resource: ImageResource(title: "image-placeholder.jpg", bundle: .most important))
         
            let bitMapInfo: CGBitmapInfo = CGBitmapInfo(rawValue: (picture?.cgImage!.bitmapInfo.rawValue)!)
            
            let cgIMG = (picture?.cgImage)! as CGImage
            
            let intent = CGColorRenderingIntent(rawValue: cgIMG.renderingIntent.rawValue)
            
            let ImgFrame = body! as CGRect
            
            let widthDifference = Int(CGFloat(cgIMG.width) - ImgFrame.width)
            
            let colorSpace: CGColorSpace = CGColorSpace(title: CGColorSpace.sRGB)!;
            
            let newCGImage: CGImage = CGImage(width: Int(ImgFrame.width), peak: Int(cgIMG.peak - widthDifference), bitsPerComponent: cgIMG.bitsPerComponent, bitsPerPixel: 72, bytesPerRow: cgIMG.bytesPerRow, house: colorSpace, bitmapInfo: bitMapInfo, supplier: cgIMG.dataProvider!, decode: cgIMG.decode, shouldInterpolate: false, intent: intent!)!
            
            let newCroppedCGImage = newCGImage.cropping(to: body!)!
            
            let croppedImage = UIImage(cgImage: newCroppedCGImage)
            let storage = Storage.storage(url:"gs://realtime-missions-images")
            let storageRef = storage.reference()
            let fileRef = storageRef.little one(title + ".txt")
            
            // metadata --> uid, imageID,
            let uploadTask = fileRef.putData(croppedImage.pngData()!, metadata: nil) { (metadata, error) in
                if let error = error {
                    print(error)
                }
                
            }
        } catch {
            print(error)
        }
    }
    
    func loadImage(imageID: String) {
        
        do {
            var json = ["requestType":"loadImage", "imageID": imageID]  as [String : Any]
            let knowledge = attempt JSONSerialization.knowledge(withJSONObject: json)
            let url = URL(string: "https://us-central1-realtime-missions.cloudfunctions.web/location-check")!
            var request = URLRequest(url: url)
            request.httpMethod = "POST"
            request.httpBody = knowledge
            request.addValue("software/json", forHTTPHeaderField: "Content material-Kind")
            request.addValue("/", forHTTPHeaderField: "Settle for")
            let job = URLSession.shared.dataTask(with: request) { knowledge, response, error in
                let statusCode = (response as! HTTPURLResponse).statusCode

                if statusCode == 200 {
                    print("SUCCESS")
                    do {
                        if let knowledge = knowledge {
                        let decoder = JSONDecoder()
                        let imageData = attempt JSONDecoder().decode(ImageData.self, from: knowledge)
                        self.title = imageData.title!
                        self.knowledge = imageData.knowledge!
                            self.reintalizeImage()
                        }
                    } catch {
                        print(error)
                    }
                } else {
                    print("FAILURE")
                }
            }
            job.resume()
        } catch {
            print(error)
        }
    }
}

Edited:

• I eliminated a variety of the optionals. However i am nonetheless getting an error on
  creating a brand new CGImage with the init. It return nil.

At present Working On:

I’ll attempt to scale back the bytes per row worth primarily based on the picture measurement discount ratio. That could be the place the difficulty is.