Realm list data in Swift is saving but not loading properly. New to this and not sure what the problem is. Code below - swift

Question

Below is my main view controller. The user selects images of clothing which are then categorized using CoreML and given a filename. Then, data is saved to Realm. When I call the function loadClothing(), the array is empty even though items were added during func detect. Any help is much appreciated!
import UIKit
import PhotosUI
import RealmSwift
import CoreML
import Vision
class ViewController: UIViewController, PHPickerViewControllerDelegate {
#IBOutlet weak var shoesImageView: UIImageView!
#IBOutlet weak var shirtImageView: UIImageView!
#IBOutlet weak var pantsImageView: UIImageView!
var documentsUrl: URL {
return FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
}
let realm = try! Realm()
var clothing: Results<Clothing>?
override func viewDidLoad() {
super.viewDidLoad()
loadClothing()
let clothingArray = Clothing()
print(clothingArray)
}
#IBAction func addClothesButton(_ sender: UIBarButtonItem) {
pickPhotos()
}
#IBAction func randomizeButton(_ sender: UIBarButtonItem) {
loadClothing()
let clothingArray = Clothing()
print(clothingArray)
shirtImageView.image = load(fileName: clothingArray.shirtImages.randomElement()!)
pantsImageView.image = load(fileName: clothingArray.pantsImages.randomElement()!)
shoesImageView.image = load(fileName: clothingArray.shoesImages.randomElement()!)
}
//MARK: - PHPickerViewController
#objc func pickPhotos() {
var config = PHPickerConfiguration()
config.selectionLimit = 25
config.filter = PHPickerFilter.images
let pickerViewController = PHPickerViewController(configuration: config)
pickerViewController.delegate = self
self.present(pickerViewController, animated: true, completion: nil)
}
// MARK: - PHPickerViewControllerDelegate
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
picker.dismiss(animated: true, completion: nil)
for result in results {
result.itemProvider.loadObject(ofClass: UIImage.self) {(object, error) in
if let image = object as? UIImage {
DispatchQueue.main.async {
guard let fileName = result.itemProvider.suggestedName else {
fatalError("Could not retrieve file name.")
}
print(fileName)
guard let ciImage = CIImage(image: image) else {
fatalError("Could not convert to CI Image.")
}
self.detect(image: ciImage, fileName: fileName)
}
}
}
}
}
// MARK: - Core ML
func detect(image: CIImage, fileName: String) {
guard let model = try? VNCoreMLModel(for: ClothingClassifier(configuration: MLModelConfiguration()).model) else {
fatalError("Loading CoreML Model failed.")
}
let request = VNCoreMLRequest(model: model) { (request, error) in
guard let results = request.results as? [VNClassificationObservation] else {
fatalError("Model failed to process image.")
}
let newClothing = Clothing()
if let firstResult = results.first {
let uiImage = UIImage(ciImage: image)
if firstResult.identifier.contains("shirts") {
newClothing.shirtImages.append(fileName)
} else if firstResult.identifier.contains("pants"){
newClothing.pantsImages.append(fileName)
} else if firstResult.identifier.contains("shoes") {
newClothing.shoesImages.append(fileName)
}
self.save(clothing: newClothing)
print(newClothing)
}
}
let handler = VNImageRequestHandler(ciImage: image)
do {
try handler.perform([request])
}
catch {
print(error)
}
}
// MARK: - Data Manipulation Methods
func save(clothing: Clothing) {
do {
try realm.write {
realm.add(clothing)
}
} catch {
print("Error saving uploaded clothing. \(error)")
}
}
func loadClothing() {
clothing = realm.objects(Clothing.self)
print("loaded")
}
private func load(fileName: String) -> UIImage? {
let fileURL = documentsUrl.appendingPathComponent(fileName)
do {
let imageData = try Data(contentsOf: fileURL)
return UIImage(data: imageData)
} catch {
print("Error loading image : \(error)")
}
return nil
}
}
Clothing Class
import Foundation
import RealmSwift
class Clothing: Object {
let shirtImages = List<String>()
let pantsImages = List<String>()
let shoesImages = List<String>()
}