【SwiftUI】カメラロールのデータを取得する

import UIKit
import SwiftUI

struct ImagePickerDialog: UIViewControllerRepresentable {
    var sourceType: UIImagePickerController.SourceType = .photoLibrary
        
    @Binding var selectedImage: UIImage?
    @Environment(\.presentationMode) private var presentationMode
    
    func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePickerDialog>) -> UIImagePickerController {
        
        let imagePicker = UIImagePickerController()
        imagePicker.allowsEditing = false
        imagePicker.sourceType = sourceType
        imagePicker.delegate = context.coordinator
        
        return imagePicker
    }
    
    func updateUIViewController(_ uiViewController: UIImagePickerController, context: UIViewControllerRepresentableContext<ImagePickerDialog>) {
        
    }
    
    func makeCoordinator() -> Coordinator {
        return Coordinator(self)
    }
    
    final class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
        
        var parent: ImagePickerDialog
        
        init(_ parent: ImagePickerDialog) {
            self.parent = parent
        }
        
        func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
            
            if let image = info[.originalImage] as? UIImage {
                parent.selectedImage = image
            }
            
            parent.presentationMode.wrappedValue.dismiss()
        }
    }
}

import SwiftUI

struct ThemeSettingView: View {
    @State private var image: UIImage?
    @State var showingImagePicker = false
    
    var body: some View {
        LazyVStack(spacing: 0) {
            SlideView(title: "カスタム1", cell: [AnyView(MovieCell(themeModel: customThemeModel).onTapGesture {
                    self.showingImagePicker = true
                })])
        }
        .sheet(isPresented: $showingImagePicker) {
                ImagePickerDialog(sourceType: .photoLibrary,
                                  selectedImage: $image)
    }
}