如何正确地将ImagePicker插入到header中的图像？SwiftUI

import SwiftUI
import UIKit

struct ContentView: View {
    @State private var selectedImage: UIImage?
    @State private var isShowingImagePicker = false
    
    var body: some View {
        NavigationView {
            VStack {
                Text("Your Content Here")
            }
            .navigationBarTitle("Header", displayMode: .inline)
            .navigationBarItems(trailing: Button(action: {
                self.isShowingImagePicker = true
            }) {
                Image(systemName: "photo")
            })
            .sheet(isPresented: $isShowingImagePicker) {
                ImagePicker(selectedImage: self.$selectedImage)
            }
        }
    }
}

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

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}