将带有动态数据的变量从 UITableViewCell 传递到 SwiftUI View

Question

在我的应用程序中，我存储了一个具有不同手指测量值的变量。不同的手指测量值在 UITableViewCell 中有值，但在 SwiftUI 视图中显示为 nil。

在 UITableViewCell 中，我将变量设为已发布变量。然后我去了 SwiftUI 视图并尝试了@ObservedObject，然后在@ObservedObject 不起作用时尝试了@StateObject。同样，UITableViewCell 中的日志显示值，但 SwiftUI 视图中的日志显示为 nil，默认为 0。

以下是发布的 var 代码的 sn-ps 以及类型。然后是我尝试传递变量的 SwiftUI 视图的 sn-p。

struct SaveNailImagesResponse: Codable {
    var id: Int?
    var leftIndexLength: Double?
    var leftIndexSize: Int?
    var leftIndexWidth: Double?
    var leftMiddleLength: Double?
    var leftMiddleSize: Int?
    var leftMiddleWidth: Double?
    var leftPinkyLength: Double?
    var leftPinkySize: Int?
    var leftPinkyWidth: 
}

/// SNIPPET OF UITABLEVIEWCELL

class HandMeasurementsTableViewCell: UITableViewCell, ObservableObject {
 @Published var fingerSizeData: SaveNailImagesResponse? {
        didSet {
            self.tableView.reloadData()
            print(self.fingerSizeData?.leftIndexSize as Any)
            print(self.fingerSizeData?.leftRingSize as Any)
            print(self.fingerSizeData?.leftMiddleSize as Any)
        }
    }
}

/// HERE IS SNIPPET OF SWIFTUI VIEW: I tried passing it a 2 different ways below but comes up as nil and defaults to 0 every time

struct ResultsThumbnailView1: View {
    
    @Environment(\.presentationMode) var presentationMode
    
    @ObservedObject var data: HandMeasurementsTableViewCell = HandMeasurementsTableViewCell()
        
    var body: some View {
            VStack {

                Text(String(self.data.fingerSizeData?.leftRingSize ?? 0))
            
                Text("Size \(String(data.fingerSizeData?.leftIndexSize ?? 0))")
                .font(.system(size: 19, weight: .bold))
        }
    }
}

// VIEW CONTROLLER WHERE EVERYTHING CONNECTS

class ResultsSizesViewController: UIViewController {

    @IBOutlet weak var tableView: UITableView!
    
    var resultsData: SaveNailImagesResponse?
    
    private var thumbnailButton: UIButton = {

        let button = UIButton(type: .custom)
        button.setImage(UIImage(systemName: "camera.circle"), for: .normal)
        button.tintColor = .black
        button.addTarget(self, action: #selector(presentThumbnailPage), for: .touchUpInside)

        return button
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()

        ["HandMeasurementsTableViewCell"].forEach( {
            tableView.register(UINib.init(nibName: $0, bundle: nil), forCellReuseIdentifier: $0)
        })
        
        tableView.delegate = self
        tableView.dataSource = self
        
        setNavBar(backButtonAvailable: true, title: "Results")
        setUI()
        thumbnailButtonConstraints()
    }
    
    @objc func presentThumbnailPage() {
        let vc = UIHostingController(rootView: ResultsThumbnailTabView())
        vc.modalPresentationStyle = .fullScreen
        self.navigationController?.present(vc, animated: true)
        
    }

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "HandMeasurementsTableViewCell") as? HandMeasurementsTableViewCell
        let data = self.resultsData
        cell?.fingerSizeData = data
        
        if indexPath.row == 0 {
            cell?.titleLabel.text = "Left Hand"
        } else if indexPath.row == 1 {
            cell?.titleLabel.text = "Right Hand"
        }
        
        return cell!
    }

func thumbnailButtonConstraints() {
        view.addSubview(thumbnailButton)
        thumbnailButton.translatesAutoresizingMaskIntoConstraints = false
        
        NSLayoutConstraint.activate([
            
            thumbnailButton.topAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.topAnchor, constant: 20),
            thumbnailButton.trailingAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.trailingAnchor, constant: -20),
            thumbnailButton.heightAnchor.constraint(equalToConstant: 20),
            thumbnailButton.widthAnchor.constraint(equalToConstant: 20),
        ])
        
        thumbnailButton.addTarget(self, action: #selector(presentThumbnailPage), for: .touchUpInside)
    }
}

Answer 1

struct ResultsThumbnailView: View {
    
    let resultsData: SaveNailImagesResponse

let vc = UIHostingController(rootView: ResultsThumbnailView(resultsData: resultsData))