如何在 SwiftUI 里面实现一个 List View，其中每个 List 项是一个 WKWebView

我想在 SwiftUI 里面实现一个 List View,其中每一个 list 项就是一个 WKWebView 。就像一个论坛的帖子，每个跟帖就是一个 list 项目，每个跟帖的数据是一个 html 字符串，可能里面有图片或其他东西。

但是我的代码实现（在最末尾是全部代码）加载速度超级慢。如果往下滑动，好多项目还没加载，如果再往上滑动，加载的项目也没有了。伴随有很多错误。就像这样的

2020-08-08 22:44:15.493387-0700 WKWebViewTest[2205:76254] WF: === Starting WebFilter logging for process WKWebViewTest 2020-08-08 22:44:15.493682-0700 WKWebViewTest[2205:76254] WF: _userSettingsForUser : (null) 2020-08-08 22:44:15.493865-0700 WKWebViewTest[2205:76254] WF: _WebFilterIsActive returning: NO 2020-08-08 22:44:15.622585-0700 WKWebViewTest[2205:76254] WF: _userSettingsForUser : (null) 2020-08-08 22:44:15.622787-0700 WKWebViewTest[2205:76254] WF: _WebFilterIsActive returning: NO

我不知道究竟如何才能实现这样一个功能。请大神赐教

import SwiftUI
import WebKit

struct ContentView: View {
    init() {
        UITableView.appearance().separatorStyle = .none
        UITableViewCell.appearance().selectionStyle = .none
        UITableViewCell.appearance().backgroundColor = UIColor.clear
        UITableView.appearance().backgroundColor = UIColor.clear
    }

    let htmlText = "<p>This is the paragraph</p>"
    
    var body: some View {
        List{
            ForEach(0...20, id: \.self) { _ in
                VStack {
                    PostWebView(text: self.htmlText)
                        .frame(height: 50)
                    Divider()
                }
            }
        }
        .listRowInsets(.init(top: 0, leading: 0, bottom: 0, trailing: 0))
    }
}

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

struct PostWebView : UIViewRepresentable {
    let text: String
    
    init(text: String) {
        self.text = text
    }

    class Coordinator: NSObject, WKNavigationDelegate {
        var parent: PostWebView

        init(_ parent: PostWebView) {
            self.parent = parent
        }
    }

    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }

    func makeUIView(context: Context) -> WKWebView  {
        let webview = WKWebView()
        webview.scrollView.bounces = false
        webview.scrollView.isScrollEnabled = false
        webview.navigationDelegate = context.coordinator
        let htmlStart = "<HTML><HEAD><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, shrink-to-fit=no, maximum-scale=1.0, user-scalable=no\"></HEAD><BODY>"
        let htmlEnd = "</BODY></HTML>"
        let postHtml = text
        let htmlString = "\(htmlStart)\(postHtml)\(htmlEnd)"
        webview.loadHTMLString(htmlString, baseURL:  nil)
        return webview
    }

    func updateUIView(_ uiView: WKWebView, context: Context) {
    }
}