小编chr*_*ags的帖子

I am moving my swift project to Swift 5.5, taking advantage of async await and trying to learn the syntax effectively while I am at it.

I have been successful so far in moving some functions across - those within the FirebaseFirestore database: ".getDocuments()" and ".setData".

In these instances, the compiler recognizes what I am trying to do and suggests the 'async throws' version of the method, leaving out the completion parameter / closure. See screen shot here:

When I …

尝试以编程方式触发导航链接时遇到上述错误的问题。单击链接后，错误的目标数组元素将偶尔加载（相对于单击的标签），当然会显示上述错误。

当我以非编程方式触发导航链接时，不会发生错误，但当用户单击此链接时，我需要运行另一种方法。

我已经阅读了几个问题，例如此处和此处，但找不到我的案例的原因。

模型结构：

struct Place: Identifiable {
var id: UUID = UUID()
var name: String = ""
var testBool: Bool = false

}

环境对象的类：（生产项目有许多属性和方法 - 本质上这是 ViewModel）

class UserPlaces: ObservableObject {
@Published var placesArray: [Place] = [Place]([Place(name: "Christian", testBool: false),Place(name: "Catherine", testBool: true)])

}

导航布尔类：（生产项目这里有许多属性，我想将它们保留在一个类中）

class Navigation: ObservableObject {
@Published var showPlaceDetail: Bool = false

}

ContentView：（NavigationView所在的父视图）

import SwiftUI

结构ContentView：视图{

var body: some View {
    
    NavigationView {
        
        ScrollView {
            
            Text("Hello, world!")
                .padding()
            CardsGrid2()
            
        } // …