使用 MapKit 导致不允许从视图更新中发布更改，这将导致未定义的行为

Question

使用 Swift 5.7、XCode 14.0、iOS 16.0、

尝试使 MapKit 示例工作时，我在 XCode 控制台中收到非常奇怪的错误消息和警告。

这是日志：

2022-11-01 17:26:51.756834+0100 myApp[3999:834036] Metal API Validation Enabled
2022-11-01 17:26:52.139973+0100 myApp[3999:834036] [PipelineLibrary] Mapping the pipeline data cache failed, errno 22
2022-11-01 17:26:52.192482+0100 myApp[3999:834036] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=7 "(null)""
2022-11-01 17:26:53.884031+0100 myApp[3999:834036] [SwiftUI] Publishing changes from within view updates is not allowed, this will cause undefined behavior.
2022-11-01 17:26:53.900265+0100 myApp[3999:834036] [SwiftUI] Publishing changes from within view updates is not allowed, this will cause undefined behavior.

似乎在 SwiftUI 中，Published 变量与 Bindings 的处理方式发生了变化。

我认为，核心问题在 here 中得到了很好的描述。

而且我假设 Apple 还没有在他们自己的 API 中完成向这种新的 SwiftUI4 行为的过渡。

或者有什么办法可以让Publishing changes bla bla 警告消失？？

请在下面查看我的完整代码：

//
//  MyView.swift
//  myApp
//

import SwiftUI
import MapKit

struct MyView: View {
    
    @State private var showMap = false
    @State private var region = MKCoordinateRegion(
            center: CLLocationCoordinate2D(
                latitude: 37.8879948,
                longitude: 4.1237047
            ),
            span: MKCoordinateSpan(
                latitudeDelta: 0.05,
                longitudeDelta: 0.05
            )
        )
    @State private var locations: [Location] = [Location(name: "Test", description: "", latitude: 37.8879948, longitude: 4.1237047)]
    @State private var isLoading = false
    
    var body: some View {
        
        Map(coordinateRegion: $region,
            annotationItems: locations,
            annotationContent: { location in
                MapAnnotation(
                    coordinate: CLLocationCoordinate2D(latitude: location.latitude, longitude: location.longitude)
                ) {
                    VStack {
                        Image("THPin")
                            .resizable()
                            .scaledToFit()
                            .frame(width: 44, height: 44)
                        ZStack {
                            Text(location.name)
                                .padding(5)
                                .font(.subheadline)
                                .background(.white.opacity(0.5), in: Capsule())
                        }
                    }
                }
            }
        )
    }
}

Answer 1

同样的问题！我发现如果将 MapAnnotation 替换为 MapMarker，问题就会消失。问题很可能出在图书馆本身