json解码的存储结果突然消失/在WatchOS中观察到的对象不响应

问题描述

我将iPhone的json数据解码到手表，然后将其存储到一个声明为@ObservableObject的对象（自定义类：PeopleObj）中。但是，包含此对象的contenview无法获取数据

这是数据模型：

struct Person: Codable {
    var pid : UUID
    var dept: String
    var name: String

    init(pid: UUID,dept: String,name: String){
        self.pid = pid
        self.dept = dept
        self.name = name
    }
}
    
class PeopleObj: ObservableObject,Identifiable,Codable{
    @Published var people: [Person] = []
        
    // get codable
    init() { }
    
    enum CodingKeys: CodingKey {
        case people
    }
    
    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)
        try container.encode(people,forKey: .people)
        
    }
    required init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        people = try container.decode(Array.self,forKey: .people)
    }
}

以下是WatchOS的解码部分，在这里，我将json数据作为对请求的答复，并将其解码为peopleObj：

let jsonEncoder = JSONEncoder()
do {
    let jsonDataRequest = try jsonEncoder.encode(request)
    print("send request")
    self.session?.sendMessageData(jsonDataRequest,replyHandler: { response in
        print(">>>>>>>>>>>>>>>>> DATA-Reply vom iPhone received: \(response)")
        DispatchQueue.main.async {
            let jsonDecoder = JSONDecoder()
            do {
                self.peopleObj = try jsonDecoder.decode(PeopleObj.self,from: response)
                for person in self.peopleObj.people {
                    print("received person: \(person.name),dept \(person.dept)")
                    // here it prints correctly
                }
                                
            } // End do decode
            catch { print("decode catch!!!!!!!")  }
        } // Dispatch main
    },errorHandler: { error in
        print("Error sending message: %@",error)
    }) // sendMessageData
} // End do decode
catch { print("encode catch!!!!!!!")  }

这是contenview，观察对象：

struct ContentView: View {
        
    @ObservedObject var peopleObj: PeopleObj
        
    var body: some View {
     
        VStack {
            List(peopleObj.people,id: \.pid) { person in
                HStack {
                    Text("name: \(person.name)")
                    Spacer()
                    Text("dept: \(person.dept)")
                }
            }
        }
    }
}

我尝试将json解码为结构，然后将值手动添加到peopleObj-可以，但是对我来说似乎不是正确的过程！我无法解释原因，猜测它与值与引用有关。

任何帮助和/或想法都非常受欢迎！！！！

编辑：peopleObj在HostingController中定义：

    class HostingController: WKHostingController<ContentView>,WCSessionDelegate{
   
   @ObservedObject var peopleObj:PeopleObj = PeopleObj()

从HostingController调用ContentView

 override var body: ContentView {
     return ContentView(peopleObj: peopleObj)
}

解决方法

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