SwiftUI 在 View 之间共享模型数据

Question

我有这样一个结构，这个结构对我来说似乎是错误的，因为我想问你的方法。因此，当我想在 1 个 View 中使用 2 个模型时，我必须将它放在一个 View 中的 foreach 中。这就是我要的。在我想要的其他页面上使用我在用户个人资料中使用的数据。我该怎么做？你们是怎么做到的？
让我举个例子让你更好地理解:
我想在主页上显示我的用户的用户名数据，我应该怎么做？事实上，在初始化我的模型一次之后，我想在其他 View 中使用它。什么是正确的方法。

  import SwiftUI

struct ContentView: View {
    @StateObject var network = ProfileNetwork()
    var body: some View {
        TabView{
            ProfileView().tabItem { Image(systemName: "house") }
            ForEach(self.network.userprofile,id:\.id){a in
                ShopView(profile_model: a)
            }.tabItem { Image(systemName: "house") }
        }
    }
}

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


class ProfileNetwork : ObservableObject {
    @Published var userprofile : [UserPRofile] = [UserPRofile(name: "Test", coin: 1, id: "dsa")]
}

struct ProfileView : View {
    @StateObject var network = ProfileNetwork()
    var body: some View {
        ForEach(self.network.userprofile, id:\.id){ i in
            ProfileViewModel(profile_model: i)
        }
    }
}

struct ProfileViewModel : View {
    var profile_model : UserPRofile
    var body: some View {
        Text(self.profile_model.name)
    }
}

struct UserPRofile : Decodable{
    var name : String
    var coin : Int
    var id : String
}

class ShopeNetwork : ObservableObject {
    @Published var shop : [ShopStore] = [ShopStore(id: "sda", image: "dasd", price: 100, name: "sda")]
}

struct ShopView : View {
    @StateObject var network = ShopeNetwork()
    var profile_model : UserPRofile
    var body: some View {
        ForEach(self.network.shop, id:\.id){ c in
            ShopViewModel(shop_model: c, profile_model: profile_model)
        }
    }
}

struct ShopViewModel : View {
    var shop_model : ShopStore
    var profile_model : UserPRofile
    var body: some View {
        Text(profile_model.name)
        Text(self.shop_model.name)
    }
}


struct ShopStore : Decodable {
    var id : String
    var image : String
    var price : Int
    var name : String
}

Answer 1

一个可能的解决方案是创建一个 @EnvironmentObject并在根级别注入(inject)它:

class AppState: ObservableObject {
    @Published var userProfile: UserPRofile?
}

@main
struct TestApp: App {
    @StateObject private var appState = AppState()

    var body: some Scene {
        WindowGroup {
            ContentView()
                .environmentObject(appState)
        }
    }
}

struct ProfileView: View {
    @EnvironmentObject private var appState: AppState // access as an `@EnvironmentObject`
    @StateObject var network = ProfileNetwork()
    var body: some View {
        VStack {
            ForEach(self.network.userprofile, id: \.id) { i in
                ProfileViewModel(profile_model: i)
            }
        }
        .onAppear {
            appState.userProfile = network.userprofile.first // set `userProfile` globally
        }
    }
}

struct ShopView: View {
    @EnvironmentObject private var appState: AppState // use it in any other view
    ...