尝试这种方法，当您按下提交按钮并从API响应中获取新数据后，使用NavigationStack和navigationDestination导航到新视图：
范例程式码：

struct ContentView: View {
    var body: some View {
        NavigationStack {
            FormView()
        }
    }
}

protocol MyServiceProtocol {
    func submit(title: String)
}

struct MyService: MyServiceProtocol {
    var name: String = "namename"
    func submit(title: String){ }
}

struct Post: Identifiable, Hashable {
    let id = UUID()
    var name: String = "PostPost"
}

class MyViewModel: ObservableObject {
    private var cancellables = Set<AnyCancellable>()
    let myService: MyServiceProtocol
    @Published var post: Post?
    
    init(myService: MyServiceProtocol) {
        self.myService = myService
    }

    func submit(title: String) {
        // simulated fetching and changing the model post
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
            self.post = Post(name: "newpostname") // <-- for testing
        }
    }
}

struct FormView: View {
    @StateObject private var vm = MyViewModel(myService: MyService())
    
    @State private var title: String = ""
    @State private var toNextView = false
    
    var body: some View {
        VStack {
            TextField("Type something", text: $title).border(.red)
            
            Button(action: onSubmit) {
                Text("Submit")
            }.buttonStyle(.bordered)
        }
        .onChange(of: vm.post) { oldValue, newValue in
            if vm.post != nil { // <-- adjust if need be
                toNextView = true
            }
        }
        .navigationDestination(isPresented: $toNextView) {
            TheNextView().environmentObject(vm)
        }
    }
    
    func onSubmit() {
        vm.submit(title: title)
    }
}

struct TheNextView: View {
    @EnvironmentObject var vm: MyViewModel
    
    var body: some View {
        Text("TheNextView post: \(vm.post?.name ?? "no name")")
    }
}

字符串
编辑1：
当然，您可以将post传递到下一个视图，例如：

.navigationDestination(isPresented: $toNextView) {
     TheNextView(post: vm.post)
 }
 
 struct TheNextView: View {
     @State var post: Post?
     
     var body: some View {
         Text("TheNextView post: \(post?.name ?? "no name")")
     }
 }

型