Question

我正在尝试使用Combine将数据传递到TextField。通过创建数据模型并使用observableObject，但是当我在textField中使用它时，会显示错误。 无法将类型“字符串”的值转换为预期的参数类型“绑定<字符串>” 。我听不懂。

数据模型

struct People: Identifiable {
    var id = UUID()
    var name: String
    var amount: String
}

let peopleData = [
    People(name: "A",amount: ""),
    People(name: "B",amount: ""),
    People(name: "C",amount: "")
]

ObservableObject

import Combine
class PeopleAllData: ObservableObject{
    @Published var peopleStore: [People] = peopleData
}

文本字段

@ObservedObject var store = PeopleAllData()

                    List{

                        ForEach(store.peopleStore){ item in
                        HStack {
                            TextField("person Name", text: item.name) //Error:- Cannot convert value of type 'String' to expected argument type 'Binding<String>'

                            Button(action: {}) {
                                Image(systemName: "minus.circle")
                                    .foregroundColor(.red)
                            }
                        }
                            
                        }
                        
                        
                        
                    }
                    .frame(width: screen.width, height: screen.height)

Answer 1

您需要Binding才能通过ObservedObject排列元素，如下所示

ForEach(store.peopleStore.indices, id: \.self){ i in
    HStack {
        TextField("person Name", text: $store.peopleStore[i].name)

无法与TextField结合使用

1 个答案: