Question

我收到错误消息

Value of type '[Voucher]' has no member 'currency'.
Value of type '[Voucher]' has no member 'shopName'.
Value of type '[Voucher]' has no member 'value'.

在这里我得到了错误（ContentView）：

@ObservedObject var voucherData = VoucherData()

var body: some View {
    NavigationView {
        ZStack {
            List(voucherData.voucherList) { voucher in
                NavigationLink(destination: EditView(value: self.$voucherData.voucherList.value, currency: self.$voucherData.voucherList.currency, shopName: self.$voucherData.voucherList.shopName)) {
                            VStack() { ...

在另一个文件中，定义了列表：

import SwiftUI
import Combine

struct Voucher : Identifiable {
    var value : String = ""
    var currency : String = ""
    var shopName : String = ""
}

final class VoucherData: ObservableObject {
    @Published var voucherList: [Voucher] = [
        .init(value: "20", currency: "USD", shopName: "FlyBurger")]
}

Answer 1

这是因为您尝试访问数组而不是单个对象，所以将代码更改为

<a href="so.php?edit=' . $row['sonum'] . '" class="btn btn-info">Edit</a>

也就是说，由于List遍历给定的数组var body: some View { NavigationView { ZStack { List(voucherData.voucherList) { voucher in NavigationLink(destination: EditView(value: voucher.value, currency: voucher.currency, shopName: voucher.shopName)) { VStack() { ...，并将每个元素作为参数发送给闭包voucherData.voucherList，因此您应该在闭包内使用该参数

SwiftUI-错误-类型值没有成员

1 个答案: