我使用函式創建了視圖，并且我從另一個視圖（AbcView）呼叫它，我想正常執行@Binding，但不知道如何傳遞值并@Binding在函式中創建。
在下面的代碼中，我想在值更新時從函式傳遞并selectedPassengerId執行AbcView@Binding topSheetClassViews，以便我可以獲得更新的值。passengerIdsSelectedTitleViewAbcView
import SwiftUI
struct AbcView: View {
@StateObject var abcViewModel: AbcViewModel
@State private var selectedPassengerId: Int?
init(accessibiltyID: String, abcViewModel: AbcViewModel) {
self._abcViewModel = StateObject(wrappedValue: abcViewModel)
}
var body: some View {
VStack(spacing: 0) {
// Some Design
}
.overlay(
TopView((accessibilityID: accessibilityID, content: topSheetClassViews(abcViewModel: abcViewModel), selectedRowID: $selectedPassengerId, rowHeight: $rowHeight),, alignment: .top
)
)
}
}
func topSheetClassViews(abcViewModel: AbcViewModel) -> [AnyView] {
var views: [AnyView] = []
for passenger in 0..<abcViewModel.Passengers.count {
views.append(TopSheetPassengerInfoView(abcViewModel: abcViewModel, index: passenger).convertToAnyView())
}
return views
}
struct SelectedTitleView: View {
@ObservedObject var abcViewModel: AbcViewModel
var passengerIds: Int
var body: some View {
VStack(alignment: .trailing) {
Text("passengerIds \(passengerIds)") // here getting correct id which I want to pass to AbcView
Text(abcViewModel.passengerTitle(passengerId: passengerIds))
}
}
}
struct TopSheetPassengerInfoView: View {
@ObservedObject var abcViewModel: AbcViewModel
var index: Int
var body: some View {
VStack(alignment: .leading, spacing: 0) {
Text(abcViewModel.passengers[index].fullName ?? "")
SelectedTitleView(abcViewModel: abcViewModel, passengerIds: Int(abcViewModel.Passengers[index].passengerId ?? "") ?? 0)
}
}
}
uj5u.com熱心網友回復：
只要把它放在你需要通過它的任何地方，比如
這里
func topSheetClassViews(abcViewModel: AbcViewModel, selection: Binding<Int?>) -> [AnyView] {
這里
views.append(TopSheetPassengerInfoView(abcViewModel: abcViewModel, selectedID: selection, index: passenger).convertToAnyView())
這里
struct TopSheetPassengerInfoView: View {
@ObservedObject var abcViewModel: AbcViewModel
@Binding var selectedID: Int?
等等
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