Swift

Question

我做了一个带按钮的菜单。选择按钮后，我想将所选按钮的索引传递给函数以进行计算。我能够获取所选按钮的值，但无法获取索引值。我是 Swift 的新手，此时卡住了。一定是一件容易的事情，但还找不到解决方案。见下图：

在下面的代码中，我想在以下语句中传递索引（整数）：

ContentView.displayDate = myPict.myFirstDayMonth (maand: gekozenMaand)

代码：

let hoofdstukTabel = [" 1 - Impact", " 2 - Change", " 3 - Portfolio", " 4 - Innovation", " 5 - Analysis", " 6 - Digital", " 7 - Effectiveness", " 8 - Sport & Fun", " 9 - Strategy", "10 - Structure", "11 - Value", "12 - Management"]

        var body: some View {
            
            VStack {
            
                Menu {
                    ForEach(hoofdstukTabel, id: \.self) { action in
                       Button(action) {
                       let gekozenMaand = "\(action)"
                       ContentView.displayDate = myPict.myFirstDayMonth (maand: gekozenMaand)
                       curDate = myPict.myPicture()
                       }
                    }
                } label: {
                        Label(myPict.myChapter(), systemImage: "diamond")
                            .font(.footnote)
                            .foregroundColor(Color.gray)
                     }

Answer 1

您可以使用枚举序列来获取每个元素的索引和字符串。

ForEach(Array(hoofdstukTabel.enumerated()), id: \.1) { index, action in
    // your content
}

Swift - 如何在菜单中选择按钮时获取索引

Swift - How to get the index when a button is selected in a menu

indexing

xcode

menu

button