使用 ForEach 循环两个 arrays 不同类型的项目（字符串和图像） SwiftUI

Question

In stead to have an array of image under an array of text, I would like to have one array alternatively with image or text depending if I push the button text or the button picture.

Here is what I have tried:

struct HistoryPicture: Identifiable {let id = UUID ()
var picture: Image?}

struct HistoryText: Identifiable {let id = UUID ()
    var text: String?}

struct ContentView: View {

@State var archivePicture: [HistoryPicture] = []
@State var archiveText: [HistoryText] = []

var body: some View {ScrollView{

        VStack(spacing:20){
            
                ForEach(self.archiveText) { item in
                        Text("<text>")
                        }

                ForEach(self.archivePicture) { item in
                    Image("simpson")
                        }
      // Button Text

            HStack{

                Button {var newHistory = HistoryText()
                    newHistory.text = "<text>"
                   self.archiveText.append(newHistory)

                } label: { Circle()
                             .fill(Color.black)
                             .frame(width: 70, height: 70)} }

    // Button Picture

            HStack{

                Button {var newHistoryPicture = HistoryPicture()
                        newHistoryPicture.picture =     Image("simpson")
                        self.archivePicture.append(newHistoryPicture)

                    } label: { Circle()
                                 .fill(Color.red)
                                 .frame(width: 70, height: 70)
                    }} }} }}

Answer 1

With this solution you get the results in the order the buttons were pressed. For that you just need one ForEach with one struct. If you want more complex views inside the ForEach, I would suggest using Protocols or inheritance.

struct HistoryItem: Identifiable {
    let id = UUID()
    var text: String?
    var imageName: String?
}

struct ContentView: View {
    @State var items = [HistoryItem]()
    
    var body: some View {
        ScrollView {
            VStack(spacing: 20){
                ForEach(items) { item in
                    if let text = item.text {
                        Text(text)
                    } else if let imageName = item.imageName {
                        Image(imageName)
                    }
                }
                
                HStack {
                    Button {
                        let newItem = HistoryItem(text: "<text>")
                        items.append(newItem)
                    } label: {
                        Circle()
                            .fill(Color.black)
                            .frame(width: 70, height: 70)
                    }
                    
                    Button {
                        let newItem = HistoryItem(imageName: "simpson")
                        items.append(newItem)
                    } label: {
                        Circle()
                            .fill(Color.red)
                            .frame(width: 70, height: 70)
                    }
                }
            }
        }
    }
}