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Issue with computed property not being updated for showing Sheet

Forums > SwiftUI


This code has the following issue: The first click on any list item will show the sheet with "This is sheet 0" - meaning that @State property "var example: Int" is not updated as part of the button code (exit live preview and start again, will reproduce the issue)

Any idea what is happening here !?


import SwiftUI

struct testing2: View {
    @State private var showSheet = false
    @State var example: Int = 0
    var computedItem: String {
        "This is sheet \(example)"

    var body: some View {
        List(0 ..< 5) { item in
            Button("List item: \(item)") {
                self.example = item
        .sheet(isPresented: $showSheet, content: {

struct testing2_Previews: PreviewProvider {
    static var previews: some View {


    private var showSheet = false
    private var number: Int = 0

    var body: some View {
        List {
            ForEach(0..<5) { item in
                    action: {
                        number = item
                    label: {
                        Text("Item: \(item)")
            isPresented: $showSheet) {
            Text("This is sheet: \(number)")

This works as expected.




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