These are the three views in my to do list project. I want to save data, so users' to do list will still be there after they launch the app. But whenever I click on the icon "check.circle' or "circle", they cannot switch immediately. They will switch after I launch the app again. I don't know how to let icon switched immediately. Thanks in advance!!! // Content View import SwiftUI struct ContentView: View { @EnvironmentObject var listViewModel: ListViewModel @State var newText: String = "" @State var detents: PresentationDetent = .medium @State var showSheet: Bool = false static var item1 = ItemModel(title: "First", isCompleted: false) var body: some View { NavigationView { List { ForEach(listViewModel.items) { item in ListRowView(item: item) .onTapGesture { listViewModel.updateItem(item: item). -> * } } .onDelete(perform: listViewModel.delete) .onMove(perform: listViewModel.moveItem) } .navigationTitle("To Do List") .navigationBarItems( leading: EditButton(), trailing: Button( action: { showSheet.toggle() }, label: { Text("Add") }) .sheet( isPresented: $showSheet, content: { SecondScreen() .presentationDetents([.height(500)]) } )) } } } // List View Model -> * func saveItems() { if let encodedData = try? JSONEncoder().encode(items) { UserDefaults.standard.set(encodedData, forKey: itemsKey) } } // Item Model import Foundation struct ItemModel: Identifiable, Codable { let id: String let title: String var isCompleted: Bool init(id: String = UUID().uuidString, title: String, isCompleted: Bool) { self.id = id self.title = title self.isCompleted = isCompleted } func updateCompletion() -> ItemModel {. -> * return ItemModel(id: id, title: title, isCompleted: !isCompleted) } }