Use a Modal to Add an Item from a List in SwiftUI

Question

I would like to know how to add an item from a List included in a Modal so when I tap in a row, I can have the item selected in the First View that launched the sheet (to make clearer, the effect the you find when the iPhone app "Messages" select a contact from "Contacts").

Here's my basic code

struct Product : Hashable { 

  var name : String

  init(name: String) {
    self.name = name
  }

  func hash(into hasher: inout Hasher) {
    hasher.combine(name)
  }
}


class Manager {

  var product : [Product] = []

  init() {


    let pencil = Product(name: "Pencil")
    let eraser = Product(name: "Eraser")
    let ruler = Product(name: "Notebook")

    product = [pencil, eraser, ruler]

  }
}

---

struct FirstView: View {

  @State var isSheetOpened = false
  var products : Manager

  var body: some View {
      VStack {
      Button(action: {
          self.isSheetOpened.toggle()
      }) {
          Text("Add item from sheet")
      }
      .sheet(isPresented: self.$isSheetOpened) {
          Sheet(products: self.products, isSheetOpened: self.isSheetOpened)
      }

      Text("Add here")

    }
  }
}

---

struct Sheet: View {

  var products : Manager
  var isSheetOpened : Bool

  var body: some View {
      VStack {
          List {                
              ForEach(self.products.product, id: \.self) { index in
                Text(index.name)
            }
        }
    }
  }
}

Answer 1

check this out:

import SwiftUI

struct Product : Hashable {
    
    var name : String
    
    init(name: String) {
        self.name = name
    }
    
    func hash(into hasher: inout Hasher) {
        hasher.combine(name)
    }
}


class Manager : ObservableObject {
    
    @Published var chosenProducts : [Product] = []
    var products : [Product] = []
    
    init() {
        
        let pencil = Product(name: "Pencil")
        let eraser = Product(name: "Eraser")
        let ruler = Product(name: "Notebook")
        
        products = [pencil, eraser, ruler]
    }
}
struct ContentView: View {
    
    @EnvironmentObject var manager : Manager
    
    @State var isSheetOpened = false
    
    var body: some View {
        VStack {
            Button(action: {
                self.isSheetOpened.toggle()
            }) {
                Text("Add item from sheet")
            }
            Text("Chosen products")
                .font(.largeTitle)
            List {
                ForEach(self.manager.chosenProducts, id: \.self) { product in
                    Text(product.name)
                }
            }
            .sheet(isPresented: self.$isSheetOpened) {
                Sheet(isSheetOpened: self.$isSheetOpened)
                    .environmentObject(self.manager)
            }
            
            Text("Add here")
            
        }
    }
}

struct Sheet: View {
    
    @EnvironmentObject var manager : Manager
    
    @Binding var isSheetOpened : Bool
    
    var body: some View {
        VStack {
            List (self.manager.products, id: \.self) { product in
                Button(action: {
                    self.manager.chosenProducts.append(product)
                    self.isSheetOpened = false
                }) {
                    Text(product.name)
                }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView().environmentObject(Manager())
    }
}