#Published Var not updating subview - ios

Question

My problem is that my #Published variable isn't updating my swiftui subview. It changes from false to true, however the view itself isn't updating. Below I pasted a very simplified version of my problem. Also, I passed the api variable that was created within the FirstView to the SubView, however the view still didn't change. If this isn't enough information and you are okay with looking at the full project I can share it down below.
import Foundation
import SwiftUI
struct FirstView: View {
#ObservedObject var Api = API()
var body: some View {
VStack{
SubView()
Button(action:{
Api.apicall()
}){
Text("search")
}
}
}
}
struct SubView:View{
#ObservedObject var daApi = API()
var array = [1,2,3]
var body: some View{
ForEach(0..<array.count){ number in
Text("\(number)")
}
if daApi.viewPresent == true{
Text("Swag")
}
}
}
class API:ObservableObject{
#Published var viewPresent:Bool = false
func apicall(){
viewPresent = true
//The Long ApiCall
viewPresent = false
}
}

Answer 1

Right now, you have 2 different instances of API. You need to share the same instance between both Views:
struct FirstView: View {
#ObservedObject var Api = API()
var body: some View {
VStack{
SubView(daApi: Api)
Button(action:{
Api.apicall()
}){
Text("search")
}
}
}
}
struct SubView:View{
#ObservedObject var daApi : API
var array = [1,2,3]
var body: some View{
ForEach(0..<array.count){ number in
Text("\(number)")
}
if daApi.viewPresent == true {
Text("Swag")
}
}
}
class API:ObservableObject{
#Published var viewPresent:Bool = false
func apicall(){
viewPresent = true
}
}
Also, in your apiCall, you set viewPresent to false and then true immediately again, so I removed one of those.
In Swift, generally variable names start with a lowercase letter -- Api should probably be changed to api.