TextField Xcode 11 Binding String problem - string

Question

I have a file called PDFManager , which is in charge to create and save the pdf file.
on PDFManager I create the var nameCPT : String = "" and from the ContentView i'm try to fill this var with a value from a textfield
problem is, Xcode give me the error say "Cannot convert value of type 'String' to expected argument type 'Binding'"
I tried on pdf manager create a var with #State but still not working
any idea how to pass the value of my textField to PDFManager?
thanks
import SwiftUI
struct ContentView: View {
var lm : PDFManager
var body: some View {
VStack {
fakebar
Spacer()
HStack {
TextField("Insert Nome CPT", text: lm.nameCPT).
// not working, I try with $lm.nameCPT but still not working
.padding(.leading)
}
Spacer()
}
}

Answer 1

You need to use #Observed property wrapper to allow the property being observed and comply with ObservableObject in your PDFManager class.
class PDFManager:ObservableObject {
var nameCPT:String = "test"
}
struct ContentView: View {
#ObservedObject var lm : PDFManager = PDFManager()
var body: some View {
VStack {
Spacer()
HStack {
TextField("Insert Nome CPT", text: $lm.nameCPT)
.padding(.leading)
Button(action:{
// Prints the value stored in your PDF manager
print(self.lm.nameCPT)
}){
Text("Check")
}
}
Spacer()
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}