How to pass binding objects in other views? - swiftui

Question

I'm trying to pass textField values from one view to another, from AdressView to ShoppingView
struct AdressView: View {
#State var city = ""
#State var adress = ""
#State var houseNumber = ""
#State var flatNumber = ""
var body: some View {
NavigationLink(destination: ShoppingView(city: $city, adress: $adress, houseNumber: $houseNumber, flatNumber: $flatNumber)) {
Button {
} label: {
Text("Save")
.padding()
.foregroundColor(Color.blue)
}
}
struct ShoppingView: View {
#Binding var city: String
#Binding var adress: String
#Binding var houseNumber: String
#Binding var flatNumber: String
HStack {
Text("City:")
Spacer()
Text(city)
}
}
The problem is that ShoppingView is one of the tab items and I can't understand how I should pass binding objects of ShoppingView in MainView. I declared
#State var city = ""
#State var adress = ""
#State var houseNumber = ""
#State var flatNumber = ""
ShoppingView(city: $city, adress: $adress, houseNumber: $houseNumber, flatNumber: $flatNumber)
.tabItem {
Text("Cart")
Image(systemImage: "cart")
}
But this's not showing in ShoppingView any textField values, which I entered in AdressView.

Answer 1

I suppose ou want something like this: You should define your #State vars in Main View and then pass them down to both AdressView and ShoppingView.
struct AdressView: View {
#Binding var city: String
#Binding var adress: String
#Binding var houseNumber: String
#Binding var flatNumber: String
var body: some View {
NavigationView {
Form {
TextField("City", text: $city)
TextField("Adress", text: $adress)
TextField("House Number", text: $houseNumber)
TextField("Flat Number", text: $flatNumber)
NavigationLink(destination: ShoppingView(city: $city, adress: $adress, houseNumber: $houseNumber, flatNumber: $flatNumber)) {
Button {
} label: {
Text("Save")
.padding()
.foregroundColor(Color.blue)
}
}
}
}
}
}
struct ShoppingView: View {
#Binding var city: String
#Binding var adress: String
#Binding var houseNumber: String
#Binding var flatNumber: String
var body: some View {
VStack {
Text("Adress:")
Text(city)
Text(adress)
Text(houseNumber)
Text(flatNumber)
}
}
}
struct MainView: View {
#State var city = ""
#State var adress = ""
#State var houseNumber = ""
#State var flatNumber = ""
var body: some View {
TabView {
AdressView(city: $city, adress: $adress, houseNumber: $houseNumber, flatNumber: $flatNumber)
.tabItem {
Text("Adress")
Image(systemName: "pin.fill")
}
ShoppingView(city: $city, adress: $adress, houseNumber: $houseNumber, flatNumber: $flatNumber)
.tabItem {
Text("Cart")
Image(systemName: "cart")
}
}
}
}