How to declare GMSMapViewDelegate on SwiftUI - swiftui

Question

I'm trying to implement a solution with GoogleMapsApi with a map where user can touch the map and do things. For that, I understand delegate must be implemented, but I can't figure out how to achieve that with SwifUI. There's a lot of code samples on web, when in Swift, or even Objective C, but I couldn't find any on SwifUI.
Here's what I did (I'm trying to keep this code as simple as it could be):
struct GoogleMapsHomeView: UIViewRepresentable {
func makeUIView(context: Self.Context) -> GMSMapView {
let mapView = GMSMapView.map()
return mapView
}
func updateUIView(_ mapView: GMSMapView, context: Context) {
}
}
struct HomeView: View {
var body: some View {
GoogleMapsHomeView()
}
}
struct HomeView_Previews: PreviewProvider {
static var previews: some View {
HomeView()
}
}
How to declare GMSMapViewDelegate and related listener for a user map moving detection?

Answer 1

The common pattern is to use coordinator as delegate
struct GoogleMapsHomeView: UIViewRepresentable {
func makeUIView(context: Self.Context) -> GMSMapView {
let mapView = GMSMapView.map()
mapView.delegate = context.coordinator
return mapView
}
func makeCoordinator() -> Coordinator {
Coordinator(owner: self)
}
func updateUIView(_ mapView: GMSMapView, context: Context) {
}
class Coordinator: NSObject, GMSMapViewDelegate {
let owner: GoogleMapsHomeView // access to owner view members,
init(owner: GoogleMapsHomeView) {
self.owner = owner
}
// ... delegate methods here
}
}