Swift: pass ARView to Coordinator - swift

Question

really stuck on this.
I'm trying to pass ARView from MakeUIView to makeCoordinator
I really need this to use ARView inside of #objc func handleTap
struct ARViewContainer: UIViewRepresentable{
func makeUIView(context: Context) -> ARView {
let myARView = ARView(frame: .zero)
//...config and things….
let tapGesture = UITapGestureRecognizer(target: context.coordinator, action: #selector(context.coordinator.handleTap(_:)))
myARView.addGestureRecognizer(tapGesture)
return myARView
}
func makeCoordinator() -> Coordinator {
Coordinator("whatshouldiusehere", self.$focusObject, self.$focusName)
}
class Coordinator: NSObject {
private let view: ARView
private var object: Binding<Entity?>
private var objectname: Binding<String?>
init(_ view: ARView, _ obj: Binding<Entity?>, _ objname: Binding<String?>) {
self.objectname = objname
self.object = obj
self.view = view
super.init()
}
#objc func handleTap(_ sender: UIGestureRecognizer? = nil) {
guard let touchInView = sender?.location(in: view) else {
return
}
guard let hitEntity = view.entity(at: touchInView) else {return}
//doing something with object here, assigning to #Binding for example
}
}
}
I can't move myARView = ARView(frame: .zero) outside of makeUIView, cuz I'm using SwiftUI and it inits every time when variables changes.
But how I can pass it in any way?
Or any other option to access Binding with ARView same time.

Answer 1

A coordinator is available via context, so you can inject it via property, like
struct ARViewContainer: UIViewRepresentable{
func makeUIView(context: Context) -> ARView {
let myARView = ARView(frame: .zero)
//...config and things….
let tapGesture = UITapGestureRecognizer(target: context.coordinator, action: #selector(context.coordinator.handleTap(_:)))
myARView.addGestureRecognizer(tapGesture)
context.coordinator.view = myARView // << inject here !!
return myARView
}
func makeCoordinator() -> Coordinator {
Coordinator(self.$focusObject, self.$focusName)
}
class Coordinator: NSObject {
var view: ARView? // << optional initially
private var object: Binding<Entity?>
private var objectname: Binding<String?>
init(_ obj: Binding<Entity?>, _ objname: Binding<String?>) {
self.objectname = objname
self.object = obj
super.init()
}
// ... other code update accordingly
}