Hi communities

I want to define cameraPosition Latitude and longitude for map in view by 2 var ( LatTo and LonTo ) initialised by call a view

aff(LatTo: 50,LonTo: 6)

struct aff: View {

    var LatTo: String = ""
    var LonTo: String = ""

    init(LatTo: String,LonTo: String) {
        self.LatTo = LatTo
        self.LonTo = LonTo

    }

    @State var cameraPosition: MapCameraPosition = .region(MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: Double(LatTo)!, longitude: Double(LonTo)!), span: MKCoordinateSpan(latitudeDelta: 0.25, longitudeDelta: 0.25)))

    var body: some View {

    ...

But Xcode return

Cannot use instance member 'LatTo' within property initializer; property initializers run before 'self' is available
Cannot use instance member 'LonTo' within property initializer; property initializers run before 'self' is available

I understand the problem i can't use dynamic LatTo and LonTo for define cameraPosition, but if possible i want to use this structure, i begin in swift and i don't know to solve it

Thanks

You will need to setup the cameraPosition within the view init. Because it's a State var, the syntax is a little different.

I haven't used MapKit much, so I'm not sure I have the MapCameraPosition.region bit right, but this is how you work with a State var in the view init.

struct aff: View {

  var LatTo: String = ""
  var LonTo: String = ""

  @State var cameraPosition: MapCameraPosition

  init(LatTo: String,LonTo: String) {
    self.LatTo = LatTo
    self.LonTo = LonTo

    let newCameraPosition = MapCameraPosition.region(MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: Double(LatTo)!, longitude: Double(LonTo)!), span: MKCoordinateSpan(latitudeDelta: 0.25, longitudeDelta: 0.25)))

    _cameraPosition = State(initialValue: newCameraPosition)

  }

  var body: some View {