Passing an object to custom view in Google maps SDK - ios

Question

I have custom view (a nib with its class) that I show when user taps on map marker. I also have an array of objects from where I'd like to show data of selected object when user taps on one of the markers. I create markers from the same array in a separate method. How to I get my element in array (to show additional data) when user taps the marker ? Or is there another way to get the object from array based on pressed marker. Apart from regexing based on lon and lat etc ?

Answer 1

I solved this by adding my model to
marker.userData
example:
func addMarkers(){
for place in places{
let marker = GMSMarker()
let placeLat = place.latitude
let placeLon = place.longitude
marker.position = CLLocationCoordinate2D(latitude: CLLocationDegrees(placeLat), longitude: CLLocationDegrees(placeLon))
marker.appearAnimation = .pop
marker.map = mpView
marker.userData = place
}
}
Then later I access it in:
func mapView(_ mapView: GMSMapView, markerInfoWindow marker: GMSMarker) -> UIView? {
let title = (marker.userData as! placeModel).name
let add = (marker.userData as! placeModel).address
let id = (marker.userData as! placeModel).id
let image = (marker.userData as! placeModel).image
let imageAddressInDocuments = ("\(getDocumentsDirectory())\(image)")
print("image address in documents %#", imageAddressInDocuments )
var infoWindow = Bundle.main.loadNibNamed("custView", owner: self, options: nil)?.first as! custView
infoWindow.titleLabel.text = title
infoWindow.addressLabel.text = add
infoWindow.restaurantImage.image = image != "" ? UIImage(contentsOfFile: imageAddressInDocuments) : UIImage(named: "addImage")
return infoWindow
}

Answer 2

GMSMapViewDelegate has the delegate function which lets you to return
your customView as info window.
optional public func mapView(_ mapView: GMSMapView, markerInfoWindow marker: GMSMarker) -> UIView?
You have to subclass GSMarker which takes your model in init.
class MapItem:GMSMarker {
var model: Model! //your data model
init(data: Model) {
super.init()
// pass cordinate
self.position = CLLocationCoordinate2D(latitude: data.latitude!, longitude: data.longitude!)
// pass Model
self.model = data
}
}
func mapView(_ mapView: GMSMapView, markerInfoWindow marker: GMSMarker) -> UIView? {
// Wrap GSMarker to your custom marker which is MapItem here
let customMarker = marker as! MapItem
// pass your model to CustomView(marker info window) in init
let customView = CustomView(markerModel: customMarker.model)
return customView
}