How to customize default pin marker using Google Cluster Manager? - ios

Question

How to customize default NOT CLUSTER, but red pin marker using Google Cluster Manager? There are some similar questions around but no working answer.
When I using:
func renderer(_ renderer: GMUClusterRenderer, willRenderMarker marker: GMSMarker) {
marker.icon = UIImage(named: "my_marker")
marker.setIconSize(scaledToSize: .init(width: 18, height: 24))
}
It customizes clusters and icons too. How to customize pin marker only not cluster marker?

Answer 1

marker has a property iconView which is a UIView. Since it's a UIView you can customize however you want.
func renderer(_ renderer: GMUClusterRenderer, willRenderMarker marker: GMSMarker) {
marker.iconView = MyView()
}

Answer 2

Works in Swift 5
class POIItem: NSObject, GMUClusterItem {
var position: CLLocationCoordinate2D
var name: String!
var icon: UIImage
init(position: CLLocationCoordinate2D, name: String, icon: UIImage) {
self.position = position
self.name = name
self.icon = icon
}
}
class PrincipalViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.google_map.clear()
let iconGenerator = GMUDefaultClusterIconGenerator()
let algorithm = GMUNonHierarchicalDistanceBasedAlgorithm()
let renderer = GMUDefaultClusterRenderer(mapView: self.google_map, clusterIconGenerator: iconGenerator)
renderer.delegate = self
self.clusterManager = GMUClusterManager(map: self.google_map, algorithm: algorithm, renderer: renderer)
self.clusterManager.setDelegate(self, mapDelegate: self)
//insert your markers type POIItem
//self.clusterManager.add(item)
self.clusterManager.cluster()
}
}
extension PrincipalViewController: GMUClusterRendererDelegate {
func renderer(_ renderer: GMUClusterRenderer, willRenderMarker marker: GMSMarker) {
if marker.userData is POIItem {
if let item = marker.userData as? POIItem {
marker.icon = item.icon
marker.title = item.name
}
}
if marker.userData is GMUStaticCluster {
if let staticCluster = marker.userData as? GMUStaticCluster {
//this is a custom UIView (.xib) contain a UIImage with custom marker and one label (countLabel) where show number of grouped markers
let customClusterMarker:CustomClusterMarker = CustomClusterMarker()
customClusterMarker.countLabel.text = "\(staticCluster.count)"
let view = UIView(frame: CGRect(x: 0, y: 0, width: 52, height: 70))
view.addSubview(customClusterMarker)
marker.iconView = view
}
}
}
}
extension PrincipalViewController: GMUClusterManagerDelegate {
func clusterManager(_ clusterManager: GMUClusterManager, didTap clusterItem: GMUClusterItem) -> Bool {
print("didTap clusterItem")
return true
}
func clusterManager(_ clusterManager: GMUClusterManager, didTap cluster: GMUCluster) -> Bool {
print("didTap cluster")
return true
}
}