MKMapView clustering if too many Map Pins nearby

Question

I'm wondering if any of you knows a method (library, category, etc.) to cluster iOS MapAnnotations if there are many of them at the same location (e.g. 4 pieces in about 10m).

It doesn't matter to zoom in because they are still overlapping. I've already tried https://github.com/applidium/ADClusterMapView (and sombe other libs) but all of them are made for showing clusters in zoom-out-scenarios. None of them really respect the distance between annotations when zoomed in.

I'm working on an app with an offline-db so a server-side solution is not an option.

thank you for your help!

Answer 1

You don't need 3rd party framework's anymore. iOS 11 has native clustering support.

You need to implement mapView:clusterAnnotationForMemberAnnotations: method.

Get more details in the Apple example: https://developer.apple.com/sample-code/wwdc/2017/MapKit-Sample.zip

Answer 2

You should have a look into CCHMapClusterController project, looks exactly like something you are looking for.