Question

Using a MKMapView I have a pile of annoatations loaded onto it and I want to be able to filter the annotations displayed with a segmented control.

I’m using custom annotations with a type variable so I can tell them apart from one another but I haven’t been able to find a way to hide and display a subset of annotation views at will.

Answer 1

Sure, try this:

Objective-C solution:

[[yourMapView viewForAnnotation:yourAnnotation] setHidden:YES]

Swift 4 solution:

yourMapView.view(for: yourAnnotation)?.isHidden = true

This will return you the view associated with the specified annotation object, then you can set the view to hidden. Here is the documentation.