I'm displaying Annotations on a SwiftUI.Map view and I'm seeing a strange behaviour that I'm not able to remedy.

When I tap on an Annotation, it get's selected and selectionId is se to whatever UUID the the selection has. While the selected item is still within the bounds of the Map (still visible) tapping anywhere on the Map causes the Annotation to be deselected (as expected). Performing the same action while the selected Annotation is out of Map bounds (not visible) does not result in deselection. I checked using Maps.app and deselection works both while selected markers are on/off screen.

Does anyone have any ideas why I'm unable to deselect?

Code:

struct TestMarker: Identifiable {
    let id: UUID
    let coordinate: CLLocationCoordinate2D
}
struct SomeView: View {
    @State var selectionId: UUID?
    var markers: [TestMarker]
    var body: some View {

        Map(selection: $selectionId) {
            ForEach(markers) { marker in
                Annotation(
                    "",
                    coordinate: marker.coordinate
                ) {
                    Text("\(marker.id)")
                }
            }
        }
    }
}

Moved Annotation out of visible map bounds and tapped on empty map area. Expected deselection, however that did not happen.

I'm displaying Annotations on a SwiftUI.Map view and I'm seeing a strange behaviour that I'm not able to remedy.

When I tap on an Annotation, it get's selected and selectionId is se to whatever UUID the the selection has. While the selected item is still within the bounds of the Map (still visible) tapping anywhere on the Map causes the Annotation to be deselected (as expected). Performing the same action while the selected Annotation is out of Map bounds (not visible) does not result in deselection. I checked using Maps.app and deselection works both while selected markers are on/off screen.

Does anyone have any ideas why I'm unable to deselect?

Code:

struct TestMarker: Identifiable {
    let id: UUID
    let coordinate: CLLocationCoordinate2D
}
struct SomeView: View {
    @State var selectionId: UUID?
    var markers: [TestMarker]
    var body: some View {

        Map(selection: $selectionId) {
            ForEach(markers) { marker in
                Annotation(
                    "",
                    coordinate: marker.coordinate
                ) {
                    Text("\(marker.id)")
                }
            }
        }
    }
}

Moved Annotation out of visible map bounds and tapped on empty map area. Expected deselection, however that did not happen.

• swift
• swiftui
• swiftui-map

1 Answer 1

The problem stemmed from a third-party clustering library, which removes markers that fall outside the visible map area, thereby preventing deselection from functioning correctly.