SwiftUI: How to fetch GeoPoint from Cloud Firestore and display it? - ios

Question

So I have this Cloud Firestore Setup, where each of the Image Documents have the same 4 fields, but with different values.
How can I then iterate over all of the Image Docs and get the GeoPint? So I later can display the Latitude and Longitude?
I Guess the iteration part isn’t THAT important, so antoher way of asking is, how can I get the Geopoint and then display it in my project?

Answer 1

Building on my last answer (https://stackoverflow.com/a/66377922/560942):
struct ImageModel {
var id = UUID()
var quote : String
var url: String
var position: GeoPoint
}
images = snapshot.documents.compactMap { documentSnapshot -> ImageModel? in
let documentData = documentSnapshot.data()
if let quote = documentData["Quote"] as? String,
let url = documentData["Url"] as? String,
let position = documentData["Position"] as? GeoPoint
{
return ImageModel(quote: quote, url: url, position: position)
} else {
return nil
}
}
Then, to display the text coordinates later on:
ForEach(images, id: \.id) { image in
Text("Location: \(image.position.latitude), \(image.position.longitude)")
}
Update for displaying the GeoPoint:
struct GeoPointView : View {
var position : GeoPoint
struct IdentifiablePoint: Identifiable {
var id = UUID()
var position : GeoPoint
}
var body: some View {
Map(coordinateRegion: .constant(
MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: position.latitude, longitude: position.longitude), span: MKCoordinateSpan(latitudeDelta: 0.005, longitudeDelta: 0.005))), annotationItems: [position].map { IdentifiablePoint(position: $0)}) { point in
MapPin(coordinate: CLLocationCoordinate2D(latitude: point.position.latitude, longitude: point.position.longitude))
}
.frame(width: 200, height: 200)
}
}
Usage:
ForEach(images, id: \.id) { image in
Text("Location: \(image.position.latitude), \(image.position.longitude)")
GeoPointView(position: image.position)
}
In the event you mean on a map, I can update this answer if needed, or you can refer to the following post on the Apple Developer Forums: https://developer.apple.com/forums/thread/651668