Set a Pin if GeoFire find a Person in your region - swift

Question

i have got the Persons near my region in GeoFire. (Firebase)
Now I want to set for each Person a pin.
I wrote the whole code in the CL Location Manager function.
See the topic: Can't get near Users by my location with Firebase (GeoFire) and Swift
Now my idea was this:
var queryHandle = circleQuery.observe(.keyEntered, with: { (key: String!, location: CLLocation!) in
print("Key '\(key)' entered the search area and is at location '\(location)'")
let newPin = MKPointAnnotation()
newPin.coordinate = location.coordinate
self.MapView.addAnnotation(newPin)
}
For each User there should be a pin. I wrote this code, which is not working at all:
var queryHandle = circleQuery.observe(.keyEntered, with: { (key: String!, location: CLLocation!) in
let annotation = MKPointAnnotation()
let coord = CLLocationCoordinate2D()
annotation.coordinate = coord
annotation.title = userID
self.MapView.addAnnotation(annotation)
})

Answer 1

Try this
First, get the users location
let center = CLLocation(latitude: users_lat, longitude: users_long)
then define a radius around that center
var circleQuery = geoFire.query(at: center, withRadius: .60) //600 meters
Then to get all of the other users within that circle, perform a query
self.queryHandle = circleQuery.observe(.keyEntered, with: { (key: String?, location: CLLocation?) in
print("Key '\(key)' entered the search area and is at location '\(location)'")
})
Keeping in mind that Key entered events will be fired for all keys initially matching the query as well as any time afterwards that a key enters the query
Don't forget to define queryHandle as a class var.
Also, remember to point geoFire to your firebase when initting
let geofireRef = Database.database().reference()
let geoFire = GeoFire(firebaseRef: geofireRef)
To add pins to the map, just do this for each pin - just like the code in your question
let annotation = MKPointAnnotation()
let coord = CLLocationCoordinate2D(each users location)
annotation.coordinate = coord
annotation.title = "some user name"
mapView.addAnnotation(annotation)