I have an app where a user takes a photo and he creates the annotation on the map with this photo, the photo has to be transferred to ImageAnnotation class and than a pin must be created on the map
import UIKit
import MapKit
import CoreLocation
import Firebase
class MapViewController: UIViewController, CLLocationManagerDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
@IBOutlet weak var MapButton: UITabBarItem!
@IBOutlet weak var mapView: MKMapView!
let locationManager = CLLocationManager()
var currentLocation: CLLocation!
let regionInMeters: Double = 10000
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.isNavigationBarHidden = true
let db = Firestore.firestore()
db.collection("locations").getDocuments() { [self] (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
for document in querySnapshot!.documents {
if let coords = document.get("pinLocation") {
let point = coords as! GeoPoint
let lat = point.latitude
let lon = point.longitude
let annotation = MKPointAnnotation()
annotation.coordinate = CLLocationCoordinate2D(latitude: lat, longitude: lon)
mapView.addAnnotation(annotation)
}
}
}
}
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
navigationController?.isNavigationBarHidden = false
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
checkLocationServices()
locationManager.delegate = self
}
func setupLocationManager() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
}
func centerViewOnUserLocation() {
if let location = locationManager.location?.coordinate {
let region = MKCoordinateRegion.init(center: location, latitudinalMeters: regionInMeters, longitudinalMeters: regionInMeters)
mapView.setRegion(region, animated: true)
}
}
func checkLocationServices() {
if CLLocationManager.locationServicesEnabled() {
setupLocationManager()
checkLocationAuthorization()
} else {
}
}
func checkLocationAuthorization() {
switch CLLocationManager.authorizationStatus() {
case .authorizedWhenInUse:
mapView.showsUserLocation = true
centerViewOnUserLocation()
locationManager.startUpdatingLocation()
break
case .denied:
break
case .notDetermined:
locationManager.requestWhenInUseAuthorization()
case .restricted:
break
case .authorizedAlways:
break
}
}
@IBAction func plusPressed(_ sender: UIButton) {
// guard let currLoc = locationManager.location else { return }
currentLocation = locationManager.location
let annotation = MKPointAnnotation()
annotation.coordinate = CLLocationCoordinate2D(latitude: currentLocation.coordinate.latitude, longitude: currentLocation.coordinate.longitude)
mapView.addAnnotation(annotation)
let picker = UIImagePickerController()
picker.sourceType = .camera
picker.delegate = self
present(picker, animated: true)
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation.isKind(of: MKUserLocation.self) { //Handle user location annotation..
return nil //Default is to let the system handle it.
}
if !annotation.isKind(of: ImageAnnotation.self) { //Handle non-ImageAnnotations..
var pinAnnotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "DefaultPinView")
if pinAnnotationView == nil {
pinAnnotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "DefaultPinView")
}
return pinAnnotationView
}
//Handle ImageAnnotations..
var view: ImageAnnotationView? = mapView.dequeueReusableAnnotationView(withIdentifier: "imageAnnotation") as? ImageAnnotationView
if view == nil {
view = ImageAnnotationView(annotation: annotation, reuseIdentifier: "imageAnnotation")
}
let annotation = annotation as! ImageAnnotation
view?.image = annotation.image
view?.annotation = annotation
return view
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
// guard let location = locations.last else { return }
// let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
// let region = MKCoordinateRegion.init(center: center, latitudinalMeters: regionInMeters, longitudinalMeters: regionInMeters)
// mapView.setRegion(region, animated: true)
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
checkLocationAuthorization()
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
guard let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else {
return
}
}
}
class ImageAnnotation : NSObject, MKAnnotation {
var coordinate: CLLocationCoordinate2D
var image: UIImage?
var color: UIColor?
override init() {
self.coordinate = CLLocationCoordinate2D()
self.image = ///// Here must go the image from imagePickerController
self.color = UIColor.systemGreen
}
}
class ImageAnnotationView: MKAnnotationView {
private var imageView: UIImageView!
override init(annotation: MKAnnotation?, reuseIdentifier: String?) {
super.init(annotation: annotation, reuseIdentifier: reuseIdentifier)
self.frame = CGRect(x: 0, y: 0, width: 20, height: 20)
self.imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
self.addSubview(self.imageView)
self.imageView.layer.cornerRadius = 25
self.imageView.layer.masksToBounds = true
}
override var image: UIImage? {
get {
return self.imageView.image
}
set {
self.imageView.image = newValue
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
