How to implement a SearchBar inside a Map - swift

Question

In the app that I'm building I was able to implement succesfully a map.
The problem is that when I try to implement a bar with the SearchButton the app crashes and the output says: "Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key searchButton.'"
Here is the MapViewController file.
Thanks for the help...
import UIKit
import MapKit
class MapViewController: UIViewController, UISearchBarDelegate {
#IBOutlet weak var mapView: MKMapView!
override func viewDidLoad() {
super.viewDidLoad()
mapView.userTrackingMode = .follow
let annotations = LocationsStorage.shared.locations.map { annotationForLocation($0) }
mapView.addAnnotations(annotations)
NotificationCenter.default.addObserver(self, selector: #selector(newLocationAdded(_:)), name: .newLocationSaved, object: nil)
}
#IBAction func addItemPressed(_ sender: Any) {
guard let currentLocation = mapView.userLocation.location else {
return
}
LocationsStorage.shared.saveCLLocationToDisk(currentLocation)
}
func annotationForLocation(_ location: Location) -> MKAnnotation {
let annotation = MKPointAnnotation()
annotation.title = location.dateString
annotation.coordinate = location.coordinates
return annotation
}
#IBAction func searchButton(_ sender: Any)
{
let searchController = UISearchController(searchResultsController: nil)
searchController.searchBar.delegate = self
present(searchController, animated: true, completion: nil)
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar)
{
//Ignoring user
UIApplication.shared.beginIgnoringInteractionEvents()
//Activity Indicator
let activityIndicator = UIActivityIndicatorView()
activityIndicator.style = UIActivityIndicatorView.Style.gray
activityIndicator.center = self.view.center
activityIndicator.hidesWhenStopped = true
activityIndicator.startAnimating()
self.view.addSubview(activityIndicator)
//Hide search bar
searchBar.resignFirstResponder()
dismiss(animated: true, completion: nil)
//Create the search request
let searchRequest = MKLocalSearch.Request()
searchRequest.naturalLanguageQuery = searchBar.text
let activeSearch = MKLocalSearch(request: searchRequest)
activeSearch.start { (response, error) in
activityIndicator.stopAnimating()
UIApplication.shared.endIgnoringInteractionEvents()
if response == nil
{
print("ERROR")
}
else
{
//Remove annotations
let annotations = self.mapView.annotations
self.mapView.removeAnnotations(annotations)
//Getting data
let latitude = response?.boundingRegion.center.latitude
let longitude = response?.boundingRegion.center.longitude
//Create annotation
let annotation = MKPointAnnotation()
annotation.title = searchBar.text
annotation.coordinate = CLLocationCoordinate2DMake(latitude!, longitude!)
self.mapView.addAnnotation(annotation)
//Zooming in on annotation
let coordinate:CLLocationCoordinate2D = CLLocationCoordinate2DMake(latitude!, longitude!)
let span = MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1)
let region = MKCoordinateRegion(center: coordinate, span: span)
self.mapView.setRegion(region, animated: true)
}
}
}
#objc func newLocationAdded(_ notification: Notification) {
guard let location = notification.userInfo?["location"] as? Location else {
return
}
let annotation = annotationForLocation(location)
mapView.addAnnotation(annotation)
}
}

Answer 1

you have your output disconnected, check out your storyboard and check that your button it's linked to its corresponding outlets and events.
In the connections inspector you should be able to see the outlets of the button if it's a bar button item.