Search for places/ locations using MapKit and Search Bar (SwiftUI, Xcode 12.4) - xcode

Question

I have a question about how one can connect a Search Bar with MapKit, so that it is able to search for places/ locations (not using StoryBoard). I have already written the code for the Search Bar and for the MapView in separate files, but even after trying literally every code and tutorial on the internet, I couldn't find a way to connect the Search Bar to search for locations. Below one can see respectively the used SearchBar.swift file, the MapViewController.swift and a snippet of the ContentView.swift.
SearchBar.swift
import UIKit
import Foundation
import SwiftUI
import MapKit
struct SearchBar: UIViewRepresentable {
// Binding: A property wrapper type that can read and write a value owned by a source of truth.
#Binding var text: String
// NSObject: The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects.
// UISearchBarDelegate: A collection of optional methods that you implement to make a search bar control functional.
class Coordinator: NSObject, UISearchBarDelegate {
#Binding var text: String
let Map = MapViewController()
init(text: Binding<String>) {
_text = text
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
text = searchText
}
func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
text = ""
searchBar.showsCancelButton = true
searchBar.endEditing(true)
searchBar.resignFirstResponder()
}
}
func makeCoordinator() -> SearchBar.Coordinator {
return Coordinator(text: $text)
}
func makeUIView(context: UIViewRepresentableContext<SearchBar>) -> UISearchBar {
let searchBar = UISearchBar(frame: .zero)
searchBar.delegate = context.coordinator
searchBar.showsCancelButton = true
searchBar.searchBarStyle = .minimal
//searchBar.backgroundColor = .opaqueSeparator
searchBar.showsCancelButton = true
return searchBar
}
func updateUIView(_ uiView: UIViewType, context: Context) {
uiView.text = text
}
}
MapViewController.swift
class MapViewController: UIViewController, CLLocationManagerDelegate {
let mapView = MKMapView()
let locationManager = CLLocationManager()
#Published var permissionDenied = false
override func viewDidLoad() {
super.viewDidLoad()
setupMapView()
checkLocationServices()
}
func setupMapView() {
view.addSubview(mapView)
mapView.translatesAutoresizingMaskIntoConstraints = false
mapView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
mapView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
mapView.rightAnchor.constraint(equalTo: view.safeAreaLayoutGuide.rightAnchor).isActive = true
mapView.leftAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leftAnchor).isActive = true
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let span = MKCoordinateSpan(latitudeDelta: 0.005, longitudeDelta: 0.005)
guard let location = locations.last else { return }
let region = MKCoordinateRegion(center: location.coordinate, span: span)
mapView.setRegion(region, animated: true)
let categories:[MKPointOfInterestCategory] = [.cafe, .restaurant]
let filters = MKPointOfInterestFilter(including: categories)
mapView.pointOfInterestFilter = .some(filters)
// Enables the scrolling around the user location without hopping back
locationManager.stopUpdatingLocation()
}
func checkLocalAuthorization() {
switch CLLocationManager.authorizationStatus() {
case .authorizedWhenInUse:
mapView.showsUserLocation = true
followUserLocation()
locationManager.startUpdatingLocation()
break
case .denied:
permissionDenied.toggle()
break
case .notDetermined:
locationManager.requestWhenInUseAuthorization()
case .restricted:
// Show alert
break
case .authorizedAlways:
break
#unknown default:
fatalError()
}
}
func checkLocationServices() {
if CLLocationManager.locationServicesEnabled() {
setupLocationManager()
checkLocalAuthorization()
} else {
// user did not turn it on
}
}
func followUserLocation() {
if let location = locationManager.location?.coordinate {
let region = MKCoordinateRegion.init(center: location, latitudinalMeters: 4000, longitudinalMeters: 4000)
mapView.setRegion(region, animated: true)
}
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
checkLocalAuthorization()
}
func setupLocationManager() {
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
}
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
print(error.localizedDescription)
}
}
The methods are then called in the ContentView.swift, using these methods:
struct MapViewRepresentable: UIViewControllerRepresentable {
func makeUIViewController(context: Context) -> some UIViewController {
return MapViewController()
}
func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
}
}
struct ContentView: View {
#State private var searchText : String = ""
var body: some View {
ZStack(alignment: .top) {
MapViewRepresentable()
.edgesIgnoringSafeArea(.all)
.onTapGesture {
self.endTextEditing()
}
SearchBar(text: $searchText)
}
}
}
Is it possible to connect both like I explained, or is there another method you advice? I really hope you guys can help me! Thanks in advance :)