MKLocalSearchCompleter results in SwiftUI using Combine. More explanation: https://www.mozzafiller.com/posts/mklocalsearchcompleter-swiftui-combine

LocationSearchService.swift

import Foundation
import SwiftUI
import MapKit
import Combine

class LocationSearchService: NSObject, ObservableObject, MKLocalSearchCompleterDelegate {
    @Published var searchQuery = ""
    var completer: MKLocalSearchCompleter
    @Published var completions: [MKLocalSearchCompletion] = []
    var cancellable: AnyCancellable?
    
    override init() {
        completer = MKLocalSearchCompleter()
        super.init()
        cancellable = $searchQuery.assign(to: \.queryFragment, on: self.completer)
        completer.delegate = self
    }
    
    func completerDidUpdateResults(_ completer: MKLocalSearchCompleter) {
        self.completions = completer.results
    }
}

extension MKLocalSearchCompletion: Identifiable {}

MKLocalSearchCompleterExampleView.swift

import SwiftUI

struct MKLocalSearchCompleterExampleView: View {
    @ObservedObject var locationSearchService: LocationSearchService
    var body: some View {
        NavigationView {
            VStack {
                SearchBar(text: $locationSearchService.searchQuery)
                List(locationSearchService.completions) { completion in
                    VStack(alignment: .leading) {
                        Text(completion.title)
                        Text(completion.subtitle)
                            .font(.subheadline)
                            .foregroundColor(.gray)
                    }
                }.navigationBarTitle(Text("Search near me"))
            }
        }
    }
}

SceneDelegate.swift

// Create the SwiftUI view that provides the window contents.
let locationSearchService = LocationSearchService()
let contentView = MKLocalSearchCompleterExampleView(locationSearchService: locationSearchService)

SearchBar.swift

import SwiftUI

struct SearchBar: UIViewRepresentable {

    @Binding var text: String

    class Coordinator: NSObject, UISearchBarDelegate {
        
        @Binding var text: String
        
        init(text: Binding<String>) {
            _text = text
        }

        func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
            text = searchText
        }
    }

    func makeCoordinator() -> SearchBar.Coordinator {
        return Coordinator(text: $text)
    }

    func makeUIView(context: UIViewRepresentableContext<SearchBar>) -> UISearchBar {
        let searchBar = UISearchBar(frame: .zero)
        searchBar.delegate = context.coordinator
        searchBar.searchBarStyle = .minimal
        return searchBar
    }

    func updateUIView(_ uiView: UISearchBar, context: UIViewRepresentableContext<SearchBar>) {
        uiView.text = text
    }
}

For more explanation on how this works, see this post: https://www.mozzafiller.com/posts/mklocalsearchcompleter-swiftui-combine

Result

Wow, the only usable and easily comprehensive solution out there... thank you for this contribution

how to get the address + coordinate?

Hi @saroar – the .subtitle property on the MKLocalSearchCompletion objects is usually the address of the result. But to get more details (e.g. coordinates) you need to convert the completion object into an MKLocalSearch. See this StackOverflow answer: How to extract country and city from MKLocalSearchCompletion?

Whenever I show the search bar in a view, it clears within a couple seconds and the search breaks, any ideas?

I also get a bunch of errors:

2022-02-12 19:45:59.095462-0800 Pickt[64199:2417526] [SearchAttribution] No matching attribution source found for com.timeout
2022-02-12 19:45:59.095595-0800 Pickt[64199:2417526] [SearchAttribution] No matching attribution source found for com.theculturetrip
2022-02-12 19:45:59.095822-0800 Pickt[64199:2417526] [SearchAttribution] No matching attribution source found for com.redtri
2022-02-12 19:45:59.095909-0800 Pickt[64199:2417526] [SearchAttribution] No matching attribution source found for com.fotospot
2022-02-12 19:45:59.096549-0800 Pickt[64199:2417526] [SearchAttribution] Error loading attribution info for identifier com.timeout from geod: Error Domain=GEOErrorDomain Code=-8 "No matching attribution source found for com.timeout" UserInfo={NSDebugDescription=No matching attribution source found for com.timeout}
2022-02-12 19:45:59.096679-0800 Pickt[64199:2417526] [SearchAttribution] Error loading attribution info for identifier com.theculturetrip from geod: Error Domain=GEOErrorDomain Code=-8 "No matching attribution source found for com.theculturetrip" UserInfo={NSDebugDescription=No matching attribution source found for com.theculturetrip}
2022-02-12 19:45:59.096761-0800 Pickt[64199:2417526] [SearchAttribution] Error loading attribution info for identifier com.redtri from geod: Error Domain=GEOErrorDomain Code=-8 "No matching attribution source found for com.redtri" UserInfo={NSDebugDescription=No matching attribution source found for com.redtri}
2022-02-12 19:45:59.096837-0800 Pickt[64199:2417526] [SearchAttribution] Error loading attribution info for identifier com.fotospot from geod: Error Domain=GEOErrorDomain Code=-8 "No matching attribution source found for com.fotospot" UserInfo={NSDebugDescription=No matching attribution source found for com.fotospot}

And more