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
    }
}

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