Implementation of Google's native GMSAutocompleteViewController

GooglePlacePicker.swift

import UIKit
import GooglePlaces

//https://developers.google.com/places/ios-sdk/autocomplete

class GooglePlacePicker: NSObject {

    private var getPlaceInfo:((_ place: String?, _ coordinate: CLLocationCoordinate2D?, _ isSuccess: Bool) -> Void)?

    internal static let shared: GooglePlacePicker = {
        GooglePlacePicker()
    }()

    func showAutocompleteViewControllerForPlaces(onViewController vc: UIViewController, completion: @escaping(_ place: String?, _ coordinate: CLLocationCoordinate2D?, _ success: Bool) -> Void)
    {
        let autocompleteController = GMSAutocompleteViewController()
        autocompleteController.delegate = self

        if #available(iOS 13.0, *) {
            if UIScreen.main.traitCollection.userInterfaceStyle == .dark  {
                autocompleteController.primaryTextColor = UIColor.white
                autocompleteController.secondaryTextColor = UIColor.lightGray
                autocompleteController.tableCellSeparatorColor = UIColor.lightGray
                autocompleteController.tableCellBackgroundColor = UIColor.darkGray
            } else {
                autocompleteController.primaryTextColor = UIColor.black
                autocompleteController.secondaryTextColor = UIColor.lightGray
                autocompleteController.tableCellSeparatorColor = UIColor.lightGray
                autocompleteController.tableCellBackgroundColor = UIColor.white
            }
        }

        //--- Specify the place data types to return. ---//
        let fields: GMSPlaceField = GMSPlaceField(rawValue: UInt(GMSPlaceField.name.rawValue) | UInt(GMSPlaceField.formattedAddress.rawValue) | UInt(GMSPlaceField.coordinate.rawValue) |
          UInt(GMSPlaceField.placeID.rawValue))!
        autocompleteController.placeFields = fields

        //--- Specify a filter ---//
        let filter = GMSAutocompleteFilter()
        filter.type = .address
        autocompleteController.autocompleteFilter = filter

        self.getPlaceInfo = { place, coordinate, isSuccess in
            completion(place, coordinate, isSuccess)
        }

        //--- Display the autocomplete view controller. ---//
        vc.present(autocompleteController, animated: true, completion: nil)
    }
}

// MARK: Extension :: GMSAutocompleteViewControllerDelegate
extension GooglePlacePicker: GMSAutocompleteViewControllerDelegate {

  func viewController(_ viewController: GMSAutocompleteViewController, didAutocompleteWith place: GMSPlace)
  {
    print("GooglePlacePicker :: Place Id :: \(place.placeID ?? "")")
    print("GooglePlacePicker :: Place Name :: \(place.name ?? "")")
    print("GooglePlacePicker :: Place Address :: \(place.formattedAddress ?? "")")
    print("GooglePlacePicker :: Place Coordinate :: Latitude :: \(place.coordinate.latitude) And Longitude :: \(place.coordinate.longitude)")

    guard let address = place.formattedAddress  else {
        self.getPlaceInfo?(nil, nil, false)
        return
    }

    self.getPlaceInfo?(address, place.coordinate, true)

    viewController.dismiss(animated: true, completion: nil)
  }

  func viewController(_ viewController: GMSAutocompleteViewController, didFailAutocompleteWithError error: Error)
  {
    print("GooglePlacePicker :: Error :: ", error.localizedDescription)
    self.getPlaceInfo?(nil, nil, false)
  }

  func wasCancelled(_ viewController: GMSAutocompleteViewController)
  {
    self.getPlaceInfo?(nil, nil, false)
    viewController.dismiss(animated: true, completion: nil)
  }

  func didRequestAutocompletePredictions(_ viewController: GMSAutocompleteViewController) {
    //UIApplication.shared.isNetworkActivityIndicatorVisible = true
  }

  func didUpdateAutocompletePredictions(_ viewController: GMSAutocompleteViewController) {
    //UIApplication.shared.isNetworkActivityIndicatorVisible = false
  }

}

ViewController.swift

func selectLocation() {

        GooglePlacePicker.shared.showAutocompleteViewControllerForPlaces(onViewController: self) { (address, coordinate, isSuccess) in

            //guard let strongSelf = self else { return }

            if isSuccess && address != nil {
                print("Selected Address :: \(address!)")
            }
        }
    }