ios - 将搜索栏和位置按钮添加到 MapKit 视图控制器

Question

这可能是一个简单的解决方案，但我已经尝试了它看起来的一切。在我的登录窗口之后，我似乎无法向我的 MapKit 视图控制器添加搜索框和按钮。我以编程方式而不是从情节提要添加了我的 MapKit，并且似乎无法在其上添加任何叠加层。这是我之前尝试添加的代码，UIButton但UITextField它似乎没有出现，所以我已将其删除。

我试图让用户输入一个地址，他们将从当前位置获取步行路线，其中包含路线多边形叠加层以及用于查找当前位置的按钮，例如在普通地图应用程序的底角。

import MapKit
import CoreLocation

class mapViewController: UIViewController, CLLocationManagerDelegate {

    let mapView = MKMapView()
    let locationManager = CLLocationManager()
    
    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]) {
        guard let location = locations.last else { return }
        let region = MKCoordinateRegion.init(center: location.coordinate, latitudinalMeters: 4000, longitudinalMeters: 4000)
        mapView.setRegion(region, animated: true)
    }
   
    func checkLocationAuthorization() {
        switch CLLocationManager.authorizationStatus() {
        case .authorizedWhenInUse:
            mapView.showsUserLocation = true
            followUserLocation()
            locationManager.startUpdatingLocation()
            break
        case .denied:
            // Show alert
            break
        case .notDetermined:
            locationManager.requestWhenInUseAuthorization()
        case .restricted:
            // Show alert
            break
        case .authorizedAlways:
            break
        }
    }
    
    func checkLocationServices() {
        if CLLocationManager.locationServicesEnabled() {
            setupLocationManager()
            checkLocationAuthorization()
        } else {
            // the user didn't 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) {
        checkLocationAuthorization()
    }
    
    func setupLocationManager() {
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
    }
}

编辑：我设法添加了一个 UISearchController：

let searchController: UISearchController = {
let sc = UISearchController()
sc.obscuresBackgroundDuringPresentation = false
sc.searchBar.placeholder = NSLocalizedString("Search Directions", comment: "")
sc.searchBar.barTintColor = .systemPink
return sc
         
}()

标签： iosswiftxcodeuikitmapkit