用户是否可以搜索地图以查看我在swift

Question

我正在创建一个应用程序，其中包含我已添加的引脚，单击此按钮可打开包含建筑物信息的警报。我想让用户搜索这些位置，但我不确定是否可能，因为我还没有找到任何代码。如果您知道如何操作或有任何建议，请通知我。

import UIKit
import MapKit
import CoreLocation

class CustomPointAnnotiation: MKPointAnnotation {
    var imageName: String!
}

class MapVC: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
    @IBOutlet weak var mapView: MKMapView!

    var manager = CLLocationManager()

    class Location: NSObject, MKAnnotation {
        var title: String?
        var coordinate: CLLocationCoordinate2D
        var info: String

        init(title: String, coordinate: CLLocationCoordinate2D, info: String) {
            self.title = title
            self.coordinate = coordinate
            self.info = info
                    }
    }

    func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
        // 1
        let identifier = "Location"

        // 2
        if annotation.isKindOfClass(Location.self) {
            // 3
            var image: UIImageView
            image = UIImageView(frame:CGRect(x: 50,y: 200,width: 250,height: 180))
            image.image = UIImage(named:"")
            self.view.addSubview(image)

            var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)

            if annotationView == nil {
                //4
                annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
                annotationView!.canShowCallout = true

                // 5
                let btn = UIButton(type: .DetailDisclosure)
                annotationView!.rightCalloutAccessoryView = btn
            } else {
                // 6
                annotationView!.annotation = annotation
            }
            return annotationView
        }

        // 7
        return nil
    }

    func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
        let location = view.annotation as! Location
        let placeName = location.title
        let placeInfo = location.info

        var imageView: UIImageView
        imageView = UIImageView(frame:CGRect(x: 50,y: 200,width: 250,height: 180))
        imageView.backgroundColor = UIColor.whiteColor()
        imageView.layer.cornerRadius = 8.0
        imageView.clipsToBounds = true

        if location.title == "Woodburn Hall" {
            imageView.image = UIImage(named:"woodburn.png")
            self.view.addSubview(imageView)
        }
        let ac = UIAlertController(title: placeName, message:placeInfo, preferredStyle:UIAlertControllerStyle.ActionSheet)
        ac.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))

       self.presentViewController(ac, animated: true, completion: nil)

       imageView.removeFromSuperview()
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        mapView.delegate = self

        // Core Location
        manager.delegate = self
        manager.desiredAccuracy = kCLLocationAccuracyBest
        manager.requestWhenInUseAuthorization()
        manager.startUpdatingLocation()

        //set initial location to Indiana University
        let initialLocation = CLLocation(latitude: 39.17, longitude: -86.5148)
        let regionRadius: CLLocationDistance = 100

        func centerMapOnLocation(location:CLLocation){
            let coordinateRegion =
            MKCoordinateRegionMakeWithDistance(location.coordinate, regionRadius * 2.0, regionRadius * 2.0)
            mapView.setRegion(coordinateRegion, animated: true)


            mapView.mapType = MKMapType.Hybrid;
        }

        centerMapOnLocation(initialLocation)

        let unionLocation = Location(title: "Memorial Union", coordinate: CLLocationCoordinate2D(latitude: 39.167541, longitude: -86.522387), info: "Address: 900 E 7th St, Bloomington, IN 47408 \n The student union on the campus. Was dedicated in June of 1932. As of date, it is the second largest student union, worldwide. Has multiple stages, offices, directors offices, and even a hotel in the building.")

        mapView.addAnnotation(unionLocation)

        let ashtonLocation = Location(title: "Ashton Residence Hall", coordinate:CLLocationCoordinate2D(latitude: 39.171550, longitude: -86.509768), info: "Address: 1800 E 10th St, Bloomington, IN 47408 \n Includes single dorms only and is located in central neighborhood.")

        mapView.addAnnotation(ashtonLocation)