我一直在尝试一切以获取注释来快速调用函数的方法。我不知道我做错了什么,但那根本行不通。 我曾尝试在真正的iPhone上测试我的项目,但也没有任何反应。
这是我的代码:
import UIKit
import MapKit
import Foundation
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
//Map
@IBOutlet weak var map: MKMapView!
let manager = CLLocationManager()
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
let location = locations[0]
let span:MKCoordinateSpan = MKCoordinateSpanMake(0.01, 0.01)
let myLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude)
let region:MKCoordinateRegion = MKCoordinateRegionMake(myLocation, span)
map.setRegion(region, animated: true)
let request = MKLocalSearchRequest()
request.naturalLanguageQuery = "coffee"
// Set the region to an associated map view's region
request.region = map.region
let search = MKLocalSearch(request: request)
search.start { response, error in
guard let response = response else {
print("There was an error searching for: \(String(describing: request.naturalLanguageQuery)) error: \(String(describing: error))")
return
}
for item in response.mapItems
{
print("URL=\(String(describing: item.url ?? nil))")
print("Name=\(String(describing: item.name ?? nil))")
print("Phone Number\(String(describing: item.phoneNumber ?? nil))")
let annotation = MKPointAnnotation()
annotation.coordinate = item.placemark.coordinate
annotation.title = item.name
self.map.addAnnotation(annotation)
}
}
self.map.showsUserLocation = true
}
override func viewDidLoad() {
super.viewDidLoad()
manager.delegate = self
manager.desiredAccuracy = kCLLocationAccuracyBest
manager.requestWhenInUseAuthorization()
manager.startUpdatingLocation()
}
func callThisFunction() {
print("The function has been called.")
}
func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
callThisFunction()
}
我看了很多有关如何执行此操作的文章,但我不太了解。谢谢,敬请谅解。
答案 0 :(得分:1)
添加
map.delegate = self
到您的viewDidLoad()
哦,Xcode告诉我
实例方法“ mapView(mapView:didSelectAnnotationView :)”几乎与协议“ MKMapViewDelegate”的可选要求“ mapView(_:didSelect :)”相匹配
您也应该使用“修复”按钮修复该问题。