ios - Swift:MapKit - 识别 Pin Tap

Question

我一定是遗漏了一些明显的东西......

作品:从 Core Data 添加一堆 MKPointAnnotations...显示在 map 上

不起作用:尝试在点击 pin 时显示打印语句。

我设置了 MKMapView Delegate 并且没有实现 AnnotationView，因为我希望在点击 pin 后立即进行 segue。宁愿不显示上下文对话框。

我错过了什么来识别 pin 被点击了？

import UIKit
import MapKit
import Foundation
import CoreData

class MapViewController: UIViewController, MKMapViewDelegate {    
    @IBOutlet weak var mapOutlet: MKMapView!

    var latitude = 100.0 as Double
    var longitude = 120.0 as Double

    var pins = [NSManagedObject]()

    func pullPins()    {
        let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
        let managedContext = appDelegate.managedObjectContext

        let fetchRequest = NSFetchRequest(entityName: "Pin")

        do {
            let results = try managedContext.executeFetchRequest(fetchRequest)
            pins = results as! [NSManagedObject]

            for pin in pins {
                let pinLat = pin.valueForKey("latitude") as! Double
                let pinLon = pin.valueForKey("longitude") as! Double

                let pinCoordinate = CLLocationCoordinate2D(latitude: pinLat, longitude: pinLon)

                let annotation = MKPointAnnotation()
                annotation.coordinate = pinCoordinate

                self.mapOutlet.addAnnotation(annotation)
            }
        }
        catch let error as NSError {
            print("Could not fetch \(error), \(error.userInfo)")
        }
    }


    func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
        print("Pin Tapped")
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        pullPins()
    }
}

Answer 1

如果您没有收到 map View 委托(delegate)消息，那是因为您还没有让自己成为 map View 的委托(delegate)。例如:

self.mapOutlet.delegate = self