如何向MKPointAnnotation添加按钮？ [英] How to add a button to the MKPointAnnotation?

问题描述

我刚刚试图在我的注释点添加一个细节按钮，不幸的是我不知道该怎么做。有人可以帮我吗？

I've just got stuck trying to add a detail button to my annotation point, unfortunately I don't know how to do it. Does anyone could help me with that?

下图显示了我想要实现的目标。谢谢！

The image below presents what I'd like to achieve. Thanks!

MapKitViewController：

import UIKit
import MapKit
import CoreLocation

class MapKitViewController: UIViewController, MKMapViewDelegate
{

let locationManager = CLLocationManager()

@IBOutlet weak var nmapView: MKMapView!
override func viewDidLoad()
{
    super.viewDidLoad()
    locationManager.requestWhenInUseAuthorization()
    locationManager.startUpdatingLocation()
    let location = CLLocationCoordinate2D(
        latitude: 53.4265107,
        longitude: 14.5520357)

    let span = MKCoordinateSpanMake(0.05, 0.05)
    let region = MKCoordinateRegion(center: location, span: span)
    nmapView.setRegion(region, animated: true)
    nmapView.showsPointsOfInterest = false
    nmapView.showsUserLocation = true
    displayMarkers()
}

func displayMarkers() -> Void
{
    let jsonURL: NSURL = NSURL(string: "http://jsonstring.com/")!

    var dataFromNetwork: NSData = NSData(contentsOfURL: jsonURL)!
    let json = JSON(data: dataFromNetwork)
    var jsonSize = json.count

    var todaysDate:NSDate = NSDate()
    var dateFormatter:NSDateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd"
    var formattedDate:String = dateFormatter.stringFromDate(todaysDate)

    let annotationView = MKAnnotationView()
    let detailButton: UIButton = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as UIButton
    annotationView.rightCalloutAccessoryView = detailButton


    for(var i = 0; i < jsonSize; i++)
    {
        if(json[i]["rozpoczecie"].stringValue == formattedDate)
        {
            let clubID = json[i]["id_klub"].stringValue
            let annotation = MKPointAnnotation()
            let (resultSet, err) = SD.executeQuery("SELECT * FROM Clubs WHERE ID = ?", withArgs: [clubID])
            if(err != nil){println("blad")}
            else
            {
                for row in resultSet
                {
                    let name = row["Name"]?.asString()
                    let latitude = row["Latitude"]?.asDouble()
                    let longitude = row["Longitude"]?.asDouble()
                    annotation.title = name
                    var markerLatitude: Double = latitude!
                    var markerLongitude: Double = longitude!
                    let location = CLLocationCoordinate2D(latitude: markerLatitude, longitude: markerLongitude)
                    annotation.setCoordinate(location)
                    annotation.subtitle = json[i]["nazwa"].stringValue
                }
                nmapView.addAnnotation(annotation)
            }
        }
    }
}

推荐答案

你做得对。你只需要实现这些方法来添加按钮以及标题和副标题

You are doing it right.You just need to have these methods implemented for adding button along with title and subtitle

iOS 8和Xcode 6

 import UIKit
 import MapKit
 import CoreLocation

 class MapKitViewController: UIViewController, MKMapViewDelegate
 {
    let locationManager = CLLocationManager()
    @IBOutlet weak var nmapView: MKMapView!
    override func viewDidLoad()
    {
        super.viewDidLoad()
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
        let location = CLLocationCoordinate2D(
            latitude: 53.4265107,
            longitude: 14.5520357)

        let span = MKCoordinateSpanMake(0.05, 0.05)
        let region = MKCoordinateRegion(center: location, span: span)
        nmapView.setRegion(region, animated: true)
        nmapView.showsPointsOfInterest = false
        nmapView.showsUserLocation = true
        displayMarkers()
    }

    // When user taps on the disclosure button you can perform a segue to navigate to another view controller
    func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
        if control == view.rightCalloutAccessoryView{
            println(view.annotation.title) // annotation's title
            println(view.annotation.subtitle) // annotation's subttitle

            //Perform a segue here to navigate to another viewcontroller
            // On tapping the disclosure button you will get here
        }
    }

    // Here we add disclosure button inside annotation window
    func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {

        println("viewForannotation")
        if annotation is MKUserLocation {
            //return nil 
            return nil
        }

        let reuseId = "pin"
        var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView

        if pinView == nil {
            //println("Pinview was nil")
            pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
            pinView!.canShowCallout = true
            pinView!.animatesDrop = true
            }

        var button = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as UIButton // button with info sign in it

        pinView?.rightCalloutAccessoryView = button


        return pinView
    }


    func displayMarkers() -> Void
    {
        let jsonURL: NSURL = NSURL(string: "http://atnight.wtznc.com/json.php")!

        var dataFromNetwork: NSData = NSData(contentsOfURL: jsonURL)!
        let json = JSON(data: dataFromNetwork)
        var jsonSize = json.count

        var todaysDate:NSDate = NSDate()
        var dateFormatter:NSDateFormatter = NSDateFormatter()
        dateFormatter.dateFormat = "yyyy-MM-dd"
        var formattedDate:String = dateFormatter.stringFromDate(todaysDate)

        let annotationView = MKAnnotationView()

        // Adding button here wont do anything  so remove these two lines


        let detailButton: UIButton = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as UIButton
        annotationView.rightCalloutAccessoryView = detailButton

        // For adding button we have to use a method named as viewForAnnotation 

        for(var i = 0; i < jsonSize; i++)
        {
            if(json[i]["rozpoczecie"].stringValue == formattedDate)
            {
                let clubID = json[i]["id_klub"].stringValue
                let annotation = MKPointAnnotation()
                let (resultSet, err) = SD.executeQuery("SELECT * FROM Clubs WHERE ID = ?", withArgs: [clubID])
                if(err != nil){println("blad")}
                else
                {
                    for row in resultSet
                    {
                        let name = row["Name"]?.asString()
                        let latitude = row["Latitude"]?.asDouble()
                        let longitude = row["Longitude"]?.asDouble()
                        annotation.title = name
                        var markerLatitude: Double = latitude!
                        var markerLongitude: Double = longitude!
                        let location = CLLocationCoordinate2D(latitude: markerLatitude, longitude: markerLongitude)
                        annotation.setCoordinate(location)
                        annotation.subtitle = json[i]["nazwa"].stringValue
                    }
                    nmapView.addAnnotation(annotation)
                }
            }
        }
    }
}

查看我的输出。

这篇关于如何向MKPointAnnotation添加按钮？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！