问题
On Swift 1.2 : I'd like to add a button to my annotations on the map. First tap on pin shows user's id, and this is working, but then, by pressing the button, I want to send the user to a detail view controller.
you can have an idea of what I'm looking for here and here
tried to apply those solutions, but I think I'm missing something. This is another example of what I'm seeking
this is my class declaration:
import UIKit
import MapKit
import CoreLocation
import Parse
class MapViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate, UIActionSheetDelegate {
and this is the part of the code where I'd like to create annotations with buttons:
// MARK: - Create Annotation
func createAnnotations(point: PFGeoPoint, address: String)
{
println("*** this evaluates n.3 ***")
var query = PFUser.query()
query?.whereKey("location", nearGeoPoint: point, withinKilometers: withinKms)
query?.orderByAscending("location") //MARK: Put list in order
//MARK: Not include current user on the map
var me = PFUser.currentUser()?.username
query?.whereKey("username", notEqualTo: me!)
query?.limit = self.kLimitNumberForQueryResults
query?.findObjectsInBackgroundWithBlock({ (objects, error) -> Void in
if error == nil
{
for(var i = 0; i < objects!.count; i++) {
let user = objects![i] as! PFUser
var myHomePin = MKPointAnnotation()
let userPoint = user["location"] as! PFGeoPoint
myHomePin.coordinate = CLLocationCoordinate2DMake(userPoint.latitude, userPoint.longitude)
myHomePin.title = user.username
//MARK: core of the problem
// let detailButton : UIButton = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as! UIButton
// myHomePin.rightCalloutAccessoryView = detailButton
//
// myHomePin.subtitle = address
self.mapView.addAnnotation(myHomePin)
// self.closeUsersArray.append(user.username!) //MARK: Test
}
// println("this is the array of users * \(self.closeUsersArray) *") //MARK: Test
}
else
{
println("Error: " + error!.localizedDescription)
}
})
}
thanks in advance!
回答1:
Use the 'viewForAnnotation' map view delegate method to setup left and rightcalloutAccessories. and also UIButton.buttonWithType is replaced, this will work: Edit: all delegate methods you need but I didn't though your createAnnotation function because you said its working fine
class MapViewController: UIViewController, MKMapViewDelegate //
{
@IBOutlet weak var mapView: MKMapView!{ //make sure this outlet is connected
didSet{
mapView.delegate = self
}
}
// MARK: - Map view delegate
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
var view = mapView.dequeueReusableAnnotationViewWithIdentifier("AnnotationView Id")
if view == nil{
view = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "AnnotationView Id")
view!.canShowCallout = true
} else {
view!.annotation = annotation
}
view?.leftCalloutAccessoryView = nil
view?.rightCalloutAccessoryView = UIButton(type: UIButtonType.DetailDisclosure)
//swift 1.2
//view?.rightCalloutAccessoryView = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as UIButton
return view
}
func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
//I don't know how to convert this if condition to swift 1.2 but you can remove it since you don't have any other button in the annotation view
if (control as? UIButton)?.buttonType == UIButtonType.DetailDisclosure {
mapView.deselectAnnotation(view.annotation, animated: false)
performSegueWithIdentifier("you're segue Id to detail vc", sender: view)
}
}
}
//Your function to load the annotations in viewDidLoad
}
来源：https://stackoverflow.com/questions/33123724/swift-adding-a-button-to-my-mkpointannotation