所以我在MapView中设置了MKAnnotations，它正如我想要的那样工作。现在我想进一步尝试并尝试更改引脚的颜色，这将是在以下代码中实现此功能的最有效方法：
override func viewDidAppear(animated: Bool) {
var annotationQuery = PFQuery(className: "Post")
currentLoc = PFGeoPoint(location: MapViewLocationManager.location)
//annotationQuery.whereKey("Location", nearGeoPoint: currentLoc, withinMiles: 10)
annotationQuery.whereKeyExists("Location")
annotationQuery.findObjectsInBackgroundWithBlock {
(points, error) -> Void in
if error == nil {
// The find succeeded.
println("Successful query for annotations")
// Do something with the found objects
let myPosts = points as! [PFObject]
for post in myPosts {
let point = post["Location"] as! PFGeoPoint
let annotation = MKPointAnnotation()
annotation.coordinate = CLLocationCoordinate2DMake(point.latitude, point.longitude)
annotation.title = post["title"] as! String!
annotation.subtitle = post["username"] as! String!
func mapView(aMapView: MKMapView!,
viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
let reuseId = "pin"
var pinView = aMapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView
println("Pinview was nil")
pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
pinView!.canShowCallout = true
pinView!.animatesDrop = true
pinView!.pinColor = .Green
return pinView
}
self.mapView.addAnnotation(annotation)
}
} else {
// Log details of the failure
println("Error: \(error)")
}
}
我似乎无法自己解决这个问题，尽管看起来很简单。我也对viewForAnnotation方法感到困惑，从我可以收集的方法来看，似乎我需要使用它，但我正在尝试的任何工作都没有。