如何检测在MapView中选择了哪个注释 [英] How can I detect which annotation was selected in MapView
问题描述
我在地图中做了一些注释,当我点击它们时,我看到了一些信息,我有一个按钮打开地图,并且有正确的信息我不能接受它应该画我的路线。 / p>
这是我的代码:
我的lat和amp有2个双数组lon我从查询中填写了它们。
var lat = [Double]()
var lon = [Double ]()
这些行用于填写注释
self.annot = Islands(title:object [name] as!String,subtitle:object [address] as!String,coordinate:CLLocationCoordinate2D(纬度:(位置) ?.latitude)!,经度:(位置?.longitude)!),info:object [address] as!String)
self.map.addAnnotations([self.annot])
这是注释创建的地方:
func mapView(mapView:MKMapView,viewForAnnotation annotation:MKAnnotation) - > MKAnnotationView? {
let identifier =pin
if annotation.isKindOfClass(MKUserLocation){
return nil
}
let image = UIImage(命名为:car)
let button = UIButton(type:.Custom)
button.frame = CGRectMake(0,0,30,30)
button.setImage (image,forState:.Normal)
button.addTarget(self,action:#selector(Map.info(_ :)),forControlEvents:UIControlEvents.TouchUpInside)
var annotationView = mapView .dequeueReusableAnnotationViewWithIdentifier(identifier)
if annotationView == nil {
annotationView = MKAnnotationView(annotation:annotation,reuseIdentifier:pin)
annotationView!.canShowCallout = true
annotationView!。 image = UIImage(命名:annotation)
annotationView!.rightCalloutAccessoryView = button
}
else {
annotationView!.annotation = annotation
}
返回annotationView
}
最后这是按钮的功能,我应该传递正确的信息(以及问题出在哪里)是)
func info(发件人:UIButton)
{
let latitute:CLLocationDegrees = lat [sender.tag]
let longitute:CLLocationDegrees = lon [sender.tag]
let regionDistance:CLLocationDistance = 10000
let coordinates = CLLocationCoordinate2DMake(latitute,longitute)
let regionSpan = MKCoordinateRegionMakeWithDistance(coordinates,regionDistance,regionDistance)
let options = [
MKLaunchOptionsMapCenterKey:NSValue(MKCoordinate:regionSpan.center),
MKLaunchOptionsMapSpanKey:NSValue(MKCoordinateSpan:regionSpan.span )
]
let placemark = MKPlacemark(坐标:coordinates,addressDictionary:nil)
let mapItem = MKMapItem(地标:地标)
mapItem.name = na me [sender.tag]
print(sender.tag)
mapItem.openInMapsWithLaunchOptions(options)
}
如你所见,我尝试使用发件人标签,但没有运气。
编辑:我的自定义注释类
class Islands:NSObject,MKAnnotation {
var title:String?
var addr:String?
var坐标:CLLocationCoordinate2D
var info:String?
var subtitle:String?
init(title:String,subtitle:String,coordinate:CLLocationCoordinate2D,info:String){
self.title = title
self.coordinate = coordinate
self .info = info
self.subtitle =副标题
}
}
为此,您可以使用 didSelectAnnotationView中选定的
,然后将该注释存储到实例变量中,然后在注释
Button
操作方法中使用注释。
var selectedAnnotation:MKPointAnnotation?
func mapView(mapView:MKMapView,didSelectAnnotationView视图:MKAnnotationView){
self.selectedAnnotation = view.annotation as? MKPointAnnotation
}
func info(发件人:UIButton){
print(selectedAnnotation?.coordinate)
}
编辑:您需要使用自定义 MKAnnotation
类那个。
var selectedAnnotation:Islands?
func mapView(mapView:MKMapView,didSelectAnnotationView视图:MKAnnotationView){
self.selectedAnnotation = view.annotation as?群岛
}
I've made a few annotations inside the Map and when I tap on them I see some informations and I have a button that opens Maps and with the right information that I can't take it should draw me my route.
Here is my code:
I have 2 arrays of double for my lat & lon That I filled them from my query.
var lat = [Double]()
var lon = [Double]()
These lines are for filling annotations
self.annot = Islands(title: object["name"] as! String, subtitle: object["address"] as! String, coordinate: CLLocationCoordinate2D(latitude: (position?.latitude)!, longitude: (position?.longitude)!), info: object["address"] as! String)
self.map.addAnnotations([self.annot])
This is where the annotation is creating:
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "pin"
if annotation.isKindOfClass(MKUserLocation) {
return nil
}
let image = UIImage(named: "car")
let button = UIButton(type: .Custom)
button.frame = CGRectMake(0, 0, 30, 30)
button.setImage(image, forState: .Normal)
button.addTarget(self, action: #selector(Map.info(_:)), forControlEvents:UIControlEvents.TouchUpInside)
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)
if annotationView == nil {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView!.canShowCallout = true
annotationView!.image = UIImage(named: "annotation")
annotationView!.rightCalloutAccessoryView = button
}
else {
annotationView!.annotation = annotation
}
return annotationView
}
And finally this is the button's function where I should pass the right info ( and where the problem is)
func info(sender: UIButton)
{
let latitute:CLLocationDegrees = lat[sender.tag]
let longitute:CLLocationDegrees = lon[sender.tag]
let regionDistance:CLLocationDistance = 10000
let coordinates = CLLocationCoordinate2DMake(latitute, longitute)
let regionSpan = MKCoordinateRegionMakeWithDistance(coordinates, regionDistance, regionDistance)
let options = [
MKLaunchOptionsMapCenterKey: NSValue(MKCoordinate: regionSpan.center),
MKLaunchOptionsMapSpanKey: NSValue(MKCoordinateSpan: regionSpan.span)
]
let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil)
let mapItem = MKMapItem(placemark: placemark)
mapItem.name = name[sender.tag]
print(sender.tag)
mapItem.openInMapsWithLaunchOptions(options)
}
As you can see I tried with sender tag but with no luck.
EDIT: My Custom Annotation class
class Islands: NSObject, MKAnnotation {
var title: String?
var addr: String?
var coordinate: CLLocationCoordinate2D
var info: String?
var subtitle: String?
init(title: String, subtitle: String, coordinate: CLLocationCoordinate2D, info: String) {
self.title = title
self.coordinate = coordinate
self.info = info
self.subtitle = subtitle
}
}
For that you can use selected Annotation
from didSelectAnnotationView
, then store that annotation to instance variable and after that used annotation in your Button
action method.
var selectedAnnotation: MKPointAnnotation?
func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
self.selectedAnnotation = view.annotation as? MKPointAnnotation
}
func info(sender: UIButton) {
print(selectedAnnotation?.coordinate)
}
Edit: As of you have custom MKAnnotation
class you need to use that.
var selectedAnnotation: Islands?
func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
self.selectedAnnotation = view.annotation as? Islands
}
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