我正在尝试添加一个按钮然后执行新的viewcontroller到我的MKPointAnnotations
我仔细研究了这两个问题
How to add button to MKPointAnnotation in Swift
How to add a button to the MKPointAnnotation?
他们都有
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation)
-> MKAnnotationView? {
作为解决方案的一部分,但是当我实现这个函数时,它没有被调用(我假设它的意思是自动调用,就像在tableviews中的单元格或swift中的集合视图一样)。一个洞察力是我接下来应该尝试的将是惊人的,因为总体而言我觉得这应该是容易的我缺少一些基本的东西。
import UIKit
import Foundation
import MapKit
import CoreLocation
class MapViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
var screenWidth : CGFloat = 0.0
var screenHeight : CGFloat = 0.0
var mapView = MKMapView()
var annotations : [MKPointAnnotation] = []
var annotationView = MKAnnotationView()
let lm = CLLocationManager()
let regionRadius: CLLocationDistance = 1000
var flag : Bool = false
override func viewDidLoad() {
super.viewDidLoad()
screenWidth = UIScreen.main.bounds.width
screenHeight = UIScreen.main.bounds.height
mapView.frame = CGRect(x: 0, y: 0, width: screenWidth, height: screenHeight)
self.view.addSubview(mapView)
lm.delegate = self
lm.desiredAccuracy = kCLLocationAccuracyBest
lm.requestWhenInUseAuthorization()
lm.startUpdatingLocation()
let detailButton: UIButton = UIButton(type: UIButtonType.detailDisclosure) as UIButton
annotationView.rightCalloutAccessoryView = detailButton
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let coordinateRegion = MKCoordinateRegionMakeWithDistance(locations[locations.count-1].coordinate, regionRadius * 0.5, regionRadius * 0.5)
mapView.setRegion(coordinateRegion, animated: true)
if flag == false {
addAnnotation(latitude: locations[locations.count-1].coordinate.latitude, longitude: locations[locations.count-1].coordinate.longitude)
flag = true
}
}
func addAnnotation(latitude: Double, longitude: Double){
let annotation = MKPointAnnotation()
annotation.coordinate.latitude = latitude
annotation.coordinate.longitude = longitude
annotation.title = "here"
annotations.append(annotation)
mapView.addAnnotation(annotations[0])
}
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
print("fuddddge not working")
let pinView = MKPinAnnotationView()
return pinView
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
答案 0 :(得分:0)
添加MKAnnotation
类型的注释时会调用此方法,因此您应首先创建MKAnnotation
// add them inside MKAnnotation class below import
func == (left: PinColor, right: PinColor) -> Bool
{
return left.rawValue == right.rawValue
}
enum PinColor : String
{
case Blue = "Blue"
case Red = "Red"
case Green = "Green"
case Purple = "Purple"
/* We convert our pin color to the system pin color */
func toPinColor() -> MKPinAnnotationColor
{
switch self
{
case .Red:
return .red
case .Green:
return .green
case .Purple:
return .purple
default:
return .red
}
}
}
class MyAnnotation: NSObject, MKAnnotation
{
var coordinate: CLLocationCoordinate2D = CLLocationCoordinate2DMake(0, 0)
var title: String!
var subtitle: String!
var pinColor: PinColor!
init(coordinate: CLLocationCoordinate2D, title: String,
subtitle: String,
pinColor: PinColor)
{
self.coordinate = coordinate
self.title = title
self.subtitle = subtitle
self.pinColor = pinColor
super.init()
}
}
然后添加annoation
let blueLocation = CLLocationCoordinate2D(latitude: ..... , longitude: .... )
let blueAnnotation = MyAnnotation(coordinate: blueLocation, title:"",subtitle: "",pinColor: .Green)
self.myMapView.addAnnotation(blueAnnotation)
//
func mapView(_ mapView: MKMapView,viewFor annotation: MKAnnotation) -> MKAnnotationView?
{
if annotation is MyAnnotation == false
{
return nil
}
let senderAnnotation = annotation as! MyAnnotation
let pinReusableIdentifier = senderAnnotation.pinColor.rawValue
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: pinReusableIdentifier)
if annotationView == nil
{
annotationView = MKAnnotationView(annotation: senderAnnotation, reuseIdentifier: pinReusableIdentifier)
annotationView!.canShowCallout = true
}
if senderAnnotation.pinColor == PinColor.Green
{
let pinImage = UIImage(named:"name.png")
annotationView!.image = pinImage
}
return annotationView
}