如何在 Swift 3 中的 mapview 上生成不同的图钉？
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【中文标题】如何在 Swift 3 中的 mapview 上生成不同的图钉？【英文标题】：How to generate different pins on mapview in Swift 3? 【发布时间】：2018-02-08 21:53:33 【问题描述】：我遇到了一个问题，我尝试生成不同的图标以显示在地点的地图视图上。但是，我需要你们的帮助。到目前为止，我已经硬编码了一个 pin 以显示在地图视图上。我的资产中也有不同的引脚，我想通过在地图视图上生成来显示它们。如何从 API 生成不同的图标以显示在我的地图视图上？谢谢您的帮助。
这是我的代码：
import UIKit
import MapKit
import CoreLocation
class MapViewController: BaseViewController
@IBOutlet weak var leadingConstraints: NSLayoutConstraint!
@IBOutlet weak var menuView: UIView!
@IBOutlet weak var mapView: MKMapView!
fileprivate let locationManager = CLLocationManager()
fileprivate var startedLoadingPOIs = false
fileprivate var places = [Place]()
fileprivate var arViewController: ARViewController!
@IBOutlet weak var activityIndicator: UIActivityIndicatorView!
var nearMeIndexSelected = NearMeIndexTitle()
var menuShowing = false
override func viewDidLoad()
super.viewDidLoad()
mapView.delegate = self
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
locationManager.startUpdatingLocation()
locationManager.requestWhenInUseAuthorization()
//making shadow of our menu view
menuView.layer.shadowOpacity = 1
menuView.layer.shadowRadius = 7
@IBAction func showARController(_ sender: Any)
arViewController = ARViewController()
arViewController.dataSource = self
arViewController.maxVisibleAnnotations = 30
arViewController.headingSmoothingFactor = 0.05
arViewController.setAnnotations(places)
self.navigationController!.pushViewController(arViewController, animated: true)
extension MapViewController: CLLocationManagerDelegate, MKMapViewDelegate
// // Changing the Pin Color on the map.
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
if annotation is MKUserLocation
mapView.tintColor = #colorLiteral(red: 0.8823529412, green: 0.1647058824, blue: 0.1333333333, alpha: 1)
return nil
else
let annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "pin")
let pin = mapView.view(for: annotation) ?? MKAnnotationView(annotation: annotation, reuseIdentifier: nil)
pin.image = UIImage(named: "pins")
return pin
return annotationView
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
if locations.count > 0
let location = locations.last!
print("Accuracy: \(location.horizontalAccuracy)")
if location.horizontalAccuracy < 100
manager.stopUpdatingLocation()
let span = MKCoordinateSpan(latitudeDelta: 0.013, longitudeDelta: 0.013)
let region = MKCoordinateRegion(center: location.coordinate, span: span)
mapView.region = region
if !startedLoadingPOIs
DispatchQueue.main.async
self.activityIndicator.startAnimating()
startedLoadingPOIs = true
let loader = PlacesLoader()
loader.loadPOIS(location: location, radius: 1500) placesDict, error in
if let dict = placesDict
guard let placesArray = dict.object(forKey: "results") as? [NSDictionary] else return
for placeDict in placesArray
let latitude = placeDict.value(forKeyPath: "geometry.location.lat") as! CLLocationDegrees
let longitude = placeDict.value(forKeyPath: "geometry.location.lng") as! CLLocationDegrees
let reference = placeDict.object(forKey: "reference") as! String
let name = placeDict.object(forKey: "name") as! String
let address = placeDict.object(forKey: "vicinity") as! String
let location = CLLocation(latitude: latitude, longitude: longitude)
let place = Place(location: location, reference: reference, name: name, address: address)
self.places.append(place)
let annotation = PlaceAnnotation(location: place.location!.coordinate, title: place.placeName)
DispatchQueue.main.async
self.mapView.addAnnotation(annotation)
DispatchQueue.main.async
self.activityIndicator.stopAnimating()
self.mapView.isHidden = false
【问题讨论】：
【参考方案1】：您可以比较注释的坐标并为该注释指定自定义引脚。
if annotation.coordinate == "Your Custom Pin Coordinate" //set custom pin
假设我想为我选择的地点添加一个自定义图钉。
var selectedPlace: PlaceAnnotation
在你的循环中。假设我选择的地方是“多伦多”
if name == "toronto" self.selectedPlace = annotation
然后在 ViewForAnnotation 方法中
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
if annotation.coordinate = selectedPlace.coordinate
pin.image = UIImage(named: "YOUR SELECTED IMAGE")
【讨论】：
您能否具体说明一下自定义引脚坐标的含义？ 假设我想为我选择的图像添加一个自定义图钉 从我的资产文件夹中生成并将其放在来自地点 API 的地图视图上【参考方案2】：在这里查看我的演示以创建自定义引脚视图customPinAnnotationButton
这里是用图片绘制注解的方法，我继承了MKAnoationView
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 = false
if senderAnnotation.pinColor == PinColor.Green
let pinImage = UIImage(named:"directMarker3.png")
annotationView!.image = pinImage
return annotationView
在这里添加注释
let blueLocation = CLLocationCoordinate2D(latitude:30.45454554, longitude: 29.646727)
let blueAnnotation = MyAnnotation(coordinate: blueLocation, title:"ghghhg",subtitle: "hgnhhghghg",pinColor: .Green ,uid:"hghg",type:"provider")
self.mymap.addAnnotation(blueAnnotation)
self.mymap.showAnnotations(self.mymap.annotations, animated: true)
【讨论】：
我得到了你的演示，但有点混乱。你能通过我上面的代码给我看一个sn-p吗？ 这不是显示一个硬编码图标吗？ 所以，如果我的资产文件夹中有不同的位置图标，我需要指定每个图标，就像您在添加注释时显示的那样？ 创建一个数组，然后向自定义类添加一个名为 index 的属性，在 viewForAnnoation 中访问它 ORRRR 创建一个全局 UIImage var 并在每个 addAnnoation 循环之前更改它 听起来不错。让我试试，如果我卡住了，我会告诉你的【参考方案3】：1.定义MKPointAnnotation的子类：
class MyPointAnnotation: MKPointAnnotation
var imageName: String = ""
2.设置图片名称。
let annotation = MyPointAnnotation()
annotation.coordinate = coordinate
annotation.title = "title"
annotation.subtitle = "subtitle"
annotation.imageName = "pin" // Set image name here
self.mapView.addAnnotation(annotation)
3.在viewFor委托方法中加载图片
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
if annotation is MKUserLocation
return nil
let reuseId = "image"
var pinView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId)
if pinView == nil
pinView = MKAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
pinView?.canShowCallout = true
let annotation = annotation as! MyPointAnnotation
pinView?.image = UIImage(named: annotation.imageName)
let rightButton: AnyObject! = UIButton(type: UIButtonType.detailDisclosure)
pinView?.rightCalloutAccessoryView = rightButton as? UIView
else
pinView?.annotation = annotation
return pinView
【讨论】：
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