Question

我试图在谷歌地图中点击针脚时显示我的自定义视图。我在xib文件中疯了我的自定义视图并在func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool {的委托方法中调用该文件但是当我运行应用程序并点击标记时它不会显示我的视图。我怎么能显示这个？这是我自定义Xib文件的代码，

class MapMarkerWindow: UIView {

    @IBOutlet weak var saloonImage: UIImageView!
    @IBOutlet weak var nameLbl: UILabel!
    @IBOutlet weak var addressLbl: UILabel!
    @IBOutlet weak var descriptionLbl: UILabel!
    var spotData: NSDictionary?


    class func instanceFromNib() -> UIView {
        return UINib(nibName: "MapMarkerWindowView", bundle: nil).instantiate(withOwner: self, options: nil).first as! UIView     
    }
}

这是我VC中的代码，我正在显示我的地图

@IBOutlet weak var customView: UIView!

var mapView : GMSMapView?
var locationManager = CLLocationManager()
private var infoWindow = MapMarkerWindow()
fileprivate var locationMarker : GMSMarker? = GMSMarker()

override func viewDidLoad() {
    super.viewDidLoad()

    self.infoWindow = loadNiB()
    GMSServices.provideAPIKey("AIzaSyBMppjEPlRBHUD4To2KqNLgmhu1QcxHg3g")

    let camera = GMSCameraPosition.camera(withLatitude: 31.516331, longitude: 74.342792, zoom: 6)

    mapView = GMSMapView.map(withFrame: .zero, camera: camera)
    view = mapView

    let states = [
        State(name: "Hafeez Center", long: 74.342792, lat: 31.516331, snippets: "Lahore"),
        State(name: "Kalma Chowk", long: 74.331553, lat: 31.504532, snippets: "Lahore"),
        // the other 51 states here...
    ]

    for state in states {
        let state_marker = GMSMarker()
        state_marker.position = CLLocationCoordinate2D(latitude: state.lat, longitude: state.long)
        state_marker.title = state.name
        state_marker.snippet = "Hey, this is \(state.snippets)"
        state_marker.map = mapView
    }

    self.mapView?.isMyLocationEnabled = true

    //Location Manager code to fetch current location
    self.locationManager.delegate = self
    self.locationManager.startUpdatingLocation()
}

func loadNiB() -> MapMarkerWindow {
    let infoWindow = MapMarkerWindow.instanceFromNib() as! MapMarkerWindow
    return infoWindow
}

//Location Manager delegates
private func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

    let location = locations.last

    let camera = GMSCameraPosition.camera(withLatitude: (location?.coordinate.latitude)!, longitude: (location?.coordinate.longitude)!, zoom: 17.0)

    self.mapView?.animate(to: camera)

    //Finally stop updating location otherwise it will come again and again in this delegate
    self.locationManager.stopUpdatingLocation()

}
func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool {
    var markerData : NSDictionary?
    if let data = marker.userData! as? NSDictionary {
        markerData = data
    }
    locationMarker = marker
    infoWindow.removeFromSuperview()
    infoWindow = loadNiB()
    guard let location = locationMarker?.position else {
        print("locationMarker is nil")
        return false
    }
    // Pass the spot data to the info window, and set its delegate to self
    infoWindow.spotData = markerData
    //infoWindow.delegate = self
    // Configure UI properties of info window
    infoWindow.alpha = 0.9
    infoWindow.layer.cornerRadius = 12
    infoWindow.layer.borderWidth = 2
    //infoWindow.infoButton.layer.cornerRadius = infoWindow.infoButton.frame.height / 2
    let saloonImage = markerData!["image"]!
    let name = markerData!["name"]!
    let address = markerData!["address"]!
    let description = markerData!["description"]!

    infoWindow.addressLbl.text = address as? String
    infoWindow.nameLbl.text = name as? String
    infoWindow.descriptionLbl.text = description as? String
    infoWindow.saloonImage.image = saloonImage as? UIImage
    //Offset the info window to be directly above the tapped marker
    infoWindow.center = mapView.projection.point(for: location)
    infoWindow.center.y = infoWindow.center.y - 82
    self.view.addSubview(infoWindow)
    return false
}

func mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {
    if (locationMarker != nil){
        guard let location = locationMarker?.position else {
            print("locationMarker is nil")
            return
        }
        infoWindow.center = mapView.projection.point(for: location)
        infoWindow.center.y = infoWindow.center.y - 82
    }
}

func mapView(_ mapView: GMSMapView, didTapAt coordinate: CLLocationCoordinate2D) {
    infoWindow.removeFromSuperview()
}

当我点击它时，这就是我的图钉的样子。

Answer 1

在您的代码中，似乎加载Nib时出现问题。

请检查以下代码。

    func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool {
        self.tappedmarker = marker
        var point = mapView.projection.point(for: marker.position)
        point.y = point.y - 110
        let camera = mapView.projection.coordinate(for: point)
        let position = GMSCameraUpdate.setTarget(camera)
        mapView.animate(with: position)

        self.customMarker = CustomMarker.instancefromNib() as! CustomMarker
        customMarker.layer.cornerRadius = 10.0
        customMarker.clipsToBounds = true

        self.customMarker.center = mapView.projection.point(for: marker.position)
        self.customMarker.center.y = self.customMarker.center.y - 110
        self.view.addSubview(self.customMarker)
        self.customMarker.bringSubview(toFront: self.view)

        return true
    }

    func mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {
        if (tappedmarker != nil) {
            guard let location = tappedmarker?.position else {
                print("locationMarker is nil")
                return
            }
            customMarker.center = mapView.projection.point(for: location)
            customMarker.center.y = customMarker.center.y - 100
        }
    }

    func mapView(_ mapView: GMSMapView, didTapAt coordinate: CLLocationCoordinate2D) {
        if self.view.subviews .contains(self.customMarker) {
            self.customMarker.removeFromSuperview()
            return
        }
    }

这是instancefromNib：

   class CustomMarker: UIView {

    @IBOutlet weak var lblTitle: UILabel!

    class func instancefromNib() -> UIView {
        return UINib.init(nibName: "CustomMarker", bundle: nil).instantiate(withOwner: self, options: nil).first as! UIView
    }

}

这将如下所示：

希望这会有所帮助！

Answer 2

只需在viewDidLoad（）中设置mapView委托

self.mapView.delegate = self

谷歌地图中的自定义标记在swift中

2 个答案: