我想在长按上添加标记,但是我的didLongPressAt坐标事件不起作用。我在其中使用了打印语句进行测试。
我已经在其中添加了UIView。我也使用内置手势,但仍然无法正常工作。
这是我的代码。请帮帮我。
var mapView=GMSMapView()
var camera = GMSCameraPosition()
let locationmanager = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
self.mapView.delegate=self
// Do any additional setup after loading the view.
self.locationmanager.delegate=self
self.locationmanager.desiredAccuracy=kCLLocationAccuracyNearestTenMeters
self.locationmanager.requestWhenInUseAuthorization()
self.locationmanager.startUpdatingLocation()
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
self.showCurrentLocationOnMap()
self.locationmanager.stopUpdatingLocation()
}
func showCurrentLocationOnMap()
{
camera = GMSCameraPosition.camera(withLatitude: (self.locationmanager.location?.coordinate.latitude)!, longitude: (self.locationmanager.location?.coordinate.longitude)!, zoom: 15)
mapView = GMSMapView.map(withFrame: CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(myView.frame.size.width), height: CGFloat(myView.frame.size.height)), camera: camera)
mapView.settings.myLocationButton=true
mapView.isMyLocationEnabled=true
let marker = GMSMarker()
marker.position=camera.target
marker.snippet="My Current Location"
marker.appearAnimation=GMSMarkerAnimation.pop
marker.map=mapView
myView.addSubview(mapView)
}
func mapView(_ mapView: GMSMapView, didLongPressAt coordinate: CLLocationCoordinate2D) {
print (coordinate.latitude)
print(coordinate.longitude)
}
最佳答案
这里的问题是您要通过执行mapView = GMSMapView.map(withFrame: CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(myView.frame.size.width), height: CGFloat(myView.frame.size.height)), camera: camera)
再次初始化mapView
您在此处创建的新GMSMapView实例的委托未设置为self。因此,不会调用委托方法(didLongPressAt
)。
相反,如果您只是想在当前位置有机会时重新定位相机,请改用mapView.animate(with cameraUpdate: GMSCameraUpdate)
。
override func viewDidLoad() {
super.viewDidLoad()
let camera = GMSCameraPosition.camera(withLatitude: (self.locationmanager.location?.coordinate.latitude)!, longitude: (self.locationmanager.location?.coordinate.longitude)!, zoom: 15)
mapView = GMSMapView.map(withFrame: CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(myView.frame.size.width), height: CGFloat(myView.frame.size.height)), camera: camera)
self.mapView.delegate=self
// Do any additional setup after loading the view.
self.locationmanager.delegate=self
self.locationmanager.desiredAccuracy=kCLLocationAccuracyNearestTenMeters
self.locationmanager.requestWhenInUseAuthorization()
self.locationmanager.startUpdatingLocation()
}
func showCurrentLocationOnMap()
{
let newLocation = CLLocationCoordinate2D(latitude: self.locationmanager.location?.coordinate.latitude, self.locationmanager.location?.coordinate.longitude: longitude)
let cameraPositionUpdate = GMSCameraUpdate.setTarget(newLocation)
self.mapView.animate(with: cameraPositionUpdate)
// Code to add the marker
}
关于ios - 默认手势事件在Google Map中不起作用,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/43558650/