默认手势事件不在谷歌地图工作

Question

我想在长按新增标记，但我的didLongPressAt坐标事件不起作用。我用它的打印语句进行测试。 我已经在其中添加了UIView。我也使用内置手势，但仍然无法工作。 这是我的代码。请帮助我。

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) 
} 

Answer 1

这里的问题是，你这样做，你在这里创建未设置为自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) 新GMSMapView中实例的代表再次初始化的MapView。因此代理方法（didLongPressAt）未被调用。

取而代之的是，如果您只是想在当前位置有机会时重新定位相机，请使用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 
}