[SOLVED] What is the best way to find longitude and latitude at the last screen touch of the user?

What is the best way to find longitude and latitude at the last screen touch of the user?

I develop an android app with the use of ArcGIS map and what im trying to do is to get the lat and long of the last screen touch. I searched for information in the Esri forum and found a solution that advises to use it:

   fun getLocation() {
    var viewPoint= mapView.getCurrentViewpoint(Viewpoint.Type.CENTER_AND_SCALE)
    var scale=viewPoint.targetScale
    //var long=??
    //var lat=??

}

but i found only the sacle(zoom in or out) at the last touch of the user and i want also the latitude and longtitude of it.

how do i get them from the viewpoint class or maybe from the mapview class

Thanks for any help.

Solution

The viewpoint returned by GetCurrentViewpoint uses the mapView's SpatialReference (probably EPSG:3857 in your case).

Not sure about kotlin but here is how I converted it using ArcGIS .net SDK:

var viewPoint = mapView.GetCurrentViewpoint(ViewpointType.CenterAndScale);
var latlon = (MapPoint)GeometryEngine.Project(viewPoint.TargetGeometry, SpatialReferences.Wgs84);
var lat = latlon.Y;
var lon = latlon.X;