topic about location problem in ArcGIS Runtime SDK for Android Questions

about location problem

lujun — Wed, 25 Jul 2012 09:17:05 GMT

i have encountered a problem

java code below

Graphic graphic = new Graphic(mMapView.toMapPoint(new Point(x,y))
      ,new SimpleMarkerSymbol(Color.RED,25,STYLE.CIRCLE));
    mGraphicsLayer.addGraphic(graphic);

in the code, parameter x and y are passed from Server side.I don't know why the graphic could not display on the map view

Re: about location problem

deleted-user-ATjHIWsdQYmT — Sat, 11 Dec 2021 13:50:41 GMT

i have encountered a problem

java code below
Graphic graphic = new Graphic(mMapView.toMapPoint(new Point(x,y))
                        ,new SimpleMarkerSymbol(Color.RED,25,STYLE.CIRCLE));
                mGraphicsLayer.addGraphic(graphic);
in the code, parameter x and y are passed from Server side.I don't know why the graphic could not display on the map view

mMapView.toMapPoint() converts screen coordinates to map coordinates. I imagine your x/y's are in real-world coords, not in screen coords, correct?

try removing mMapView.toMapPoint and just using:

Graphic graphic = new Graphic(new Point(x,y)
                        ,new SimpleMarkerSymbol(Color.RED,25,STYLE.CIRCLE));
                mGraphicsLayer.addGraphic(graphic);

Also, make sure your x/y points are in the same coordinate space as your map.

Re: about location problem

lujun — Sat, 11 Dec 2021 13:50:44 GMT

mMapView.toMapPoint() converts screen coordinates to map coordinates. I imagine your x/y's are in real-world coords, not in screen coords, correct?

try removing mMapView.toMapPoint and just using:
Graphic graphic = new Graphic(new Point(x,y)
                        ,new SimpleMarkerSymbol(Color.RED,25,STYLE.CIRCLE));
                mGraphicsLayer.addGraphic(graphic);
Also, make sure your x/y points are in the same coordinate space as your map.

yeah,that's the key ,thanks

i am new ,thanks for figuring the method toMapPoint out