topic Adding a graphic on a spefisific location on the map in ArcGIS Runtime SDK for Android Questions

Adding a graphic on a spefisific location on the map

_lkerArg_n — Wed, 18 Jan 2012 07:36:45 GMT

Below is the part of the application code that I've written. When the application is run, the graphic is added on the map. Hovewer, it is not in the right location though the lattitude and longitude values are right. What could be the reason? I could not figure it out.

                
                someGraphicsLayer = new GraphicsLayer();
  map.addLayer(someGraphicsLayer);

  HashMap<String, Object> attrMap = new HashMap<String, Object>();
  attrMap.put("Title", "a graphic");

  double locx = 32.039821;
  double locy = 39.8858262;
  
                Point p = new Point(locx, locy);
  Point point = (Point) GeometryEngine.project(p, SpatialReference.create(4326), map.getSpatialReference());    

  Symbol symbol = someIcon;

  someGraphicsLayer.addGraphic(new Graphic(point, symbol, attrMap, null));

Re: Adding a graphic on a spefisific location on the map

IvanBespalov — Wed, 18 Jan 2012 07:55:47 GMT

mggl (sorry your name is not readable "?lker"),

seems like you need to refresh graphics layer, after graphics is added:

graphicsLayer.postInvalidate();

How Android Draws

postInvalidate()

Re: Adding a graphic on a spefisific location on the map

_lkerArg_n — Wed, 18 Jan 2012 10:13:39 GMT

mggl (sorry your name is not readable "?lker"),

seems like you need to refresh graphics layer, after graphics is added:
graphicsLayer.postInvalidate();
How Android Draws

postInvalidate()

Graphic is already seen on the map, but in the wrong place. The graphic is always seen at position ( lattitude = 0, longitude = 0) It turned out that the problem was map is not loaded. Thus, I added and asynchronus task which loops until the map is loaded and then adds the graphic later.

Anyway, thanks for the answer, I should add that line of code, too.

Re: Adding a graphic on a spefisific location on the map

SebastianGreifeneder1 — Sat, 11 Dec 2021 15:29:56 GMT

Instead of using an asynchronous task you can do something like this:

mapView.setOnStatusChangedListener(new OnStatusChangedListener() {
public void onStatusChanged(Object source, STATUS status) {

          if (status == STATUS.INITIALIZED) {
            ...
          }
        }
      });