ArcGIS Android - Get LatLon position of the graphic

Question

I'm adding marker to my map using the following code:

mvHelper.addMarkerGraphic(Double.parseDouble(friendData.getLatitude()), Double.parseDouble(friendData.getLongitude()), friendData.getFriendName(), friendData.getStatus(), null, icon, false,
                0);

This is my listener:

mvHelper.setOnGraphicClickListener(new OnGraphicClickListener() {
        @Override
        public void onGraphicClick(Graphic graphic) {
            Log.d("MVHELPER GRAPHIC LISTENER TAG",graphic.toString());
            calculateDirection((float)((Point)graphic.getGeometry()).getX(),(float)((Point)graphic.getGeometry()).getY());
        }
    });  

I'm trying to get the lat long position of the clicked marker. But the listener doesn't provide it. So I tried the above way and got this error:

com.esri.core.io.EsriServiceException:Unable to complete operation. Location "Location 2" in "Stops" is unlocated. Need atleast 2 valid stops. "Stops" does not contain valid input for any route.

and this is the method where I get the route:

calculateDirection(float x, float y){
Log.d("Marker X and Y",String.format("%f // %f",x,y));
final Point loc = mapView.toMapPoint(x, y);
Log.d("Marker X and Y in MapPoint",String.format("%f // %f",loc.getX(),loc.getY()));
Thread t = new Thread() {
        @Override
        public void run() {
            try {

                RouteParameters rp = mRouteTask
                        .retrieveDefaultRouteTaskParameters();
                NAFeaturesAsFeature rfaf = new NAFeaturesAsFeature();

                Point p = (Point) GeometryEngine.project(loc, wm,
                        egs);
                Log.d("Marker X and Y after projection",String.format("%f // %f",p.getX(),p.getY()));
                StopGraphic point1 = new StopGraphic(mLocation);
                StopGraphic point2 = new StopGraphic(p);
                rfaf.setFeatures(new Graphic[] { point1, point2 });
                rfaf.setCompressedRequest(true);
                rp.setStops(rfaf);

                rp.setOutSpatialReference(wm);

                mResults = mRouteTask.solve(rp);
                mHandler.post(mUpdateResults);
            } catch (Exception e) {
                mException = e;
                mHandler.post(mUpdateResults);
            }
        }
    };

    t.start();

}

Update 1:

After trying @jdONeill answer. I get the Lat and Long values.This is what I did.

Point temp = (Point)graphic.getGeometry();

Point p = (Point) GeometryEngine.project(temp, wm,egs);
calculateDirection((float) p.getX(), (float) p.getY());

This is the result:

04-30 16:17:54.408  17908-17908/com.test.esrisample D/Marker X and Y﹕ -93.203285 // 44.881104
04-30 16:17:54.408  17908-17908/com.test.esrisample D/Marker X and Y in MapPoint﹕ -10379311.931913 // 5607101.545301
04-30 16:17:54.458  17908-17908/com.test.esrisample D/dalvikvm﹕ GC_FOR_ALLOC freed 484K, 22% free 10018K/12760K, paused 16ms, total 16ms
04-30 16:17:54.719  17908-18235/com.test.esrisample D/Marker X and Y after projection﹕ -93.238945 // 44.908331

Why is there a slight change in the latitude and longitude values?

Answer 1

Get the geometry from the Graphic with getGeometry(). If Geometry.isPoint() returns true you can get the X and Y coordinate of the point with Point.getX() & Point.getY() respectively. To get a lat/lon you will need to ensure you have the correct projection. Your route code uses the GeometryEngine to reproject the point so after your conversion you should have the lat/lon of the point graphic.

As to the exception you are getting, you must ensure the following:

• Both points are on a network to route
• Both points are in the same projection

From your code it looks like your Map is in wm but your stop point representing your graphic is in egs.