title: Android arcGIS map projections
body: <p>I am using ArcGIS API's in an Android application.  I have used Google API's before.  There is a projection calculation which is possible in Google API like below:</p>
  
  <pre><code>Projection projection = map.getProjection();
          Point p = new Point();
          projection.toPixels(gp, p);//gp is a geoPoint computed earlier.
  </code></pre>
  
  <p>Question: Is there anything similar in ArcGIS API? </p>
  
  <p>I have seen  <code>GeometryEngine.project(point p, spatialReference sr1, spatialReference sr2)</code> method in ArcGIS documentation.  But not sure how to use this to get the similar computation as above.  What spatialReference should I use to get the pixel coordinates?</p>