modify Find Task Zoom In Results Sample?

Anonymous User

Original User: alnesbit

Hello all,

So my end goal is something much larger (http://forums.arcgis.com/threads/19195-enter-address-but-zoom-to-polling-place) on ags 9.3 with flex 2.2. But I'm just starting to learn Flex so I wanted to take an existing sample, the one called Zoom to Found Features http://help.arcgis.com/en/webapi/flex/samples/index.html?sample=FindTask_ZoomInResults and modify it.

It's not working right so I'm hoping someone can show me what I'm missing. (My development environment is ags 10). It finds my feature but it doesn't zoom to the feature. I changed it to a point feature class instead of a polygon. I will attach my code.

Appreciate any help. Thanks,

MyFindTask_ZoomInResults.txt.zip

OwenGeo_0-1782306432900.jpeg

Anonymous User

Original User: rscheitlin

Andrea,

   You are having an issue with trying to set the maps extent to a null extent because you are get one MapPoint back and MapPoints don't have an extent.

Corrected code:

import com.esri.ags.geometry.MapPoint;

private function executeCompleteHandler(event:FindEvent):void
   {
    myGraphicsLayer.clear();
    
    resultSummary.text = "Found " + event.findResults.length + " results.";
    myGraphicsLayer.symbol = sfsFind;
    
    var resultCount:int = event.findResults.length;
    
    if (resultCount == 0)
    {
     Alert.show("No polling places found. Please change your search.");
    }
    else
    {
     // add feature as graphic to graphics layer
     for (var i:int = 0; i < resultCount; i++)
     {
      var graphic:Graphic = FindResult(event.findResults).feature;
      graphic.toolTip = event.findResults.foundFieldName + ": " + event.findResults.value;
      myGraphicsLayer.add(graphic);
     }
     
     // zoom to extent of all features
     var graphicProvider:ArrayCollection = myGraphicsLayer.graphicProvider as ArrayCollection;
     var graphicsExtent:Extent = GraphicUtil.getGraphicsExtent(graphicProvider.toArray());
     if(graphicsExtent){
      map.extent = graphicsExtent.expand(1.1); // zoom out a little
     }else{
      var gra:Graphic = FindResult(event.findResults[0]).feature;
      if(gra.geometry is MapPoint){
       map.centerAt(gra.geometry as MapPoint);
       map.scale = 5000;
      }
     }
    }
   }