<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"      xmlns:s="library://ns.adobe.com/flex/spark"      xmlns:mx="library://ns.adobe.com/flex/mx">   <s:layout>  <s:VerticalLayout gap="10"        paddingBottom="10"        paddingLeft="10"        paddingRight="10"        paddingTop="10" /> </s:layout>   <fx:Script>  <![CDATA[   import com.esri.ags.events.LayerEvent;   import com.esri.ags.layers.FeatureLayer;   import com.esri.ags.layers.supportClasses.Field;   import com.esri.ags.layers.supportClasses.LayerDetails;      import mx.controls.Alert;   import mx.controls.Label;      import spark.components.HGroup;      private var fLayer:FeatureLayer = null;      protected function onInitLayerClick(event:MouseEvent):void   {    fLayer = new FeatureLayer(txtUrl.text);    fLayer.outFields = new Array("*");    fLayer.addEventListener(LayerEvent.LOAD, onLayerLoad);    fLayer.addEventListener(LayerEvent.LOAD_ERROR, onLayerLoadError);    dispatchEvent(new LayerEvent(LayerEvent.LOAD, fLayer));   }      protected function onLayerLoad(event:LayerEvent):void   {    var layerDetails:LayerDetails = fLayer.layerDetails;    var fields:Array = layerDetails.fields;        groupContainer.removeAllElements();    for each (var field:Field in fields)    {     var hGroup:HGroup = new HGroup();     hGroup.gap = 5;          var lblName:Label = new Label();     lblName.width = 200;     lblName.text = "Name: " + field.name + ";";     hGroup.addElement(lblName);          var lblAlias:Label = new Label();     lblAlias.width = 200;     lblAlias.text = "Alias: " + field.alias + ";";     hGroup.addElement(lblAlias);          var lblNullable:Label = new Label();     lblNullable.width = 100;     lblNullable.text = field.nullable ? "Nullable" : "Not nullable;";     hGroup.addElement(lblNullable);          var lblType:Label = new Label();     lblType.width = 100;     switch (field.type)     {      case Field.TYPE_BLOB:       lblType.text = "Is Blob;";       break;      case Field.TYPE_DATE:       lblType.text = "Is date;";       break;      case Field.TYPE_DOUBLE:       lblType.text = "Is double;";       break;      case Field.TYPE_GEOMETRY:       lblType.text = "Is geometry;";       break;      case Field.TYPE_GUID:       lblType.text = "Is GUID;";       break;      case Field.TYPE_GLOBAL_ID:       lblType.text = "Is global id;";       break;      case Field.TYPE_INTEGER:       lblType.text = "Is integer;";       break;      case Field.TYPE_OID:       lblType.text = "Is object id;";       break;      case Field.TYPE_RASTER:       lblType.text = "Is raster;";       break;      case Field.TYPE_SINGLE:       lblType.text = "Is single;";       break;      case Field.TYPE_SMALL_INTEGER:       lblType.text = "Is short;";       break;      case Field.TYPE_STRING:       lblType.text = "Is text;";       break;      case Field.TYPE_XML:       lblType.text = "Is xml;";       break;     }     hGroup.addElement(lblType);          var lblEditable:Label = new Label();     lblEditable.width = 100;     lblEditable.text = field.editable ? "Editable" : "Not editable;";     hGroup.addElement(lblEditable);          if (field.length > 0)     {      var lblLength:Label = new Label();      lblLength.width = 100;      lblLength.text = "Field length: " + field.length;      hGroup.addElement(lblLength);     }          groupContainer.addElement(hGroup);    }   }      protected function onLayerLoadError(event:LayerEvent):void   {    Alert.show(event.fault.message.toString(), "Layer is not loaded");   }  ]]> </fx:Script>       <s:TextInput id="txtUrl"     width="100%"     text="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Network/USA/MapServer/67"/>   <s:Button label="Initialize layer"     click="onInitLayerClick(event)"/>   <s:VGroup width="100%"     height="100%"     gap="5">    <s:Scroller width="100%"     height="100%">      <s:VGroup height="100%"      width="100%"      id="groupContainer"/>     </s:Scroller>    </s:VGroup>  </s:Application>
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