Flex 加载地图

一、Arcgis for Flex api方法介绍

     a.AddLayer(layer:Layer, index:int = -1);向地图添加一个图层。

     b.使用ActionScript地图上添加一层

       var myGraphicsLayer:GraphicsLayer = new GraphicsLayer();

       myMap.addLayer(myGraphicsLayer);

二. MAP属性介绍

    1.scale 地图比例尺

     2.extent 地图范围

     3.infoWindow 地图的信息窗口

     4.initialExtent 地图的初始程度

   

三、代码

1.ArcGis for Flex Api 简单加载地图

<?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:esri="http://www.esri.com/2008/ags" 
			   xmlns:mx="library://ns.adobe.com/flex/mx"  minWidth="955" minHeight="600">
	 
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	
	
	<esri:Map id="myMap">
		<esri:extent>
			<esri:Extent xmin="-14298000" ymin="2748000" xmax="-6815000" ymax="7117000">
				<esri:SpatialReference wkid="102100"/>
			</esri:Extent>
		</esri:extent>
		<esri:ArcGISTiledMapServiceLayer url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Physical_Map/MapServer"/>
	 
	</esri:Map>

	
</s:Application>

2.通过配置xml文件方式。在实际开发中一般采用这种方法。

Map_Service.xml

<?xml version="1.0" encoding="UTF-8"?>
<serives>
    
	<serive id="img_map_1" type="agtmp" clas="ArcGISTiledMapServiceLayer" name="电子地图" url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Physical_Map/MapServer">
		
	</serive>
    <scal>
	<sc data="80000000"></sc>
</scal>
</serives>

MAPTest.mxml

<?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:esri="http://www.esri.com/2008/ags" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
			   initialize="init()" 
			   >
	
	<fx:Script>
		<![CDATA[
			import mx.events.FlexEvent;
			import mx.events.MoveEvent;	
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;
			import mx.rpc.http.HTTPService;
			import com.esri.ags.layers.ArcGISDynamicMapServiceLayer;
			import com.esri.ags.layers.ArcGISImageServiceLayer;
			import com.esri.ags.layers.ArcGISTiledMapServiceLayer;
			import com.esri.ags.layers.Layer;
			[Bindable] private var _map:Map; 
			[Bindable] public var mapType:String;
			[Bindable] public var proxyUrl:String;
			[Bindable] public	var scaleValue:Number; 
			public var layer:ArcGISTiledMapServiceLayer=new ArcGISTiledMapServiceLayer();
			public var layer2:ArcGISTiledMapServiceLayer=new ArcGISTiledMapServiceLayer();
			public var layer3:ArcGISTiledMapServiceLayer=new ArcGISTiledMapServiceLayer();
			public var currentBaseMapId:String; 
			
			public	var configxml:XML; 
			
			
			
			protected function init_loadMap(event:FlexEvent):void
			{
				var service:HTTPService=new HTTPService();
				service.url="xml/Map_Service.xml";
				service.resultFormat="e4x";
				service.addEventListener(ResultEvent.RESULT,onResultHandler);
				service.send();
			}
			
			public function onResultHandler(evt:ResultEvent):void
			{
				configxml=XML(evt.result);
				proxyUrl=configxml.serive.@url;
				mapType=configxml.serive.@clas;
				scaleValue=configxml.scal.sc.@data;
				addLayers(proxyUrl,mapType);
				 
			}		
			public function addLayers(url:String,maptype:String):void{
				
				switch (maptype)
				{
					case "WMSMapServiceLayer":
						

                                                     layer.id=currentBaseMapId;

                                                     this.map.addLayer(Layer(layer),0);

                                                     break;					
					case "ArcGISTiledMapServiceLayer":
												layer.url=url;
						layer.id=currentBaseMapId;
						this.map.addLayer(Layer(layer),0);
						break;
					case "ArcGISDynamicMapServiceLayer":
												layer3.url=url;
						layer3.id=currentBaseMapId;
						this.map.addLayer(Layer(layer3),0);
						break
					
				}
			}
			
			
		]]>
	</fx:Script>
	
	
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	
	
	<esri:Map   initialize="init_loadMap(event)"   scale="{scaleValue}" id="map"  >
		
 
	</esri:Map>
</s:Application>

导入swf文件地址放到项libs 文件夹下即可。下载地址：http://download.csdn.net/detail/allen_gang/5681675