Flex开发ArcGIS问题集锦七:怎样使用导航工具

? ? ? ? ? ? ? ? ? ? ? ? ? ??? ?Flex开发ArcGIS问题集锦七:怎样使用导航工具

我的开发环境：

OS?：?????Microsoft?Windows?XP?Professional?SP3

ArcGIS：??ArcGIS??Server?10

Flex版本：Flash?Builder?4.6.1

Flex?SDK:??4.6

我在网上找了一篇文章?

网址为：http://www.cnblogs.com/wenjl520/archive/2009/06/02/1494539.html?

<?xml version="1.0" encoding="utf-8"?>
<mx:Application
	xmlns:mx="http://www.adobe.com/2006/mxml"
	xmlns:esri="http://www.esri.com/2008/ags"
	pageTitle="Using ArcGIS API for Flex to connect to a cached ArcGIS 
	Online service"
	styleName="plain">
	<esri:Navigation id="navToolbar" map="{myMap}"/>
	<esri:SpatialReference id="sr" wkid="4326"/>
	<mx:ControlBar horizontalGap="0" paddingBottom="0" paddingTop="0"> 
		<mx:Button label="放大"   click="navToolbar.activate
				   (Navigation.ZOOM_IN)"  />
		<mx:Button label="缩小"   click="navToolbar.activate
				   (Navigation.ZOOM_OUT)"  />  
		<mx:Button label="漫游"   click="navToolbar.activate
				   (Navigation.PAN)"  />          
		<mx:Button label="上级窗口"   click="navToolbar.zoomToPrevExtent
				   ()"    enabled="{!navToolbar.isFirstExtent}"/>           
		<mx:Button label="下级窗口"      
				   click="navToolbar.zoomToNextExtent()"    enabled="{!
				   navToolbar.isLastExtent}"/>        
		<mx:Button label="复位" click="navToolbar.zoomToFullExtent()"/>
	</mx:ControlBar>
	<esri:Map crosshairVisible="true" id = "myMap">
		<esri:extent>
			<esri:Extent id="esriMapExtent" xmin="120.5" ymin="30" xmax="122" ymax="31.5"/>  
		</esri:extent>
		<esri:ArcGISTiledMapServiceLayer
			url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer" />
		<esri:GraphicsLayer id="myGraphicsLayer" 
							spatialReference="{sr}"/>
	</esri:Map>
</mx:Application>

我修改后的代码

代码：

<?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" minWidth="955" minHeight="600" xmlns:esri="http://www.esri.com/2008/ags">
	<fx:Script>
		<![CDATA[
			import mx.events.ItemClickEvent;
			protected function toolbar_Clicked(event:ItemClickEvent):void
			{
				trace("到此");
				switch(event.index)
				{
					case 0:
						navToolbar.activate(NavigationTool.PAN);
						break;
					case 1:
						navToolbar.activate(NavigationTool.ZOOM_IN);
						break;
					case 2:
						navToolbar.activate(NavigationTool.ZOOM_OUT);
						break;					
				}
			}
		]]>
	</fx:Script>
	<fx:Declarations>
		<esri:NavigationTool id="navToolbar" map="{map}" />
	</fx:Declarations>
	<esri:Map id="map" scaleBarVisible="false" logoVisible="false" width="100%" height="100%">
		<!--<esri:ArcGISTiledMapServiceLayer
			url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"
			/>-->
		<esri:ArcGISDynamicMapServiceLayer
			url="http://sdrj-wx/arcgis/rest/services/sample/MapServer"/>
	</esri:Map>
	<mx:ToggleButtonBar top="10" horizontalCenter="-260" itemClick="toolbar_Clicked(event)">
		<mx:dataProvider>
			<fx:Array>
				<fx:String>漫游</fx:String>
				<fx:String>放大</fx:String>
				<fx:String>缩小</fx:String>
			</fx:Array>
		</mx:dataProvider>
	</mx:ToggleButtonBar>	
	<s:Button label="上一视图" top="10" 
			  enabled="{!navToolbar.isFirstExtent}" 
			  click="navToolbar.zoomToPrevExtent();" horizontalCenter="30" />
	<s:Button label="下一视图" top="10" 
			  enabled="{!navToolbar.isLastExtent}" 
			  click="navToolbar.zoomToNextExtent();" horizontalCenter="110"/>
	<s:Button label="全图" click="map.zoomToInitialExtent();" top="10" horizontalCenter="190" />
</s:Application>

效果

到此结束！！！