ArcGIS for Flex Learning mapping---switching basemaps

Start today with a systematic study of ArcGIS for Flex, first from ESRI's example

1<?xml version= "1.0" encoding= "Utf-8"?>2<s:application xmlns:fx= "http://ns.adobe.com/mxml/2009"3Xmlns:s= "Library://ns.adobe.com/flex/spark"4Xmlns:esri= "Http://www.esri.com/2008/ags"5Pagetitle= "Toggle between Map Services" >6<!--7 Description:8 This is the sample demonstrates how to allow users to change9 between different basemaps. There is different waysTenTo visually accomplish ThisBehavior ThisIs just one example. One  A It also ensures that the levels of detail (LOD) was updated based on which Basemap is selected. -If all base maps has the same lods, you wouldn ' t need the Layershowhandler function. -  the Documentation: - For more information, see the API documentation. -http//resources.arcgis.com/en/help/flex-api/apiref/com/esri/ags/geometry/mappoint.html -http//resources.arcgis.com/en/help/flex-api/apiref/com/esri/ags/layers/tiledmapservicelayer.html +http//Resources.arcgis.com/en/help/flex-api/apiref/com/esri/ags/layers/tiledmapservicelayer.html#tileinfo -http//resources.arcgis.com/en/help/flex-api/apiref/com/esri/ags/layers/supportclasses/tileinfo.html +http//resources.arcgis.com/en/help/flex-api/apiref/com/esri/ags/layers/supportclasses/lod.html A  athttp//resources.arcgis.com/en/help/flex-api/concepts/index.html#/types_of_layers/017p00000027000000/ -  - ArcGIS REST API Documentation: -http//resources.arcgis.com/en/help/rest/apiref/mapserver.html -http//resources.arcgis.com/en/help/rest/apiref/tile.html -  inArcGIS forServer Documentation: -http//resources.arcgis.com/en/help/main/10.1/#/what_is_a_map_service/0154000002m7000000/ tohttp//resources.arcgis.com/en/help/main/10.1/#/what_is_map_caching/01540000048q000000/ +- -  the<fx:Script> *<![cdata[ $             ImportCom.esri.ags.geometry.MapPoint;Panax Notoginseng             ImportCom.esri.ags.layers.TiledMapServiceLayer; -  the             Importmx.events.FlexEvent; +  A             Privatefunction Layershowhandler (event:flexevent):void the             { +                 //update the Lods/zoomslider to use/show the levels for the selected base map -var Tiledlayer:tiledmapservicelayer =Event.target as Tiledmapservicelayer; $Mymap.lods =TiledLayer.tileInfo.lods; $             } -]]> -</fx:Script> the  -<s:controlBarContent>Wuyi<s:richtext width= "100%" > the This is the sample demonstrates how to allow users to change - between different basemaps. There is different ways WuTo visually accomplish ThisBehavior ThisIs just one example. -Click the different buttons on the bar below toSwitchbasemaps. About</s:RichText> $</s:controlBarContent> -  -<esri:map id= "MyMap" -Level= "4" ALoad= "Mymap.centerat (New MapPoint ( -11713000, 4822000)) > +<esri:arcgistiledmapservicelayer show= "Layershowhandler (event)" theUrl= "Http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" -Visible= "{Bb.selectedindex = = 0}"/> $<esri:arcgistiledmapservicelayer show= "Layershowhandler (event)" theUrl= "Http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer" theVisible= "{Bb.selectedindex = = 1}"/> the<esri:arcgistiledmapservicelayer show= "Layershowhandler (event)" theUrl= "Http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer" -Visible= "{Bb.selectedindex = = 2}"/> in<esri:arcgistiledmapservicelayer show= "Layershowhandler (event)" theUrl= "Http://server.arcgisonline.com/ArcGIS/rest/services/Ocean_Basemap/MapServer" theVisible= "{Bb.selectedindex = = 3}"/> About<esri:arcgistiledmapservicelayer show= "Layershowhandler (event)" theUrl= "Http://server.arcgisonline.com/ArcGIS/rest/services/NatGeo_World_Map/MapServer" theVisible= "{Bb.selectedindex = = 4}"/> the</esri:Map> +<s:buttonbar id= "BB" -right= "5" top= "5" theRequireselection= "true" >Bayi<s:dataProvider> the<s:ArrayList> the<fx:String>Streets</fx:String> -<fx:String>Topographic</fx:String> -<fx:String>Imagery</fx:String> the<fx:String>Oceans</fx:String> the<fx:string>national geographic</fx:string> the</s:ArrayList> the</s:dataProvider> -</s:ButtonBar> the</s:Application>

Reprint Address: https://developers.arcgis.com/flex/sample-code/switching-basemaps.htm

ArcGIS for Flex learning mapping---switching basemaps