topic Re: How can i GET visibleLayers ?? in ArcGIS API for Flex Questions

How can i GET visibleLayers ??

aureliensebert — Fri, 10 Feb 2012 11:15:40 GMT

in an application I try to save the layer properties (transparency, visible, etc. ..) but I can not retrieve visibleLayers from an ArcGISDynamicMapServiceLayer because visibleLayers is a method used to SET (not GET) the visible layers for the map service.
someone has an idea ?

      for each (var layer:Layer in map.layers)      {      if (layer is ArcGISDynamicMapServiceLayer){      var visLayers:Array =[];      //NOT WORK !!!!!      visLayers = ArcGISDynamicMapServiceLayer(layer).visibleLayers;          }          }

Aurélien SEBERT
CAUE DU NORD
FRANCE

Re: How can i GET visibleLayers ??

RobertScheitlin__GISP — Fri, 10 Feb 2012 11:22:46 GMT

Aurélien,

I don't think you are understanding the documentation.

http://help.arcgis.com/en/webapi/flex/apiref/com/esri/ags/layers/ArcGISDynamicMapServiceLayer.html

visibleLayers    property
visibleLayers:ArrayCollection

Sets the visible layers of the exported map. By default, the visible layers are as defined by the default visibility in LayerInfo.

This property can be used as the source for data binding.

Implementation
    public function get visibleLayers():ArrayCollection
    public function set visibleLayers(value:ArrayCollection):void

So you can get the visibleLayers from the ArcGISDynamicMapServiceLayer as an ArrayCollection.

Re: How can i GET visibleLayers ??

aureliensebert — Sat, 11 Dec 2021 19:58:22 GMT

thank you ... 🙂 it's work

I did not understand the documention --- French (or only me) are bad in English

 for each (var layer:Layer in map.layers) 
    {
     if (layer is ArcGISDynamicMapServiceLayer){
     var visLayers:ArrayCollection = new ArrayCollection;
     
     visLayers = ArcGISDynamicMapServiceLayer(layer).visibleLayers;
     
     Alert.show(visLayers.source.join(","));
     
     // ex : result : 0,1,2,4,7,8
    } 
    
   }