ArcGIS FLEX API 2.2- How to load widget data every 30 second

AnjithaSenarath

I need to implement a widget with auto data load and refresh every 30 second. My environment as below

1) Flex API : ArcGIS Flex viewer 2.2 (cannot change  the version as many dependencies )

2) ArcGIS Server 10.1 SP1

I need to load widget data every 30 second after opening the widget. My widget container contains list of incident point and it need to be update 30 second or 1 min. How can I implement self loading widget ?

you advice is highly appreciate 

AnjithaSenarath

Bjorn Thank you for the reply

Actually It does even if ESRI is not  putting it on help pages

Here is steps to proceed if you use older version of Flex API.

1) Publish your map service (Map Service. No need feature service but layer type is feature)

2) In Flex viewer source code's go to > com.esri.viewers > Managers > MapManager.mxml and locate below function

private function addLayerToMap(layerObject:Object, operationalLayer:Boolean):void{}

In that find the switch and find the "   case "feature":  "  and add below code (which is not in original code)

if (autoRefresh > 0)

  {

  setInterval(featureLayer.refresh, autoRefresh * 1000);

  }

3) Go to layer config file and add autorefresh property as to layer xml file

autorefresh world is case sensitive so do not use any capital letters.

<layer label="your layer name" type="feature" visible="true" autorefresh="30" disableclientcaching="true" mode="onDemand" />

you may have more attributes to your layer. I have set autorefresh property to 30 seconds.

This will refresh the map and add any new records to map. However it will not update the opened widget's data list. I think I need to write some more codes to refresh widget data. Anyone has experience in this to reload Query widget by getting layer property "autorefresh"  ?