topic API for Flex tutorial in ArcGIS API for Flex Questions

API for Flex tutorial

DustinHolt — Thu, 13 Feb 2014 15:36:23 GMT

I'm doing a tutorial on the API for Flex using flash builder and I'm having a problem. In this exercise I'm creating a cached map service with a tiled map service as the base map, and setting the extent. I have followed the tutorial to the tea, but I keep getting "Object is not assigned". Can anyone see where I'm going wrong.

Re: API for Flex tutorial

Anonymous User — Thu, 13 Feb 2014 15:43:49 GMT

Original User: ad_giles@hotmail.com

Dustin,

I cannot see where the louisville extent is being set, try removing the load="map.extent = louisville.fullextent"

Regards

Anthony

Re: API for Flex tutorial

DustinHolt — Thu, 13 Feb 2014 17:05:31 GMT

It works now, I don't now why they tried to do it that way. Thanks

Re: API for Flex tutorial

Anonymous User — Sun, 12 Dec 2021 03:11:42 GMT

Original User: rscheitlin

Dustin,

Where is this Flex Tutorial located?

If your code looks like this it works fine:

<?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"
               xmlns:esri="http://www.esri.com/2008/ags"
               minWidth="955" minHeight="600">
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <esri:Map id="map">
        <esri:ArcGISTiledMapServiceLayer url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>
        <esri:ArcGISDynamicMapServiceLayer id="louisville" url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Louisville/LOJIC_LandRecords_Louisville/MapServer" load="{map.extent = louisville.fullExtent}"/>
    </esri:Map>        
</s:Application>

Re: API for Flex tutorial

DustinHolt — Thu, 13 Feb 2014 17:51:53 GMT

Here is a PDF of the exercise.

Re: API for Flex tutorial

Anonymous User — Thu, 13 Feb 2014 17:59:27 GMT

Original User: rscheitlin

Dustin,

You will notice (upon close observation) that the changes I indicated are included in the exercise steps.

and give it an ???id??? of ???louisville???.

load="{map.extent = louisville.fullExtent}"

Flex is a case sensitive language so you have to be very cautious of that fact.

Re: API for Flex tutorial

DustinHolt — Thu, 13 Feb 2014 18:11:57 GMT

I found where I went wrong now. I had the "load="{map.extent = louisville.fullExtent}"/>" as a separate line, when it should have been a part of the "<esri:ArcGISDynamicMapServiceLayer" line.

Thanks Robert

Re: API for Flex tutorial

Anonymous User — Thu, 13 Feb 2014 18:19:01 GMT

Original User: rscheitlin

Dustin,

I went back and returned the answer credit to Anthony as he was the one that originally answered your question. I just wanted to add additional questions and comments, not take his points.

Re: API for Flex tutorial

DustinHolt — Thu, 13 Feb 2014 18:20:53 GMT

Yes, Thanks Anthony.