topic Re: Is a bug of measurement ????? help me! in ArcGIS JavaScript Maps SDK Questions

Is a bug of measurement ????? help me!

luoyong — Thu, 26 May 2011 01:44:33 GMT

hi: there is some thing wrong with the measurement widget, the code as felow:

i user js api of 2.3.

if (measurement != null)
{
    measurement.destroy();
}

measurement = new esri.dijit.Measurement({
                map: map
            }, dojo.byId('apDiv1'));
measurement.startup();

// measurement is a Global object
// this code may be called many times , the first once it work right , but the second.......   it does not work right

the excption is :

tride to register widget with id == apDiv1 but that id is already gegisterdineNumber;

but before i   new the measurement object   a alread call its "destroy();" , does not the "destroy();" work ???

or is it a bug ??? How do i do it ?

thank you.

Re: Is a bug of measurement ????? help me!

derekswingley1 — Thu, 26 May 2011 02:01:08 GMT

There might be a problem here, but why do you need to destroy and re-create the measurement widget over and over?

Re: Is a bug of measurement ????? help me!

luoyong — Thu, 26 May 2011 02:14:34 GMT

There might be a problem here, but why do you need to destroy and re-create the measurement widget over and over?

becuase there are tow or three maps will show in the map contrls, the user click the first map icon in my appliction then the map control will show the first map, and when the user click the other map icon ,then map control will show anthoer.

code like follows:

      if (map == null)
        {
            map = new esri.Map("Map_Panel");
            dojo.connect(map, "onLayersAddResult", AfterLayersAdd);
            dojo.connect(map, "onLayerAddResult", function(layer, err) { AfteLayerAdd(layer, err);});
        }
        else
        {
            extent = map.extent;

         map.destroy();     // this is ok but measurements "destroy()" is not ok.

            map = new esri.Map("Map_Panel");
            dojo.connect(map, "onLayersAddResult", AfterLayersAdd);
            dojo.connect(map, "onLayerAddResult", function(layer, err) { AfteLayerAdd(layer, err); });
            map.extent = extent;
            // dojo.connect(map, "onMouseDrag", onMapMouseDrag);   // Navigation.js
            // dojo.connect(map, "onMouseDragEnd", onMapMouseDragEnd); // Navigation.js
        }

if (measurement != null)
{
measurement.destroy();
}

measurement = new esri.dijit.Measurement({
map: map
}, dojo.byId('apDiv1'));
measurement.startup();

Re: Is a bug of measurement ????? help me!

derekswingley1 — Thu, 26 May 2011 02:19:27 GMT

I see, thanks for the additional details. I think this might be a bug.