Has anyone ever had an issue with the operational layers repeating a layer when looping through them? It seems to happen on mobile devices and on appstudio mobile but not on desktop app. I am simply wanting to loop though the layers, but I seem to have a repeating layer. map . operationalLayers . forEach ( function ( value ) { popupMessageBox . messageText + = "\nvalue.name = " + value . name } ) ; In this above example with 4 layers, the first time I run it, it gives me this result layer.name = 1 layer.name = 2layer.name = 3layer.name = 4 Then I run it again and I get this result. It seems to happen intermittently and only on my mobile device layer.name = 1 layer.name = 2layer.name = 2layer.name = 4 Wondering if anyone has seen this type of behavior?

M Ka, one of my colleagues tried this out in a test and wasn't able to reproduce the problem on a mobile device. That was using the same code you provided with a different web map. If you're able, please log the issue with Esri support so we can follow up. Esri Support Home

That would be so helpful. You will need to load a mapview/loader/map page again and again, looking at the operational layers on load. Mine seems to repeat them quite frequently as I mentioned above

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map.operationalLayers repeating Layer

MKa

Has anyone ever had an issue with the operational layers repeating a layer when looping through them? It seems to happen on mobile devices and on appstudio mobile but not on desktop app.

I am simply wanting to loop though the layers, but I seem to have a repeating layer.

 map<SPAN class="punctuation token">.</SPAN>operationalLayers<SPAN class="punctuation token">.</SPAN><SPAN class="token function">forEach</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">function</SPAN><SPAN class="punctuation token">(</SPAN>value<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
    popupMessageBox<SPAN class="punctuation token">.</SPAN>messageText <SPAN class="operator token">+</SPAN><SPAN class="operator token">=</SPAN> <SPAN class="string token">"\nvalue.name = "</SPAN> <SPAN class="operator token">+</SPAN> value<SPAN class="punctuation token">.</SPAN>name
 <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

In this above example with 4 layers, the first time I run it, it gives me this result

layer.name = 1

layer.name = 2layer.name = 3layer.name = 4

Then I run it again and I get this result. It seems to happen intermittently and only on my mobile device

layer.name = 1

layer.name = 2layer.name = 2layer.name = 4

Wondering if anyone has seen this type of behavior?

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JamesBallard1

Hi M Ka‌,

I'm not aware of any problems like that. Can you provide some more information, or maybe even a small reproducer app that shows the problem?

You mentioned mobile. Is that Android or iOS? Also, what version of Runtime are you using?

MKa

I can not figure out why this is happening. It is happening in both IOS and Android and i am running the latest version of Runtime. I have added 4 layers to my webmap and on mobile (cell) only, it sometimes is repeating the layers when I loop through the operational layers of a given map.

MKa

Is there a way to requery the operationallayers of a map? It is almost like on mobile, it takes longer to load and somehow a duplicate is getting returned in my above loop. Again, this only happens on the mobile and it happens using the AppStudio mobile app.

MKa

I am loading a MapView page with a loader, but on mobile when looping through the operational layers I am getting duplicates. When I return to the page or come into the mapview for the first time.

MapView <SPAN class="punctuation token">{</SPAN>
    map<SPAN class="punctuation token">:</SPAN> MapFieldSelectedLoader<SPAN class="punctuation token">.</SPAN>item
<SPAN class="punctuation token">.</SPAN>
<SPAN class="punctuation token">.</SPAN>
<SPAN class="punctuation token">.</SPAN>

Component<SPAN class="punctuation token">.</SPAN>onCompleted<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN>
        MapFieldSelectedLoader<SPAN class="punctuation token">.</SPAN>sourceComponent <SPAN class="operator token">=</SPAN> MapFieldSelected<SPAN class="punctuation token">;</SPAN>        
    <SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">.</SPAN>
<SPAN class="punctuation token">.</SPAN>
<SPAN class="punctuation token">.</SPAN>
<SPAN class="punctuation token">.</SPAN>
Loader <SPAN class="punctuation token">{</SPAN>
        id<SPAN class="punctuation token">:</SPAN> MapFieldSelectedLoader
    <SPAN class="punctuation token">}</SPAN>

    Component <SPAN class="punctuation token">{</SPAN>
        id<SPAN class="punctuation token">:</SPAN> MapFieldSelected

        Map <SPAN class="punctuation token">{</SPAN>
            id<SPAN class="punctuation token">:</SPAN> mapFieldSelected
            autoFetchLegendInfos<SPAN class="punctuation token">:</SPAN> <SPAN class="keyword token">true</SPAN>
            initUrl<SPAN class="punctuation token">:</SPAN> app<SPAN class="punctuation token">.</SPAN>webMapUrl

            <SPAN class="comment token">//This returns the duplicate layer when looping through on mobile</SPAN>
            onLoadStatusChanged<SPAN class="punctuation token">:</SPAN> 
            <SPAN class="punctuation token">{</SPAN>
                    <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>loadStatus <SPAN class="operator token">===</SPAN> Enums<SPAN class="punctuation token">.</SPAN>LoadStatusLoaded<SPAN class="punctuation token">)</SPAN>
                    <SPAN class="punctuation token">{</SPAN>                        
                     operationalLayers<SPAN class="punctuation token">.</SPAN><SPAN class="token function">forEach</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">function</SPAN><SPAN class="punctuation token">(</SPAN>lyr<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
                     popupMessageBox<SPAN class="punctuation token">.</SPAN>messageText <SPAN class="operator token">+</SPAN><SPAN class="operator token">=</SPAN> <SPAN class="string token">"\n Loaded lyr.name = "</SPAN> <SPAN class="operator token">+</SPAN> lyr<SPAN class="punctuation token">.</SPAN>name                            
                        <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                    <SPAN class="punctuation token">}</SPAN>
            <SPAN class="punctuation token">}</SPAN>
        <SPAN class="punctuation token">}</SPAN>
    <SPAN class="punctuation token">}</SPAN>

<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

JamesBallard1

M Ka‌,

Thanks for the additional info. Is the web map you're accessing public? If so, please share the url and we can try to reproduce the problem on our end.

MKa

Could I get an email in which to send the URL of the WebMap to. I will need to grant you access and give you a username and password to our portal that holds the web map. I cannot make the whole thing public.

JamesBallard1

M Ka‌ thanks for the offer. I'll see if I can find a web map with four (or more) layers that we have access to and see if I can reproduce the problem that way.

MKa

I just created a Web map with these layers

I then call up a MapView page pointing to this Web Map and loader like the code I have above. It give me duplicates for the the operational layers when I loop through the layers on the load of the map. This happens when I Pop the MapView off and then back on, which in turn forces the map on the mapview to reload as it is a new page. It happens about every other time and ONLY on my mobile devices.

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