Zoom to Extent of Layer with definitionExpression

MKa

I am trying to zoom to the extent of a layer that has definitionExpression on it.  I cannot get it to zoom to anything but the world view.  I want to setViewpontGeometry(queryLayer.fullExtent), but this doesn't seem to work.  Do I have to build a view point manually?

Connections <SPAN class="punctuation token">{</SPAN>
        target<SPAN class="punctuation token">:</SPAN> map

        onOperationalLayersChanged<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN>
            <SPAN class="token function">identifyQueryLayer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
            queryLayer<SPAN class="punctuation token">.</SPAN>definitionExpression <SPAN class="operator token">=</SPAN> app<SPAN class="punctuation token">.</SPAN>definitionQuery
            
            <SPAN class="comment token">//This doesn't work?</SPAN>
            mapView<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setViewpointGeometry</SPAN><SPAN class="punctuation token">(</SPAN>queryLayer<SPAN class="punctuation token">.</SPAN>fullExtent<SPAN class="punctuation token">)</SPAN>
            
            <SPAN class="comment token">//Do I have to build a viewpoint?</SPAN>
            <SPAN class="comment token">//mapView.setViewpoint(newViewPoint);</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>

JamesBallard1

Hi M Ka‌,

 

     What you're doing looks correct, but you will need to make sure the layer is loaded first. If you move that logic to an onLoadStatusChanged handler, can you see if that works?

Connections <SPAN class="punctuation token">{</SPAN>
    target<SPAN class="punctuation token">:</SPAN> queryLayer

    onLoadStatusChanged<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN>
        <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>queryLayer<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="keyword token">return</SPAN><SPAN class="punctuation token">;</SPAN>

         mapView<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setViewpointGeometry</SPAN><SPAN class="punctuation token">(</SPAN>queryLayer<SPAN class="punctuation token">.</SPAN>fullExtent<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>

Another thing would be to check that the online layer's full extent property on the service is not the full world extent. Alternately, you could also try this:

<SPAN class="keyword token">const</SPAN> viewpoint <SPAN class="operator token">=</SPAN> ArcGISRuntimeEnvironment<SPAN class="punctuation token">.</SPAN><SPAN class="token function">createObject</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"ViewpointExtent"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">{</SPAN>extent<SPAN class="punctuation token">:</SPAN> queryLayer<SPAN class="punctuation token">.</SPAN>fullExtent<SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
mapView<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setViewpoint</SPAN><SPAN class="punctuation token">(</SPAN>viewpoint<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>