One layer visible at a time with LayerList?

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05-16-2019 09:24 AM
AlexGilvarry1
New Contributor III

Is it possible to set the LayerList widget to only show one layer at a time in 4.x? 

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RobertScheitlin__GISP
MVP Esteemed Contributor

Alex,

   See this sample. It uses a group layer to set the layers to exclusive mode.

        var demographicGroupLayer = new GroupLayer({
          title: "US Demographics",
          visible: true,
          visibilityMode: "exclusive",
          layers: [USALayer, censusLayer],
          opacity: 0.75
        });‍‍‍‍‍‍‍

https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=widgets-layerl...

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5 Replies
RobertScheitlin__GISP
MVP Esteemed Contributor

Is this a 3.x or 4.x API question?

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AlexGilvarry1
New Contributor III

4.x. Sorry, updated the original question.

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RobertScheitlin__GISP
MVP Esteemed Contributor

Alex,

   See this sample. It uses a group layer to set the layers to exclusive mode.

        var demographicGroupLayer = new GroupLayer({
          title: "US Demographics",
          visible: true,
          visibilityMode: "exclusive",
          layers: [USALayer, censusLayer],
          opacity: 0.75
        });‍‍‍‍‍‍‍

https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=widgets-layerl...

AlexGilvarry1
New Contributor III

This could work! Thanks! Do you know if it's possible to default the layer group to be open so it displays all the child layers when the map loads?

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RobertScheitlin__GISP
MVP Esteemed Contributor

See this thread:

https://community.esri.com/thread/192285-how-to-expand-the-layerlist-in-api-43#comment-696533

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