topic Re: Hide DistanceMeasurement2D-layer in LayerList in ArcGIS JavaScript Maps SDK Questions

Hide DistanceMeasurement2D-layer in LayerList

MichaelLodes2 — Sun, 12 Dec 2021 02:02:11 GMT

(API 4.11)

Hi,

as in the title i am trying to hide the layer, that the DistanceMeasureMent2D widget saves its Graphics on, in the LayerList widget. As i have no access to the layer i cannot set the listMode to hide (listMode: "hide").

Defining the operationalItems in the layerList is not the optimal solution as we wan't to change the layers dynamically via php.

A small workaround i found in the GeoNet would be to not allow any Graphicslayers in the Layerlist widget:

var layerList = new LayerList({
  view: view,
  container: document.createElement("div"),
  listItemCreatedFunction: defineActions
});

layerList.operationalItems.on("before-add", function(event){
  if (event.item.layer.type === "graphics") {
    event.preventDefault();
  }
});‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

That works fine for the moment but maybe in the Future we might want to have graphicslayers included.

Changing the LayerListView.js is also not an option.

tl;dr: How to access and hide the DistanceMeasurement2D-layer in the LayerList widget?

Re: Hide DistanceMeasurement2D-layer in LayerList

Noah-Sager — Fri, 29 Mar 2019 17:49:35 GMT

Hi Michael, I'm pretty sure we fixed this at 4.11 to be the default behavior. Here is a sample app that demonstrates how the 2D area and distance measurements are not added to the LayerList widget:

https://codepen.io/noash/pen/MRgJvK

Re: Hide DistanceMeasurement2D-layer in LayerList

MichaelLodes2 — Fri, 29 Mar 2019 18:08:08 GMT

Thank you, i just checked it and can confirm the layer doesn't show up in the Layerlist anymore. Was just moving to 4.11 while in the process of trying to hide that item.