Layer ordering not honoured in TOC

Vidar

Hi,

I am trying to add 3 layers to a group layer in a specific index order. I use the FeatureLayerCreationParams object with the LayerFactory.Instance.CreateLayer() function - but when I look at the results in the TOC - the layers have come in a random order and not the order I specified.

This was working fine in 2.x but since I have moved to 3.x this code does not seem to work - I'm not sure what I can do but I need to fix the problem urgently.

Here is the code I use (I pass in my object called "layer", which holds the index information to pass on):

 

 

await QueuedTask.Run(() =>
{
	Item stagingLayer = ItemFactory.Instance.Create(AgolId, ItemFactory.ItemType.PortalItem);
	if (LayerFactory.Instance.CanCreateLayerFrom(stagingLayer))
	{
		var featureCreateParams = new FeatureLayerCreationParams(stagingLayer)
		{
			IsVisible = layer.Visible,
			MapMemberIndex = layer.LayerOrder,
			
			//Even this does NOT fix the issue
			MapMemberPosition = MapMemberPosition.Index,

			Name = layer.Name
		};

		LayerFactory.Instance.CreateLayer<FeatureLayer>(featureCreateParams, groupLayer);
	}
});

 

 

 

 

NarelleChedzey

Hi, 

I'm sorry;  I'm not able to duplicate your problem with FeatureLayerCreationParams.  I have a group layer containing 3 layers (pointing to a file geodatabase).  Then I run the following code which inserts a hosted feature layer at index 2 in the group layer.   The new layer is inserted at the correct location. 

Can you run this code and see if it works as you expect?  

 

Narelle

protected override void OnClick()
{
  var groupLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<GroupLayer>().FirstOrDefault();
  if (groupLayer == null)
    return;

  // Airports_OPSNET45
  string agolId = "8c1854a8580543b0a4848a0b5fbb0791";
  int index = 2;

  DoIt(agolId, "My layer", index, groupLayer);
}

internal Task DoIt(string AgolId, string name, int index, GroupLayer groupLayer)
{
  return QueuedTask.Run(() =>
  {
    Item stagingLayer = ItemFactory.Instance.Create(AgolId, ItemFactory.ItemType.PortalItem);
    if (LayerFactory.Instance.CanCreateLayerFrom(stagingLayer))
    {
      var featureCreateParams = new FeatureLayerCreationParams(stagingLayer)
      {
        IsVisible = true, 
        MapMemberIndex = index,
        MapMemberPosition = MapMemberPosition.Index,
        Name = name
      };

      Lactory.Instance.CreateLayer<FeatureLayer>(featureCreateParams, groupLayer);
    }
  });
}