I did loop through the map layers and got the AGOL name, 'Trail_Lines_7339'.trailLayer.setVisibility(false) locks up the app, and alert(trailLayer) returns undefined.Here's my initMap()- are you using the same shortlist template?function initMap(layers) {
trailLayer = _map.getLayer('Trail_Lines_7339');
//trailLayer.setVisibility(false);
alert(trailLayer);
var supportLayers = [];
var pointLayers = [];
var arrExemptions = [];
$.each(POINT_LAYERS_NOT_TO_BE_SHOWN_AS_TABS.split("|"), function(index, value) {
arrExemptions.push($.trim(value).toLowerCase());
});
var supportingLayersThatAreClickable = [];
$.each(SUPPORTING_LAYERS_THAT_ARE_CLICKABLE.split("|"), function(index, value) {
//alert(SUPPORTING_LAYERS_THAT_ARE_CLICKABLE);
supportingLayersThatAreClickable.push($.trim(value).toLowerCase());
});
//trailLayer = _map.getLayer(SUPPORTING_LAYERS_THAT_ARE_CLICKABLE);
//trailLayer.setVisibility(false);
//alert(trailLayer);
$.each(layers, function(index,value){
if (value.url == null || value.type == "CSV") {
if (
getFeatureSet(value).geometryType == "esriGeometryPoint" &&
$.inArray(value.title.toLowerCase(), arrExemptions) == -1
) {
pointLayers.push(value);
} else {
supportLayers.push(value);
}
} else {
// if the layer has an url property (meaning that it comes from a service), just
// keep going...it will remain in the map, but won't be query-able.
}
});
//_trailLayer = _map.getLayer('Trail_Lines_7339');
//_trailLayer.setVisibility(false);
//alert(_trailLayer);
_initExtent = _map.extent;
var supportLayer;
$.each(supportLayers,function(index,value) {
supportLayer = _map.getLayer($.grep(_map.graphicsLayerIds, function(n,i){return _map.getLayer(n).id == getID(value)})[0]);
/////alert(supportLayer);
if (supportLayer == null) return;
$.each(supportLayer.graphics,function(index,value) {
value.attributes.getValueCI = getValueCI; // assign extra method to handle case sensitivity
});
if ($.inArray(value.title.toLowerCase(), supportingLayersThatAreClickable) > -1) {
dojo.connect(supportLayer, "onMouseOver", baselayer_onMouseOver);
dojo.connect(supportLayer, "onMouseOut", baselayer_onMouseOut);
dojo.connect(supportLayer, "onClick", baselayer_onClick);
} else {
dojo.connect(supportLayer, "onClick", function(){unselect()});
}
});
var contentLayer;
var colorScheme;
var colorOrder = COLOR_ORDER.split(",");
var colorIndex;
$.each(pointLayers,function(index,value) {
_map.removeLayer(_map.getLayer($.grep(_map.graphicsLayerIds, function(n,i){return _map.getLayer(n).id == getID(value)})[0]));
$.each(getFeatureSet(value).features, function(index,value) {
value.attributes.getValueCI = getValueCI; // assign extra method to handle case sensitivity
value.attributes[FIELDNAME_ID] = index; // assign internal shortlist id
});
/* color index assignment is a weird bit of voodoo. first thing to consider
is that layers names actually appear in tabs in reverse order (i.e. last layer in
is leftmost tab). this means that we have to invert the color index for things to match
right. also, using modulus to handle overflow -- when there are more layers
than colors. so, we end up re-using colors but keeping the sequence. */
colorIndex = (pointLayers.length - index - 1) % colorOrder.length;
colorScheme = $.grep(COLOR_SCHEMES, function(n,i){
return n.name.toLowerCase() == $.trim(colorOrder[colorIndex].toLowerCase())
})[0];
contentLayer = buildLayer(
getFeatureSet(value).features.sort(SortByNumber),
colorScheme.iconDir,
colorScheme.iconPrefix
);
contentLayer.color = colorScheme.color;
contentLayer.title = value.title;
dojo.connect(contentLayer, "onMouseOver", layer_onMouseOver);
dojo.connect(contentLayer, "onMouseOut", layer_onMouseOut);
dojo.connect(contentLayer, "onClick", layer_onClick);
//alert(contentLayer.title); only the tab layers for this function
_map.addLayer(contentLayer);
_contentLayers.push(contentLayer);
});
_contentLayers.reverse();
$.each(_contentLayers,function(index,value){
$("#tabs").append('<div class="tab" onclick="activateLayer(_contentLayers['+index+'])">'+value.title+'</div>');
});
if ($(".tab").length == 1) $(".tab").css("display", "none");
activateLayer(_contentLayers[0]);
dojo.connect(_map.infoWindow,"onHide",infoWindow_onHide);
$("#zoomToggle").css("visibility","visible");
$("#whiteOut").fadeOut("slow");
//trailLayer = _map.getLayer('Trail_Lines_7339');
//trailLayer.setVisibility(false);
//alert(trailLayer);
}
