iclient for openlayer 控制子图层显隐

本文主要是介绍iclient for openlayer 控制子图层显隐，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

获取子图层列表
控制子图层显隐

<div>
<div id="map"></div>
<div class="layer-control ol-control" id="layers"><button type="button"  onclick="toggleLayerList(this);">«</button><div id ="layerList"><div class="title"><label>图层列表</label></div><ul id="layers-content" class="ztree"></ul></div></div>    		
</div>

//获取子图层列表并封装为树形结构
new ol.supermap.LayerInfoService(url).getLayersInfo(function (serviceResult) {let treeNodes = handleTreeData(serviceResult.result.subLayers.layers);let setting = {check: {enable: true},data: {simpleData: {enable: true,rootPId: "0"}},callback: {beforeClick: function (treeId, treeNode, clickFlag) {let zTree = $.fn.zTree.getZTreeObj(treeId);if (treeNode.isParent) {zTree.expandNode(treeNode);return false;}},onCheck: function(event, treeId, treeNode){let zTree = $.fn.zTree.getZTreeObj(treeId),nodes = zTree.getNodes();let parameters = new SuperMap.SetLayerStatusParameters();for (let node of nodes) {if(node.children.length>0){for(let layer of node.children){let layerStatus = new SuperMap.LayerStatus({layerName:layer.layerName,isVisible:layer.checked});parameters.layerStatusList.push(layerStatus);}}}setLayerStatus(parameters);  }}};$.fn.zTree.init($("#layers-content"), setting, treeNodes);});//处理layers中的子图层信息为 ztree所需的数据格式
function handleTreeData(layers) {var treeNodes = [],parent= new Set(), length = layers.length;for (let i = 0; i < length; i++) {let layer = layers[i];let info = map.getLayerInfo({layerName:layer.caption});let pId = 0,pName = '其他';if(info != undefined){pId = info.group_id,pName = info.group_name}if(!parent.has(pId)){parent.add(pId);treeNodes.push({id:pId,name:pName,})}let name = (info!=undefined) ?info.title:layer.caption;let node = {id:i+1,pId:pId,name:name,layerName:layer.name,open:true,isChild :false,checked:layer.visible};treeNodes.push(node);}return treeNodes;}
//重新请求子图层
function setLayerStatus(layerStatusParameters){let url = _map.url;new ol.supermap.LayerInfoService(url).setLayerStatus(layerStatusParameters,function(data){var tempLayerID = data.result.newResourceID;console.log(data);var layer = new ol.layer.Tile({source: new ol.source.TileSuperMapRest({url: url,cacheEnabled:false,extent:_map.getView().getProjection().getExtent(),layersID:tempLayerID,crossOrigin: 'anonymous',}),});_map.addLayer(layer);});}