阿拉贡,您的回答为我指明了正确的方向。下面是我最后的不干净代码,用于将层添加到数组中然后对其进行控制。
在一个javascript文件中,我初始化了地图,并使用一个函数来切换可见性,如下所示:
//Layer array
var layersArray = [];
//Map view (Initial location)
var view = new ol.View2D({
// the view's initial state
center: ol.proj.transform([*Lat*,*Long*], 'EPSG:4326', 'EPSG:3857'),
zoom: 12
});
/* Map Initialization */
function initializeMap(){
var esribase = new ol.layer.Tile({
preload: Infinity,
source: new ol.source.XYZ({
url: 'http://server.arcgisonline.com/ArcGIS/rest/services/' +
'World_Topo_Map/MapServer/tile/{z}/{y}/{x}'
})
});
var poly1 = new ol.layer.Tile({
source: new ol.source.TileWMS({
url: 'http://localhost:8080/geoserver/wms',
params: {'LAYERS': '*Workspace*:*Layer*', 'TILED': true}
})
});
poly1.setVisible(false);
var poly2 = new ol.layer.Tile({
source: new ol.source.TileWMS({
url: 'http://localhost:8080/geoserver/wms',
params: {'LAYERS': '*Workspace*:*Layer*', 'TILED': true}
})
});
poly2.setVisible(false);
var poly3 = new ol.layer.Tile({
source: new ol.source.TileWMS({
url: 'http://localhost:8080/geoserver/wms',
params: {'LAYERS': '*Workspace*:*Layer*', 'TILED': true}
})
});
poly3.setVisible(false);
layersArray.push(esribase); //0
layersArray.push(poly1); //1
layersArray.push(poly2); //2
layersArray.push(poly3);//3
var map = new ol.Map({
controls: ol.control.defaults().extend([
new ol.control.ScaleLine({
units: ol.control.ScaleLineUnits.METRIC
})
]),
renderer: ol.RendererHint.CANVAS,
target: 'map',
layers: layersArray,
view:view
});
}
// Layer visibility function
function layerswitch(evt){
layersArray[evt.value].setVisible(evt.checked);
}
在HTML中,我使用了简单的复选框(poly1切换示例):
<input style='cursor:pointer' type="checkbox" value="1" onclick="javascript:layerswitch(this)" class="Cpoly1" name="poly1check" id="poly1check"/><label id="poly1checkLabel" for="poly1check">Polygon 1 Layer Switcher</label>