ArcGISDynamicMapServiceLayer 中 的 setVisibleLayers 函數
例子功能
1. 顯示一個底圖
2. 疊加一個專題圖，專題圖下面有 很多個空間圖層。
3.在界面上動態顯示 空間圖層的 名稱和複選框，點擊複選框，關閉或者顯示 對應圖層
- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
- <html>
- <head>
- <link rel="stylesheet" href="http://serverapi.arcgisonline.com/jsapi/arcgis/3.5/js/esri/css/esri.css"><script src="http://serverapi.arcgisonline.com/jsapi/arcgis/3.5/"></script>
- <script type="text/javascript">
- dojo.require("esri.map");
- var map,visible = [];
- var layer , layer2;
- function init() {
- dojo.require("esri.layers.FeatureLayer");
- dojo.style(dojo.byId("map"), { width: dojo.contentBox("map").w + "px", height: (esri.documentBox.h - dojo.contentBox("loginTable").h - 40) + "px" });
- map = new esri.Map("map");
- layer = new esri.layers.ArcGISTiledMapServiceLayer("http://1.1.1.1/arcgis/rest/services/V32/androidbase/MapServer");
- map.addLayer(layer);
- layer2 = new esri.layers.ArcGISDynamicMapServiceLayer("http://1.1.1.1/arcgis/rest/services/V32/androidtraffic/MapServer");
- if (layer2.loaded) {
- buildLayerList(layer2);
- }
- else {
- dojo.connect(layer2, "onLoad", buildLayerList);
- }
- }
- function buildLayerList(layer) {
- var infos = layer.layerInfos, info;
- var items = [];
- console.debug(infos.length);
- for (var i=0, il=infos.length; i<il; i++) {
- info = infos[i];
- console.debug(info);
- if (info.defaultVisibility) {
- visible.push(info.id);
- console.debug("visible is "+visible);
- }
- items[i] = "<input type='checkbox' class='list_item' checked='" + (info.defaultVisibility ? "checked" : "") + "' id='" + info.id + "' onclick='updateLayerVisibility();' /><label for='" + info.id + "'>" + info.name + "</label>";
- }
- dojo.byId("layer_list").innerHTML = items.join();
- console.debug (items);
- layer2.setVisibleLayers(visible);
- map.addLayer(layer2);
- }
- function updateLayerVisibility() {
- var inputs = dojo.query(".list_item"), input;
- visible = [];
- for (var i=0, il=inputs.length; i<il; i++) {
- if (inputs[i].checked) {
- visible.push(inputs[i].id);
- }
- }
- // 這段代碼是在所有的圖層都不需要顯示的時候，要把這個參數至成-1 ，否則如果爲空得數組的話，會全部都顯示了。
- if(visible.length === 0){
- visible.push(-1);
- }
- layer2.setVisibleLayers(visible);
- }
- dojo.addOnLoad(init);
- </script>
- </head>
- <body class="tundra">
- <table id="loginTable" width="100%">
- <br />
- Layer List : <span id="layer_list"></span><br />
- <br />
- </table>
- <div id="map" style="margin-left:10px;margin-right:10px;width:97%;border:1px solid #000;"></div>
- <div>
- </div>
- </body>
- </html>