前言
关于本篇功能实现用到的 api 涉及类看不懂的，请参照 esri 官网的 arcgis api 3.x for js：esri 官网 api，里面详细的介绍 arcgis api 3.x 各个类的介绍，还有就是在线例子：esri 官网在线例子，这个也是学习 arcgis api 3.x 的好素材。
由于 arcgis api 3.x for js 目前没有 GeojsonLayer， arcgis api 4.x 最新版本目前是支持了的，并且 arcgis api 3.x 提供的 Popup默认只可以弹出一个，某些情况下，用户想加载弹出多个窗口，我一直看看能不能有什么途径，比如 arcgis api 3.x 拓展之类的，对其进行改造达到绘制 Geojson 并同时弹出多个 Popup 的目的。
最终实现效果图：
实现思路
- html 页面以及引用 js 以及 css
<head> <title>地图展示多气泡窗口例子</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=7,IE=9"> <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"> <!-- ArcGIS API for JavaScript CSS--> <link rel="stylesheet" href="https://js.arcgis.com/3.28/esri/css/esri.css"> <!-- Web Framework CSS - Bootstrap (getbootstrap.com) and Bootstrap-map-js (github.com/esri/bootstrap-map-js) --> <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css"/> <!-- PopExtendCss --> <link href="./vendor/ncam/PopupExtended.css" rel="stylesheet" /> <style> html, body, #mapDiv { height: 100%; 100%; box-sizing: content-box; } .buttonRight{ position: absolute; z-index: 999; } .hzLine{ border: none; border-top: 1px solid #333333; margin-top: 6px; margin-bottom: 6px; } .popupTitle{ font-size: 18px; } .popupContent{ font-size: 15px; } .esriPopup.light .titleButton.close, .esriPopup.dark .titleButton.close { margin-top: -5px; } .esriPopup.light .titleButton.maximize, .esriPopup.dark .titleButton.maximize { display:none; } </style> <!-- ArcGIS API for JavaScript library references --> <script> var dojoConfig = { parseOnLoad: false, async: true, tlmSiblingOfDojo: false, packages: [{ name: "ncam", location: location.pathname.replace(//[^/]+$/, '') + "ncam" }] }; </script> <!-- ArcGIS API for JavaScript library references --> <script src="https://js.arcgis.com/3.28/"></script> <!-- Terraformer reference --> <script src="./vendor/terraformer/terraformer.min.js"></script> <script src="./vendor/jquery.js"></script> <script src="./vendor/terraformer-arcgis-parser/terraformer-arcgis-parser.min.js"></script> </head> <body> <div id="mapDiv"></div> <button id="shanghaiPoint" class="btn btn-default buttonRight" style="top:20px;right:20px">餐饮店</button> </body> </html>
- geojson 模拟数据
{ "type": "FeatureCollection", "features": [{ "type": "Feature", "properties": { "Id": 0, "name": "满口香粥店", "address": "(0411)82812888-3806", "phone": "辽宁省大连市xx路" }, "geometry": { "type": "Point", "coordinates": [122.96626809999999, 39.693737519999999] } }, { "type": "Feature", "properties": { "Id": 1, "name": "源惠居酒屋", "address": "(0411)82812888-3806", "phone": "辽宁省大连市xx路" }, "geometry": { "type": "Point", "coordinates": [122.9597131, 39.698272490000001] } }, { "type": "Feature", "properties": { "Id": 2 , "name": "鸣记碳火烤全鱼", "address": "(0411)82812888-3806", "phone": "辽宁省大连市xx路" }, "geometry": { "type": "Point", "coordinates": [122.9597627, 39.699162139999999] } }, { "type": "Feature", "properties": { "Id": 3, "name": "华阳酒店", "address": "(0411)82812888-3806", "phone": "辽宁省大连市xx路" }, "geometry": { "type": "Point", "coordinates": [122.9597626, 39.699911970000002]} }, { "type": "Feature", "properties": { "Id": 4, "name": "翔宇馅饼粥吧庄河店", "address": "(0411)82812888-3806", "phone": "辽宁省大连市xx路" }, "geometry": { "type": "Point", "coordinates": [122.9576213, 39.698847499999999] } }, { "type": "Feature", "properties": { "Id": 5, "name": "鑫来阁川菜馆", "address": "(0411)82812888-3806", "phone": "辽宁省大连市xx路" }, "geometry": { "type": "Point", "coordinates": [122.96235280000001, 39.698096040000003] } }] }
- 核心 geojsonlayer.js 并且集成 Popupextended 拓展代码
自定义一个类，继承 GraphicsLayer：
define([ "dojo/_base/declare", "esri/dijit/PopupTemplate", "./vendor/ncam/PopupExtended.js", "esri/graphic", "esri/layers/GraphicsLayer", "esri/InfoTemplate", "esri/graphicsUtils", "esri/Color", "esri/symbols/SimpleMarkerSymbol", "esri/symbols/SimpleLineSymbol", "esri/symbols/SimpleFillSymbol", "esri/renderers/SimpleRenderer", "esri/SpatialReference", "esri/geometry/webMercatorUtils", "esri/request", "esri/config", "dojo/_base/url", "dojo/_base/lang" ], function (declare,PopupTemplate, PopupExtended, Graphic, GraphicsLayer, InfoTemplate, graphicsUtils, Color, SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol, SimpleRenderer, SpatialReference, webMercatorUtils, esriRequest, esriConfig, Url, lang ) { return declare([GraphicsLayer], { }); });
构造函数自定义 Popup 窗口拓展进来
constructor: function (options) { if (options.infoTemplate !== false) { //create a PopupTemplate var template = new PopupTemplate({ title: "{name}", //fieldInfos: [ // { fieldName: "name", visible: true }, // { fieldName: "address", visible: true}, // { fieldName: "phone", visible: true} //], extended: { //actions: [ // { text: " IconText", className: "iconText", title: "Custom action with an icon and Text", click: function (feature) { alert("Icon Text clicked on " + "id: " + feature.attributes.id + " " + feature.attributes.name); } }, // { text: "", className: "iconOnly", title: "Custom action only using an icon", click: function (feature) { alert("Icon action clicked on " + "id: " + feature.attributes.id + " " + feature.attributes.name); } } //], //uses a pretty bad custom theme defined in PopupExtended.css. scaleSelected: 1.6 } });
……
完整demo源码见小专栏文章尾部：GIS之家小专栏
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