显示图像-Popup ArcGIS API for Javascript

问题描述

我正在尝试在弹出窗口中显示图像，我已经阅读了文档，已经看到了一些示例的代码（并尝试使用ImageValue和ImageContent进行了一些尝试），但是当我单击带有弹出窗口的map元素时，该图像不显示。我不知道我在做什么错。现在是我的代码and here is my popup when I click on a point：

            var attr = {
                Lat: arr[i][0],//latitude
                Lng: arr[i][1],//longitude
                Image: "localimage.jpg" //image in same folder
            };
            
            var template = new PopupTemplate({
              title: "Lat: {Lat} Lng: {Lng}",mediaInfos: [{
                "title": "","caption": "","type": "image","value": {
                  "sourceURL": "{Image}"
                }
              }]
            });
            
           //when I click on this point after I've added it to the map,//the image doesn't show
             var pointGraphic = new Graphic({
                    geometry: point,symbol: pictureMarkerSymbol,//custom marker
                    attributes: attr,popupTemplate: template
             });

编辑：我重新阅读了一些示例，试图了解我所缺少的内容，并牢记此处给出的答案，最后的解决方案是我错过了一些括号：

var template = new PopupTemplate({
              title: "Lat: {Lat} Lng: {Lng}",content: [{ //Missed [ here
                type: "media",mediaInfos: [{
                title: "",caption: "",value: {
                   sourceURL: "{Image}"
                }
        }]
    }] //Missed ] here
});

感谢您的回复，希望这对以后的人有所帮助

解决方法

mediaInfos是类MediaContent的属性，它是content中可能的PopupTemplate的类型。因此，您需要通过将媒体对象或对象传递给自动广播，将媒体移至内容，并指出内容的类型。像这样的东西

const template = new PopupTemplate({
  title: "Lat: {Lat} Lng: {Lng}",content: [{ // <- media goes in the content
    type: "media",// <- autocast to media
    mediaInfos: [{
      "title": "","caption": "","type": "image","value": {
        "sourceURL": "{Image}"
      }
    }]
  }]
});

更新：

这里有一个我为您制作的工作示例，

<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <title>ArcGIS API for JavaScript Hello World App</title>
  <style>
    html,body,#viewDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }
  </style>

  <link rel="stylesheet" href="https://js.arcgis.com/4.15/esri/css/main.css">
  <script src="https://js.arcgis.com/4.15/"></script>

  <script>
    require([
      'esri/Map','esri/views/MapView','esri/layers/FeatureLayer'
    ],function (Map,MapView,FeatureLayer) {

      const map = new Map({
        basemap: 'streets-navigation-vector'
      });

      const view = new MapView({
        container: 'viewDiv',map: map,zoom: 12,center: {
          latitude: 32.7353,longitude: -117.1490
        }
      });

      function toGraphic(lon,lat,ObjectID,title,addrs,webUrl,imgUrl) {
        return {
          geometry: {
            type: 'point',longitude: lon,latitude: lat
          },attributes: {
            ObjectID,imgUrl
          }
        }
      }
      
      const graphics = [
        toGraphic(
          -117.1560632,32.727482,1,'Automotive Museum','2080 Pan American Plaza,San Diego,CA 92101,United States','http://sdautomuseum.org/','https://lh5.googleusercontent.com/p/AF1QipPSP9PPjlW9nF5OEgvWv9cuXB1TOgYmQg5efP36=w408-h272-k-no'

        ),toGraphic(
          -117.1763293,32.7136902,2,'USS Midway Museum','910 N Harbor Dr,'http://www.midway.org/','https://lh5.googleusercontent.com/p/AF1QipMZfVfLMdgQgmw86X8toLLoe0bLZpYgGHUtz3I2=w408-h306-k-no'
        ),toGraphic(
          -117.2284536,32.7641112,3,'SeaWorld','500 Sea World Dr,CA 92109,'https://seaworld.com/san-diego','https://lh5.googleusercontent.com/p/AF1QipMdd7YDTHMIUsKXyPVSFt_td_EA2WuNyeJF_Tj8=w408-h464-k-no'
        ),toGraphic(
          -117.1557741,32.7360032,4,'Zoo','2920 Zoo Dr,'https://zoo.sandiegozoo.org/','https://lh5.googleusercontent.com/p/AF1QipOQdtIVsWYZG6RvljSRv2LPjwGdXYS3xWJtoIQF=w408-h306-k-no'
        )
      ];

      const layer = new FeatureLayer({
        source: graphics,fields: [
          {
            name: 'ObjectID',alias: 'ObjectID',type: 'oid'
          },{
            name: 'title',alias: 'title',type: 'string'
          },{
            name: 'addrs',alias: 'addrs',{
            name: 'webUrl',alias: 'webUrl',{
            name: 'imgUrl',alias: 'imgUrl',type: 'string'
          }
        ],objectIDField: ['ObjectID'],geometryType: 'point',renderer: {
          type: 'simple',symbol: {
            type: 'text',color: 'red',text: '\ue61d',font: {
              size: 30,family: 'CalciteWebCoreIcons'
            }
          }
        },popupTemplate: {
          title: '{title}',outFields: ['*'],content: [
            {
              type: 'fields',fieldInfos: [
                {
                  fieldName: 'addrs',label: 'Address'
                },{
                  fieldName: 'webUrl',label: 'Web Page'
                }
              ]
            },{
              type: 'media',mediaInfos: [
                {
                  type: 'image',value: {
                    sourceURL: '{imgURL}'
                  }
                }
              ]
            }
          ]
        }
      });
      
      map.add(layer);

    });
  </script>
</head>

<body>
  <div id="viewDiv"></div>
</body>

</html>

arcgis arcgis-js-api javascript

显示图像-Popup ArcGIS API for Javascript

问题描述

解决方法

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