-
refresh
- 自從:ArcGIS 適用於 JavaScript 4.21 的 API
如果圖層設置了刷新間隔或調用 refresh() 方法時觸發。事件負載指示圖層數據是否已更改。
- 屬性:
-
類型 說明 dataChanged Boolean指示圖層的數據是否已更改。
例子:
// listen to layer's refresh event to fetch the attachments // for the updated features. layer.on("refresh", function(event){ if (event.dataChanged){ const query = layer.createQuery(); layer.queryObjectIds(query).then(function (objectIds) { let attachmentQuery = { objectIds: objectIds, definitionExpression: layer.definitionExpression, attachmentTypes: ["image/jpeg"] }; layer.queryAttachments(attachmentQuery).then(function (attachments) { attachmentQuery.objectIds.forEach(function (objectId) { if (attachments[objectId]) { // process the updated attachments let attachment = attachments[objectId]; } }); }) .catch(function (error) { console.log("attachment query error", error); }); }); } });
基本信息
以下是所在類或對象的基本信息。
AMD:
require(["esri/layers/BaseDynamicLayer"], (BaseDynamicLayer) => { /* code goes here */ });
ESM:
import BaseDynamicLayer from "@arcgis/core/layers/BaseDynamicLayer";
類:
esri/layers/BaseDynamicLayer
繼承: BaseDynamicLayer > Layer > Accessor
自從:用於 JavaScript 4.4 的 ArcGIS API
用法說明
BaseDynamicLayer refresh事件
的定義如下:
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注:本文由純淨天空篩選整理自arcgis.com大神的英文原創作品 BaseDynamicLayer refresh event。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。