arcgis popup关闭事件
In 3.x you look for the popups hide event
https://developers.arcgis.com/javascript/3/jsapi/popup-amd.html#event-hide
In 4.x
watchUtils.whenTrue(view.popup,'visible', function(){ watchUtils.whenFalseOnce(view.popup,'visible', function(){ console.info('popup has been closed'); }) });