topic Equivelent event to 'update-end' in 4.4? in ArcGIS JavaScript Maps SDK Questions

Equivelent event to 'update-end' in 4.4?

MatthewPilz — Tue, 22 Aug 2017 02:07:37 GMT

Hi. In 3.x there existed an event handler 'update-end' that would be called when the map tiles in the view had finished loading. In 4.x this does not seem to be an option, and the 'then' promise is called as soon as the view initializes but before the data has actually completed loading. Is there an alternative event to facilitate code execution only after the map layer imagery has actually loaded?

Re: Equivelent event to 'update-end' in 4.4?

RobertScheitlin__GISP — Sat, 11 Dec 2021 14:07:06 GMT

Matthew,

Sure there is it is just a property on the layer view called updating:

view.whenLayerView(lyr).then(function(lyrView){
  lyrView.watch("updating", function(val){
    if(!val){  // wait for the layer view to finish updating
      //Now do something after the layer is done drawing
    }
  });
});‍‍‍‍‍‍‍

or you could use WatchUtils whenFalse:

view.whenLayerView(lyr).then(function(lyrView){
  watchUtils.whenFalse(lyrView, "updating", function(val){
    //Now do something after the layer is done drawing
  });
});‍‍‍‍‍‍‍‍‍‍‍‍

Re: Equivelent event to 'update-end' in 4.4?

KenBuja — Wed, 27 Sep 2017 14:40:38 GMT

Rene Rubalcava‌ has created a nice blog post about when things are ready in 4.x: Quick Tip: ArcGIS API 4 for JS - When stuff is ready? - odoenet