topic Re: progress while loading feature layer. in ArcGIS JavaScript Maps SDK Questions

progress while loading feature layer.

jaykapalczynski — Tue, 29 Jul 2014 18:32:51 GMT

Is there a way to alert the user while a layer is being drawn o the screen...

I have one that is rather large and it take a second or two...I have it scale dependent so it only draws when zoomed far in but is still a bit large...I want them to know for sure that its drawn completely.

I have an image that spins but just dont know where to put the code to start and stop (show and hide) this image.

var flArchitecture = new FeatureLayer("https://server/arcgis/rest/services/Test/Resources/MapServer/1", {

mode: FeatureLayer.MODE_ONDEMAND,

infoTemplate: templateHR,

outFields: ['*']

});

app.map.addLayer(flArchitecture);

Re: progress while loading feature layer.

TimWitt2 — Tue, 29 Jul 2014 18:38:17 GMT

You could fire an event that shows your image on update-start and then remove the image on update-end.

Re: progress while loading feature layer.

KevinDeege — Tue, 29 Jul 2014 18:41:38 GMT

Hi Jay, this might work for you:

JS API 3.2 - When do layers render?‌

The map and the featurelayer both have this property (update-end)

featurelayer-amd | API Reference | ArcGIS API for JavaScript‌

Re: progress while loading feature layer.

TracySchloss — Tue, 29 Jul 2014 19:02:49 GMT

I have mine placed on the map events. This works pretty well since then I don't have to track which type of layer is currently loading. I have a loading image within my mapDiv

var loading = dom.byId("loadingImg");

map.on('update-start', showLoading);

map.on('update-end', hideLoading);

function showLoading(){

domUtils.show(loading);

map.disableMapNavigation();

map.hideZoomSlider();

}

function hideLoading(error){

domUtils.hide(loading);

map.enableMapNavigation();

map.showZoomSlider();

}

Re: progress while loading feature layer.

jaykapalczynski — Tue, 29 Jul 2014 19:52:31 GMT

Thank all....

I do the below and it breaks....I comment out the 2 "app.map.on" and the image shows up but there is no control to stop it...

Is there a Require that I am missing?

UPDATE:

Re: progress while loading feature layer.

jaykapalczynski — Tue, 29 Jul 2014 19:59:21 GMT

Tracy..I think I see it...your example

map.on('update-end' ) , hideLoading);

you had an extra ) after update-end

Working now...THANK YOU ALL FOR YOUR THOUGHTS AND HELP

Re: progress while loading feature layer.

TracySchloss — Tue, 29 Jul 2014 20:05:41 GMT

Glad you figured it out. I was having some very weird behavior with my copy/paste, so I was manually trying to type out the parts that weren't right. I fixed my answer so other people will have the right syntax.

Re: progress while loading feature layer.

jaykapalczynski — Wed, 30 Jul 2014 13:07:56 GMT

Wanted to give credit to all of you that chimed in on this post.....I thank you all very much....