topic Re: Example of checking layer validity before adding to map in ArcGIS JavaScript Maps SDK Questions

Example of checking layer validity before adding to map

TracySchloss — Fri, 18 Dec 2015 18:23:14 GMT

I'm having problems with a map that has many layers. I'm getting one of those obscure errors that doesn't help you one bit. I believe there is an issue with one of my layers, but I've combed through the rest end point and my layer constructors and everything looks OK.

I know I've seen this before - someone posted a chuck of code that would check that the layer was valid before adding, so it was easier to troubleshoot which layer has the problem. It gave you some feedback in the console that told you if there was a problem or not.

Keywords like map, layer, add are all so generic that searching on these words doesn't help. Does anyone remember writing or seeing this code so I could incorporate it into my project?

Re: Example of checking layer validity before adding to map

KenBuja — Fri, 18 Dec 2015 18:42:28 GMT

Were you looking for something like these?

Re: connect to on (layer-add-result)

Re: layers-add-result event not triggered if error encountered loading a layer

Re: Example of checking layer validity before adding to map

TracySchloss — Fri, 18 Dec 2015 19:08:00 GMT

Those are the ones!

The first one gave me the error, but didn't tell me which layer is was from (and I have 11 layers!). The 2nd one told me both the error and the layer it came from.