topic Re: Promise not working in arcgis js 4.19 in ArcGIS JavaScript Maps SDK Questions

Promise not working in arcgis js 4.19

RitikaManderwal — Mon, 28 Jun 2021 05:12:08 GMT

i am trying to promise in arcgis js 4.19 .

code :

promise.all(layerPromises)

.then(()=>{

console.log("hello")

})

**layerPromises is an array of promises**

when i run this code in 4.17 it is working fine but with 4.19 not able to exceute it

Re: Promise not working in arcgis js 4.19

ReneRubalcava — Mon, 28 Jun 2021 15:28:49 GMT

Do you have a snippet showing what layer promises is doing? Are they layer.loads() or queries? If you add a .catch() what is the error message? You wouldn't happen to be using Angular are you?

Re: Promise not working in arcgis js 4.19

RitikaManderwal — Wed, 30 Jun 2021 11:19:00 GMT

hi,

i am not using angular it is javascript.

layerpromises are layer.loads().it is checking for everylayer loads successfully or not.

const fdwh = (view,featureLayer)=>{

try{

return new Promise((resolve,reject)=>{

view.whenLayerView(featureLayer).then((layerview) => {

watchutil.whenFalseOnce(layerView,"updating").then(()=>{

resolve();

}

for(var i =0;i<featurelayerarray.length;i++)

{

layerPromises.push(fdwh (view,featurelayerarray[i]))

}

promise.all(layerPromises)

.then(()=>{

console.log("hello")

})