When to query AGSGDBFeatureServiceTable?

KyleDunaway

After I have set an AGSGDBFeatureServiceTable, and invoked the loadCompletion block, I set the delegate and add the layer to my mapView.

Inside the delegate layerDidLoad method, I receive confirmation the layer did load.

Then I query the AGSGDBFeatureServiceTable for features, and get mixed results.  Sometimes I get all the features, 5 total, and other times I get 0.

The documentation led me to believe that layerDidLoad is what I should be waiting for but it looks like that isn't it.  I can't seem to find what exactly I should be waiting for to query the service.

Any ideas?

MengyiGuo

The Query should be executed after layer is loaded. That is to say, LayerDidLoad is the method you are looking for: arcgis-runtime-samples-ios/RootViewController.swift at master · Esri/arcgis-runtime-samples-ios · GitHub

Before that, you want to make sure that you have your layer created with your AGSGDBFeatureServiceTable and added to the map, just like this:

let featureServiceTable = AGSGDBFeatureServiceTable(serviceURL: url, credential: weakSelf.gdbTask.credential, spatialReference: weakSelf.mapView.spatialReference)

let featureTableLayer = AGSFeatureTableLayer(featureTable: featureServiceTable)

featureTableLayer.delegate = weakSelf

weakSelf.mapView.addMapLayer(featureTableLayer)

If it doesn't work for you, would you like to provide your code?