topic LayerDefinitions in ArcGIS Runtime SDK for iOS Questions

LayerDefinitions

ChrisMahlke — Sun, 12 Dec 2021 02:07:25 GMT

This question is concerning layer definitions.

I follow the sample code snippets posted at the very bottom of this page:

http://help.arcgis.com/en/arcgismobile/10.0/apis/iOS/1.8/concepts/index.html#//00pw0000004m000000.htm

Here is my code:

AGSDynamicMapServiceLayer *dyn = [[AGSDynamicMapServiceLayer alloc] initWithURL:[NSURL URLWithString:@"http://server.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_1990-2000_Population_Change/MapServer"]];
 
int layerID = 3; 
NSString *defString = @"NAME = 'Middlesex County'";
AGSLayerDefinition *layerDef = [AGSLayerDefinition layerDefinitionWithLayerId:layerID definition:defString];
dyn.layerDefinitions = [NSArray arrayWithObject:layerDef];
 
[mapView removeMapLayerWithName:@"previous layer"];
self.fbMapServiceUIView = [mapView addMapLayer:_dyn withName:@"some name"];

Instead of just 4 counties being loaded, the entire choropleth map is being loaded as though there were no layer definitions being applied.

Has anyone out there successfully applied layer definitions? Any suggestions?

Thanks...

Re: LayerDefinitions

NimeshJarecha — Fri, 09 Sep 2011 17:09:31 GMT

Chris,

The layer you are using is a Tiled layer not a Dynamic layer. Hence, it's not being honored.

Regards,
Nimesh

Re: LayerDefinitions

MuruganandhamKuppan1 — Wed, 07 Mar 2018 13:12:11 GMT

Hi Nimesh Jarecha‌,

I didn't find the `AGSLayerDefinition` class in latest runtime SDK for iOS. How to accomplished this in Latest arcgis runtime SDK for iOS.

Regards,

Re: LayerDefinitions

NimeshJarecha — Wed, 07 Mar 2018 16:57:46 GMT

For latest SDK (ver 100.x) property is renamed to `definitionExpression` and is available on sub layers, feature layer and service feature table. Please see below image.

The sample is available at arcgis-runtime-samples-ios/arcgis-ios-sdk-samples/Features/Feature layer definition expression at master · Esri/arcgis-r…

Hope this helps!

Regards,

Nimesh