You can access the featureLayer that the feature has come from by using the layer property: result.feature.layer
AGSFeatureLayer *featureLayer = (AGSFeatureLayer *)result.feature.layer;
you can just cast itAGSFeatureLayer *featureLayer = (AGSFeatureLayer *)result.feature.layer;
for (AGSIdentifyResult* result in results) { ... // Retrieve attachment int objectId = -99; for (AGSFeatureLayer* currentFeatureLayer in self.featureLayerArray) { objectId = [currentFeatureLayer objectIdForFeature:result.feature]; NSLog(@"objectID : %d", objectId); }