IOS swift - Webmap features access

MohamedMuzammil

Hi,

I have the web map that contains the map service and feature service.

1. I want to get the feature count and feature details based on map extent

2. How to apply filter/search for the features in the webmap

Please provide the example to access from web map. How to read and apply.

Thanks for your support

GarimaDhakal

Hi Mohamed Muzammil‌,

We have the following samples that might help you to get started. 

1. Feature layer query

2. Query a map image sublayer

3. Statistical query

Queries are performed on an AGSServiceFeatureTable. If a map is created from a portal item (webmap),  AGSServiceFeatureTable can be retrieved from the map as follows:

• Get a list of operational layers from a map using the operationalLayers property on an AGSMap and filter those layers using layerId to get the required feature layer and map image layer. 
• AGSFeatureLayer may expose a AGSFeatureTable through a featureTable property. The AGSFeatureTable can be casted to AGSServiceFeatureTable.
• Sublayers of AGSArcGISMapImageLayer may expose a AGSServiceFeatureTable through a table property.  

I hope this helps. Please let me know if you have further questions. 

Thank you,

Garima