topic Re: Getting layer ID of table in dynamic map service in ArcGIS Runtime SDK for iOS Questions

Getting layer ID of table in dynamic map service

RobertMartin2 — Fri, 09 Sep 2011 23:17:08 GMT

Hello,

I am trying to retrieve the layer ID of a non-spatial table in a dynamic map service. At the start of my app I am creating a dictionary of layer names and IDs by looping over AGSMapServiceLayerInfo objects. The table, however, is not included. (I imagine this is because it has no graphic component in the map view.) Is there any built-in property or method I could use for this?

Thanks in advance,
Robert

Re: Getting layer ID of table in dynamic map service

NimeshJarecha — Sat, 10 Sep 2011 02:21:01 GMT

Yes, you should use AGSMapServiceInfo's tableInfos property which provides an array of AGSMapServiceTableInfo objects. You'll get table id from there.

Regards,
Nimesh

Re: Getting layer ID of table in dynamic map service

RobertMartin2 — Sat, 10 Sep 2011 03:00:02 GMT

Doh! That was easy. Thank you Nimesh.

Re: Getting layer ID of table in dynamic map service

RickJones — Wed, 26 Oct 2011 16:11:27 GMT

Could I see a snippet of how this is done?

I've tried this:

    AGSDynamicMapServiceLayer* layer = [[AGSDynamicMapServiceLayer dynamicMapServiceLayerWithURL:[NSURL URLWithString:kWaterNetworkURL]] retain];
    layer.visibleLayers = [NSArray arrayWithObjects:[NSNumber numberWithInt:0], [NSNumber numberWithInt:1], [NSNumber numberWithInt:2], [NSNumber numberWithInt:3], [NSNumber numberWithInt:4], [NSNumber numberWithInt:5], nil];
    AGSMapServiceInfo* msi = ((AGSDynamicMapServiceLayer*)layer).mapServiceInfo;
    NSLog(@"Tables belonging to service with 6 layers and 4 tables");
    for (int i=0; i < [msi.tableInfos count]; i++) {
        AGSMapServiceTableInfo* ti = [msi.tableInfos objectAtIndex:i];
        NSLog(@"%d: %@", i, ti.name);
    }
[self.mapView addMapLayer:layer withName:layer.name];

No tables are listed.

Re: Getting layer ID of table in dynamic map service

RickJones — Wed, 26 Oct 2011 16:44:14 GMT

I changed my code to this:

    NSURL *url = [NSURL URLWithString:kWaterNetworkURL];
    AGSMapServiceInfo *msi = [AGSMapServiceInfo mapServiceInfoWithURL:url error:&error];
NSLog(@"Tables belonging to service with 6 layers and 4 tables");
for (int i=0; i < [msi.tableInfos count]; i++) {
   AGSMapServiceTableInfo* ti = [msi.tableInfos objectAtIndex:i];
   NSLog(@"%d: %@", i, ti.name);
}

and it now lists tables.

Re: Getting layer ID of table in dynamic map service

NimeshJarecha — Fri, 28 Oct 2011 20:09:34 GMT

Glad you figured out! 🙂 you were trying to read information before it was available.

Regards,
Nimesh