topic Re: Callout and Attachment in ArcGIS Runtime SDK for iOS Questions

Callout and Attachment

MiraMuliati — Wed, 05 Oct 2011 14:02:14 GMT

Hi, I am new to ArcGIS API for IOS.

Currently, I am working on a project that show a callout and related attachment on feature layer. My application has some active featureserver layers. I perform identify task on the mapserver related to those featureserver. When I get AGSIdentifyResult on didExecuteWithIdentifyResults function, How do I know which featureserver the result.feature come from?

Re: Callout and Attachment

EddieJesinsky — Wed, 05 Oct 2011 14:19:37 GMT

http://help.arcgis.com/en/arcgismobile/10.0/apis/iOS/2.0/reference/interface_a_g_s_graphic.html

You can access the featureLayer that the feature has come from by using the layer property: result.feature.layer

Re: Callout and Attachment

MiraMuliati — Wed, 05 Oct 2011 14:50:54 GMT

You can access the featureLayer that the feature has come from by using the layer property: result.feature.layer

Thx, Eddie. What i have in my mind is i will call queryAttachmentInfosForObjectId on the feature layer related to AGSIdentifyResult in didExecuteWithIdentifyResults.

result.feature.layer returns AGSGraphicsLayer. How could i get AGSFeatureLayer related to this?

Re: Callout and Attachment

EddieJesinsky — Fri, 10 Dec 2021 20:28:51 GMT

you can just cast it

AGSFeatureLayer *featureLayer = (AGSFeatureLayer *)result.feature.layer;

Re: Callout and Attachment

MiraMuliati — Fri, 10 Dec 2021 20:28:53 GMT

you can just cast it

AGSFeatureLayer *featureLayer = (AGSFeatureLayer *)result.feature.layer;

Oh, Ok! I will give it a try. Thx again Ed.. 🙂

Re: Callout and Attachment

MiraMuliati — Fri, 10 Dec 2021 20:28:56 GMT

I got exception when casting AGSGraphicLayer to AGSFeatureLayer and call objectIdForFeature on casted AGSFeatureLayer. According to API reference, AGSFeatureLayer is subclass of AGSGraphicLayer. Is it possible to cast superclass to subclass?

Thus, I save all active feature layer in featureLayerArray and in didExecuteWithIdentifyResults i have :

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);
        }

The problem is i always get objectID = 0. Why?