topic Re: Basemap Layer & QueryTask in ArcGIS Runtime SDK for iOS Questions

Basemap Layer & QueryTask

AliciaSoto — Fri, 18 Nov 2011 17:23:24 GMT

Hello All,

When editing the JSON file, is it possible for the app to zoom into the result of a "queryTask" if no basemap has been assigned?

I noticed my "queryTasks" wouldn't work until I assigned a basemap in the JSON.

Thanks,

Re: Basemap Layer & QueryTask

AliciaSoto — Sun, 12 Dec 2021 07:39:03 GMT

I've realized that the basemap might not be the issue.

Here are the JSON files for two different mobile apps. The scripts look identical, but are referring to different map services.

The first one will zoom in to a queryTask result, but the second one will only zoom in if you select another basemap(within the app).

This is the one that works

{
    "version" : "1.3",
    "operationalLayers" : [{
        "url" : "http://myserver/ArcGIS/rest/services/maps/iOS_Forum_Test/MapServer",
        "visibility" : true,
        "opacity" : 1,
        "title" : "GIS Layers"
    }],
    "tasks" : {
        "queryTasks" : [{
            "displayField" : "Find Congressional District",
            "name" : "Congressional District",
            "parameters" : [{
                "defaultValue" : "",
                "field" : "CD111FP",
                "helpTip" : "Enter # Here",
                "operator" : "=",
                "prompt" : "Find Congressional District by Number"
            }],
            "url" : "http://myserver/ArcGIS/rest/services/maps/iOS_Forum_Test/MapServer/1",
            "visibleFields" : ["CD111FP","GEOID10","NAMELSAD10","ALAND10"],
            "whereClause" : "{0}"
        }]
    }
}

This one does not work

{
    "version" : "1.3",
    "operationalLayers" : [{
        "url" : "http://myserver/ArcGIS/rest/services/maps/Mobile_AMR/MapServer",
        "visibility" : true,
        "opacity" : 1,
        "title" : "GIS Layers"
    }],
    "tasks" : {
        "queryTasks" : [{
            "displayField" : "DCU_NAME",
            "name" : "DCU Query",
            "parameters" : [{
                "defaultValue" : "",
                "field" : "DCU_NAME",
                "helpTip" : "Enter DCU Name Here",
                "operator" : "=",
                "prompt" : "DCU Query by Name"
            }],
            "url" : "http://myserver/ArcGIS/rest/services/maps/Mobile_AMR/MapServer/0",
            "visibleFields" : ["DCU_NAME","STATUS","DESCRIPTION","NAME"],
            "whereClause" : "{0}"
        }]
    }
}

Re: Basemap Layer & QueryTask

AliciaSoto — Mon, 21 Nov 2011 14:22:06 GMT

Strangely, the 2nd code I posted above will only work if I add an ESRI online basemap. Maybe the zoom to query result is affected by the coordinate system of my operational layer.....

Re: Basemap Layer & QueryTask

RussRoberts — Mon, 21 Nov 2011 16:19:12 GMT

Are you using any basemap layers within your project?
Thanks
Russ

Re: Basemap Layer & QueryTask

AliciaSoto — Mon, 21 Nov 2011 16:24:50 GMT

Are you using any basemap layers within your project?
Thanks
Russ

No. I do not have any basemap layer assigned for either of the 2 codes posted above. That's why I'm confused on why one works and the other doesn't.

Thanks

Re: Basemap Layer & QueryTask

RussRoberts — Mon, 21 Nov 2011 17:11:47 GMT

What projections are they in? and are you viewing this is the latest version of the iOS app?
Thanks
Russ

Re: Basemap Layer & QueryTask

AliciaSoto — Sun, 12 Dec 2021 07:39:05 GMT

The iOS app is up to date.

The coordinate system for the one that works is:

GCS_North_American_1983
Datum: D_North_American_1983

and the one that doesn't work is:

NAD_1983_StatePlane_Texas_South_FIPS_4205_Feet
Projection: Lambert_Conformal_Conic
False_Easting: 984250.000000
False_Northing: 16404166.666667
Central_Meridian: -98.500000
Standard_Parallel_1: 26.166667
Standard_Parallel_2: 27.833333
Latitude_Of_Origin: 25.666667
Linear Unit: Foot_US

GCS_North_American_1983
Datum: D_North_American_1983

Re: Basemap Layer & QueryTask

RussRoberts — Mon, 21 Nov 2011 19:53:46 GMT

I just tried out a couple services.. one in web Mercator and one using the NAD83 / UTM zone 16N projection and the both zoomed to my results. I will try out a service with the same projections that you used for sample code #2.

Russ

Re: Basemap Layer & QueryTask

AliciaSoto — Mon, 21 Nov 2011 20:06:02 GMT

I just tried out a couple services.. one in web Mercator and one using the NAD83 / UTM zone 16N projection and the both zoomed to my results. I will try out a service with the same projections that you used for sample code #2.

Russ

Thank you!

Re: Basemap Layer & QueryTask

RussRoberts — Mon, 21 Nov 2011 20:54:04 GMT

I am able to get it to zoom to the correct level on a map service using the NAD 83 State Plane for Texas South... If you want you can invite me to a group and I can check out the service there.
Cheers
Russ