topic Re: How do I set default Extents on iOS application in ArcGIS Runtime SDK for iOS Questions

How do I set default Extents on iOS application

KevinJordan2 — Mon, 07 Nov 2011 18:43:57 GMT

We have managed to successfully create and view maps on the iPhone and iPad but when I open them using the standard basemap we see the whole world. Our map is saved in Arcmap at the set extents of our data but we lose that zoomed extent in the iPhone map. How do I set it to default to the extent of our data?

Re: How do I set default Extents on iOS application

RussRoberts — Mon, 07 Nov 2011 19:14:28 GMT

On the ArcGIS for iOS application the extent can be set when you create the map on your mobile content server.ArcGIS Online grabs the extent that the map view you are currently at when you save the map to your online content.

Hope this helps
Russ

Re: How do I set default Extents on iOS application

KevinJordan2 — Mon, 07 Nov 2011 19:30:13 GMT

How do I set the extents in the mobile content server?

Re: How do I set default Extents on iOS application

KevinJordan2 — Mon, 07 Nov 2011 19:41:47 GMT

Let me rephrase that. I see the section on the mobile content server when you are creating a new application that I assume you use to specify the extents. My question is how do I know what to set it to and what format does it need to be in?

Re: How do I set default Extents on iOS application

NimeshJarecha — Tue, 08 Nov 2011 15:14:32 GMT

It has to be envelope coordinates (xmin,ymin,xmax,ymax) in the base layer's spatial reference.

Hope this helps!

Regards,
Nimesh

Re: How do I set default Extents on iOS application

KevinJordan2 — Tue, 08 Nov 2011 17:58:36 GMT

Still not working. Here's what I did. I opened the mxd and went to the layer with the biggest extents. I right clicked and went to layer properties and the clicked on the Source Tab to get the Left, Right, Top, Bottom Coordinates. I keyed them into the extents line on the Mobile Content Server using the format mentioned above, xmin,ymin,xmax,ymax. Everything appeared to work, or at least I didn't get any errors. But when I open the map on the iPhone it is still zooming all the way out. Did I do something wrong?

Re: How do I set default Extents on iOS application

KevinJordan2 — Wed, 09 Nov 2011 14:40:36 GMT

So where do I get the envelope coordinates (xmin,ymin,xmax,ymax)?

Re: How do I set default Extents on iOS application

NimeshJarecha — Wed, 16 Nov 2011 18:35:58 GMT

The envelope coordinates MUST be in BASE LAYER's spatial reference. Is it the case?

Regards,
Nimesh

Re: How do I set default Extents on iOS application

DarrenMackiewicz — Tue, 22 Nov 2011 12:46:21 GMT

Nimesh,
The iOS API 2.1 says:

"The envelope property on AGSMapView has been deprecated and replaced by visibleArea to take into account map rotation."

When I change to :

AGSEnvelope *env = self.mapView.visibleArea;

I get this error:

Incompatible pointer types initializing 'AGSEnvelope *' with an expression of type 'AGSPolygon *'

Re: How do I set default Extents on iOS application

NimeshJarecha — Tue, 22 Nov 2011 14:20:54 GMT

Darren,

The original question of this post is different than your question and you should have created a new post.

The visibleArea returns AGSPolygon and you are trying to save it as AGSEnvelope. Hence the error. If you want envelope then change code line as following,

AGSEnvelope *env = self.mapView.visibleArea.envelope;

Hope this helps!

Regards,
Nimesh