Using GPS on a custom map

Island Jim · 04-01-2010, 12:16 PM

I have a new project where we want to show a custom map of a 35 acre campus. The map we need to use already exists and we want it to be part of the UI to click on a sector and go to information about the items in that area.

We want to also indicate the user's location with a pin using GPS coordinates and show this on top of the custom map. It is not viable to use the stock Google maps as the image. Is it possible to do this? If so how? I have noticed that a couple of other folks on this forum have asked similar questions months ago but there were no responses. I have also not seen an example where this has been done.

I hope someone knows the trick, or could even show me some apps where this has been done. If this is not possible, I'd love to know so we could reset client expectations.

**smithdale87** · 04-01-2010, 01:36 PM

You can use CLLocationManager and just register for location updates so that you will have the lat/long of the user at all times.

Then you'd need to figure out what the lat/long boundaries of your 35acre map are.

Once you have all of this, adding a pin is trivial, as well as performing some event when the pin is selected.

Island Jim · 04-01-2010, 01:51 PM

This sounds straight forward, thanks for the tip. Are there some apps that you could point me to that might showcase this feature. I would love to see how others may have implemented it.

Thanks,

Jim

BostonMerlin · 04-27-2010, 04:44 PM

Quote:

Originally Posted by Island Jim

This sounds straight forward, thanks for the tip. Are there some apps that you could point me to that might showcase this feature. I would love to see how others may have implemented it.

Thanks,

Jim

You might take a look at any of the topographic maps on the app store. most are using custom image/map tiles to generate custom maps.

Hope that helps
John

mumf83 · 08-09-2010, 02:52 AM

I have a project very similar by having a custom map and I need to use the iPhones GPS to find out where the user is.

I'm a bit confused on how to find the boundaries of the area? Will I have to record every lat/long coordinate with in the area, or is this all handled when you find the boundaries? How would I find the coordinates of the boundary in the first place? Also, what API would handle this, so I can add pins and locate where the user is currently?

Any pointers would be greatly appreciated.