CODEWITHSUNDEEP
iphoneiosios5
Soumalya Banerjee
Soumalya Banerjee

Reputation: 1966

Is it possible to get distance from user location to specific location in background in IOS?

I need to calculate distance from user location to specific location, when the app is in background, and get a local notification based on that.

Background location tracking is totally possible, and I have already done that, but is it possible to execute a block of code, containing some condition checking and based on that update and get a local notification?

I am not getting any proper solution. Is there any way to do so?

Can you help me please?

Upvotes: 0

Views: 163

Answers (3)

Michael
Michael

Reputation: 1213

Yeah, you can definitely do that. I'm doing it in an app right now. Use significant location changes, or regions, as previously suggested, to keep the pressure off the users battery as much as possible.

We observe regions (and significant location changes where regions are not supported by the device) then check a few things and fire off a local notification if needs be.

We started with a basic prototype to prove the concept and I highly recommend that approach as a way to get familiar with the location and notification frameworks.

Upvotes: 1

Rob Napier
Rob Napier

Reputation: 299545

Start with the Location Awareness Programming Guide. Most everything you need to know is in there. (Most things that aren't in there are simply impossible for an AppStore app.) See also Tracking the User's Location in the iOS App Programming Guide.

The best tool for what you're describing is likely "Shape-Based Regions." You can basically draw a box on a map and say "when the user enters or leaves this box, let me know." If at all possible, this is the tool you should use. It has the least impact on battery life.

If you absolutely cannot solve the problem any other way, it is legal to request background location delivery with startUpdatingLocation (and the appropriate background mode in Info.plist; see the above docs). An app that tracks your route while you hike would be be appropriate for this kind of setup. But you should avoid it if at all possible since it's a major battery drain.

Upvotes: 1

James Paolantonio
James Paolantonio

Reputation: 2194

You will want to update for significant locations in the background: http://mobile.tutsplus.com/tutorials/iphone/ios-multitasking-background-location/. Then you will want to create a location notification based on that.

My issue is that I am not sure if you can create a local notification in the background.

Upvotes: 0

Related Questions