CODEWITHSUNDEEP
iosobjective-ccllocationmanager
Brandon
Brandon

Reputation: 2171

Location Stops Updating after App Sent to Background

OK, here's a tough one (for me anyway)... My app has a button that checks to see if a user is in close proximity to a business. The button works almost perfectly by doing the following when it is pressed:

Like I mentioned, this works almost perfectly. I can walk towards a business continuously clicking the button as I approach the building and when I get close enough, the alert will tell me that I am less than 100 feet away.

My problem is that the alert displays wrong information if I send the app to the background while I am walking. For example, I open the app from very far away, then I send the app to the background and approach the business, then when I am right next to the business, I bring the app to the foreground and click the button and it says I am more than 100 feet away. Anyone have any ideas on why this might be happening?

In my viewDidLoad Method:

[[NSNotificationCenter defaultCenter] addObserver:self 
selector:@selector(appReturnsActive) name:UIApplicationDidBecomeActiveNotification 
object:nil];

In appReturnsActive Method:

- (void)appReturnsActive{

    locationManagerProfile.delegate = self;
    locationManagerProfile.desiredAccuracy = kCLLocationAccuracyBest;
    [locationManagerProfile startUpdatingLocation];
    [locationManager startUpdatingLocation];
}

Upvotes: 0

Views: 155

Answers (1)

cahn
cahn

Reputation: 1369

To save battery, location updates are stopped when your app goes to background. You can add a value to info.plist to keep your app updated. But you should carefully consider battery usage.

Upvotes: 1

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