core-location

My app uses CLLocationManager to get location updates from the device. I had assumed that when the device was in Airplane Mode, I would not get location updates. But I do. The reason I assumed this is because Apple says that Airplane mode turns off Wifi, Cellular, Bluetooth, and GPS. See: http://support.apple.com/kb/ht1355 So, how is it that I'm getting a location update with a coordinate that seems reasonable? I've developed an app that heavily uses the user location, so I had to check this and other situations. I've learned that when all the services are off (Bluetooth, Wi-Fi, Cell Data)

What is the best way to calculate the distance between two points/Or we can say while we walk calculate distance traveled using accelerometer? My main question is that i'm working on an application in which i need to count distance using two locations but sometimes the core locations fails to update location so at that time how do i calculate the distance traveled? Dave DeLong You can't even get an accurate measurement of velocity from the accelerometer , so you're definitely not going to be able to get an accurate measure of distance traveled. 来源： https://stackoverflow.com/questions/2115288

I want the actual country code of the users phone number without prompting the user for Location Permission. How do I get it? Here is the code I use to get the MCC and MNC CTTelephonyNetworkInfo *networkInfo = [[CTTelephonyNetworkInfo alloc] init]; CTCarrier *carrier = [networkInfo subscriberCellularProvider]; NSString *mcc = [carrier mobileCountryCode]; NSString *mnc = [carrier mobileNetworkCode]; I get MCC - 310 and MNC - 410 which corresponds to AT&T USA. But what I want is '+1' the country code dialing for the user. Alternatively, Is it possible to do it with NSLocale? Try this NSLocale

In certain cases, cached values are immediately returned when starting a location service. Any location with a time interval older than this value will be considered invalid. @property (nonatomic, assign) NSTimeInterval maximumElapsedTimeForCachedLocation Declared In UABaseLocationProvider.h Do any of you know how to use this maximumElapsedTimeForCachedLocation in Core Location for removing the cache value of the old location? 来源： https://stackoverflow.com/questions/12909910/iphone-maximumelapsedtimeforcachedlocation-used-to-remove-cache-value-of-core-l

I frequently use the distanceFromLocation method for CLLocation objects to get their distance from other locations. Enumerating through an array of CLLocations, I then compare each to my reference location using this method. I'm curious to know the processing/memory implications for using distanceFromLocation , especially for a large number of CLLocation objects in succession. How does this method work - does it connect to the server to get the data, or does it calculate the distance based on some mathematical formula, such as the Haversine Formula ? Is there a more efficient method to compare

I can not get startMonitoringForRegion to consistently add regions. int i =0; for(Deals *d in deals){ NSLog(@"deal addRegionsInDealsArray %@",d.deal_id); if (d.latitude != NULL && d.longitude!=NULL && ![d.latitude isEqualToNumber:[NSNumber numberWithInt:0 ]] && ![d.longitude isEqualToNumber:[NSNumber numberWithInt:0 ]]) { CLLocationCoordinate2D dl = CLLocationCoordinate2DMake( [d.latitude doubleValue], [d.longitude doubleValue]); //NSLog(@"Lat addRegionsInDealsArray %@",d.latitude); CLRegion * clr = [[CLRegion alloc] initCircularRegionWithCenter:dl radius:radius identifier:d.deal_id];