core-location

Is it possible to call alert "Allow to use current location" manually when using CoreLocation framework? Ortwin Gentz No, it's automatically displayed when the app accesses Core Location. If the user rejects it, it's displayed a second time at the next launch, then it keeps quiet and isn't shown anymore. See this answer how to detect if the user rejected the request . 来源： https://stackoverflow.com/questions/3749648/is-it-possible-to-call-alert-allow-to-use-current-location-manually

I have a need to store the current location to 'disk' on the iphone if the application I'm writing is terminated. Then, when the app starts again, I want to restore this information. However, the CLLocation coordinate property is read only. What can I do to save this information between program invocations (and reapply it to a CLLocation object)? You could use NSDefaults to store it. Something like #define kLocationLat @"LOCATION_LAT" #define kLocationLng @"LOCATION_LNG" // Store the location [[NSUserDefaults standardUserDefaults] setDouble:location.coordinate.lat forKey:kLocationLat]; [

I have a quick question, does the core location in iOS 4.3.2 automatically use assisted gps or is this an option you need to choose. I am working with the GPS and I recon that the settle time before finding a good accuracy(below 10 meters) is rather long - a few minuts. Regards Bjarke It's all automatic. The best you can do is check the altitude, which is undefined when a GPS fix is not available yet. edit: see http://developer.apple.com/library/mac/#documentation/CoreLocation/Reference/CLLocation_Class/CLLocation/CLLocation.html if verticalAccuracy < 0, altitude is invalid (from which you can

I am developing an application which computes the distance traveled by the user. I am using CLLocationManager class to do so, but I am getting the cached data initially and also the distance variable is increasing at a sudden rate. Please help me out... I have used the following code.... Note:distance is a static var. here - (void)viewDidLoad { [super viewDidLoad]; //bestEffortAtLocation = nil; oldLocat = [[CLLocation alloc]init]; newLocat = [[CLLocation alloc]init]; locationManager =[[CLLocationManager alloc]init]; locationManager.delegate = self; locationManager.distanceFilter =