update: Xcode 8.3.2 • Swift 3.1 The problem there is because you are always getting the same location over and over again. Try like this: import UIKit import MapKit class ViewController: UIViewController, CLLocationManagerDelegate { @IBOutlet weak var mapView: MKMapView! let locationManager = CLLocationManager() var startLocation: CLLocation! var lastLocation: CLLocation! var startDate: Date! var traveledDistance: Double … Read more
Looking at the below content from the Apple doc, you clearly have 2 alternatives against using significant location changes to wake a app from the background. I have marked in bold the services you can use to relaunch the app if it has been terminated. Using Location Services in the Background Most location services are … Read more
I had a similar error, and is solved now. The issue is declaring locationManager variable locally. Declare it instead as a class variable and make sure it is retained either directly or via property retain (or strong if you use ARC). That solves the problem! The issue was de locationManager variable was released and never … Read more
Your code seems fine to me. Nothing wrong with the calculous. You don’t specify how far off your results are, but you might try tweaking your radian/degrees converters to this: double DegreesToRadians(double degrees) {return degrees * M_PI / 180.0;}; double RadiansToDegrees(double radians) {return radians * 180.0/M_PI;}; If you are getting negative bearings, add 2*M_PI to … Read more
Here is an Objective-C solution CLLocation Category for Calculating Bearing w/ Haversine function which can easily be translated to Swift: func degreesToRadians(degrees: Double) -> Double { return degrees * .pi / 180.0 } func radiansToDegrees(radians: Double) -> Double { return radians * 180.0 / .pi } func getBearingBetweenTwoPoints1(point1 : CLLocation, point2 : CLLocation) -> Double … Read more
While allocating your LocationManager object you can set the distanceFilter property of the LocationManager. Distance filter property is a CLLocationDistance value which can be set to notify the location manager about the distance moved in meters. You can set the distance filter as follows: LocationManager *locationManger = [[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager.distanceFilter = … Read more
If you are using the simulator: Press command + shift + , in Xcode to open the scheme editor Select the Run scheme Go to the Options tab Check ✅ Allow Location Simulation Select a Default Location in the dropdown Selecting None as your Default Location may have caused the problem.