2014/10/15 下午 10:12:20

iphone Programming Glossary: oldlocat

http://stackoverflow.com/questions/3093919/corelocation-incorrect-distances

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.. void locationManager CLLocationManager manager didUpdateToLocation CLLocation newLocation fromLocation CLLocation oldLocation test that the horizontal accuracy does not indicate an invalid measurement if newLocation.horizontalAccuracy 0 return.. locationAge newLocation.timestamp timeIntervalSinceNow NSLog @ time d locationAge if locationAge 5.0 return self.oldLocat oldLocation self.newLocat newLocation double latDegrees newLocation.coordinate.latitude NSString lat NSString stringWithFormat..

Corelocation framework does not produce accurate distances

http://stackoverflow.com/questions/3118773/corelocation-framework-does-not-produce-accurate-distances

@interface iPacometerViewController UIViewController CLLocationManager locationManager CLLocation oldLocat CLLocation newLocat IBOutlet UILabel distanceLabel @property nonatomic assign IBOutlet UILabel distanceLabel @property nonatomic.. distanceLabel @property nonatomic retain CLLocationManager locationManager @property nonatomic retain CLLocation oldLocat @property nonatomic retain CLLocation newLocat void computeDistanceFrom CLLocation oldL tO CLLocation newL @end iPacometerViewController.m.. @implementation iPacometerViewController static double distance 0.0 @synthesize locationManager @synthesize oldLocat @synthesize newLocat @synthesize distanceLabel Implement viewDidLoad to do additional setup after loading the view typically..