相关疑难解决方法(0)

我正在尝试使用distanceFromLocation:方法来计算我手里拿着iPhone走的总距离.到目前为止,我一直在寻找帮助解决我混乱,不准确和看似随意的结果.在这些代码片段中,theLabel只是我的应用程序界面中的标签对象,distanceMoved是我试图存储我走进的总距离的变量,locMan是在我的@interface文件中声明的位置管理器.

- (void)viewDidLoad
{
   locMan = [[CLLocationManager alloc] init];
   locMan.delegate = self;
   [locMan startUpdatingLocation];
   isInitial = true;
   distanceMoved = 0.0;
   [super viewDidLoad];
}

-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
   distanceMoved += [newLocation distanceFromLocation: oldLocation];
   theLabel.text = [NSString stringWithFormat: @"%f meters", distanceMoved];
}

任何有助于解决我在这里做错的帮助将不胜感激.谢谢!

我正在尝试使用新的iOS 6功能的自定义位置更新,但继续收到此错误:

didFinishDeferredUpdatesWithError:Error Domain = kCLErrorDomain Code = 11"无法完成操作.(kCLErrorDomain error 11.)"

我使用以下代码:

- (DeviceAPI *) init
    {
     locationManager = [[CLLocationManager alloc] init];
     [locationManager setDelegate:self];
     [locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
     [locationManager startUpdatingLocation];
     [locationManager allowDeferredLocationUpdatesUntilTraveled:(CLLocationDistance)100000     timeout:(NSTimeInterval)100000];

    return self;
 }

而这个callback功能:

- (void)locationManager:    (CLLocationManager *)   manager
                        didFinishDeferredUpdatesWithError:(NSError *)error
{
    NSLog(@"didFinishDeferredUpdatesWithError :%@", [error description]);
}

有帮助吗？