CLLocation EXC_BAD_ACCESS

Question

我在尝试访问CLLocation时遇到错误，请问您能解释原因吗？

CLLocation *currentLocation; 
@property (nonatomic, retain) CLLocation *currentLocation; 

我geeting反馈用于从所述位置管理器的位置：

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { 

    if (newLocation != nil) { 
     currentLocation = newLocation; 
     NSLog(@"locationManager: %@", currentLocation); 
    } 
} 

的LocationManager：< 36.45307493， 28.22220462> +/-100.00米（速度-1.00 MPS /当然-1.00）@ 9/2/11 10:14:58 π.μ. GMT + 02：00

，但是当我试图访问从DidSelectAnnotationView currentLocation我得到EXC_BAD_ACCESS：

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view { 

    NSLog(@"current Location: %@", currentLocation); 

} 

能否请您解释一下为什么我不能访问它？

非常感谢！

Answer 1

您不保留位置。这样做：

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { 

    if (newLocation != nil) { 
     self.currentLocation = newLocation; /// The change is here 
     NSLog(@"locationManager: %@", currentLocation); 
    } 
}