Iphone CLLocation获取EXC\u错误\u访问

我在尝试访问CLLocation时出错，您能解释一下原因吗

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

我正在从位置经理那里获得位置反馈：

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

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

位置经理：+/-100.00m（速度-1.00mps/航向-1.00）@9/2/11 10:14:58 π.μ. 格林尼治时间+02:00

但当我试图从DidSelectAnnotationView访问currentLocation时，我获得了EXC\u BAD\u访问权限：

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

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

}

你能解释一下为什么我不能访问它吗

---

非常感谢

您没有保留该位置。像这样做：

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

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

---

您没有保留该位置。像这样做：

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

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