Question

我有一个产生长，拉特的单身人士。我可以记录它们但希望能够得到它们。我做错了什么？

singleton.h

@interface ClassLocationManager : NSObject <CLLocationManagerDelegate> {

    NSString *lat;
    NSString *longt;
}

@property (nonatomic, strong) CLLocationManager* locationManager;
@property (nonatomic, retain) NSString *lat;
@property (nonatomic, retain) NSString *longt;

+ (ClassLocationManager*) sharedSingleton;

singleton.m - long，lat字符串在 - （id）init

中给出值

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
    int degrees = newLocation.coordinate.latitude;
    double decimal = fabs(newLocation.coordinate.latitude - degrees);
    int minutes = decimal * 60;
    double seconds = decimal * 3600 - minutes * 60;
    lat = [NSString stringWithFormat:@"%d° %d' %1.4f\"", degrees, minutes, seconds];
    NSLog(@" Current Latitude : %@",lat);

    degrees = newLocation.coordinate.longitude;
    decimal = fabs(newLocation.coordinate.longitude - degrees);
    minutes = decimal * 60;
    seconds = decimal * 3600 - minutes * 60;
    longt = [NSString stringWithFormat:@"%d° %d' %1.4f\"", degrees, minutes, seconds];
    NSLog(@" Current Longitude : %@",longt);
    [manager stopUpdatingLocation];

}

codethatcallsthem.m

NSString *formatted3 = [[ClassLocationManager sharedSingleton] longt];
NSString *formatted4 = [[ClassLocationManager sharedSingleton] lat];

非常感谢。

Answer 1

您的房产与您的ivar名称不符..

让ivars离开并使用自动创建的（_longt，_lat）
或者更好的是说self.longt = and self.lat =
OR bad：使用@synthesize使属性使用现有的ivars

- 我会选择2。

从Singleton获取字符串

1 个答案: