我正在尝试创建一个新的 CLLocation 子类。这是骨架:
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
@interface JFLocation : CLLocation {
}
@end
#import "JFLocation.h"
@implementation JFLocation
@end
当我建立课程时,我收到了这个错误:
Undefined symbols:
".objc_class_name_CLLocation", referenced from:
.objc_class_name_JFLocation in JFLocation.o
ld: symbol(s) not found
任何的想法??谢谢!!