CLLocation子类化错误 [英] Error on CLLocation subclassing

问题描述

我正在尝试创建一个新的CLLocation子类。这是骨架：

I'm trying to make a new CLLocation subclass. This is the skeleton:

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>

@interface JFLocation : CLLocation {

}

@end


#import "JFLocation.h"


@implementation JFLocation

@end

在构建类时遇到此错误：

When I build the class I'm getting this errors:

Undefined symbols:
  ".objc_class_name_CLLocation", referenced from:
      .objc_class_name_JFLocation in JFLocation.o
ld: symbol(s) not found

任何想法？？？谢谢！！

Any Idea?? Thank you!!

推荐答案

您应将 CoreLocation.framework 添加到

在Xcode项目中右键单击框架。单击添加> 现有框架...

Right click on "Frameworks" in the Xcode project. Click Add > Existing Frameworks...

默认情况下，路径应为：

By default the path should be:

/Developer/Platforms/iPhoneOS.plarform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks/CoreLocation.framework

这篇关于CLLocation子类化错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！