尝试实现CLLocationManager：获取编译时错误

Question

我正在尝试在我的应用中实现CLLocationManager，并且我收到以下编译时错误。

视图控制器的viewDidLoad方法中的代码：

self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;

错误：

_OBJ_CLASS_$_CLLocationManager," referenced from Obj-c-class-ref in AboutLocationViewController.o

_kCLLocationAccuracyBest," referenced from:
-[AboutLocationViewController viewDidLoad] in AboutLocationViewController.o

Symbol(s)not found for architecture arm7
Collect2: Id returned 1 exit status

Answer 1

您可能尚未在Frameworks文件夹中添加CoreLocation.framework。因此，链接器无法找到CLLocationManager类。