Iphone 核心位置的委托错误

我建立了自己的位置检索类，如苹果核心位置文档中所述

MyCLControl.h

：

@protocol MyCLControllerDelegate

@required
- (void)locationUpdate:(CLLocation *)location;
- (void)locationError:(NSError *)error;
@end

@interface MyCLController : NSObject <MyCLControllerDelegate, CLLocationManagerDelegate> {
    CLLocationManager *locationManager;
    id <MyCLControllerDelegate> delegate;
}

@property (nonatomic, retain) CLLocationManager *locationManager; 
@property (strong) id <MyCLControllerDelegate> delegate;

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

- (void)locationManager:(CLLocationManager *)manager
       didFailWithError:(NSError *)error;

- (BOOL) connected;
@end

我是这样称呼它的：

- (void)viewDidLoad {
    MyCLController *locationController = [[MyCLController alloc] init];
    locationController.delegate = locationController.self;
    [locationController.locationManager startUpdatingLocation];
}

- (void)locationUpdate:(CLLocation *)location {
    NSLog(@"%@", location);
}

---

我收到一个运行时错误

[MyCLController locationUpdate::]：当它点击
[self.delegate locationUpdate:newLocation]
时，将无法识别的选择器发送到实例

您是否已将

MyCLController

作为自身的委托？你肯定是想让视图成为代理

您还需要使用以下方法检查代理是否支持该方法（即使它是

必需的
）：

@选择器（locationUpdate:newLocation）错误。它给出了预期的
：
。在
newLocation
之后添加
：
为选择器响应提供了一个
未知实例方法
- (void)viewDidLoad {
    MyCLController *locationController = [[MyCLController alloc] init];
    locationController.delegate = locationController.self;
    [locationController.locationManager startUpdatingLocation];
}

- (void)locationUpdate:(CLLocation *)location {
    NSLog(@"%@", location);
}

- (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
           fromLocation:(CLLocation *)oldLocation
{
    if ([self.delegate respondsToSelector:@selector(locationUpdate:)])
    {
        [self.delegate locationUpdate:newLocation];
    }
}