Xcode 尝试对Pin位置进行编码时无法调用“MapAnnotation”
我无法在XCode 4上调用类MapAnnotation。我正在编写代码,允许我在MKMapView中放置pin。我相信我已经输入了正确的代表。以下是我得到的: MillersLocations.hXcode 尝试对Pin位置进行编码时无法调用“MapAnnotation”,xcode,map,mkmapview,android-mapview,Xcode,Map,Mkmapview,Android Mapview,我无法在XCode 4上调用类MapAnnotation。我正在编写代码,允许我在MKMapView中放置pin。我相信我已经输入了正确的代表。以下是我得到的: MillersLocations.h #import <Foundation/Foundation.h> #import <MapKit/MKAnnotation.h> #import <MapKit/MapKit.h> @interface MillersLocations : NSObject
#import <Foundation/Foundation.h>
#import <MapKit/MKAnnotation.h>
#import <MapKit/MapKit.h>
@interface MillersLocations : NSObject <MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
}
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@end
这是我的地图视图视图控制器:
MapViewController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface MapViewController : UIViewController <MKMapViewDelegate> {
IBOutlet MKMapView *mapView;
}
@end
我想知道我是否还没有导入权限类之类的东西。我在谷歌上搜索了一下,似乎找不到地图注释的位置。我需要导入什么才能访问MapAnnotation?在那之前一切都很好
谢谢你的帮助。我只是在学这些东西 是什么让你认为有一个叫做MapAnnotation的类?您的注释类称为MillersLocations。您需要创建该类的实例并调用[mapView addAnnotation:MillerLocationInstance];或者类似的东西。哦,是……我的错。谢谢你的回答!我的大脑仍然处于极度混乱状态。我很感激你的快速回答。
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
@interface MapViewController : UIViewController <MKMapViewDelegate> {
IBOutlet MKMapView *mapView;
}
@end
#import "MapViewController.h"
#import "MillersLocations.h"
@implementation MapViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
//skipping forward
- (void)viewDidLoad
{
[super viewDidLoad];
MKCoordinateRegion store1;
store1.center.latitude = 36.8605679;
store1.center.longitude = -76.2866713;
store1.span.latitudeDelta = 0.1;
store1.span.longitudeDelta = 0.1;
[mapView setRegion:store1 animated:YES];
//this is where I'm trying to put this code in:
MapAnnotation* annotation = [[MapAnnotation alloc] initWithCoordinate:newCoord];
//BUT "MapAnnotation" isn't an option
}