当我尝试拖动图钉时,它不会移动。当我触摸它时,它会变暗。但是,它永远不会抬起,也永远不会移动。
这是我的注释类的头文件:
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <Parse/Parse.h>
@interface GeoPointAnnotation : NSObject <MKAnnotation>
- (id)initWithObject:(PFObject *)aObject;
@property (nonatomic, readwrite, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, readonly, copy) NSString *title;
@property (nonatomic, readonly, copy) NSString *subtitle;
- (void)setCoordinate:(CLLocationCoordinate2D)newCoordinate;
@end
这是我在视图控制器中创建注释的地方:
- (void)updateMap
{
[self.mapView removeAnnotations:self.mapView.annotations];
PFGeoPoint *geoPoint = [self.post location];
// center the map around the geopoint
[self.mapView setRegion:MKCoordinateRegionMake(
CLLocationCoordinate2DMake(geoPoint.latitude, geoPoint.longitude),
MKCoordinateSpanMake(0.01, 0.01)
)];
GeoPointAnnotation *annotation = [[GeoPointAnnotation alloc] initWithObject:self.post.object];
[self.mapView addAnnotation:annotation];
}
// from Geolocations by Parse
#pragma mark - MKMapViewDelegate
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
static NSString *GeoPointAnnotationIdentifier = @"RedPin";
MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:GeoPointAnnotationIdentifier];
if (!annotationView) {
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:GeoPointAnnotationIdentifier];
annotationView.pinColor = MKPinAnnotationColorRed;
annotationView.canShowCallout = YES;
annotationView.draggable = YES;
annotationView.animatesDrop = YES;
}
return annotationView;
}
有任何想法吗?