5
上我想我的标注地图MKPointAnnotation
,像这样:MKAnnotationView没有显示出来的地图
- (void)viewDidLoad
{
NSLog(@"RootViewController viewDidLoad");
[super viewDidLoad];
CLLocationCoordinate2D coord =
CLLocationCoordinate2DMake(54.903683,23.895435);
MKPointAnnotation *toyAnnotation = [[MKPointAnnotation alloc] init];
toyAnnotation.coordinate = coord;
toyAnnotation.title = @"Title";
toyAnnotation.subtitle = @"Subtitle";
[mapView addAnnotation:toyAnnotation];
[toyAnnotation release];
}
- (MKAnnotationView *)mapView:(MKMapView *)m
viewForAnnotation:(id <MKAnnotation>)annotation
{
NSLog(@"RootViewController mapView: viewForAnnotation:");
NSLog(@"%@",annotation);
MKAnnotationView *pin = [[MKAnnotationView alloc]
initWithAnnotation:annotation
reuseIdentifier:nil];
pin.enabled = YES;
pin.canShowCallout = YES;
return [pin autorelease];
}
针没有出现在地图上。 RootViewController
是mapView
委托,因此mapView:viewForAnnotation:
方法被调用:
2011-11-24 15:04:03.808 App[2532:707] RootViewController mapView: viewForAnnotation:
2011-11-24 15:04:03.810 App[2532:707] <MKPointAnnotation: 0x1885c0>
什么我做错了,如何解决这个问题?