我已经成功地在用户位置的点击事件上显示了标题，但我无法让它为我自己的自定义注释工作。我已经尝试在其上设置标题，但它明确但不起作用，我该如何实现？
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
MKPinAnnotationView *userMarkerView = nil;
PayMarkerAnnotationView *payMarkerView = nil;
if(annotation != mapView.userLocation)
{
payMarkerView = (PayMarkerAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"markerView"];
if(payMarkerView == nil) {
payMarkerView = [[PayMarkerAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"markerView"];
}
payMarkerView.annotation = annotation;
return payMarkerView;
}
else {
[mapView.userLocation setTitle:@"You are here"];
return userMarkerView;
}
}
班级：
@interface PaymentMarker : NSObject <MKAnnotation> {
NSString* type;
NSString* address;
float latitude;
float longitude;
NSString* title;
}
@property (nonatomic, copy) NSString* address;
@property (nonatomic, copy) NSString* type;
@property (nonatomic) float latitude;
@property (nonatomic) float longitude;
@property (nonatomic, copy) NSString* title;
//MKAnnotation
@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
@end
- (id)initWithAnnotation:(id <MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier {
if(self = [super initWithAnnotation:annotation reuseIdentifier:reuseIdentifier]) {
self.backgroundColor = [UIColor clearColor];
NSString* imageName;
if ([annotation isMemberOfClass:[PaymentMarker class]])
{
PaymentMarker *pm = (PaymentMarker *)self.annotation;
if([pm.type isEqualToString:@"nzpost"]) {
imageName = @"icon-map-post.png";
} else {
imageName = @"icon-map-incharge.png";
}
self.image = [UIImage imageNamed:imageName];
}
}
return self;
}