click on button in MKAnnotationView - iphone

Question

I m working on an app using MKMapView
there's some annotation and when u click on the annotation image , details are shown
for that i ve build my custom #interface Annotation : NSObject and added a boolean value "bClicked"
now I want the user to be able to click on a detail button inside the detailview but the code i ve made is not working :
#pragma mark - MKMapViewDelegate
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
MKAnnotationView *annotationView = nil;
int index = 0;
BOOL bFound = FALSE;
for (int i=0;i<[shopAnnotations count];i++)
{
if (annotation == [shopAnnotations objectAtIndex:i])
{
index = i;
bFound = TRUE;
break;
}
}
if (bFound==FALSE)
{
//ADLog(#"bFound FALSE annotation %p",annotation);
return annotationView; // <-- nil
}
Annotation *shopAnnotation = [shopAnnotations objectAtIndex:index];
annotationView = [_mapView dequeueReusableAnnotationViewWithIdentifier:shopAnnotation.identifier];
if (!annotationView)
annotationView = [[[MKAnnotationView alloc] initWithAnnotation:shopAnnotation reuseIdentifier:shopAnnotation.identifier] autorelease];
for (UIView*view in annotationView.subviews)
{
[view removeFromSuperview];
}
annotationView.image = shopAnnotation.Image;
annotationView.alpha = 1.0f;
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
annotationView.userInteractionEnabled = YES;
if (shopAnnotation.bClicked==TRUE)
{
UIView *detailView = [[UIView alloc ] initWithFrame:CGRectMake(0, -50, 290, 56)];
detailView.userInteractionEnabled = YES;
detailView.superview = annotationView;
[detailView release];
UIImageView *bg = [[UIImageView alloc ] initWithImage:[UIImage imageNamed:#"bulle_carte.png"]];
[bg setFrame:CGRectMake(0, 0, 290, 56)];
bg.superview = detailView;
[bg release];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(250, 3, 35, 35)];
[button setImage:[UIImage imageNamed:#"fleche_bleue_d.png"] forState:UIControlStateNormal];
button.tag = [shopAnnotation.identifier intValue];
[button addTarget:self action:#selector(btnDetailPressed:) forControlEvents:UIControlEventTouchUpInside];
button.superview = detailView;
button.userInteractionEnabled = YES;
[annotationView setRightCalloutAccessoryView:detailView];
}
return annotationView;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#"calloutAccessoryControlTapped");
}
-(void)btnDetailPressed:(id)sender
{
NSLog(#"btnDetailPressed");
}
when I click on the button or inside the DetailView, btnDetailPressed or calloutAccessoryControlTapped are not called/triggered.
Any suggestions?

Answer 1

Use the MKMapViewDelegate's method mapView:didSelectAnnotationView::
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[YOUR_CUSTOM_CLASS class]]) {
//customize it
}
}
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
if ([view isKindOfClass:[YOUR_CUSTOM_CLASS class]]) {
//do something
}
}
Apple's doc