unable to add tap gesture to customized calloutView - ios

Question

I have a mapview in my app which needs customized calloutView for every map annotations.
Therefore, I have an XIB file for this customized calloutView.
Here is my code for the map view controller
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view {
CustomCalloutView *calloutView = (CustomCalloutView *)[[[NSBundle mainBundle] loadNibNamed:#"CustomCalloutView" owner:self options:nil] objectAtIndex:0];
[calloutView.layer setCornerRadius:10];
CGRect calloutViewFrame = calloutView.frame;
calloutViewFrame.origin = CGPointMake(-calloutViewFrame.size.width/2 + 15, -calloutViewFrame.size.height);
calloutView.frame = calloutViewFrame;
// some other code such as load images for calloutView
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleSingleTap)];
singleTap.numberOfTapsRequired = 1;
[calloutView addGestureRecognizer:singleTap];
[view addSubview:calloutView];
}
- (void)handleSingleTap{
NSLog(#"it works");
}
However, the handleSingleTap: has never been called. Instead, every tap on the calloutView will only simply dismiss the calloutView. I also tried to add a button on the calloutView, but tap on it will also cause the calloutView dismissing, rather than calling the button action.
Can anyone help?
Update:
I've tried to change the code
[view addSubview:calloutView];
to
[self.view addSubview:calloutView];
which add the customized calloutView into the main container view rather than the mapView.
Then, it works fine with the tap gesture. Therefore, I think the problem should be caused by the mapView, it seems that mapView passes all the touch event on calloutView to itself. Anyone have ideas regarding this?

Answer 1

OK. I worked out the solution finally. We need to have a customized class for the MKAnnotationView to solve this. Here is the code in the .m file
- (UIView*)hitTest:(CGPoint)point withEvent:(UIEvent*)event
{
UIView* hitView = [super hitTest:point withEvent:event];
if (hitView != nil)
{
[self.superview bringSubviewToFront:self];
}
return hitView;
}
- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent*)event
{
CGRect rect = self.bounds;
BOOL isInside = CGRectContainsPoint(rect, point);
if(!isInside)
{
for (UIView *view in self.subviews)
{
isInside = CGRectContainsPoint(view.frame, point);
if(isInside)
break;
}
}
return isInside;
}
Hopefully this can be helpful for others.

Answer 2

You need to modify your tapgesture implemenation & the method called.Have a look & check whether it work or not.
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleSingleTap)];
singleTap.numberOfTapsRequired = 1;
[calloutView addGestureRecognizer:singleTap];
[view addSubview:calloutView];
- (void)handleSingleTap:(UIGestureRecognizer *)recognizer {
NSLog(#"it works");
}