Callout Annotation view is not clickable the center - ios

Question

I want all my view is tappable and not just leftCalloutAccessoryView or rightCalloutAccessoryView, I also want the center to be tappable as well

Answer 1

You can use,
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint touchPoint = [touch locationInView:calloutView];
BOOL isPointInsideView = [calloutView pointInside:touchPoint withEvent:nil];
if (isPointInsideView)
{
// place your action code.
}
}
or you can use,
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapCalloutAction:)];
tapGestureRecognizer.delegate = self;
tapGestureRecognizer.numberOfTapsRequired = 1;
[calloutView addGestureRecognizer:tapGestureRecognizer];
-(void) tapCalloutAction:(id)sender
{
// do stuff
}

Answer 2

the idea is that you want to make all of the "accessory view" tappable without interfering with the original tap of the actual annotation.. this is how i do it:
first I create and assign a tap gesture to the annotation view after it has been selected like so (I use obj-c runtime object association here.. see this gist):
// set up vars
static NSString *const kExtraTapGestureRecognizer = #"extraGesture";
UIControl *currentAnnotationControl;
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view {
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
initWithTarget:self
action:#selector(handleAnnotationViewTap:)];
tap.numberOfTapsRequired = 1;
[tap setInfo:kExtraTapGestureRecognizer];
[view addGestureRecognizer:tap];
}
to handle the tap, I call MKMapViewDelegate Protocol's mapView:annotationView:calloutAccessoryControlTapped:, which basically means that if the view in between the accessory views gets tapped, it's as if one of the accessory views just got tapped:
- (void)handleAnnotationViewTap:(UITapGestureRecognizer *)gestureRecognizer {
MKAnnotationView *annotationView = (MKAnnotationView *)gestureRecognizer.view;
// currentAnnotationControl is just a reference to one of the
// accessory views of the annotation that has just been selected..
// see comment below
[self mapView:self.mapView
annotationView:annotationView
calloutAccessoryControlTapped:currentAnnotationControl];
}
when the annotationView is returned, I save a reference to one of its (left or right) accessoryViews like so:
- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[Random class]])
{
static NSString *annotationIdentifier = #"annotation";
MKAnnotationView *annotationView =
(MKAnnotationView *) [self.mapView annotationIdentifier];
if (annotationView == nil)
{
annotationView = [[MKAnnotationView alloc]
initWithAnnotation:annotation reuseIdentifier:RiderAnnotationIdentifier];
annotationView.canShowCallout = YES;
UIButton *leftButton = [UIButton buttonWithType:UIButtonTypeCustom];
leftButton.frame = CGRectMake(0, 0,21, 21);
[leftButton setImage:[UIImage imageNamed:#"smallInfo_rider_left.png"] forState:UIControlStateNormal];
[leftButton addTarget:nil action:nil forControlEvents:UIControlEventTouchUpInside];
annotationView.leftCalloutAccessoryView = leftButton;
// this is where i store a reference to one of the accessory views
currentAnnotationControl = leftButton;
return annotationView;
}
else
{
annotationView.annotation = annotation;
}
return annotationView;
keep in mind that we created an extra tap gesture, we must get rid of it as soon as one of the accessory views has been tapped like so:
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
// we remove the extra tap gesture so that it doesn't interfere
// with normal app flow in the future
for (UIGestureRecognizer *gesture in [view gestureRecognizers]) {
if ([[gesture info] isEqualToString:kExtraTapGestureRecognizer]) {
[gesture removeTarget:nil action:NULL];
}
}
// more stuff