Detect tap gesture on mkmapview that isn't the annotation? - objective-c

Question

How do I detect if the mapview is being tapped on, that isn't an annotation in obj-c?

Answer 1

Swift 4,
I fixed this in our case,
by adding tap gestures to both annotation view and map view.
add tap gesture to map
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.hideFilterView))
self.mapView.addGestureRecognizer(tapGesture)
//override "viewFor annotation:" something like this
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var annotationView = self.mapView.dequeueReusableAnnotationView(withIdentifier: "Pin")
if annotationView == nil {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "Pin"
annotationView?.canShowCallout = false
} else {
annotationView?.annotation = annotation
}
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.didTapPin(onMap:)))
annotationView?.addGestureRecognizer(tapGesture)
return annotationView
}
//then don't override
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) { }
So the all pins selections will be handled using tap gestures.
And you can detect map and pins tap separately.

Answer 2

Try UITapGestureRecognizer:
UITapGestureRecognizer *tapRec = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(mapDidTap:)];
[mapView addGestureRecognizer: tapGesture];
And
-(void)mapDidTap:(UITapGestureRecognizer *)gestureRecognizer {
//do something when map is tapped
}

Answer 3

The following code detects a tap in the map and adds a map marker at that location:
- (void)viewDidLoad {
[super viewDidLoad];
UITapGestureRecognizer *fingerTap = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(handleMapFingerTap:)];
fingerTap.numberOfTapsRequired = 1;
fingerTap.numberOfTouchesRequired = 1;
[self.mapView addGestureRecognizer:fingerTap];
}
- (void)handleMapFingerTap:(UIGestureRecognizer *)gestureRecognizer {
NSLog(#"handleMapFingerTap gesture: %#", gestureRecognizer);
if (gestureRecognizer.state != UIGestureRecognizerStateEnded) {
return;
}
CGPoint touchPoint = [gestureRecognizer locationInView:self.mapView];
CLLocationCoordinate2D touchMapCoordinate =
[self.mapView convertPoint:touchPoint toCoordinateFromView:self.mapView];
MKPointAnnotation *pa = [[MKPointAnnotation alloc] init];
pa.coordinate = touchMapCoordinate;
pa.title = #"Hello";
[self.mapView addAnnotation:pa];
}