Question

There are two delegate methods that telling map region is changed:

- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated  
- (void)mapView:(MKMapView *)mapView regionWillChangeAnimated:(BOOL)animated  

My question is:
Is there a way to detect the map region is changed from double tap or zooming?

Answer 1

You can use a gesture recognizer to detect the double tap:

UITapGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc]
                         initWithTarget:self action:@selector(handleDoubleTap:)];
recognizer.numberOfTapsRequired = 2;
[self addGestureRecognizer:recognizer];

and do the same for the pinch zoom, with a UIPinchGestureRecognizer