One problem with the code above by Anna Karenina is that it doesn’t deal with when you add annotations below where the user is looking at the moment. Those annotations will float in mid-air before dropping because they are moved into the user’s visible map rect. Another is that it also drops the user location … Read more
Instead of creating an MKPinAnnotationView, create a plain MKAnnotationView. The MKPinAnnotationView subclass tends to ignore the image property since it’s designed to show the standard red, green, purple pins only (via the pinColor property). When you switch to MKAnnotationView, you’ll have to comment out the animatesDrop line as well since that property is specific to … Read more
I solved this by setting the autoresizingmask to fix the vertical bug and frame.size.width for the horizontal bug UIButton* infoButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; [infoButton setFrame:CGRectMake(0, 0, CGRectGetWidth(infoButton.frame)+10, CGRectGetHeight(infoButton.frame))]; [infoButton setAutoresizingMask:UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleTopMargin]; [annotationView setRightCalloutAccessoryView:infoButton];
I understand you want a pin with a custom callout. We can’t create a custom callout, but we can create an annotation with a completely customized view. So the trick is to add a second annotation when the first is selected, and make the 2nd annotation view look like a callout bubble. This is the … Read more
Your UIAnnotationView is always drawn at the same scale, the map’s zoom level doesn’t matter. That’s why centerOffset isn’t bound with the zoom level. annView.centerOffset is what you need. If you see that your pin is not at the good location (for example, the bottom center move a little when you change the zoom level), … Read more
Try a custom overlay. Add this in viewDidLoad: MKCircle *circle = [MKCircle circleWithCenterCoordinate:userLocation.coordinate radius:1000]; [map addOverlay:circle]; userLocation can be obtained by storing the MKUserLocationAnnotation as a property. Then, to actually draw the circle, put this in the map view’s delegate: – (MKOverlayRenderer *)mapView:(MKMapView *)map viewForOverlay:(id <MKOverlay>)overlay { MKCircleRenderer *circleView = [[MKCircleRenderer alloc] initWithOverlay:overlay]; circleView.strokeColor = … Read more
There is an even easier solution. Create a custom UIView (for your callout). Then create a subclass of MKAnnotationView and override setSelected as follows: – (void)setSelected:(BOOL)selected animated:(BOOL)animated { [super setSelected:selected animated:animated]; if(selected) { //Add your custom view to self… } else { //Remove your custom view… } } Boom, job done.