How to change annotation callout button color in iphone?

问题

I want to change the above blue color callout button to gray. How to do this?? Also is this possible to make whole annotation bubble clickable??? Can anyone suggest me the method.

回答1:

You are probably adding the blue button something like this

- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation{
MKPinAnnotationView *annView=(MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"annViewIdentifier"];

    if (annView == nil) {
        annView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"annViewIdentifier"] autorelease];
    }
UIButton *infoDefaultButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

        [infoDefaultButton addTarget:self
                       action:@selector(showDetails:)
             forControlEvents:UIControlEventTouchUpInside];
        annView.rightCalloutAccessoryView = infoDefaultButton;

}

if you want any custom button, then you can add UIButtonTypeCustom instead of UIButtonTypeDetailDisclosure and set its frame.

来源：https://stackoverflow.com/questions/8557719/how-to-change-annotation-callout-button-color-in-iphone