在我的地图注释中，我有一个 UIButton 作为标注中的每个附件视图。在里面- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control方法，我如何确定触摸了哪个附件视图来处理每个事件？这是我的代码：
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
MKPinAnnotationView *MyPin=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"current"];
UIButton *calloutButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
UIButton *directionsButton = [UIButton buttonWithType:UIButtonTypeCustom];
directionsButton.frame = CGRectMake(0, 0, 23, 23);
[directionsButton setBackgroundImage:[UIImage imageNamed:@"directions.png"] forState:UIControlStateNormal];
MyPin.leftCalloutAccessoryView = directionsButton;
MyPin.rightCalloutAccessoryView = calloutButton;
MyPin.draggable = NO;
MyPin.highlighted = NO;
MyPin.animatesDrop= YES;
MyPin.canShowCallout = YES;
MyPin.pinColor = MKPinAnnotationColorRed;
return MyPin;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control {
Annotation *ann = view.annotation;
if ([control tag] == 1) {
CLLocationCoordinate2D currentCoords = {ann.coordinate.latitude, ann.coordinate.longitude};
MKPlacemark *place = [[MKPlacemark alloc] initWithCoordinate: currentCoords addressDictionary:nil];
MKMapItem *destination = [[MKMapItem alloc] initWithPlacemark: place];
destination.name = ann.title;
destination.url = [NSURL URLWithString:@"http://www.wccca.com/PITS"];
NSArray *items = [[NSArray alloc] initWithObjects: destination, nil];
NSDictionary *options = [[NSDictionary alloc] initWithObjectsAndKeys:
MKLaunchOptionsDirectionsModeDriving,
MKLaunchOptionsDirectionsModeKey, nil];
[MKMapItem openMapsWithItems: items launchOptions: options];
}
if ([control tag] == 2) {
MKCoordinateRegion region;
region.center.latitude = ann.coordinate.latitude;
region.center.longitude = ann.coordinate.longitude;
region.span.latitudeDelta = 0.02;
region.span.longitudeDelta = 0.02;
[self.mapView setRegion:region animated:YES];
}
}
您可以只检查是否设置和使用标签control是左或右附件视图：
if (control == view.leftCalloutAccessoryView) {
//handle left control tap...
}
else
if (control == view.rightCalloutAccessoryView) {
//handle right control tap...
}
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