它的iOS标注附件窃听区分 [英] iOS distinguish between which callout accessory is tapped

问题描述

在我的地图注解，我有一个UIButton如标注每个配件视图。在 - （空）的MapView：（的MKMapView *）的MapView annotationView：（MKAnnotationView *）查看calloutAccessoryControlTapped：（UIControl *）控制方法，我怎么找出哪些附件视图被感动了处理每个事件？这里是我的code：

   - （MKAnnotationView *）的MapView：（*的MKMapView）的MapView viewForAnnotation：（ID＆LT; MKAnnotation＆GT;）{注解如果（[注解isKindOfClass：[MKUserLocation类]）
    回零;MKPinAnnotationView * MyPin = [[MKPinAnnotationView页头] initWithAnnotation：注释reuseIdentifier：@当前];*的UIButton = calloutButton [UIButton的buttonWithType：UIButtonTypeDetailDisclosure];
*的UIButton = directionsButton [UIButton的buttonWithType：UIButtonTypeCustom];
directionsButton.frame = CGRectMake（0，0，23，23）;
[directionsButton了setBackgroundImage：[UIImage的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;返回MyPin;
} - （无效）MapView类：（*的MKMapView）的MapView annotationView：（MKAnnotationView *）查看calloutAccessoryControlTapped：（UIControl *）{控制注释*安= view.annotation;如果（[控件标记] == 1）{    CLLocationCoordinate2D currentCoords = {ann.coordinate.latitude，ann.coordinate.longitude};    MKPlacemark *地点= [[MKPlacemark页头] initWithCoordinate：currentCoords addressDictionary：无];
    MKMapItem *目的地= [[MKMapItem页头] initWithPlacemark：地方];
    destination.name = ann.title;
    destination.url = [NSURL URLWithString：@http://www.wccca.com/PITS];
    NSArray的*项目= [[NSArray的页头] initWithObjects：目的地，无]
    *的NSDictionary选项= [[NSDictionary的页头] initWithObjectsAndKeys：
                             MKLaunchOptionsDirectionsModeDriving，
                             MKLaunchOptionsDirectionsModeKey，零]
    [MKMapItem openMapsWithItems：项目launchOptions：选择];}如果（[控制变量] == 2）{    MKCoordinateRegion区域;
    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：地区动画：是];
}}
 

解决方案

而不是设置和使用标签，你可以只检查是否控制是左或右附件查看

 如果（控制== view.leftCalloutAccessoryView）{
    //处理左控制水龙头...
}
其他
如果（控制== view.rightCalloutAccessoryView）{
    //处理右控制水龙头...
}
 

In my map annotations, I have a UIButton as each accessory view in the callouts. In the - (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control method, how do I figure out which accessory view was touched to handle each the events? Here's my code:

-(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];
}

}

解决方案

Rather than setting and using tags, you could just check if control is the left or right accessory view:

if (control == view.leftCalloutAccessoryView) {
    //handle left control tap...        
}
else
if (control == view.rightCalloutAccessoryView) {
    //handle right control tap...       
}

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