如何获取在目标 c 中单击的 UIButtonTypeDetailDisclosure 注释？
我想在单击注释的详细信息按钮时进行详细视图。但每个引脚必须有不同的细节视图。为此，我尝试将标签设置为按钮。然后我将在 calloutAccessoryControlTapped 方法中使用此标签来添加其详细视图。我的代码如下。但它停在for循环处。我该如何解决这个问题？
- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation
{
static NSString *annReuseId = @"test";
MKPinAnnotationView *annView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:annReuseId];
if (annView == nil)
{
annView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annReuseId];
annView.animatesDrop = YES;
annView.canShowCallout = YES;
[annView setSelected:YES];
UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
annView.rightCalloutAccessoryView=detailButton;
for (int i=0; i<=[[mapView annotations] count]; i++)
{
detailButton.tag =[[[mapView annotations] objectAtIndex: i] integerValue];
NSLog(@"button %i",detailButton.tag);
}
}
else {
annView.annotation = annotation;
}
return annView;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(@"calloutAccessoryControlTapped: annotation = %@", view.annotation);
RestaurantsView *detailView=[[RestaurantsView alloc] initWithNibName:@"RestaurantsView" bundle:nil];
//here, can set annotation info in some property of detailView
// [[self navigationController] pushViewController:detailView animated:YES];
// [detailView release];
[self.view addSubview:detailView.view];
}
I want to do detail view when click the annotation's detail button. But each pin must be have different detail view. To do this, I try to set tag to buttons. And then I will use this tags at calloutAccessoryControlTapped method for add their detail view. My code below. But it is stopped at for loop. How can I solve this?
- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation
{
static NSString *annReuseId = @"test";
MKPinAnnotationView *annView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:annReuseId];
if (annView == nil)
{
annView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annReuseId];
annView.animatesDrop = YES;
annView.canShowCallout = YES;
[annView setSelected:YES];
UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
annView.rightCalloutAccessoryView=detailButton;
for (int i=0; i<=[[mapView annotations] count]; i++)
{
detailButton.tag =[[[mapView annotations] objectAtIndex: i] integerValue];
NSLog(@"button %i",detailButton.tag);
}
}
else {
annView.annotation = annotation;
}
return annView;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(@"calloutAccessoryControlTapped: annotation = %@", view.annotation);
RestaurantsView *detailView=[[RestaurantsView alloc] initWithNibName:@"RestaurantsView" bundle:nil];
//here, can set annotation info in some property of detailView
// [[self navigationController] pushViewController:detailView animated:YES];
// [detailView release];
[self.view addSubview:detailView.view];
}
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评论（1）
您不需要设置详细信息按钮的
标签。您可以删除viewForAnnotation:中的整个for循环。如果您想访问calloutAccessoryControlTapped:中的注释，只需使用view.annotation就像您对NSLog(@"calloutAccessoryControlTapped: annotation = %@", view.annotation）；。如果您确实需要索引，请使用
[mapView.annotations indexOfObject:view.annotation]但要小心，因为该数组还可能包含所有其他类型的注释，例如MKUserLocation。You don't need to set the
tagof the detail button. You can remove the wholeforloop in theviewForAnnotation:. If you want to access the annotation insidecalloutAccessoryControlTapped:just use theview.annotationlike you did with yourNSLog(@"calloutAccessoryControlTapped: annotation = %@", view.annotation);.If you really need the index then use
[mapView.annotations indexOfObject:view.annotation]but be careful since that array may also include all other kinds of annotations such as theMKUserLocation.