如何获取UIButtonTypeDetailDisclosure在目标c中单击的注释？

Question

我想单击注解的详细按钮时执行详细视图。但是每个引脚必须具有不同的细节视图。要做到这一点，我尝试设置标签按钮。然后我会在calloutAccessoryControlTapped方法中使用这个标签来添加它们的详细视图。我的代码如下。但它停在for循环。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]; 
} 

Answer 1

您不需要设置详细信息按钮的tag。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);所做的那样。

如果您确实需要索引，然后使用[mapView.annotations indexOfObject:view.annotation]，但要小心，因为该数组还可能包含所有其他种类的注释，如MKUserLocation。