我想在单击注释的详细信息按钮时进行详细 View 。但每个引脚必须有不同的细节 View 。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 View 。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];
}
最佳答案
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.
关于objective-c - 如何获取在 objective-c 中单击的 UIButtonTypeDetailDisclosure 注释？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9206812/