问题描述

我在 MKAnnotation 的标注上有一个 detailDisclousure 按钮.当按下这个按钮时，我需要调用一个方法，传递一个参数，该参数标识调用它的 annotation.怎么可能?

I have a detailDisclousure button on the callout of a MKAnnotation. When this button is pressed I need to call a method passing a parameter that identifies the annotation that called it. How could it be done?

这是我对注解的看法:

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{

if ([annotation isKindOfClass:[Annotation class]])
{
    static NSString* identifier = @"identifier";

    MKPinAnnotationView* pinView = (MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:identifier];

    if (pinView == nil) 
    {
        pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier]autorelease];
    }

    Annotation *antt = annotation;

    pinView.canShowCallout = YES;
    pinView.draggable =    YES;

    UIButton* detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

    [detailButton performSelector:@selector(goToViewWithAnnotation:) withObject:antt];

    pinView.rightCalloutAccessoryView = detailButton;

    return pinView;
}

else 
{
    return nil; 
}
}

这是应该使用参数调用的方法:

And this is the method that should be called with the parameter:

-(void)goToViewWithAnnotation:(Annotation *)annotation
{
    NextViewController *nextView = [[NextViewController alloc]initWithNibName:@"NextViewController" bundle:nil];

nextView.id = annotation.id;

[self.navigationController nextView animated:YES];
}

推荐答案

您可以通过 UIButton 的 tag 属性传递任何 NSInteger仅限.

you can pass any NSInteger via the tag property of the UIButton only.

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