iphone - 向 UIMapView 添加可点击注释

Question

我想向带有公开按钮的 MapView 添加注释，但我无法弄清楚。

我创建了一个符合 MKAnnotation 协议(protocol)的 PlaceMark 类，然后创建 MapView 并添加 PlaceMark:

// Add annotation information
PlaceMark *venuePlacemark = [[PlaceMark alloc] initWithCoordinate:location];
venuePlacemark.locationTitle = [locationDictionary valueForKey:VENUE_NAME_KEY];
venuePlacemark.locationSubtitle = @"Touch to show in Google Maps";

// Create the accessory button on the placemark
[venueMap addAnnotation:venuePlacemark];
[venueMap setRegion:region animated:TRUE];
[venueMap regionThatFits:region];

这一切都有效，并且会显示一个图钉，触摸时会显示正确的标注文本。我不知道如何在调用中添加披露按钮。抱歉，如果这是初级的，我们将不胜感激。

戴夫

Answer 1

我想我已经弄清楚了...实现了以下委托(delegate)方法:

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
    MKPinAnnotationView *dropPin=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"venues"];

    UIButton *disclosureButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    [disclosureButton addTarget:self action:@selector(mapCallOutPressed:) forControlEvents:UIControlEventTouchUpInside];

    dropPin.rightCalloutAccessoryView = disclosureButton;
    dropPin.animatesDrop = YES;
    dropPin.canShowCallout = YES;

    return dropPin;
}