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我有很多车库，需要在地图中显示多个车库。

下面是我用于 Map 以显示多个引脚的代码。

CLLocationCoordinate2D annotationCoord;
for (NSMutableDictionary* aDict in Gfeeds) {
    annotationCoord.latitude = [aDict[@"GLatitude"] floatValue];
    annotationCoord.longitude = [aDict[@"GLongitude"] floatValue];

    MKPointAnnotation *annotationPoint2 = [[MKPointAnnotation alloc] init];
    annotationPoint2.coordinate = annotationCoord;
    annotationPoint2.title = [NSString stringWithFormat:@"%@", aDict[@"GName"]];
    annotationPoint2.subtitle = aDict[@"GId"];

    [geomapView addAnnotation:annotationPoint2];

}

现在我想要的是在单击那个地图图钉后显示车库的详细信息……为此我在下面做。

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

    MKPinAnnotationView *pinAnnotation = nil;
    if(annotation != geomapView.userLocation)
    {
        static NSString *defaultPinID = @"myPin";
        pinAnnotation = (MKPinAnnotationView *)[geomapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
        if ( pinAnnotation == nil )
            pinAnnotation = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease];

        pinAnnotation.canShowCallout = YES;

        //instatiate a detail-disclosure button and set it to appear on right side of annotation
        UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        pinAnnotation.rightCalloutAccessoryView = infoButton;

    }

    return pinAnnotation;
}

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control {
    GarageDetailsViewController *secondView = [self.storyboard instantiateViewControllerWithIdentifier:@"GarageDetails"];

    secondView.garageMainId = view.annotation.subtitle;

    [self.navigationController pushViewController:secondView animated:YES];
}

使用这种方式，我可以去 GarageDetails，但是我冒的风险是在字幕中显示车库的 ID。我想隐藏此字幕，以免显示 Id。

知道我该怎么做吗？

  1. 隐藏字幕

或者

  1. 将 id 从地图传递给 GarageDetails...
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1 回答 1

1

Why not subclass "MKPointAnnotation" (you can name it something like "FahimPointAnnotation), and in this subclass you can add a "garageID" property.

Then you can add the annotation to your map and when it's clicked on, you can retrieve the annotation and cast the "MKPointAnnotation" back to a "FahimPointAnnotation" and grab your garageID out of it (without having to worry about it appearing in the annotation view's subtitle field).

于 2014-01-04T15:03:19.720 回答