有没有办法对用于 MKUserLocation 蓝点的 MKAnnotationView 进行子类化？

发布于 2024-12-12 02:23:23 字数 358 浏览 0 评论 0原文

我通过子类化 MKAnnotationView 创建了一个自定义注释视图。此类还创建一个自定义标注（信息弹出“气泡”）视图，该视图的外观与我的应用程序相匹配。

我还希望能够重新设计用户位置点的标注气泡，但似乎我对该视图的唯一控制是它是否被完全覆盖，通过在mapView中使用以下内容： viewForAnnotation: 方法：

if(annotation == self.mapView.userLocation)
{
    return nil;
}

但我真正想做的是找出 MapKit 对用户位置蓝点使用的注释视图，然后将其子类化，以便我可以为其标注气泡添加外观...或者还有其他方法吗？还是根本就没有办法？

原文

I've created a custom annotation view by subclassing MKAnnotationView. This class also creates a custom callout (info pop-up 'bubble') view which is skinned to match my app.

I also want to be able to reskin the callout bubble for the user location dot, but it seems as though the only control I have over that view is whether it is overridden completely or not, by using the following inside the mapView:viewForAnnotation: method:

if(annotation == self.mapView.userLocation)
{
    return nil;
}

But what I really want to do is find out what annotation view MapKit is using for the user location blue dot, and then subclass it so I can skin its callout bubble... Or is there another way? Or just no way at all?

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傲鸠 2024-12-19 02:23:23

我不确定这会对您有帮助，但您可以使用默认的用户位置注释视图，然后窃取 mapView:didSelectAnnotationView: 中的视图：

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
    if (view == [mapView viewForAnnotation:mapView.userLocation]) {
        // do what you want to 'view'
        // ...
    }
    // ...
}

我已经使用此技巧来更改标注标题和副标题，并使用 leftCalloutAccessoryView 添加图像。但是，我还没有尝试完全替换标注，所以我不知道这是否可能。

I am not sure this will help you, but you can use the default user location annotation view, then steal the view in mapView:didSelectAnnotationView::

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
    if (view == [mapView viewForAnnotation:mapView.userLocation]) {
        // do what you want to 'view'
        // ...
    }
    // ...
}

I have used this trick to change the callout title and subtitle, and add an image using leftCalloutAccessoryView. However, I haven't tried totally replacing the callout, so I don't know if it's possible.

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酷到爆炸 2024-12-19 02:23:23

您可以使用

if ([annotation isKindOfClass:[MKUserLocation class]]) { // or if(annotation == self.mapView.userLocation)
   MKAnnotationView * annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:@"MyLocation"];
   if (annotationView == nil) {
      annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"MyLocation"] autorelease];
         annotationView.canShowCallout = NO;
         annotationView.image = [UIImage imageNamedWithBrand:@"MyLocationPin.png"];
      } else {
         annotationView.annotation = annotation;
      }
   return annotationView;
}

You can use

if ([annotation isKindOfClass:[MKUserLocation class]]) { // or if(annotation == self.mapView.userLocation)
   MKAnnotationView * annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:@"MyLocation"];
   if (annotationView == nil) {
      annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"MyLocation"] autorelease];
         annotationView.canShowCallout = NO;
         annotationView.image = [UIImage imageNamedWithBrand:@"MyLocationPin.png"];
      } else {
         annotationView.annotation = annotation;
      }
   return annotationView;
}

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