在MKPinAnnotationView后面添加图像

问题描述

我正在尝试在MKPinAnnotationView后添加图像。看起来在这里应该很容易做到这一点：

I'm trying to add an image behind a MKPinAnnotationView. Seems like it should be rather easy to just do this in here:

- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views {
 for (MKAnnotationView *aView in views)
  [[aView superview] addSubview:imageView];
}

但我遇到的问题是孩子子视图到pin将呈现在它之上而不是它背后。

But the problem I am having in doing that is that the child subview to the pin will render on top of it not BEHIND it.

我也尝试过：

 for (MKAnnotationView *aView in views)
  [[aView superview] insertSubview:imageView atIndex:1];

这个问题是，当它在引脚后面时，一旦地图重新定位，图像漂浮在屏幕上。

The problem with this is that, while it IS behind the pin, as soon as the map is repositioned, the image floats off the screen.

有什么建议吗？谢谢

推荐答案

感谢您的输入，这里基本上是我没有子类化的结果：

Thanks for the input, here's basically what I ended up doing without subclassing:

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

    MKAnnotationView *annView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:nil];

    UIImage *image = [UIImage imageNamed:@"image.png"];
    UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
    [annView addSubview:imageView];
    [imageView release];

    MKPinAnnotationView *pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:nil];
    [annView addSubview:pinView];
    [pinView release];

    return annView;
}

我只需要一个引脚，所以我设置 reuseIdentifier 到 nil 。

I only needed one pin, so I set reuseIdentifier to nil.

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