为什么一个自定义的MKMapView注解图像上的触摸消失？

问题描述

我是我的注释图和设置图像就好了，但是当我敲击的MapView注释，图像从我的自定义图像可以追溯到红色的脚。这是为什么？

I am annotating my map and setting an image just fine, but when I tap the annotation on the MapView, the image goes from my custom image back to the red pin. Why is this?

- (MKAnnotationView *)mapView:(MKMapView *)newMapView viewForAnnotation:(id )newAnnotation {
    MKPinAnnotationView *annotation = [[MKPinAnnotationView alloc] initWithAnnotation:newAnnotation reuseIdentifier:@"currentloc"];
    if (annotation == nil) {
        annotation = [[MKAnnotationView alloc] initWithAnnotation:newAnnotation reuseIdentifier:@"currentloc"];
    }

    annotation.image = [UIImage imageNamed:@"anno.png"];
    annotation.canShowCallout = YES;
    annotation.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bus_stop_30x30.png"]];
    annotation.leftCalloutAccessoryView = imgView;

    return annotation;
}

我的code看起来与一些示例code，它不会产生这个问题。

My code looks identical to some sample code that does not produce this problem.

推荐答案

在这里回答我的问题，以防万一别人有同样的问题。请注意，我用MKPinAnnotationView - 它应改为MKAnnotationView，一切工作

Answering my own question here, just in case others have the same issue. Notice that I am using "MKPinAnnotationView" - it should be changed to "MKAnnotationView" and everything works.

固定code：

- (MKAnnotationView *)mapView:(MKMapView *)newMapView viewForAnnotation:(id )newAnnotation {
    MKAnnotationView *annotation = [[MKAnnotationView alloc] initWithAnnotation:newAnnotation reuseIdentifier:@"currentloc"];

    if (annotation == nil) {
        annotation = [[MKAnnotationView alloc] initWithAnnotation:newAnnotation reuseIdentifier:@"currentloc"];
    }

    annotation.image = [UIImage imageNamed:@"anno.png"];
    annotation.canShowCallout = YES;
    annotation.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bus_stop_30x30.png"]];
    annotation.leftCalloutAccessoryView = imgView;

    return annotation;
}

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