我在地图中将点作为引脚注释并显示自定义注释视图。我的问题是，当我单击点时，有时自定义注释视图后面的点会出现在自定义注释视图的前面，而不是显示在它后面。
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
MKAnnotationView *annotationView;
PinAnnotationView *pinView = nil;
NSString *identifier;
if ([annotation isKindOfClass:[DisplayMap class]])
{
identifier = @"Pin";
NSInteger myid = ((DisplayMap *)annotation).takeid;
MKAnnotationView *pinView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
DisplayMap *a = (DisplayMap *)annotation;
pinView.annotation=a;
if (myid == 1)
{
UIImage *test = [UIImage imageNamed:@"red_dot.png"];
pinView.image = test;
pinView.opaque = NO;
}
else if (myid == 2)
{
UIImage *test = [UIImage imageNamed:@"blue_dot.png"];
pinView.image = test;
pinView.opaque = NO;
}
else {
UIImage *test = [UIImage imageNamed:@"green_dot.png"];
pinView.image = test;
pinView.opaque = NO;
}
return pinView;
}
else if ([annotation isKindOfClass:[CalloutAnnotation class]])
{
identifier = [NSString stringWithFormat:@"Callout%d",pinView.tag];
annotationView = [[CalloutAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
CalloutAnnotation *calloutAnnotation = (CalloutAnnotation *)annotation;
((CalloutAnnotationView *)annotationView).title = calloutAnnotation.title;
((CalloutAnnotationView *)annotationView).iTag = calloutAnnotation.iTag;
[annotationView setNeedsDisplay];
[UIView animateWithDuration:0.5f
animations:^(void) {
mapView.centerCoordinate = calloutAnnotation.coordinate;
}];
annotationView.annotation = annotation;
return annotationView;
}
}
-(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view1
{
if ([view1.annotation isKindOfClass:[DisplayMap class]])
{
DisplayMap *pinAnnotation = ((DisplayMap *)view1.annotation);
LoginDetail *obj = [[appDelegate mapArray] objectAtIndex:pinAnnotation.iTag];
[mapView removeAnnotations:annotationRemoveArray];
CalloutAnnotation *calloutAnnotation = [[CalloutAnnotation alloc] init];
calloutAnnotation.title = pinAnnotation.title;
pinAnnotation.calloutAnnotation = calloutAnnotation;
[mapView addAnnotation:calloutAnnotation];
[annotationRemoveArray addObject:calloutAnnotation];
[self setzoomonselectannotation:pinAnnotation.coordinate];
}
}