Hi,
I am in need of some help. I have a MKMapView object, which allows the user to
add, move and delete MKAnnotationViews. When an Annotation is added to the map,
I use KVO to track if the Annotation was moved or selected:
for (MKAnnotationView *anAnnotationView in views) {
[anAnnotationView addObserver:self forKeyPath:@"selected"
options:NSKeyValueObservingOptionNew context:@"MapAnnontationSelected"];
}
Here is how I add the annotation:
- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id )
annotation{
MKPinAnnotationView *annView=[[MKPinAnnotationView alloc]
initWithAnnotation:annotation reuseIdentifier:@"currentloc"];
annView.animatesDrop= YES;
annView.canShowCallout = YES;
annView.draggable = YES;
UIImage *image = [UIImage imageNamed:@"gps_add.png"];
UIImageView *imgView = [[[UIImageView alloc] initWithImage:image]
autorelease];
annView.leftCalloutAccessoryView = imgView;
annView.rightCalloutAccessoryView = [UIButton
buttonWithType:UIButtonTypeDetailDisclosure];
annView.pinColor = MKPinAnnotationColorGreen;
return [annView autorelease];
}
The problem occurs when I delete the Annotation. Since the MKPinAnnotationView
is set to auto release, the object is deallocated with the observer still
attached.
"An instance 0xb323890 of class MKPinAnnotationView was deallocated while key
value observers were still registered with it. Observation info was leaked, and
may even become mistakenly attached to some other object. Set a breakpoint on
NSKVODeallocateBreak to stop here in the debugger. Here's the current
observation info:"
I tried to remove the observer when the pin gets deleted, but that still gives
the error:
for (id <MKAnnotation> annotation in mapView.annotations) {
[[mapView viewForAnnotation:annotation] removeObserver:self
forKeyPath:@"selected"];
}
Any help would be greatly appreciated.
Thx.
Phil
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