It seems that something changed with the conversion functions for CLCoordinate2D/MKMapPoint/CGPoint...
Detecting a point in a MKPolygon broke with iOS7 (CGPathContainsPoint)
The annotation disappears because the conversion beetween MkMapPoints and CGIPoints does not work anymore, if you log the "position" of the CALayer you will get points way outside the view. No idea why it works when doing touch events.
If you change the function to :
- (void) setPosition : (id) posValue;
{
//extract the mapPoint from this dummy (wrapper) CGPoint struct
MKMapPoint mapPoint = *(MKMapPoint*)[(NSValue*)posValue pointerValue];
CLLocationCoordinate2D coord = MKCoordinateForMapPoint(mapPoint);
CGPoint toPos = [self.mapView convertCoordinate:coord toPointToView:self.mapView];
if (MKMapRectContainsPoint(self.mapView.visibleMapRect, mapPoint)) {
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
animation.fromValue = [NSValue valueWithCGPoint:self.center];
animation.toValue = [NSValue valueWithCGPoint:toPos];
animation.duration = 0.8;
animation.delegate = self;
animation.fillMode = kCAFillModeForwards;
//[self.layer removeAllAnimations];
[self.layer addAnimation:animation forKey:POSITIONKEY];
//NSLog(@"setPosition ANIMATED %x from (%f, %f) to (%f, %f)", self, self.center.x, self.center.y, toPos.x, toPos.y);
}
self.center = toPos;
}
It should be working again.