iOS refresh annotations on mapview

Question

I have a mapview where the annotation\'s coordinates are constantly being updated but when I use setCoordinate, the annotation does not move. How do I refresh the annotation

Answer 1

Updated (to reflect the solution):

Having your own custom annotations and implementing setCoordinate and/or synthesizing coordinate may cause issues.

Source: http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/LocationAwarenessPG/AnnotatingMaps/AnnotatingMaps.html

Previous solution:

You can simply remove all of the annotations and then re-add them.

[mapView removeAnnotations:[mapView.annotations]];

[mapView addAnnotations:(NSArray *)];

or remove them and re-add them one by one:

for (id annotation in mapView.annotations)
{
    [mapView removeAnnotation:annotation];
    // change coordinates etc
    [mapView addAnnotation:annotation]; 
}