How to hide MKAnnotationView?

Question

I have a problem hiding a MKAnnotationView after some time [4 seconds]. I have a MKMapView named mapView which shows user location with MKUserLocation and I have added a UIButtonTypeDetailDisclosure to his MKAnnotationView. The MKAnnotationView automatically gets selected but I want to deselect it after some time with a NSTimer. I have correctly implemented the timer and the void method gets called correctly [I have checked it with a NSLog] but I don't know what code to write in the void method to make the annotation disappear.

this is my code:

- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views
{
    for (MKAnnotationView* view in views)
    {
        if ([view.annotation isKindOfClass:[MKUserLocation class]])
        {
            view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

            [self.mapView selectAnnotation:view.annotation animated:YES];
        }

        mKAnnotationHideTimer = [NSTimer scheduledTimerWithTimeInterval:4.0
                                                                 target:self
                                                               selector:@selector(hideMKAnnotation:)
                                                               userInfo:nil
                                                                repeats:NO];
    }
}

- (void)hideMKAnnotation:(NSArray *)views
{
   // What code here?
}

Can someone help me writing the code?

Answer 1

You need to pass your view.annotation as userInfo object and implement hideMKAnnotation as

- (void)hideMKAnnotation:(NSTimer*)timer
{ 
     id aview = timer.userInfo;
     [self.mapView deselectAnnotation:aview animated:YES];
}