viewForAnnotation Not Called Until Map is Moved - iphone

Question

viewForAnnotation is not being called until I move or zoom in on the map. Because of this, my annotations do not show until the map is touched. Any idea why?
NSString *incident;
for (incident in weekFeed) {
NSString *finalCoordinates = [[NSString alloc] initWithFormat:#"%#", [incident valueForKey:#"coordinates"]];
NSArray *coordinatesArray = [finalCoordinates componentsSeparatedByString:#","];
latcoord = (#"%#", [coordinatesArray objectAtIndex:0]);
longcoord = (#"%#", [coordinatesArray objectAtIndex:1]);
// Final Logs
NSLog(#"Coordinates in NSString: [%#] - [%#]", latcoord, longcoord);
CLLocationCoordinate2D coord;
coord.latitude = [latcoord doubleValue];
coord.longitude = [longcoord doubleValue];
DisplayMap *ann = [[DisplayMap alloc] init];
ann.title = [NSString stringWithFormat: #"%#", [incident valueForKey:#"incident_type"]];
ann.subtitle = [NSString stringWithFormat: #"%#", [incident valueForKey:#"note"]];
ann.coordinate = coord;
[mapView addAnnotation:ann];
[ann release];
}
// Custom Map Markers
-(MKAnnotationView *)mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation {
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil; //return nil to use default blue dot view
static NSString *AnnotationViewID = #"annotationViewID";
MKAnnotationView *annotationView = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];
if (annotationView == nil) {
annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID] autorelease];
}
annotationView.canShowCallout = YES;
if ([annotationView.annotation.title isEqualToString:#"one"]) {
UIImage *pinImage = [UIImage imageNamed:#"marker_1.png"];
[annotationView setImage:pinImage];
}
if ([annotationView.annotation.title isEqualToString:#"two"]) {
UIImage *pinImage = [UIImage imageNamed:#"marker_2.png"];
[annotationView setImage:pinImage];
}
annotationView.annotation = annotation;
return annotationView;
}
- (void) mapView:(MKMapView *)mapV didAddAnnotationViews:(NSArray *)views {
CGRect visibleRect = [mapV annotationVisibleRect];
for (MKAnnotationView *view in views) {
CGRect endFrame = view.frame;
CGRect startFrame = endFrame; startFrame.origin.y = visibleRect.origin.y - startFrame.size.height;
view.frame = startFrame;
[UIView beginAnimations:#"drop" context:NULL];
[UIView setAnimationDuration:0.4];
view.frame = endFrame;
[UIView commitAnimations];
}
}

Answer 1

I solved it by using [self performSelectorInBackground:#selector(loadEverything) withObject:self]; instead of detachThreadSelector. That code (in viewDidLoad) wasn't originally posted.
Thanks for helping everyone!