callout is not showing by default in map - ios

Question

I am trying to show callout on a pin by without clicking on the pin.In short, I want show the callout when the pins are getting placed on the map.
This is code I am using:
-(MKAnnotationView*)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation // Method to handle all the annotations on map.
{
if([annotation isKindOfClass: [MKUserLocation class]])
return nil;
static NSString *annotationID = #"MyAnnotation";
MKPinAnnotationView *pinView = (MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationID] ;
if (!pinView) {
pinView = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annotationID];
pinView.canShowCallout = YES;
pinView.image = [UIImage imageNamed:#"map_pin.png"];
//Setting Right call button
pinView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
//Setting Left Call button
self.favButton = [UIButton buttonWithType:UIButtonTypeCustom];
self.favButton.frame = CGRectMake(0, 0, 23, 23);
self.favButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
self.favButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
[self.favButton setImage:[UIImage imageNamed:#"favourite.png"] forState:UIControlStateNormal];
pinView.leftCalloutAccessoryView = self.favButton;
[self.mapView selectAnnotation:annotation animated:YES];
}
return pinView;
}
Any help would be appreciable.

Answer 1

Try with This :
- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views{
for (id<MKAnnotation> currentAnnotation in mapView.annotations) {
if ([currentAnnotation isEqual:annotationToSelect]) {
[mapView selectAnnotation:currentAnnotation animated:YES];
}
}
}
OR
EDIT :
-(MKAnnotationView*)mapView:(MKMapView *)mapView viewForAnnotation:(id)annotation // Method to handle all the annotations on map.
{
if([annotation isKindOfClass: [MKUserLocation class]])
return nil;
static NSString *annotationID = #"MyAnnotation";
MKPinAnnotationView *pinView = (MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationID] ;
if (!pinView) {
pinView = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annotationID];
pinView.canShowCallout = YES;
pinView.image = [UIImage imageNamed:#"map_pin.png"];
//Setting Right call button
pinView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
//Setting Left Call button
self.favButton = [UIButton buttonWithType:UIButtonTypeCustom];
self.favButton.frame = CGRectMake(0, 0, 23, 23);
self.favButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
self.favButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
[self.favButton setImage:[UIImage imageNamed:#"favourite.png"] forState:UIControlStateNormal];
pinView.leftCalloutAccessoryView = self.favButton;
**[self performSelector:#selector(selectAnnotation:) withObject:annotation afterDelay:0.5];**
}
return pinView;
}
- (void)selectAnnotation:(id < MKAnnotation >)annotation
{
[self.mapView selectAnnotation:annotation animated:NO];
}