MKMapView addAnnotation not on the MapView - objective-c

Question

I need some help because i can't to display annotation in my mapView.
I'm trying to update the annotations with this function :
- (void)addAnnotationsInMap:(NSMutableDictionary *)dico
{
NSLog(#"Agences Dictionary dico4324 : %#", dico);
if ([dico count] > 0)
{
NSLog(#"Count : %d", [dico count]);
for(int i = 0; i < [dico count]; i++)
{
CGFloat latDelta = [[[dico objectForKey:[NSString stringWithFormat:#"%d", i]] objectForKey:#"latitude"] floatValue];
CGFloat longDelta = [[[dico objectForKey:[NSString stringWithFormat:#"%d", i]] objectForKey:#"longitude"] floatValue];
CLLocationCoordinate2D newCoord =
{
(latDelta),
(longDelta)
};
MapPointAnnotations *mp = [[MapPointAnnotations alloc]
initWithCoordinate:newCoord
title:[[dico objectForKey:[NSString stringWithFormat:#"%d", i]] objectForKey:#"name"]
subTitle:[[dico objectForKey:[NSString stringWithFormat:#"%d", i]] objectForKey:#"street"]];
[agenceMapView addAnnotation:mp];
}
}
}
If i call my function in the same class (LocalizeViewController) with [self addAnnotationsInMap:Dico], the annotations are on the mapView (agenceMapView).
I need to call my function from an other class (RightSideBarViewController), but the annotations not display on the mapView if i call on the RightSideBarViewController class.
Where i call the function addAnnotationsInMap (Class RightSideBarViewController) :
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *identifier = #"LocaliserTop";
UIStoryboard *storyboard;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
storyboard = [UIStoryboard storyboardWithName:#"iPhone" bundle:nil];
} else if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
storyboard = [UIStoryboard storyboardWithName:#"iPad" bundle:nil];
}
LocalizeViewController *localizeViewController = (LocalizeViewController *)[storyboard instantiateViewControllerWithIdentifier:identifier];
[self.slidingViewController anchorTopViewOffScreenTo:ECLeft animations:nil onComplete:^{
CGRect frame = self.slidingViewController.topViewController.view.frame;
self.slidingViewController.topViewController = localizeViewController;
self.slidingViewController.topViewController.view.frame = frame;
[self.slidingViewController resetTopView];
}];
[localizeViewController addAnnotationsInMap:agencesDictionary];
}
Do you have some ideas ?

Answer 1

You should not call
[localizeViewController addAnnotationsInMap:agencesDictionary];
right after
LocalizeViewController *localizeViewController = (LocalizeViewController *)[storyboard instantiateViewControllerWithIdentifier:identifier];
because agenceMapView is still nil. So you are basically doing
[nil addAnnotation:mp];
To correct that, you should wait until the localizeViewController loads from the nib file (which take some time).
For example, you can put
localizeViewController.annotations = agencesDictionary;
instead of
[localizeViewController addAnnotationsInMap:agencesDictionary];
Then in viewDidLoad
[self addAnnotationsInMap:annotations];