map kit not working - ios

Question

i am working on a map kit that shows all the data extracted from an xml web service .this web service contains 3 variables longitude (lon),latitude(lat), the name of the atm (atmName).the for loop is extracting the data from the Aatm array but the pins are not showing on the map .also my pins are all from the same region thats why i used a default center from the Aatm array with a default value. here is my code
thank you for helping me in advance :
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
Aatm = [[NSMutableArray alloc] init];
pinArray = [[NSMutableArray alloc] init];
NSString *url=#"http://192.168.83.1:8080/jeeRestApp-1.0/rest/Atm";
NSXMLParser *parser;
parser=[[NSXMLParser alloc] initWithContentsOfURL:[NSURL URLWithString:url]];
parser.delegate=self;
if ([parser parse]==FALSE){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Erreur" message:#"erreur de connection!" delegate:nil cancelButtonTitle:#"Cancel" otherButtonTitles:nil, nil];
[alert show];
}
//Setting the approximate region
CLLocationManager *locationManager = [[CLLocationManager alloc] init];
[locationManager setDistanceFilter:kCLDistanceFilterNone];
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[self.mapview setShowsUserLocation:YES];
MKCoordinateRegion Myregion;
CLLocationCoordinate2D center1;
//replace by variable -----------------------------------
atm=[Aatm objectAtIndex:1];
center1.latitude=[atm.lat doubleValue];
center1.longitude=[atm.lon doubleValue];
NSLog(#"la latitude (defaut) est: %#",atm.lat);
MKCoordinateSpan span1;
span1.longitudeDelta = 0.01f;
span1.latitudeDelta = 0.01f;
Myregion.center=center1;
Myregion.span=span1;
[mapview setRegion:Myregion animated:YES];
for(int i = 0; i<=[Aatm count] - 1;i++)
{
//CLLocationCoordinate2D newCoord = { atm.lat, atm.lon};
atm=[Aatm objectAtIndex:i];
CLLocationCoordinate2D pinLocaton;
pinLocaton.latitude=[atm.lat doubleValue];
NSLog(#"latitude est de :%#",atm.lat);
pinLocaton.longitude=[atm.lon doubleValue];
NSLog(#"longitude est de :%#",atm.lon);
MKPointAnnotation *annotation=[MKPointAnnotation alloc];
annotation.title=atm.atmName;
NSLog(#"latitude est de :%#",atm.atmName);
annotation.coordinate=pinLocaton;
MKPinAnnotationView *newAnnotation = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:#"annotation1"];
newAnnotation.pinColor = MKPinAnnotationColorGreen;
newAnnotation.animatesDrop = YES;
newAnnotation.canShowCallout = NO;
[newAnnotation setSelected:YES animated:YES];
[mapview addAnnotation:annotation];
NSLog(#"annotation added");
}

Answer 1

You need to implement mapView:viewForAnnotation: something like:
-(MKAnnotationView*)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
if([annotation isKindOfClass:[MKPointAnnotation class]])
{
MKPinAnnotationView* view = (MKPinAnnotationView*) [mapView dequeueReusableAnnotationViewWithIdentifier:#"pin"];
if(!view)
{
view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:#"pin"];
}
else
{
view.annotation = annotation;
}
view.pinColor = MKPinAnnotationColorGreen;
view.animatesDrop = YES;
view.canShowCallout = NO;
return view;
}
else
{
return nil;
}
}