MKMapView static map image.m

- (void)setupMapSnapshot
{
    CLLocationCoordinate2D coordinate = self.outlet.annotaion.coordinate;
    
    MKMapSnapshotOptions* options = [MKMapSnapshotOptions new];
    options.size = self.mapImageView.frame.size;
    options.scale = [[UIScreen mainScreen] scale];
    options.region = MKCoordinateRegionMakeWithDistance(coordinate, 2000.f, 2000.f);
    MKMapSnapshotter* snapshotter = [[MKMapSnapshotter alloc] initWithOptions:options];
    
    [snapshotter startWithQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
              completionHandler:^(MKMapSnapshot *snapshot, NSError *error) {
                  
                  if (error) {
                      NSLog(@"MKMapSnapshotter error: %@", error);
                      return ;
                  }
                  
                  // draw annotaion pin
                  UIImage *image = snapshot.image;
                  snapshot = nil;
                  
                  MKAnnotationView *pin = [[MKPinAnnotationView alloc] initWithAnnotation:nil reuseIdentifier:@""];
                  UIImage *pinImage = pin.image;
                  
                  UIGraphicsBeginImageContextWithOptions(image.size, YES, image.scale);
                  [image drawAtPoint:CGPointMake(0, 0)];
                  
                  CGPoint point = [snapshot pointForCoordinate:coordinate];
                  
                  CGPoint pinCenterOffset = pin.centerOffset;
                  point.x -= pin.bounds.size.width / 2.0;
                  point.y -= pin.bounds.size.height / 2.0;
                  point.x += pinCenterOffset.x;
                  point.y += pinCenterOffset.y;
                  
                  [pinImage drawAtPoint:CGPointMake(image.size.width/2, image.size.height/2)];
                  
                  __block UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();
                  UIGraphicsEndImageContext();
                  image = nil;
                  
                  dispatch_async(dispatch_get_main_queue(), ^ {
                      self.mapImageView.image = finalImage;
                      finalImage = nil;
                  });
              }];
    
}