Question

I have a MKAnnotationView that the user can drag around the map.

It is very difficult for a user to drag the pin. I’ve tried increasing the frame size and also using a giant custom image. But nothing seems to actually change the hit area for the drag to be larger than default.

Consequently, I have to attempt to tap/drag about ten times before anything happens.

MKAnnotationView *annView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"bluedot"] autorelease];

UIImage *image = [UIImage imageNamed:@"blue_dot.png"];

annView.image = image;
annView.draggable = YES;
annView.selected = YES;
return annView;

What am I missing here?

EDIT:

It turns out the problem is that MKAnnotationView needs to be touched before you can drag it. I was having trouble because there are a lot of pins nearby and my MKAnnotationView is very small.

Answer 1

I didn’t realise MKAnnotationView needed to be touched before you can drag it.

To get around this, I created a timer that selected that MKAnnotationView regularly.

NSTimer *selectAnnotationTimer = [[NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(selectCenterAnnotation) userInfo:nil repeats:YES] retain];  

and the method it calls:

- (void)selectCenterAnnotation {
    [mapView selectAnnotation:centerAnnotation animated:NO];    
}