objective c - iphone uiscrollview and uiimageview - setting initial zoom

Question

I use the following code to load an image into an scroll view. The image always loads at 100% zoom. Is there a way to set it to load to another zoom level, say .37?

I have tried scrollView.zoomScale = .37 but it didnt seem to work

UIImageView *tempImage = [[UIImageView alloc]initWithImage:[UIImage imageWithData:data]];
        self.imageView = tempImage;

        scrollView.contentSize = CGSizeMake(imageView.frame.size.width , imageView.frame.size.height);
        scrollView.maximumZoomScale = 1;
        scrollView.minimumZoomScale = .37;
        scrollView.clipsToBounds = YES;
        scrollView.delegate = self;

        [scrollView addSubview:imageView];

Answer 1

Zooming only works when you implement the viewForZoomingInScrollView: delegate callback.

-(UIView *) viewForZoomingInScrollView:(UIScrollView *)inScroll {
  return imageView;
}