title: How to make UIScrollView always scrollable
body: <p>I'm trying to make a class (ScrollableView : UIScrollView) that can always scroll vertically, similar to a TableView.  I've hardcoded a constant value to add to the content size so that it can always be scrollable.  For some strange reason though, it won't work when the value is 1; it will only work if the value is 4 or more.</p>
  
  <pre><code>- (id)initWithFrame:(CGRect)frame {
      self = [super initWithFrame:frame];
      if (self) {
          self.contentSize = CGSizeMake(frame.size.width, frame.size.height+1);
          self.scrollEnabled = YES;
      }
      return self;
  }
  </code></pre>
  
  <p>Is there another way to do this?  This doesn't seem to be the proper way.</p>