title: iOS add bottom border to UILabel with shadow
body: <p>May i know how do i add bottom border to <code>UILable</code> only with shadow?
  No top, left, right border.</p>
  
  <p>this is not working. Here is the code I've tried but it's not working.</p>
  
  <pre><code>CALayer* layer = [titleLabel layer];
  layer.frame = CGRectMake(-1, -1, titleLabel.frame.size.width, 1.0f);
  layer.borderWidth=1;
  [layer setBorderWidth:2.0f];
  [layer setBorderColor:[UIColor blackColor].CGColor];
  [layer setShadowOffset:CGSizeMake(-3.0, 3.0)];
  [layer setShadowRadius:5.0];
  [layer setShadowOpacity:5.0];
  </code></pre>