title: set border of UITextView ios
body: <p>I have a program:</p>
  
  <pre><code>            [textView setFont:[UIFont fontWithName:@"ArialMT" size:20]];
              [textView setEditable:NO];
              [textView setScrollEnabled:NO];
              [textView.layer setMasksToBounds:NO];
              [textView.layer setBorderColor: [[UIColor lightGrayColor] CGColor]];
              [textView.layer setBorderWidth:1.0f];
              textView.layer.shadowColor = [[UIColor lightGrayColor]CGColor];
              textView.layer.shadowOpacity = 1.0f;
              textView.layer.shadowRadius = 5.0f;
              [textView.layer setShadowOffset:CGSizeMake(2, 2)];
  </code></pre>
  
  <p>this code set a shadow and border for a UITextView, but how can i set border of textview not include top line , only set border for left, right and bottom line ?</p>