title: Problem in -[CALayer setBorderColor:]
body: <p>I want to have border around my textview; for that, I did the following:</p>
  
  <pre><code>textView.layer.borderWidth = 5.0f;
  textView.layer.borderColor = [UIColor grayColor];   
  </code></pre>
  
  <p>I am getting the following warning:</p>
  
  <pre><code>warning: passing argument 1 of 'setBorderColor:' from incompatible pointer type
  </code></pre>
  
  <p>Update1 : my border is not visible</p>