title: -[__NSSingleObjectArrayI dataUsingEncoding:] Objective C
body: <p>My JSON string is </p>
  
  <pre><code>"{\"CommentList\":[{\"SubmittedDate\":\"02/01/2017 06:09:32\",\"SubmittedTime\":\"\",\"UserId\":\"af0e1cda5c0\",\"UserName\":\"NepolionBon\",\"Comments\":\"\",\"Complete_Hour\":\"\",\"Complete_Minute\":\"\"}]}"
  </code></pre>
  
  <p>I need value of "SubmittedDate" and "Complete_Hour" from it.</p>
  
  <p>When I'm trying to convert this string with </p>
  
  <pre><code>NSData *responseData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
  </code></pre>
  
  <p>getting an error saying</p>
  
  <pre><code> -[__NSSingleObjectArrayI dataUsingEncoding:]: unrecognized selector sent to instance 0x14decfc0
  </code></pre>
  
  <p>can anyone help me?</p>