title: How to show my button when textfield clear button was pressed?
body: <p>I check my textfield like this:</p>
  
  <pre><code>-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
  {
      if ([subtitleField.text length] == 0)
      {
          searchAddress.hidden = NO;
      }
      else 
      {
          searchAddress.hidden = YES;
      }
  
     return  YES;   
  }
  </code></pre>
  
  <p>but it works only if I clear textfield by clear key, if I press clear button, it didn't work.</p>