title: Swift 3: Unrecognized selector sent to instance Xcode 8
body: <p>I have programmatically created an <code>UIView</code> and added <code>UIPanGestureRecognizer</code> to it:</p>
  
  <pre><code>class ViewController: UIViewController{
      var preludeView: UIView!
  
      override func viewDidLoad() {
          super.viewDidLoad()
  
          initViews()
          createConstrants()
  
          let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: Selector(("handleTap:")))
          preludeView.addGestureRecognizer(panGestureRecognizer)
      }
  
      func handleTap(recognizer: UIPanGestureRecognizer) {
          print("WORKING!!!!")
      }
  
      func initViews() {
          ...
      }
  
      func createConstrants() {
          ...
      }
  }
  </code></pre>
  
  <p>But when I am touching the view Xcode is throwing an error:</p>
  
  <blockquote>
    <p>2016-07-13 09:24:29.918 Draft_Hypa_02[661:83024]
    -[Draft_Hypa_02.ViewController handleTap:]: unrecognized selector sent to instance 0x17d94a10 2016-07-13 09:24:29.921
    Draft_Hypa_02[661:83024] <strong>* Terminating app due to uncaught exception
    'NSInvalidArgumentException', reason: '-[Draft_Hypa_02.ViewController
    handleTap:]: unrecognized selector sent to instance 0x17d94a10'
    *</strong> First throw call stack: (0x249cf91b 0x2416ae17 0x249d52b5 0x249d2ee1 0x248fe238 0x294ae9eb 0x290e984f 0x28f7aff1 0x294afd4f
    0x28f3ba57 0x28f38017 0x28f78ec9 0x28f7867b 0x28f49125 0x28f476d3
    0x24991dff 0x249919ed 0x2498fd5b 0x248df229 0x248df015 0x25ecfac9
    0x28fb1189 0x93144 0x24587873) libc++abi.dylib: terminating with
    uncaught exception of type NSException</p>
  </blockquote>
  
  <p>However, if I remove argument in the <code>handleTap</code> function and remove the colon in the <code>Selector(("handleTap:"))</code>, everything works fine!</p>
  
  <p>Already spent a day to try to fix this issue and would be very appreciate for your help!</p>