let okAction = UIAlertAction(title: "Enter", style: UIAlertActionStyle.Default, handler: {(alert :UIAlertAction!) in
            let query = PFQuery(className: "Playlists")
            query.whereKey("createdbyuser", equalTo: (PFUser.currentUser()?.username!)!)
            query.whereKey("playlistName", equalTo: self.inputTextField.text!)
            query.findObjectsInBackgroundWithBlock {(objects: [PFObject]?, error: NSError?) -> Void in
                if ((error) == nil)
                {
                    dispatch_async(dispatch_get_main_queue(), {
                        if (objects!.count == 0)
                        {
                            let object = PFObject(className: "Playlists")
                            object["playlistName"] = self.inputTextField.text!
                            object["createdBy"] = PFUser.currentUser()!
                            object["track"] = []
                            object.saveInBackgroundWithBlock({ (success, error) in
                                if(error == nil)
                                {
                                    let control = self.storyboard!.instantiateViewControllerWithIdentifier("singlePlaylistVC") as! SinglePlaylistViewController
                                    control.object = object
                                    self.navigationController!.pushViewController(control, animated: true)
                                }
                            })
                        }
                        else
                        {
                            print("You have already created this playlist")
                        }
                    })
                }
                else
                {
                    print(error?.description)
                }
            }
        })
        alertController.addAction(okAction)
        presentViewController(alertController, animated: true, completion: nil)