title: swift alertview textfield - how to retrieve the text entered
body: <p>I'm showing an alert view to be able to rename a Book when selected. I am Having issues retrieving the input from the user.</p>
  
  <p>here is my code:</p>
  
  <pre><code>override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
  
          let optionMenu = UIAlertController(title: nil, message: "Choose Option", preferredStyle: .ActionSheet)
  
          let newBookAction = UIAlertAction(title: "Add New Book", style: .Default, handler: {
              (alert: UIAlertAction!) -&gt; Void in
  
  
              var alert = UIAlertController(title: "Add New Book", message: "What is the Name of the New Book?", preferredStyle: UIAlertControllerStyle.Alert)
              alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
              alert.addTextFieldWithConfigurationHandler { (textField) in
                  textField.placeholder = "New Book Name"
              }
  
              self.currentShelf.addNewBook(Book(bookName: self.alert.textFields[0] as String))
  
              self.presentViewController(alert, animated: true, completion: nil)
  
              self.tableView.reloadData()
  
              println("Book Added")
          })
  
          let deleteAction = UIAlertAction(title: "Delete", style: .Default, handler: {
              (alert: UIAlertAction!) -&gt; Void in
              self.currentShelf.allBooksOnShelf.removeAtIndex(indexPath.row)
              self.tableView.reloadData()
              println("Book Deleted")
          })
          let updateAction = UIAlertAction(title: "Update", style: .Default, handler: {
              (alert: UIAlertAction!) -&gt; Void in
              println("Book Updated")
          })
          let readAction = UIAlertAction(title: "Read", style: .Default, handler: {
          (alert: UIAlertAction!) -&gt; Void in
              if self.currentShelf.allBooksOnShelf[indexPath.row].hasBeenRead == false{
                  self.currentShelf.allBooksOnShelf[indexPath.row].hasBeenRead = true
                  var alert = UIAlertController(title: "Read Book", message: "Thanks For Reading!", preferredStyle: UIAlertControllerStyle.Alert)
                  alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
                  self.presentViewController(alert, animated: true, completion: nil)
                  println("Book Read")
  
  
              }
              else{
                  self.currentShelf.allBooksOnShelf[indexPath.row].hasBeenRead = false
                  var alert = UIAlertController(title: "Unread Book", message: "You Just UnRead A Book...", preferredStyle: UIAlertControllerStyle.Alert)
                  alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
                  self.presentViewController(alert, animated: true, completion: nil)
                  println("Book Unread")
              }
  
          })
  
          let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: {
              (alert: UIAlertAction!) -&gt; Void in
              println("Cancelled")
          })
  
          optionMenu.addAction(newBookAction)
          optionMenu.addAction(readAction)
          optionMenu.addAction(updateAction)
          optionMenu.addAction(deleteAction)
          optionMenu.addAction(cancelAction)
  
          self.presentViewController(optionMenu, animated: true, completion: nil)
  
  
  }
  </code></pre>
  
  <p>the spot I'm running into trouble is:</p>
  
  <pre><code>        let newBookAction = UIAlertAction(title: "Add New Book", style: .Default, handler: {
              (alert: UIAlertAction!) -&gt; Void in
  
  
              var alert = UIAlertController(title: "Add New Book", message: "What is the Name of the New Book?", preferredStyle: UIAlertControllerStyle.Alert)
              alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
              alert.addTextFieldWithConfigurationHandler { (textField) in
                  textField.placeholder = "New Book Name"
              }
  
              self.currentShelf.addNewBook(Book(bookName: self.alert.textFields[0] as String))
  
              self.presentViewController(alert, animated: true, completion: nil)
  
              self.tableView.reloadData()
  
              println("Book Added")
          })
  </code></pre>
  
  <p>i hope this is a simple fix, and i appreciate any help. thanks!</p>