clicking search bar doesn't promp keypad (iOS Swift)

I'm a Swift noob, so sorry for the easy question.

I think I haven't attached the correct events for my search bar as when I click in it, the keyboard doesn't appear.

In the storyboard, I'm pretty sure I have to set the outlet for the UISearchBar's delegate to be the View Controller. But from this screenshot, it looks like the delegate is simply to the view.

Here's my viewController.swift file, can someone help spot the error?

//
//  ViewController.swift
//  PhotoSearchExample
//
//  Created by Tim Peterson on 10/30/14.
//  Copyright (c) 2014 Tim Peterson. All rights reserved.
//

import UIKit

class ViewController: UIViewController, UISearchBarDelegate {

    @IBOutlet weak var scrollView: UIScrollView!

    //@IBOutlet weak var searchString: UISearchBar!

    let instagramClientID = "xxxx"

    func searchInstagramByHashtag(searchString: String) {
        for subview in self.scrollView.subviews {
            subview.removeFromSuperview()
        }

        let instagramURLString = "https://api.instagram.com/v1/tags/" + searchString + "/media/recent?client_id=" + instagramClientID

        let manager = AFHTTPRequestOperationManager()

       self.scrollView.alpha = 0.0

        let activityIndictorView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.Gray)
        activityIndictorView.center = self.view.center
        self.view.addSubview(activityIndictorView)
        activityIndictorView.startAnimating()

        manager.GET( instagramURLString,
            parameters: nil,
            success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
                println("JSON: " + responseObject.description)

                if let dataArray = responseObject.valueForKey("data") as? [AnyObject] {
                    self.scrollView.contentSize = CGSizeMake(320, CGFloat(320*dataArray.count))
                    for var i = 0; i < dataArray.count; i++ {
                        let dataObject: AnyObject = dataArray[i]
                        if let imageURLString = dataObject.valueForKeyPath("images.standard_resolution.url") as? String {
                            println("image " + String(i) + " URL is " + imageURLString)



                            let imageView = UIImageView(frame: CGRectMake(0, CGFloat(320*i), 320, 320))
                            self.scrollView.addSubview(imageView)
                            imageView.setImageWithURL( NSURL(string: imageURLString))

                            activityIndictorView.stopAnimating()

                            UIView.animateWithDuration(1.0, animations: {
                                self.scrollView.alpha = 1.0
                                }, completion: {
                                    (value: Bool) in
                                    println("Animation complete!")
                            })

                        }
                    }
                }
            },
            failure: { (operation: AFHTTPRequestOperation!,error: NSError!) in
                println("Error: " + error.localizedDescription)
        })
    }

    func searchBarSearchButtonClicked(searchBar: UISearchBar!) {

        //println("search bar clicked!")

        searchBar.resignFirstResponder()
        searchInstagramByHashtag(searchBar.text)
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        searchInstagramByHashtag("clararockmore")
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}