Pull to refresh

Refreshing.swift

class UserTableViewController: UITableViewController {
    
    var refresher: UIRefreshControl!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        refresher = UIRefreshControl()
        refresher.attributedTitle = NSAttributedString(string: "Pull to refresh")
        refresher.addTarget(self, action: "refresh", forControlEvents: UIControlEvents.ValueChanged)
        self.tableView.addSubview(refresher)
        
    }
}