Pull to refresh

TableViewController.swift

// first enable "Refreshing" on controller via storyboard

override func viewDidLoad() {
    super.viewDidLoad()
    
    // the value for "action" must mach the function's name
    refreshControl?.addTarget(self, action: "reloadStuff", forControlEvents: UIControlEvents.ValueChanged)
}

func reloadStuff() {
    // reload data here
    
    // then stop pull to refresh animation
    self.refreshControl?.endRefreshing()
}