To add pull to refresh on a TableView

Pull to Refresh.md

Adding Pull to Refresh To iOS tableView

Follow the code below for adding pull to refresh to a tableview

	value
iOS version	11.2
Swift	4

ViewControllerWithPullToRefresh.swift

var refresher : UIRefreshControl!

@IBOutlet weak var tableView: UITableView!

override func viewDidLoad() {
    super.viewDidLoad()
  
    refresher = UIRefreshControl()
  
    // to add text shown below the refresh indicator
    refresher.attributedTitle = NSAttributedString(string : "showing below wheel")
    refresher.addTarget(self, action: #selector(self.reloadData), for: UIControlEvents.valueChanged)
    
    tableView.addSubview(refresher)  
}

@objc func reloadData(){
    //some asynchronous | synchronous task to load data
    ...
    
  
    //on completing the task
    if refresher.isRefreshing {
        refresher.endRefreshing()
    }
}