PullToBrew

Everyone likes coffee. What if you could brew virtual coffee while wating for some data to be transferred to your device. That would be delicious.

Installation

Add the Swift Package in Xcode.

Usage

1) Add an instance of PullToBrewView

class TableViewController: UITableViewController {
  
  var refreshView: PullToBrewView!
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    
    refreshView = PullToBrewView(scrollView: tableView)
    refreshView.refreshDelegate = self
    
    tableView.addSubview(refreshView)
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    
    refreshView.removeFromSuperview()
    refreshView = nil
  }
}

2) Forward scroll view delegate methods

extension TableViewController {
  override func scrollViewDidScroll(_ scrollView: UIScrollView) {
    refreshView.scrollViewDidScroll(scrollView)
  }
  
  override func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
    refreshView.scrollViewWillEndDragging(scrollView, withVelocity: velocity, targetContentOffset: targetContentOffset)
  }
  
  override func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
    refreshView.scrollViewWillBeginDragging(scrollView)
  }
}

3) Conform to PullToBrewDelegate

extension TableViewController: PullToBrewDelegate {
  func refreshViewDidRefresh(_ refreshView: PullToBrewView) {
    // load data and call `refreshView.endRefreshing()` when loading is finished
  }
}

Author

Dominik Hauser

Twitter: @dasdom

Book

Buy my book

Licence

MIT