Swift autohide/show searchbar on top of tableview

Question

I have successfully implemented a search bar, now i want when swipe down the tableview to show search bar, to swipe again down, to hide search bar. What methods should i use?Thank you

Answer 1

A UITableView is a subclass of UIScrollView which has delegate methods (from UIScrollViewDelegate) that you can use to find out when a scroll has started and ended.

You can use the scrollViewDidScroll(_:) method to be notified when the user started scrolling, and the scrollViewDidEndDecelerating(_:) to be notified when the scroll has ended.

From your question, I assume that you already have a method to show/hide the search bar; you are just looking for "when" to call your showSearchBar or hideSearchBar method.

You could have a Bool property that stores whether the searchBar is hidden of not, and call you methods accordingly.

let searchBarIsHidden = true

override func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
   if searchBarIsHidden {
       showSearchBar() //your show search bar function
   } else {
       hideSearchBar() //your hide search bar function
   }
}

Now you should make sure you update the value of searchBarIsHidden at the end of your showSearchBar and hideSearchBar