Swift tableView Pagination

Question

I have success working tableview with json parsing codes.But may have 1000 more item so need pagination when scrolling bottom side. I dont know how can i do this my codes un

Answer 1

SWIFT 3.0 and 4.0

If you're sending the page number in the API request then this is the ideal way for implementing pagination in your app.

1. declare the variable current Page with initial Value 0 and a bool to check if any list is being loaded with initial value false

    var currentPage : Int = 0
    var isLoadingList : Bool = false

2. This is the function that gets the list example:

    func getListFromServer(_ pageNumber: Int){
        self.isLoadingList = false
        self.table.reloadData()
    }

3. This is the function that increments page number and calls the API function

   func loadMoreItemsForList(){
       currentPage += 1
       getListFromServer(currentPage)
   }
   

4. this is the method that will be called when the scrollView scrolls

    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        if (((scrollView.contentOffset.y + scrollView.frame.size.height) > scrollView.contentSize.height ) && !isLoadingList){
            self.isLoadingList = true
            self.loadMoreItemsForList()
        }
    }

P.S. the bool isLoadingList role is to prevent the scroll view from getting more lists in one drag to the bottom of the table view.