Pagination with Firebase firestore - swift 4

Question

I\'m trying to paginate data (infinitely scroll my tableview) using firestore. I\'ve integrated the code google gives for pagination as best I can, but I\'m still having problem

Answer 1

Simple, Fast and easy way is...

class FeedViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, FeedCellDelegate {

private var quotes = [Quote]() {
    
    didSet{ tbl_Feed.reloadData() }
}

var quote: Quote?
var fetchCount = 10

@IBOutlet weak var tbl_Feed: UITableView!

override func viewDidLoad() {
    super.viewDidLoad()

    fetchPost() 
}


// MARK: - API

func fetchPost() {
    
    reference(.Quotes).limit(to: getResultCount).getDocuments { (snapshot, error) in
        
        guard let documents = snapshot?.documents else { return }
        
        documents.forEach { (doc) in
            
            let quotes = documents.map {(Quote(dictionary: $0.data()))}
            
            self.quotes = quotes
        }
    }
}  

func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
    
    let currentOffset = scrollView.contentOffset.y
    let maxxOffset = scrollView.contentSize.height - scrollView.frame.size.height
    
    if maxxOffset - currentOffset <= 300 { // Your cell size 300 is example

        fetchCount += 5
        fetchPost()

        print("DEBUG: Fetching new Data")
    }
}

}