How to get a UITableView's visible sections?

Question

UITableView provides the methods indexPathsForVisibleRows and visibleCells, but how can I get the visible sections?

Answer 1

Swift 4 and Swift 5

extension UITableView {

    func returnVisibleCellsIndexes() -> [IndexPath] {
        var indexes = [IndexPath]()
        for cell in self.visibleCells {
            if let indexpath = self.returnIndexPath(cell: cell) {
                indexes.append(indexpath)
            }
        }
        return indexes
    }
    func returnIndexPath(cell: UITableViewCell) -> IndexPath?{
        guard let indexPath = self.indexPath(for: cell) else {
            return nil
        }
        return indexPath
    }
    
    func returnVisibleCells() -> [UITableViewCell]{
        let visiblecell = self.visibleCells
        return visiblecell
    }
    
}

How to use

  
    let visibleCellsIndexes = self.tableView.returnVisibleCellsIndexes()
    visibleCellsIndexes.forEach { (indexpath) in

            print(indexpath.section)

     }