UITableView with dynamic cell heights jumping when scrolling up after reloading cell

Question

I have a table view with the potential for each cell to have its own height, thus isn\'t suitable to use rowHeight. Instead, right now I\'m using let indexSet

Answer 1

In iOS 13.5.1:

I have a tableView which contains 4 types of cells , all off them having different and dynamic heights. I have followed the accepted solution here, but to solve jumping effect I need to add more when reloading table view:

From accepted answer I have added below code: Declare this variable

var allCellHeights = [IndexPath : CGFloat]()

Then add 2 methods:

 func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
     self.allCellHeights[indexPath] = cell.frame.size.height
 }
 func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
     return self.allCellHeights[indexPath] ?? UITableView.automaticDimension
 }

Now the extra code I have to add when reloading tableview:

let contentOffset = self.tableView.contentOffset
self.tableView.reloadData()
self.tableView.layoutIfNeeded()
self.tableView.setContentOffset(contentOffset, animated: false)

also check this answer : reloadData() of UITableView with Dynamic cell heights causes jumpy scrolling