Change the rowheight for a particular index in a section - ios

Question

I have been setting the cell heights for my tableview with
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
switch indexPath.section {
case 0:
return 100
case 1:
tableView.estimatedRowHeight = 100
return UITableViewAutomaticDimension
default:
return 0
}
}
With this, for all the rows in section 1, the rowheight is set to 100. Now, I would like to change the row height of a particular row to set to 0 (i.e. make it hidden) on button click.
I have tried:
tableView.cellForRow(at: IndexPath(item: selectedIndex, section: 1))?.isHidden
Although the cell is hidden, I am left with a blank cell occupying the row height.
So I think I should be changing the row height to 0.
P.S. I know this can be achieved by removing the particular row from the model and using deleteRows(at indexPaths: [IndexPath],
with animation: UITableView.RowAnimation) But I do not want to change the model. How can this be done?

Answer 1

Use a flag to check if you clicked the button. Then reload the table after button click.
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return indexPath.section == 0 ? buttonClicked && indexPath.row == 0 ? CGFloat.leastNormalMagnitude : 100 : UITableViewAutomaticDimension
}
Longer, more readable version :-
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
switch indexPath.section {
case 0:
if buttonClicked && indexPath.row = rowIndex //index of required row which you can find out and store in a variable wherever necessary {
return CGFloat.leastNormalMagnitude
}
return 100
case 1:
tableView.estimatedRowHeight = 100
return UITableViewAutomaticDimension
default:
return 0
}
}