UITableView Checkmarks disappear when scrolling

Question

I have to make checkmarks on a tableView, but if I\'m scrolling and one check marked cell is not visible and I scroll back the checkmark disappeared.

While running

Answer 1

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) ->    UITableViewCell{
var cell : UITableViewCell = .........
if(boolArray[indexPath.row){
    cell.accessoryType = UITableViewCellAccessoryType.Checkmark
} else {
    cell.accessoryType = UITableViewCellAccessoryType.None
}
}

Try this code.