Swift version: 5.6
When you call reloadData()
on a UITableView
it will refresh all cells from your data source, but it will also lose any selections the user has made.
If you want to reload your table view while also saving and restoring any selections, you should take a copy of the indexPathsForSelectedRows
property before the reload, then re-apply those selections after calling reloadData()
.
This can be put into a simple UITableView
extension for easier use:
extension UITableView {
/// Reloads a table view without losing track of what was selected.
func reloadDataSavingSelections() {
let selectedRows = indexPathsForSelectedRows
reloadData()
if let selectedRow = selectedRows {
for indexPath in selectedRow {
selectRow(at: indexPath, animated: false, scrollPosition: .none)
}
}
}
}
With that in place, you can now call yourTableView.reloadDataSavingSelections()
to try it out.
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Available from iOS 5.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
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