tableView(_:cancelPrefetchingForRowsAt:)
Cancels a previously triggered data prefetch request.
Declaration
optional func tableView(_ tableView: UITableView, cancelPrefetchingForRowsAt indexPaths: [IndexPath])Parameters
- tableView:
The table view issuing the cancellation of the prefetch request.
- indexPaths:
The index paths of the items for which the data is no longer required.
Discussion
The table view calls this method on the main queue to cancel prefetch requests for cells that are no longer needed. Use this method to cancel operations initiated by a previous call to tableView(_:prefetchRowsAt:).
For information about how to cancel an asynchronous data loading task, see Concurrency Programming Guide.