Tells the delegate that the table view is about to go into editing mode.
- iOS 2.0+
The table-view object providing this information.
An index path locating the row in
This method is called when the user swipes horizontally across a row; as a consequence, the table view sets its
is property to
true (thereby entering editing mode) and displays a Delete button in the row identified by
index. In this "swipe to delete" mode the table view does not display any insertion, deletion, and reordering controls. This method gives the delegate an opportunity to adjust the application's user interface to editing mode. When the table exits editing mode (for example, the user taps the Delete button), the table view calls