before editing table view,do not detect willBeginEditingRowAtIndexPath and didEndEditingRowAtIndexPath
<p>I have defined a UITableview object,setEditing:YES,override function canEditRowAtIndexPath:,it return YES.
So it can edit well,delete or insert.Through commitEditingStyle:.But when before editing，it do not dect functions that willBeginEditingRowAtIndexPath and didEndEditingRowAtIndexPath defined.The two function could not be called.
why??</p>

<p>thanks.</p>
