core data - iOS/coredata/swipe to delete: Why is following code not working? -

i trying swipe delete work core data using following code not working. realize there 2 approaches in following when 1 needed can't work in case. appreciate if can spot wrong. in advance suggestions.

    //enables swipe delete     - (void)tableview:(uitableview *)tableview commiteditingstyle:(uitableviewcelleditingstyle)editingstyle forrowatindexpath:(nsindexpath *)indexpath     {         // remove row data model  //first approach                if (editingstyle == uitableviewcelleditingstyledelete) {             // delete object manageobjectcontext             nslog(@"should deleting here");//this shows in log             [self.managedobjectcontext deleteobject:[self.fetchedresultscontroller objectatindexpath:indexpath]];              nserror *error = nil;             if (![self.managedobjectcontext save:&error]) {                 // handle error             }         }     //second approach         // delete item         items *itemtodelete = [self.fetchedresultscontroller objectatindexpath:indexpath];         nslog(@"deleting (%@)", itemtodelete.name);//this shows in log         [self.managedobjectcontext deleteobject:itemtodelete];          [[self tableview] reloaddata];      } 

your 2 approaches same thing (the difference being cast), won't you.

the preferred way implement nsfetchedresultscontroller delegate. when delete object context, delegate method controller:didchangeobject:... called. standard implementation (xcode template: master-detail, check core data) delete row expected (via deleterowsatindexpaths:).

if don't use delegate methods (not recommended), have call deleterowsatindexpaths in commiteditingstyle.