ios - SearchBar only returning first tableview cell -

i have app in xcode core data has searchbar. searchbar searches through title , message of notes , displays cell containing keyletter entered. however, searchbar showing first result when type in anything. thanks

    #import "deviceviewcontroller.h" #import "devicedetailviewcontroller.h" @interface deviceviewcontroller () @property (strong) nsmutablearray *devices; @end  @implementation deviceviewcontroller {     nsarray *searchresults; } - (nsmanagedobjectcontext *)managedobjectcontext {     nsmanagedobjectcontext *context = nil;     id delegate = [[uiapplication sharedapplication] delegate];     if ([delegate performselector:@selector(managedobjectcontext)]) {         context = [delegate managedobjectcontext];     }     return context; } - (id)initwithstyle:(uitableviewstyle)style {     self = [super initwithstyle:style];     if (self) {     }     return self; }  - (void)viewdidload {     [super viewdidload];     uilabel *label = [[uilabel alloc] initwithframe:cgrectzero];     //label.backgroundcolor = [uicolor clearcolor];     label.font = [uifont fontwithname:@"helveticaneue-thin" size:28];     //label.shadowcolor = [uicolor colorwithwhite:0.0 alpha:0.5];     label.textcolor = [uicolor blackcolor];     self.navigationitem.titleview = label;     label.text = @"tapnotes";     [label sizetofit]; }  - (void)viewdidappear:(bool)animated {     [super viewdidappear:animated];     // fetch devices persistent data store     nsmanagedobjectcontext *managedobjectcontext = [self managedobjectcontext];     nsfetchrequest *fetchrequest = [[nsfetchrequest alloc] initwithentityname:@"device"];     self.devices = [[managedobjectcontext executefetchrequest:fetchrequest error:nil] mutablecopy];      [self.tableview reloaddata]; }  - (void)didreceivememorywarning {     [super didreceivememorywarning];     // dispose of resources can recreated. }  #pragma mark - table view data source - (nsinteger)numberofsectionsintableview:(uitableview *)tableview {     // return number of sections.     return 1; }  - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {     if (tableview == self.searchdisplaycontroller.searchresultstableview) {         return [searchresults count];      } else {         return self.devices.count;     }     //return self.devices.count;     } - (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     static nsstring *cellidentifier = @"cell";     uitableviewcell *cell = [self.tableview dequeuereusablecellwithidentifier:cellidentifier];     if (cell==nil) {         cell = [[uitableviewcell alloc]initwithstyle:uitableviewcellstylesubtitle reuseidentifier:cellidentifier]; }     nsmanagedobject *device = [self.devices objectatindex:indexpath.row];     [cell.textlabel settext:[nsstring stringwithformat:@"%@", [device valueforkey:@"name"]]];     [cell.detailtextlabel settext:[nsstring stringwithformat:@"%@",[device valueforkey:@"version"]]];     if (tableview == self.searchdisplaycontroller.searchresultstableview) {         device = [searchresults objectatindex:indexpath.row];     } else {         [self.devices objectatindex:indexpath.row];     }     return cell; } - (bool)tableview:(uitableview *)tableview caneditrowatindexpath:(nsindexpath *)indexpath {     // return no if not want specified item editable.     return yes; }   - (void)tableview:(uitableview *)tableview commiteditingstyle:(uitableviewcelleditingstyle)editingstyle forrowatindexpath:(nsindexpath *)indexpath {     nsmanagedobjectcontext *context = [self managedobjectcontext];      if (editingstyle == uitableviewcelleditingstyledelete) {         // delete object database         [context deleteobject:[self.devices objectatindex:indexpath.row]];          nserror *error = nil;         if (![context save:&error]) {             nslog(@"can't delete! %@ %@", error, [error localizeddescription]);             return;         }          // remove device table view         [self.devices removeobjectatindex:indexpath.row];         [self.tableview deleterowsatindexpaths:[nsarray arraywithobject:indexpath] withrowanimation:uitableviewrowanimationfade];     } }  /* // override support editing table view. - (void)tableview:(uitableview *)tableview commiteditingstyle:(uitableviewcelleditingstyle)editingstyle forrowatindexpath:(nsindexpath *)indexpath {     if (editingstyle == uitableviewcelleditingstyledelete) {         // delete row data source         [tableview deleterowsatindexpaths:@[indexpath] withrowanimation:uitableviewrowanimationfade];     }        else if (editingstyle == uitableviewcelleditingstyleinsert) {         // create new instance of appropriate class, insert array, , add new row table view     }    } */  /* // override support rearranging table view. - (void)tableview:(uitableview *)tableview moverowatindexpath:(nsindexpath *)fromindexpath toindexpath:(nsindexpath *)toindexpath { } */  /* // override support conditional rearranging of table view. - (bool)tableview:(uitableview *)tableview canmoverowatindexpath:(nsindexpath *)indexpath {     // return no if not want item re-orderable.     return yes; } */ - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender {     if ([[segue identifier] isequaltostring:@"updatedevice"]) {         nsmanagedobject *selecteddevice = [self.devices objectatindex:[[self.tableview indexpathforselectedrow] row]];          nsindexpath *indexpath = nil;          //device *device = nil;         if (self.searchdisplaycontroller.active) {             indexpath = [self.searchdisplaycontroller.searchresultstableview indexpathforselectedrow];             _devices = [searchresults objectatindex:indexpath.row];         } else {             indexpath = [self.tableview indexpathforselectedrow];             _devices = [_devices objectatindex:indexpath.row];         }         devicedetailviewcontroller *destviewcontroller = segue.destinationviewcontroller;         destviewcontroller.device = selecteddevice;     } } - (void)filtercontentforsearchtext:(nsstring*)searchtext scope:(nsstring*)scope {     nspredicate *resultpredicate = [nspredicate predicatewithformat:@"name contains[c] %@", searchtext];     searchresults = [_devices filteredarrayusingpredicate:resultpredicate]; } -(bool)searchdisplaycontroller:(uisearchdisplaycontroller *)controller shouldreloadtableforsearchstring:(nsstring *)searchstring {     [self filtercontentforsearchtext:searchstring                                scope:[[self.searchdisplaycontroller.searchbar scopebuttontitles]                                       objectatindex:[self.searchdisplaycontroller.searchbar                                                      selectedscopebuttonindex]]];      return yes; } @end