ios - UICollectionViewCell Custom Segue ViewController Connection error -


at current have following code shown below:

groupsviewcontroller.m

#import "groupsviewcontroller.h" #import "groupshomeviewcontroller.h" #import "customcell.h"  @interface groupsviewcontroller () {     nsarray *arrayofimages;     nsarray *arrayofdescriptions;     nsstring * _titlefornextvc; }  @end  @implementation groupsviewcontroller {     nsstring *reuseidentifier; }  - (void)viewdidload {     [super viewdidload];     [[self groupscollectionview]setdatasource:self];     [[self groupscollectionview]setdelegate:self];     reuseidentifier= @"smallicon";      arrayofimages = [[nsarray alloc]initwithobjects:@"a.png",@"b.png",@"c.png",nil];      arrayofdescriptions = [[nsarray alloc]initwithobjects:@"a",@"b",@"c",nil]; }  -(nsinteger)numberofsectionsincollectionview:(uicollectionview *)collectionview {     return 1; }  -(nsinteger)collectionview:(uicollectionview *)collectionview numberofitemsinsection:(nsinteger)section {     return [arrayofdescriptions count]; }   -(uicollectionviewcell *)collectionview:(uicollectionview *)collectionview cellforitematindexpath:(nsindexpath *)indexpath {     customcell *cell = [collectionview dequeuereusablecellwithreuseidentifier:reuseidentifier forindexpath:indexpath];     [[cell iconimage]setimage:[uiimage imagenamed:[arrayofimages objectatindex:indexpath.item]]];     [[cell iconlabel]settext:[arrayofdescriptions objectatindex:indexpath.item]];     return cell; }  - (void)collectionview:(uicollectionview *)collectionview didselectitematindexpath:(nsindexpath *)indexpath {     customcell *cell = (customcell *) [self collectionview:collectionview cellforitematindexpath:indexpath];     _titlefornextvc = cell.iconlabel.text; }  - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender {      if ([segue.identifier isequaltostring:@"groupshomesegue"]) {          groupshomeviewcontroller *vc = (groupshomeviewcontroller *)segue.destinationviewcontroller;         vc.titletext = _titlefornextvc;     } }  - (void)settitletext:(nsstring *)titletext {      _titletext = _titlefornextvc;      // set title of viewcontroller     self.title = _titletext; }  - (void)didreceivememorywarning {     [super didreceivememorywarning];     //dispose of resources can recreated. }  // toggle view button - (ibaction)celltoggleaction:(id)sender {      if([reuseidentifier isequaltostring:@"smallicon"]){         reuseidentifier=@"listview";         [sender setimage:[uiimage imagenamed:@"largeicon"]];     }     else if         ([reuseidentifier isequaltostring:@"listview"]){         reuseidentifier=@"largeicon";         [sender setimage:[uiimage imagenamed:@"smallicon"]];     }     else if         ([reuseidentifier isequaltostring:@"largeicon"]){         reuseidentifier=@"smallicon";         [sender setimage:[uiimage imagenamed:@"listview"]];     }      [self.groupscollectionview reloaddata]; }  //toggled cell sizes - (cgsize)collectionview:(uicollectionview *)collectionview layout:(uicollectionviewlayout *)collectionviewlayout sizeforitematindexpath:(nsindexpath *)indexpath {      cgsize cellsize;      if([reuseidentifier isequaltostring:@"smallicon"])         cellsize = cgsizemake(100, 130);     else if         ([reuseidentifier isequaltostring:@"listview"])         cellsize = cgsizemake(320, 50);     else if         ([reuseidentifier isequaltostring:@"largeicon"])         cellsize = cgsizemake(320, 360);      return cellsize; }  @end

groupshomeviewcontroller.m

#import "groupshomeviewcontroller.h"  @interface groupshomeviewcontroller ()  @end  @implementation groupshomeviewcontroller  -(void)viewdidload{     [super viewdidload];  }  - (void)didreceivememorywarning {     [super didreceivememorywarning];     // dispose of resources can recreated. }  @end

well problem seems cannot new viewcontroller via custom segue once have clicked on 1 of uicollectionviewcells. click cell in uicollectionview , title disappears nothing else. should open groupshomeviewcontroller , set title of view controller label placed within cell have clicked. can't see if current title work either can't mygroupshomeviewcontroller display.

i assume missing line of code somewhere along lines, struggling find out or can due receiving no error message's @ all.

also point out new , have been developing app in spare time past month or so. appreciated if me problem , thank in advance direction may missing.

so problem need save off "what ever" trying pass next view controller in property. in case think have in _titlefornextvc

next need name segue in storyboard e.g "groupshomesegue" can 

- (void)collectionview:(uicollectionview *)collectionview didselectitematindexpath:(nsindexpath *)indexpath {     customcell *cell = (customcell *) [self collectionview:collectionview cellforitematindexpath:indexpath];     _titlefornextvc = cell.iconlabel.text;    [self performseguewithidentifier:@"groupshomesegue" sender:self]; }

then work


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