objective c - SDWebImage not showing randomly in UITableViewCell -

hello have script downloads image , dynamically sets uitableview height after finishes download, images randomly not show , curious think when change , forth tab images appear . in options argument passing sdwebimageretryfailed.

any idea more welcome , thanks.

    @interface neobuggyfrontpageviewcontroller()     {         uiimageview *adbanner;         nsarray *news ;         nsmutabledata *imagedata;         nsurlconnection *connection;         uiimage *neoimage;         nsstring *category;         rssitem *item;         frontpageviewnewscell *cell ;         cgrect newframe;         __block cgrect descframe;         float newwidth , newheight;          __block float blockheight;     }      -(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     item = [news objectatindex:[indexpath row]];     cell = [tableview dequeuereusablecellwithidentifier:@"frontpagenewscell"];     [[cell newstitle] settext:[item title]];     [[cell newsvideo] setalpha:0.0];     if ([item newsimageurl]){         descframe = [[cell newsbody] frame];          [[cell newsimage] setimagewithurl:[item newsimageurl] placeholderimage:[uiimage imagenamed:@"placeholderimage.png"] options:sdwebimageretryfailed  completed:^(uiimage *image, nserror *error, sdimagecachetype cachetype){             if (image) {                 cgrect newsimageframe = [[cell newsimage] frame];                 float downimagewidth = image.size.width;                 float downimageheight = image.size.height;                 float newsimagewidth = 304.00; //imageviewsize.size.width;                 if (downimagewidth > newsimagewidth) {                     float scalefactor = newsimagewidth / downimagewidth;                     newwidth = downimagewidth * scalefactor;                     newheight = downimageheight * scalefactor;                  } else {                     newwidth = downimagewidth;                     newheight = downimageheight;                 }                  newframe = cgrectmake(newsimageframe.origin.x, newsimageframe.origin.y, newwidth, newheight);                  [[cell newsimage] setframe:newframe]; //asigno el nuevo frame la imagen .                   float neworiginy = newframe.origin.y + newframe.size.height + 10.00;                 descframe = cgrectmake(cell.newsbody.frame.origin.x,                                        neworiginy,                                        304.00,                                        cell.newsbody.frame.size.height);                   blockheight = newheight;             }             nslog(@"image %@ cached ? %u", image ,cachetype);             if (error) {                 nslog(@"error: %@",error);             }          }];      } else if([item newsvideourl]) {         [[cell newsimage] setalpha:0.0];         [[cell newsvideo] setalpha:1.0];         [[cell newsvideo] loadrequest:[nsurlrequest requestwithurl:[item newsvideourl]]];         float neworiginy = cell.newsvideo.frame.origin.y + cell.newsvideo.frame.size.height + 10.00;         descframe = cgrectmake(cell.newsbody.frame.origin.x, neworiginy, 304, cell.newsbody.frame.size.height);         blockheight = cell.newsvideo.frame.size.height;     }     [[cell newsimage] setneedsdisplay];     nsstring *desc = [[nsstring alloc] initwithstring:[item description]];     [[cell newsbody] setframe:descframe];     desc = [desc htmltostring:desc];     [[cell newsbody] settext:desc];     [[cell newsbody] setnumberoflines:0];     [[cell newsbody] sizetofit];     [cell setselectionstyle:uitableviewcellselectionstylenone];     return cell;  }      -(cgfloat)tableview:(uitableview *)tableview heightforrowatindexpath:(nsindexpath *)indexpath {         cell  = (frontpageviewnewscell *)[self tableview:tableview cellforrowatindexpath:indexpath];         cgsize descheight = [[[cell newsbody] text] sizewithfont:[[cell newsbody] font] constrainedtosize:cell.newsbody.frame.size linebreakmode:[[cell newsbody] linebreakmode]];         cgsize titleheight = [[[cell newstitle] text] sizewithfont:[[cell newstitle] font] constrainedtosize:cell.newstitle.frame.size linebreakmode:[[cell newstitle] linebreakmode]];         newheight = cell.newsimage.frame.size.height;         if (blockheight == 0) {             [tableview reloaddata];         } else {             float ch = titleheight.height + blockheight + descheight.height + 70;             [self setcellheight:ch];          }         return _cellheight;      } 

partially solved although solution less ideal. since needed show 10 cells prevented reuse of uitableviewcell

-(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     item = [news objectatindex:[indexpath row]];     nsstring *identifier = [nsstring stringwithformat:@"cell %d", indexpath.row];     uinib *nib = [uinib nibwithnibname:@"frontpageviewnewscell" bundle:nil];     [[self tableview] registernib:nib forcellreuseidentifier:identifier];     cell = [tableview dequeuereusablecellwithidentifier:identifier];       // cell = [tableview dequeuereusablecellwithidentifier:@"frontpagenewscell"]; 

still interested in finding solution reusing cell

thanks,