ios - UITableViewCellAccessoryCheckmark get vanished after scrolling the tableview -

i'm working on tableview multiple selection, deselect.

i'm having 3 table views (the tableview have tag 400 need multiple selection , deselection -> alllmumbaitableview)

my issue : when i'm selecting multiple rows, uitableviewcellaccessorycheckmark vanished after scrolling tableview. thing here can see cells still in selected state not showing uitableviewcellaccessorycheckmark.

after scrolling table looking this

here code

@property (nonatomic, strong) nsmutablearray *arrindexpaths; 

uitableview methods -

- (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath  {         static nsstring *simpletableidentifier = @"simpletableitem";        uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:simpletableidentifier];            if(tableview.tag == 100)         {               cell.textlabel.text = [typearray objectatindex:indexpath.row];         }         else if (tableview.tag == 300)         {               cell.textlabel.text = [specialityarray objectatindex:indexpath.row];         }         else if (tableview.tag == 400)         {                 if (cell == nil)                 {                      cell = [[uitableviewcell alloc] initwithstyle:uitableviewcellstylesubtitle reuseidentifier:simpletableidentifier];                  }                 if ([self.arrindexpaths containsobject:[nsindexset indexsetwithindex:indexpath.row]])                 {                     cell.accessorytype = uitableviewcellaccessorycheckmark;                 }                 else                 {                     cell.accessorytype = uitableviewcellaccessorynone;                 }                      cell.textlabel.text = [allmumbaiarray objectatindex:indexpath.row];          }     return  cell;   }   - (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath    {           if(tableview.tag == 100)         {             _typetextfield.text=[typearray objectatindex:indexpath.row];             _typetableview.hidden = yes;         }         else if (tableview.tag == 300)         {             _specialitytextield.text=[specialityarray objectatindex:indexpath.row];             _specialitytableview.hidden = yes;         }         else if (tableview.tag == 400)         {              uitableviewcell *tableviewcell = [tableview cellforrowatindexpath:indexpath];             tableviewcell.accessorytype = uitableviewcellaccessorycheckmark;             [self.arrindexpaths addobject:[nsindexset indexsetwithindex:indexpath.row]];         }   } - (void)tableview:(uitableview *)tableview diddeselectrowatindexpath:(nsindexpath *)indexpath   {     if (tableview.tag == 400)     {         uitableviewcell *tableviewcell = [tableview cellforrowatindexpath:indexpath];         tableviewcell.accessorytype = uitableviewcellaccessorynone;         [self.arrindexpaths removeobject:[nsindexset indexsetwithindex:indexpath.row]];      }    } 

what want :

1) want uitableviewcellaccessorycheckmark after scrolling tableview (but should not other rows selected when i'm selecting one. previous problem -> selecting 1 uitableviewcell selects other cell after scrolling )

2) need selected values single array.

i suggest having each different cell identifier. don't know how set tableviews layout looks tableviewcell queue replaces other cells unlike implemented above.

static nsstring *simpletableidentifier = @"simpletableitem";  if(tableview.tag == 100) {     simpletableidentifier = @"simpletableitem"; } else if (tableview.tag == 300) {     simpletableidentifier = @"simpletableitem1"; } else if (tableview.tag == 400) {      simpletableidentifier = @"simpletableitem2"; }  uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:simpletableidentifier]; 

update final

#import "viewcontroller.h"  @interface viewcontroller () <uitableviewdatasource, uitableviewdelegate> {     nsarray *tmparray; }  @property(nonatomic, weak) iboutlet uitableview *tableview1, *tableview2, *tableview3;  @end  @implementation viewcontroller  - (void)viewdidload {     [super viewdidload];     // additional setup after loading view, typically nib.      tmparray = @[[nsnumber numberwithint:2],[nsnumber numberwithint:3]];      [self.view bringsubviewtofront:self.tableview1];     [self.view bringsubviewtofront:self.tableview2];     [self.view bringsubviewtofront:self.tableview3];  }  - (void)didreceivememorywarning {     [super didreceivememorywarning];     // dispose of resources can recreated. }   - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {     return 20; }  - (uitableviewcell*)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {      static nsstring *simpletableidentifier = @"simpletableitem";      if (self.tableview1 == tableview)     {         simpletableidentifier = @"simpletableitem";     }     else if (self.tableview2 == tableview)     {         simpletableidentifier = @"simpletableitem1";     }     else if (self.tableview3 == tableview) {          simpletableidentifier = @"simpletableitem2";     }       uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:simpletableidentifier];     if (cell == nil)     {         cell = [[uitableviewcell alloc] initwithstyle:uitableviewcellstylesubtitle reuseidentifier:simpletableidentifier];     }      if (self.tableview1 == tableview)     {         cell.textlabel.text = @"tableview1";     }     else if (self.tableview2 == tableview)     {         cell.textlabel.text = @"tableview2";     }     else if (self.tableview3 == tableview) {          if ([tmparray objectatindex:0] == [nsnumber numberwithint:(int)indexpath.row] ||             [tmparray objectatindex:1] == [nsnumber numberwithint:(int)indexpath.row] ) {             cell.accessorytype = uitableviewcellaccessorycheckmark;         } else {             cell.accessorytype = uitableviewcellaccessorynone;         }          cell.textlabel.text = @"tableview3";     }      return  cell; }  - (cgfloat)tableview:(uitableview *)tableview heightforrowatindexpath:(nsindexpath *)indexpath {     return 70; }