ios - How to select all rows as default with checkmark? -

i want select rows when view appear, used index path in viewdidappear selected 1 row , without checkmark here's viewdidappear method:

-(void)viewdidappear:(bool)animated {     [super viewdidappear:animated];     self.navigationcontroller.navigationbar.topitem.title = @"select blood donors";     nsindexpath *indexpath=[nsindexpath indexpathforrow:0 insection:0];     [_tblresult selectrowatindexpath:indexpath animated:yes  scrollposition:uitableviewscrollpositionbottom]; } 

my table view methods :

-(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     nsstring *cellident = @"cell";     uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:cellident];      if(cell == nil)         cell = [[uitableviewcell alloc] initwithstyle:uitableviewcellstyledefault reuseidentifier:cellident];      cell.textlabel.text = [arrname objectatindex:indexpath.row];      if([arselectedrows containsobject:indexpath]) { cell.accessorytype = uitableviewcellaccessorycheckmark; } else { cell.accessorytype = uitableviewcellaccessorynone; }      return cell; }  -(void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath {     uitableviewcell *cell = [tableview cellforrowatindexpath:indexpath];      if(cell.accessorytype == uitableviewcellaccessorynone) {          cell.accessorytype = uitableviewcellaccessorycheckmark;         [arselectedrows addobject:indexpath];      }     else {         cell.accessorytype = uitableviewcellaccessorynone;         [arselectedrows removeobject:indexpath];     }      [tableview deselectrowatindexpath:indexpath animated:yes];     for(nsindexpath *indexpath in arselectedrows) {         [selections addobject:[arrname objectatindex:indexpath.row]];     }  } -(nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {     return [arrname count]; } 

i got output according question requirement.i tried more 3 hour.if try boolean can't achieve have multiple checkbox.if have 1 checkbox can use boolean.

 #import "viewcontroller.h"   @interface viewcontroller ()  {     nsmutablearray *arrproduct,*arrselectdeselectcheckmark;  }   @end   @implementation secondviewcontroller   @synthesize tblviewcheckmark;  - (void)viewdidload   {      [super viewdidload];      // additional setup after loading view nib.      arrproduct = [[nsmutablearray alloc]initwithobjects:@"ios",@"android",@"windows",@"blackberry",@"symbian",@"bada",nil];      arrselectdeselectcheckmark = [[nsmutablearray alloc]init];      for(int j=0;j<[arrproduct count];j++)      {          [arrselectdeselectcheckmark addobject:@"selected"];      }  }  - (void)didreceivememorywarning  {    [super didreceivememorywarning];     // dispose of resources can recreated. }   #pragma mark - uitableviewdatasource methods -(nsinteger)numberofsectionsintableview:(uitableview *)tableview {    return 1; } -(nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {    return arrproduct.count; } -(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     nsstring *strcell = @"cell";     uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:strcell];     if(cell==nil)     {       cell = [[uitableviewcell alloc]initwithstyle:uitableviewcellstyledefault reuseidentifier:strcell];     }     if([[arrselectdeselectcheckmark objectatindex:indexpath.row] isequaltostring:@"selected"])       cell.accessorytype = uitableviewcellaccessorycheckmark;     else        cell.accessorytype = uitableviewcellaccessorynone;     cell.textlabel.text = [arrproduct objectatindex:indexpath.row];     return cell; }  #pragma mark - uitableviewdelegate methods -(void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath {    uitableviewcell *cell = [tableview cellforrowatindexpath:indexpath];    @try    {       cgpoint touchpoint = [cell convertpoint:cgpointzero toview:tblviewcheckmark];       nsindexpath *indexpath = [tblviewcheckmark indexpathforrowatpoint:touchpoint];       nslog(@"%@",arrselectdeselectcheckmark);       if([arrselectdeselectcheckmark count]==0)       {          for(int i=0; i<[arrproduct count]; i++)          {             [arrselectdeselectcheckmark addobject:@"select"];          }       }       if([[arrselectdeselectcheckmark objectatindex:indexpath.row] isequaltostring:@"selected"])       {          cell.accessorytype = uitableviewcellaccessorynone;          [arrselectdeselectcheckmark replaceobjectatindex:indexpath.row withobject:@"deselected"];       }       else       {          cell.accessorytype = uitableviewcellaccessorycheckmark;          [arrselectdeselectcheckmark replaceobjectatindex:indexpath.row withobject:@"selected"];       }     }     @catch (nsexception *exception) {      nslog(@"the exception is-%@",exception);     } }  @end 

above code works perfectly.first select when view loads after can change that.