objective c - How to populate an array from detailViewController and return to masterViewController in iOS? -

i have tableview navigate 'viewcontroller' ie passengerinfoviewcontroller in have form.i fill form , make dictionary out of , add nsmutablearray.

so when going tableview' pass array , reload thetableview` filled array.

so here's doing : -

  //navigate form   - (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath {    passengerinfoviewcontroller *pivc = [self.storyboard instantiateviewcontrollerwithidentifier:@"passengerinfoviewcontroller"];   [self.navigationcontroller pushviewcontroller:pivc animated:yes];  }   //after filling form    -(void)gobacktopassengerdetails:(uibutton*)sender{     nsstring *title = self.titletextfield.text;    nsstring *fname = self.firstnametextfield.text;    nsstring *lname =self.lastnametextfield.text;    nsstring *agestr = self.agetextfield.text;     nsmutabledictionary *dict = [[nsmutabledictionary alloc]init];    [dict setvalue:title forkey:@"title"];    [dict setvalue:fname forkey:@"firstname"];    [dict setvalue:lname forkey:@"lastname"];    [dict setvalue:agestr forkey:@"age"];    passenger *passengerobj = [passenger sharedinstance]; //singleton     [passengerobj.passengerdetailarray addobject:dict];      passengerdetailsviewcontroller *pdc = [self.storyboard instantiateviewcontrollerwithidentifier:@"passengerdetailsviewcontroller"]; [pdc getpassengerinfo:passengerobj.passengerdetailarray]; [self.navigationcontroller popviewcontrolleranimated:yes]; 

once navigate reload table view.however celforrow method doesn't populate new values.

 -(void)getpassengerinfo:(nsmutablearray*)arr{   passenger_infoarray =[[nsmutablearray alloc]init];   passenger_infoarray = arr;   nslog(@"passenger info array : %@", passenger_infoarray);//shows array of dictionaries    [passengerinfotableview reloaddata]; } 

my cellforrow method looks this:

   - (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {    //not called when doing reload data    static nsstring *cellidentifier = @"cell";    cell = [tableview dequeuereusablecellwithidentifier:cellidentifier];    if (cell == nil)    {        cell = [[uitableviewcell alloc]initwithstyle:uitableviewcellstylevalue1 reuseidentifier:cellidentifier ];     }    nslog(@"table view array  : %@",passenger_infoarray);     if (passenger_infoarray.count>0) {      nsstring *temp= [[passenger_infoarray objectatindex:indexpath.row]objectforkey:@"firstname"];     cell.textlabel.text = temp;    }else{      cell.textlabel.text = [nsstring stringwithformat:@"passenger %ld", (long)indexpath.row+1];     cell.imageview.image = [uiimage imagenamed:@"user.png"];     }      return cell;    } 

you can pass data using

1. delegates
2. notifications
3. properties
4. global variables

using delegates practice, , last 2 not preferred.