UITableView: `tableView:cellForRowAtIndexPath:` not called for all rows

I have created a UITableView with 4 Sections and 3 Rows so totally 12 Rows. But

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

The above method only gets called for 9 times instead of 12 times. Why this happening? My 4th section is not getting constructed but my 1st section gets duplicated as 4th section.

Please refer my code below

@interface MainViewController : UITableViewController<UITextFieldDelegate,UITableViewDelegate,UITableViewDataSource>
 {
}
@end


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad 
{
  CGRect frameRect = CGRectMake(0,0,320,460);

  UITableView *tableView = [[UITableView alloc] initWithFrame:frameRect   
  style:UITableViewStyleGrouped];
  tableView.delegate = self;
  tableView.dataSource = self;  
  tableView.backgroundColor = [UIColor purpleColor];
  tableView.scrollEnabled = YES;

  self.view = tableView;
  [tableView release];

  [super viewDidLoad];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    // Return the number of rows in the section.
    return 3;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    // Return the number of sections.
    return 4;
}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
     NSLog(@"CELL IS NIL %i", indexPath.section);

  static NSString *CellIdentifier = @"Cell";
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
  if (cell == nil)
  {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

      if (indexPath.section == 0)
      {
          if(indexPath.row == 0)
          {
              cell.text = @"Tmail";

              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else if ( indexPath.row == 1 )
          {
              cell.text = @"English";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else
          {
              cell.text = @"Hindi";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
      }
      else if (indexPath.section == 1)
      {
          if(indexPath.row == 0)
          {
              cell.text = @"Street";

              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else if ( indexPath.row == 1 )
          {
              cell.text = @"City";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else
          {
              cell.text = @"State";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
      }
      else if (indexPath.section == 2)
      {
          if(indexPath.row == 0)
          {
              cell.text = @"Salem";

              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else if ( indexPath.row == 1 )
          {
              cell.text = @"Samalpatti";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else
          {
              cell.text = @"Chennai";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
      }

      else if (indexPath.section == 3)
      {
          if(indexPath.row == 0)
          {
              cell.text = @"NOKIA";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else if ( indexPath.row == 1)
          {
              cell.text = @"SAMSUNG";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
          else
          {
              cell.text = @"SONY";
              UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)];
              aField.placeholder = @"Mandatory";
              aField.delegate = self;
              aField.textColor = [UIColor blackColor];
              [cell addSubview:aField];
              [aField release];
          }
      }
   }

  return cell;
}

enter image description here

Solution

actually when you scroll then other rows are created in case you having more rows,so think you need to write this code like this,

Edited one

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
    {
         NSLog(@"CELL IS NIL %i", indexPath.section);

      static NSString *CellIdentifier = @"Cell";
if (cell == nil) 
    {

        CGRect CellFrame = CGRectMake(0, 0, 300, 70);
        cell = [[[UITableViewCell alloc] initWithFrame:CellFrame reuseIdentifier:CellIdentifier] autorelease];
        CGRect labLabelFrame = CGRectMake(5, 5, 250, 40);
        UILabel *lblTemp;

        lblTemp = [[UILabel alloc] initWithFrame:labLabelFrame];
        lblTemp.tag = 1;
        [cell.contentView addSubview:lblTemp];
        [lblTemp release];

        CGRect textFieldFrame= CGRectMake(200, 5, 120, 30);

        UITextField *txt=[[UITextField alloc] initWithFrame:textFieldFrame];
        text.tag=2;
        [cell.contentView addSubview:txt];
        [txt release];

    }
     UILabel *cellLabel = (UILabel *)[cell viewWithTag:1];
      UITextField *aField=(UITextField *)[cell viewWithTag:2];

    aField.text=@"";
    aField.placeholder=@"";
if (indexPath.section == 0)
              {
                  if(indexPath.row == 0)
                  {
                      cellLabel.text = @"Tmail";


                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];

                  }
                  else if ( indexPath.row == 1 )
                  {
                      cellLabel.text = @"English";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];


                  }
                  else
                  {
                      cellLabel.text = @"Hindi";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];


                  }
              }
              else if (indexPath.section == 1)
              {
                  if(indexPath.row == 0)
                  {
                      cellLabel.text = @"Street";


                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];

                  }
                  else if ( indexPath.row == 1 )
                  {
                      cellLabel.text = @"City";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];


                  }
                  else
                  {
                      cellLabel.text = @"State";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];

                  }
              }
              else if (indexPath.section == 2)
              {
                  if(indexPath.row == 0)
                  {
                      cellLabel.text = @"Salem";
                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];

                  }
                  else if ( indexPath.row == 1 )
                  {
                      cellLabel.text = @"Samalpatti";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];


                  }
                  else
                  {
                      cellLabel.text = @"Chennai";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];


                  }
              }

              else if (indexPath.section == 3)
              {
                  if(indexPath.row == 0)
                  {
                      cellLabel.text = @"NOKIA";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];

                  }
                  else if ( indexPath.row == 1)
                  {
                      cellLabel.text = @"SAMSUNG";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];


                  }
                  else
                  {
                      cellLabel.text = @"SONY";

                      aField.placeholder = @"Mandatory";
                      aField.delegate = self;
                      aField.textColor = [UIColor blackColor];

                  }
              }


          return cell;
        }