ALV Group and Sort

Question

Hi,
I am sorting the ALV Display on the basis of Assignment Field. It is getting sorted, but it is displaying the value in all the lines/rows. I want to display it only once(the first row) if the value is same.
Also, the first line of the ALV Output is a checkbox.
At present the check-box is displayed in all the rows.
My requirement is to display the check-box once for every new Assignment. So, if there are 5 rows with the same Assignment Value then only one check-box should appear, either in the first or fifth row.
Your help will be definitely appreciated.
Thanks,
~ Payel

Answer 1

There is no Direct solution in this case....
1. Hade one extra field of type lenght 4 chars.
2. populate the ICON value for unselected checkbox.
3. Change the Fieldcatalog for the field which is added in step1.
4. Populate the sort information.
5. Handle the usercommand to check or uncheck based on action.
Check the sample code..
REPORT  zalv_total_sub.
TYPE-POOLS: slis.
INCLUDE <icon>.
DATA: BEGIN OF it_flight OCCURS 0,
       carrid  LIKE sflight-carrid,
       connid   LIKE sflight-connid,
       fldate   LIKE sflight-fldate,
       seatsmax LIKE sflight-seatsmax,
       seatsocc LIKE sflight-seatsocc,
              check(4),             "Step1
      END OF it_flight.
DATA: it_fieldcat TYPE  slis_t_fieldcat_alv,
      wa_fcat LIKE LINE OF it_fieldcat,
      layout TYPE  slis_layout_alv.
DATA: it_sort TYPE  slis_t_sortinfo_alv,
       wa_sort LIKE LINE OF it_sort.
CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
  EXPORTING
    i_program_name         = sy-repid
    i_internal_tabname     = 'IT_FLIGHT'
    i_inclname             = sy-repid
  CHANGING
    ct_fieldcat            = it_fieldcat
  EXCEPTIONS
    inconsistent_interface = 1
    program_error          = 2.
SELECT  carrid
       connid
       fldate
       seatsmax
       seatsocc
FROM sflight
INTO CORRESPONDING FIELDS OF TABLE it_flight
SORT it_flight BY carrid.
"Step 2....
LOOP AT it_flight.
  it_flight-check = icon_wd_iframe.
  MODIFY it_flight.
ENDLOOP.
wa_fcat-do_sum = 'X'.
MODIFY it_fieldcat FROM wa_fcat TRANSPORTING do_sum
WHERE fieldname = 'SEATSOCC' .
CLEAR wa_fcat.
"Step3...
wa_fcat-hotspot = 'X'.
wa_fcat-icon = 'X'.
wa_fcat-col_pos = 1.
MODIFY it_fieldcat FROM wa_fcat TRANSPORTING col_pos icon hotspot
WHERE fieldname = 'CHECK' .
wa_sort-fieldname = 'CARRID'.
wa_sort-up = 'X'.
wa_sort-subtot = 'X'.
APPEND wa_sort TO it_sort.
" Step 4.
CLEAR wa_sort.
wa_sort-fieldname = 'CHECK'.
wa_sort-up = 'X'.
APPEND wa_sort TO it_sort.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
  EXPORTING
    i_callback_program      = sy-repid
    i_callback_user_command = 'USER_COMMAND'  "Step5
    is_layout               = layout
    it_fieldcat             = it_fieldcat
    it_sort                 = it_sort
  TABLES
    t_outtab                = it_flight
  EXCEPTIONS
    program_error           = 1.
"Step 5 implementation.
FORM user_command USING ucomm TYPE sy-ucomm
selfield TYPE slis_selfield.
  CASE ucomm.
    WHEN '&IC1'.
      CASE selfield-fieldname.
        WHEN 'CHECK'.
          READ TABLE it_flight INDEX selfield-tabindex.
          IF sy-subrc EQ 0.
            IF it_flight-check = icon_checkbox.
              it_flight-check = icon_wd_iframe.
            ELSE.
              it_flight-check = icon_checkbox.
            ENDIF.
            MODIFY it_flight  TRANSPORTING check
             WHERE carrid = it_flight-carrid.
          ENDIF.
      ENDCASE.
  ENDCASE.
  selfield-refresh = 'X'.
ENDFORM.                    "user_command
Check it and let me know if any issues with the code.