Recycling objects (alv-grid)

Question

Hi gurus.
I must get seven different grids (seven different totals) starting from a gui.
I wouldnu2019t wish to declare seven containers and seven alv-grid, I would prefer declare only one time both objects. So every time I use the FREE instruction and then the CREATE again:
  DATA: r_cont_2   TYPE REF TO cl_gui_custom_container,
        r_alv_2    TYPE REF TO cl_gui_alv_grid,
        gs_layout2 TYPE lvc_s_layo.
  IF NOT r_cont_2 IS INITIAL.
    FREE r_cont_2.
    CLEAR r_cont_2.
  ENDIF.
  IF NOT r_alv_2 IS INITIAL.
    FREE r_alv_2.
    CLEAR r_alv_2.
  ENDIF.
  CREATE OBJECT r_cont_2
     EXPORTING
         container_name = 'SCR_TXT2'.
  CREATE OBJECT r_alv_2
   EXPORTING
       i_parent = r_cont_2.
  CASE ok_code.
    WHEN '1'.
      CALL METHOD r_alv_2->set_table_for_first_display
       EXPORTING
           is_layout = gs_layout2
       CHANGING
           it_fieldcatalog = it_fdcat  u201C <<< Changed for table 1!!!
           it_outtab = it_tab1         u201C <<< Table 1
       EXCEPTIONS
           OTHERS = 4.
    WHEN '2'.
      CALL METHOD r_alv_2->set_table_for_first_display
       EXPORTING
           is_layout = gs_layout2
       CHANGING
           it_fieldcatalog = it_fdcat  u201C <<< Changed for table 2!!!
           it_outtab = it_tab2         u201C <<< Table 2
       EXCEPTIONS
           OTHERS = 4.
u2026u2026..
ENDCASE.
When I get the first output,  I get the first grid correct (any table, everything is ok). When I get the second output and over, I see the first table again. In debug mode I can see the second new table correctly when I call the method, and I can see the objects full before the FREE instruction, and empty after.
Is there a solution, or must I declare seven alv-grid?
Must I declare seven containers too?
Thanks for you replies.

Answer 1

Hi ,
Use one instance for alv and container . Change fieldcat , layout using SET_FRONTEND_FIELDCATALOG
SET_FRONTEND_LAYOUT methods , than refresh grid.