ALV object in function module shows old data

[Former Member]

Hello,

I create a function module with import parameter matnr.

This function module calls a screen that displays an ALV with the whole info of matnr out of table mara.

I include this in a program where a material can be selected. This is then input for the function module. Everything looks good for the first material. However when the function module is called for a second material I still see the ALV with the data of the previous material.

When I debug the code I see that new data is selected and put on the alv (with method set_table_for_first_display) but still I see the old ALV (which I free by the way in the exit of my function module...). It drives me crazy, what's the problem?

<b>My function module:

</b>

FUNCTION ZJVB_TEST.
*"----------------------------------------------------------------------
*"*"Lokale interface:
*"  IMPORTING
*"     REFERENCE(I_MATNR) TYPE  MATNR
*"----------------------------------------------------------------------

g_matnr = i_matnr.
call SCREEN 1979.
ENDFUNCTION.

<b>TOP include:</b>

FUNCTION-POOL ZJVB_TEST.                    "MESSAGE-ID ..

data: ok_code type sy-ucomm,
      container type ref to cl_gui_custom_container,
      alv type ref to cl_gui_alv_grid,
      g_matnr type matnr.

*&---------------------------------------------------------------------*
*&      Module  STATUS_1979  OUTPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE STATUS_1979 OUTPUT.
  SET PF-STATUS 'FMAIN'.
*  SET TITLEBAR 'xxx'.

  if container is INITIAL.
    CREATE OBJECT CONTAINER
      EXPORTING
        CONTAINER_NAME              = 'CONTAINER'    .


    CREATE OBJECT ALV
      EXPORTING
        I_PARENT          = container.

    data: itab type TABLE OF mara.

    select *
      from mara
      into TABLE itab
      where matnr = g_matnr.

    CALL METHOD ALV->SET_TABLE_FOR_FIRST_DISPLAY
      EXPORTING
         I_STRUCTURE_NAME              = 'MARA'
      CHANGING
        IT_OUTTAB                     = itab.
  endif.

ENDMODULE.                 " STATUS_1979  OUTPUT
*&---------------------------------------------------------------------*
*&      Module  USER_COMMAND_1979  INPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE USER_COMMAND_1979 INPUT.

  case ok_code.
    when 'BACK'.
      free container.
      free alv.
      LEAVE to SCREEN 0.
  ENDCASE.

ENDMODULE.                 " USER_COMMAND_1979  INPUT

<b>My program:</b>

*&---------------------------------------------------------------------*
*& Report  ZJEROEN_ALV_FM
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT  ZJEROEN_ALV_FM.

data: ok_code type sy-ucomm,
      l_matnr type matnr.

call SCREEN 1979.
*&---------------------------------------------------------------------*
*&      Module  STATUS_1979  OUTPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE STATUS_1979 OUTPUT.
  SET PF-STATUS 'MAIN'.
*  SET TITLEBAR 'xxx'.

ENDMODULE.                 " STATUS_1979  OUTPUT
*&---------------------------------------------------------------------*
*&      Module  USER_COMMAND_1979  INPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE USER_COMMAND_1979 INPUT.

case ok_code.
  when 'BACK'.
    leave to screen 0.
  when 'CALL'.
      CALL FUNCTION 'ZJVB_TEST'
      EXPORTING
                i_matnr = l_matnr.
endcase.

ENDMODULE.                 " USER_COMMAND_1979  INPUT

Thx for helping,

jeroen

[Former Member]

Hi Jeroen,

Try using following methods, you put them at the end of MODULE STATUS_1979 OUTPUT

call method alv_grid->refresh_table_display.

call method cl_gui_cfw=>flush.

Best regards,

Dirk.

[Former Member]

Hi

<b>Refresh</b> your internal table <b>itab</b> before populating it with data from MARA table.

Regards,

Raj

[Former Member]

Hello,

I found out that the container lifetime was the problem... When you create a container to put the ALV in the lifetime is set to default. Normally you never change this, I didn't mention it before I had the problem. But you have to change the lifetime to <your_instance_name>->lifetime_dynpro for instance my_container->lifetime_dynpro.

Also check this helplink: http://help.sap.com/saphelp_nw04/helpdata/en/9b/d080b79fc111d2bd68080009b4534c/frameset.htm

[Former Member]

I had the same problem and solved it with this. Thank you.

CREATE OBJECT g_container2 EXPORTING

      container_name = container2

      lifetime = cl_gui_container=>lifetime_dynpro.

[former_member186494]

I think when you call the function second time, the program would not go into "if container is INITIAL." condition in the PBO of screen 1979.

You can try to set a breakpoint to check this.

I think you can put the select statement before "call screen".