Dump when run in background an ALV with splitter container

[Former Member]

Hi all

I have a problem when I attempt to run in background an ALV that use a splitter container. When I run this ALV in backgroung SAP return a dump with the error

" Access not possible using 'NULL' object reference" and the dump was produced in the method:

     CALL METHOD v_o_splitter->get_container
        EXPORTING
          row       = v_lcont
          column    = 1
        RECEIVING
          container = x_o_contgrid-cont.
 

I'm using the object cl_gui_splitter_container and the following code to generate the container and split it.

* Create instance for custom container
  IF v_o_container IS INITIAL.

    CREATE OBJECT v_o_container
      EXPORTING
         container_name              = c_container
      EXCEPTIONS
        cntl_error                  = 1
        cntl_system_error           = 2
        create_error                = 3
        lifetime_error              = 4
        lifetime_dynpro_dynpro_link = 5
        OTHERS                      = 6.

    IF sy-subrc <> 0.
      MESSAGE ID     sy-msgid
              TYPE   sy-msgty
              NUMBER sy-msgno
              WITH   sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
    ENDIF.


*   If both alv's have been selected an spliter object should be
*   created.
    CREATE OBJECT v_o_splitter
           EXPORTING parent = v_o_container
                     rows = v_rows
                     columns = 1
    EXCEPTIONS
      cntl_error        = 1
      cntl_system_error = 2
      OTHERS            = 3.

    IF sy-subrc <> 0.
      MESSAGE ID     sy-msgid
              TYPE   sy-msgty
              NUMBER sy-msgno
              WITH   sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
    ENDIF.

    DO v_rows TIMES.

      FIND abap_true IN v_list MATCH OFFSET v_auxpos.
      CHECK sy-subrc = 0.

      v_list+v_auxpos(1) = space.
      v_aux = v_auxpos + 1.

      CALL METHOD v_o_splitter->get_container
        EXPORTING
          row       = v_lcont
          column    = 1
        RECEIVING
          container = x_o_contgrid-cont.

      CREATE OBJECT x_o_contgrid-grid
          EXPORTING
            i_parent = x_o_contgrid-cont.

      CONCATENATE 'i_alv_'      v_aux INTO x_o_contgrid-table.
      CONCATENATE 'i_catalog_'  v_aux INTO x_o_contgrid-catalog.
      CONCATENATE 'x_layout_'   v_aux INTO x_o_contgrid-layout.
      CONCATENATE 'ZHRPG007_'   v_aux INTO x_o_contgrid-structure.

      APPEND x_o_contgrid TO i_o_contgrid.

      v_lcont = v_lcont + 1.
      CLEAR x_o_contgrid.

    ENDDO.

Thanks in advance.

[Former Member]

hi,

When the Control Framework is started, the system checks whether the installed GUI supports frontend components such as controls. This check failed as the program is running in the background.

Programs that run in the background cannot address controls on the frontend. In this case, the application must either include a fallback that does not depend on the user interface.

if you execute any standard control example like RSDEMO_SPLITTER_CONTROL in background,youwill get the same error.

Regards,

Richa.

[Former Member]

Thanks for your help Richa.

Regards,

Raul.