如何在具有动态布局变体的 ALV 中显示 itab

Question

我正在使用类CL_GUI_ALV_GRID和dynpro屏幕通过ALV工具显示内部表格。

在我的选择屏幕中，我有一个下拉列表，用户可以在其中为显示的内部表选择布局变体。布局变体存储在表LTDX 中。

现在，回到我的问题，如何根据用户的选择显示变体？

Answer 1

您在初始set_table_for_first_display方法中提供 is_variant 参数：

DATA: ls_variant TYPE disvariant.

CLEAR: ls_variant.
ls_variant-report   = sy-repid.
ls_variant-variant  = pa_varid. "<<< this is the name of the variant
CALL METHOD gro_alv100->set_table_for_first_display
      EXPORTING
        is_variant                    = ls_variant
        ...

编辑：好的，你不接受简单的答案，所以我将添加手动替代方案：

FORM set_variant USING ps_variant TYPE disvariant.
  DATA: lf_user_specific TYPE char1,
        ls_stable  TYPE lvc_s_stbl VALUE 'XX'.
  CHECK ps_variant-variant IS NOT INITIAL.
  lf_user_specific = boolc( ps_variant-variant(1) <> '/' ).
  CALL FUNCTION 'LVC_VARIANT_SELECT'
    EXPORTING
      i_dialog            = space
      i_user_specific     = lf_user_specific
      i_default           = space
      it_default_fieldcat = gt_fcat
    IMPORTING
      et_fieldcat         = gt_fcat
      et_sort             = gt_sort
      et_filter           = gt_filter 
    TABLES
      it_data             = gt_outtab
    CHANGING
      cs_variant          = ps_variant
    EXCEPTIONS
      wrong_input         = 1
      fc_not_complete     = 2
      not_found           = 3
      program_error       = 4
      data_missing        = 5
      OTHERS              = 6.
  IF sy-subrc <> 0.
  ENDIF.
  gro_alv100->set_variant( EXPORTING is_variant = ps_variant ).
  gro_alv100->set_frontend_fieldcatalog( EXPORTING it_fieldcatalog = gt_fcat ).
  gro_alv100->set_sort_criteria( EXPORTING it_sort = gt_sort ).
  gro_alv100->set_filter_criteria( EXPORTING it_filter = gt_filter ).
  gro_alv100->refresh_table_display( EXPORTING is_stable = ls_stable i_soft_refresh = abap_false ).
ENDFORM.