不定义Screen使用alv class

将alv class的parent设为 cl_gui_container=>screen0.  表示第0个层次的屏幕.

 

1. 在报表中显示:

TABLES zstudent.
DATA itab LIKE TABLE OF zstudent.
DATA grid TYPE REF TO cl_gui_alv_grid.

START-OF-SELECTION.

  SELECT * FROM zstudent INTO TABLE itab.
  CREATE OBJECT grid
    EXPORTING
      i_parent          = cl_gui_container=>screen0     .

 

  CALL METHOD grid->set_table_for_first_display
    EXPORTING
      i_structure_name = 'ZSTUDENT'
    CHANGING
      it_outtab        = itab.
     
  WRITE ''. 

 

 

 

2. 在选择屏幕中显示:

REPORT  z_temp_demo.
TABLES zstudent.
DATA itab LIKE TABLE OF zstudent.
DATA grid TYPE REF TO cl_gui_alv_grid.

SELECTION-SCREEN BEGIN OF SCREEN 9999.
SELECTION-SCREEN END OF SCREEN 9999.

 

START-OF-SELECTION.

  SELECT * FROM zstudent INTO TABLE itab.
  CREATE OBJECT grid
    EXPORTING
      i_parent          = cl_gui_container=>screen0     .

 

  CALL METHOD grid->set_table_for_first_display
    EXPORTING
      i_structure_name = 'ZSTUDENT'
    CHANGING
      it_outtab        = itab.

  CALL SELECTION-SCREEN 9999.