ABAP-ALV可编辑字段没有传入内表详解编程语言

问题：在ALV界面中输入可编辑字段的值，点击保存按钮，这个值并没有传入程序内表。

解决方法：在点击按钮的操作之后加入获取屏幕值的方法。

CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR' 
        IMPORTING 
          E_GRID = LR_GRID. 
CALL METHOD LR_GRID->CHECK_CHANGED_DATA.

 一个具体使用场景：

FORM FRM_USER_COMMAND USING R_UCOMM LIKE SY-UCOMM 
                             RS_SELFIELD TYPE SLIS_SELFIELD. 
  READ TABLE GT_ALV INTO WA_ALV INDEX RS_SELFIELD-TABINDEX. 
  CHECK SY-SUBRC = 0. 
 
  DATA: LR_GRID TYPE REF TO CL_GUI_ALV_GRID, 
        MYINDEX TYPE SY-TABIX. 
 
  CASE R_UCOMM. 
    WHEN '&SAVE'. 
      CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR' 
        IMPORTING 
          E_GRID = LR_GRID. 
      CALL METHOD LR_GRID->CHECK_CHANGED_DATA. 
      RS_SELFIELD-REFRESH = 'X'. 
      PERFORM FRM_SAVEDATA. 
  ENDCASE. 
  RS_SELFIELD-REFRESH = 'X'. 
ENDFORM.