在做类的ALV显示时，我们会设置ALV的LAYOUT参数，使用CWIDTH_OPT = ‘X’.来实现ALV显示时的自动宽度，但发现在多个屏幕跳转后，ALV刷新后，再次显示ALV时，此参数不起作用，ALV不能自动宽度来显示，
1.解决办法
在再次显示ALV时，刷新前重新设置一下自动宽度的参数 ，并重设置一下就行了，OO ALV完整显示代码如下：
代码中使用GET_FRONTEND_LAYOUT得到当前的LAYOUT参数，并重设置CWIDTH_OPT = ‘X’，最后调用SET_FRONTEND_LAYOUT设置一下参数 ，结果就对了。
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MODULE INIT_ALV_0200 OUTPUT. CLEAR:LS_LAYOUT. IF GO_ALV_200 IS INITIAL. PERFORM FRM_EXCLUDE_TB_FUNCTIONS CHANGING LT_EXCLUDE. PERFORM FRM_SET_FIELDCAT USING '2'. CREATE OBJECT GO_CUSTOMER_200 EXPORTING CONTAINER_NAME = 'CONTAINER_200'. CREATE OBJECT GO_ALV_200 EXPORTING I_PARENT = GO_CUSTOMER_200. LS_LAYOUT-CWIDTH_OPT = 'X'. LS_LAYOUT-SEL_MODE = 'A'. LS_VARIANT-REPORT = SY-REPID. CALL METHOD GO_ALV_200->SET_TABLE_FOR_FIRST_DISPLAY EXPORTING IS_LAYOUT = LS_LAYOUT IT_TOOLBAR_EXCLUDING = LT_EXCLUDE I_SAVE = 'U' IS_VARIANT = LS_VARIANT CHANGING IT_FIELDCATALOG = GT_FCAT_200 IT_OUTTAB = GT_OUT_200. CREATE OBJECT GO_EVENT_200. SET HANDLER GO_EVENT_200->HAND_DOUBLE_CLICK FOR GO_ALV_200. SET HANDLER GO_EVENT_200->HANDLE_DATA_CHANGED FOR GO_ALV_200. CALL METHOD GO_ALV_200->SET_TOOLBAR_INTERACTIVE. CALL METHOD GO_ALV_200->REGISTER_EDIT_EVENT EXPORTING I_EVENT_ID = CL_GUI_ALV_GRID=>MC_EVT_MODIFIED. CALL METHOD GO_ALV_200->REGISTER_EDIT_EVENT EXPORTING I_EVENT_ID = CL_GUI_ALV_GRID=>MC_EVT_ENTER. ELSE. GO_ALV_200->GET_FRONTEND_LAYOUT( IMPORTING ES_LAYOUT = LS_LAYOUT ). LS_LAYOUT-CWIDTH_OPT = 'X'. GO_ALV_200->SET_FRONTEND_LAYOUT( IS_LAYOUT = LS_LAYOUT ). CALL METHOD GO_ALV_200->REFRESH_TABLE_DISPLAY EXCEPTIONS FINISHED = 1 OTHERS = 2. IF SY-SUBRC <> 0. MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO INTO MSGTEXT WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4. ENDIF. ENDIF. ENDMODULE. |
