本文主要是介绍FUNCTION_ALV 下拉框的实现，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
下拉框可以用drdn_field或者使用DRDN_HNDL，这个文章主要是下拉框的基本使用，核心就是在fieldcat内表里面设置好下拉框的字段或者组的编号
文章目录
- drdn_field
- 使用DRDN_HNDL
- 复制状态
- 完整代码
- 核心代码
- 运行结果
drdn_field
使用DRDN_HNDL
复制状态
完整代码
*&---------------------------------------------------------------------*
*& Report Z_ALV_DROPDOWN
*&---------------------------------------------------------------------*
*&---------------------------------------------------------------------*
*T_CODE :
*CREATOR : LiuHongyu
*CREATE ON : 2024年8月27日
*TYPE : Report
*Description : ALV下拉框
**********************************************************************
* Change History
* ---------- ------------- ---------- -------------
* Version Date Change By Description
* ---------- ------------- ---------- -------------
* 1 2024.8.27 Hongyu.Liu 创建
**********************************************************************
REPORT Z_ALV_DROPDOWN.*----------------------Variables--------------------------*
TYPES: BEGIN OF GTY_HEAD,CARRID TYPE SPFLI-CARRID, "航线CONNID TYPE SPFLI-CONNID, "航班号PRICE TYPE SFLIGHT-PRICE, "价格PLANETYPE TYPE SFLIGHT-PLANETYPE, "航班类型DEPTIME TYPE SPFLI-DEPTIME, "出发时间DD_HANDLE TYPE INT4, "用于分辨分组的编号END OF GTY_HEAD.
DATA: GS_HEAD TYPE GTY_HEAD.
TYPES: BEGIN OF GTY_ITEMS,CARRID TYPE SPFLI-CARRID, "航线CONNID TYPE SPFLI-CONNID, "航班号COUNTRYFR TYPE SPFLI-COUNTRYFR, "国家/地区CITYFROM TYPE SPFLI-CITYFROM, "起飞城市CITYTO TYPE SPFLI-CITYTO, "到达城市FLTIME TYPE SPFLI-FLTIME, "航班时间DISTANCE TYPE SPFLI-DISTANCE, "距离CARRNAME TYPE SCARR-CARRNAME, "航线CURRCODE TYPE SCARR-CURRCODE, "航线货币URL TYPE SCARR-URL, "URLEND OF GTY_ITEMS.DATA: BEGIN OF GS_OUT.INCLUDE STRUCTURE GS_HEAD. "抬头
DATA: DETAIL TYPE TABLE OF GTY_ITEMS,END OF GS_OUT.
DATA: GT_OUT LIKE TABLE OF GS_OUT. "定义和GS_OUT工作区结构一样的内表DATA: GT_FIELDCAT TYPE LVC_T_FCAT,GS_FIELDCAT TYPE LVC_S_FCAT.
DATA: GS_LAYOUT TYPE LVC_S_LAYO. "ALV布局工作区DATA:GS_DROP_DOWN TYPE LVC_S_DROP, "下拉框工作区GT_DROP_DOWN TYPE LVC_T_DROP. "下拉框内表*定义事件内表
DATA:GT_EVENTS TYPE SLIS_T_EVENT,GS_EVENTS TYPE SLIS_ALV_EVENT.
*------------------------ Logic -----------------------------*START-OF-SELECTION.PERFORM GET_DATA.PERFORM SET_FIELDCAT.PERFORM ALV_DISPLAY.FORM CALLER_EXIT USING LS_DATA TYPE SLIS_DATA_CALLER_EXIT.DATA: L_REF_ALV TYPE REF TO CL_GUI_ALV_GRID.CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR'IMPORTINGE_GRID = L_REF_ALV.CALL METHOD L_REF_ALV->SET_DROP_DOWN_TABLEEXPORTINGIT_DROP_DOWN = GT_DROP_DOWN.
ENDFORM.*&---------------------------------------------------------------------*
*& Form GET_DATA
*&---------------------------------------------------------------------*
*& text
*&---------------------------------------------------------------------*
*& --> p1 text
*& <-- p2 text
*&---------------------------------------------------------------------*
FORM GET_DATA ."抬头SELECT CARRID,CONNID,PRICE FROM SFLIGHT WHERE CARRID = 'AZ' INTO TABLE @DATA(LT_HEAD) UP TO 20 ROWS."细节SELECT A~CARRID,A~CONNID,COUNTRYFR,CITYFROM,CITYTO,FLTIME,DISTANCE,B~CARRNAME,B~CURRCODE,B~URLFROM SPFLI AS ALEFT JOIN SCARR AS B ON A~CARRID = B~CARRIDFOR ALL ENTRIES IN @LT_HEADWHERE A~CARRID = @LT_HEAD-CARRID INTO TABLE @DATA(LT_ITEMS).LOOP AT LT_ITEMS ASSIGNING FIELD-SYMBOL(<FS_ITEM>).IF <FS_ITEM>-DISTANCE > 100.<FS_ITEM>-DISTANCE = 100.ENDIF.ENDLOOP.LOOP AT LT_HEAD INTO GS_HEAD.APPEND INITIAL LINE TO GT_OUT ASSIGNING FIELD-SYMBOL(<FS_OUT>).<FS_OUT> = CORRESPONDING #( GS_HEAD ).<FS_OUT>-DETAIL = LT_ITEMS.ENDLOOP.
ENDFORM.
*&---------------------------------------------------------------------*
*& Form SET_FIELDCAT
*&---------------------------------------------------------------------*
*& text
*&---------------------------------------------------------------------*
*& --> p1 text
*& <-- p2 text
*&---------------------------------------------------------------------*
FORM SET_FIELDCAT ."""""""""""""""""构建ALV字段""""""""""""""""""""动态字段名称赋值DATA: LO_TABDESCR TYPE REF TO CL_ABAP_STRUCTDESCR.DATA: LS_FIELD_IN TYPE DFIES,LT_DFIES TYPE DDFIELDS.LO_TABDESCR ?= CL_ABAP_STRUCTDESCR=>DESCRIBE_BY_DATA( GS_OUT ).CALL METHOD CL_SALV_DATA_DESCR=>READ_STRUCTDESCREXPORTINGR_STRUCTDESCR = LO_TABDESCRRECEIVINGT_DFIES = LT_DFIES.LOOP AT LT_DFIES INTO LS_FIELD_IN.MOVE-CORRESPONDING LS_FIELD_IN TO GS_FIELDCAT.GS_FIELDCAT-REF_TABLE = LS_FIELD_IN-REFTABLE. "参照类型的表,搜索帮助，域控制GS_FIELDCAT-REF_FIELD = LS_FIELD_IN-REFFIELD. "参照类型字段IF GS_FIELDCAT-COLTEXT IS INITIAL. "当COLTEXT不存在显示SCRTEXT_MGS_FIELDCAT-COLTEXT = LS_FIELD_IN-SCRTEXT_M.ENDIF."设置下拉框的字段IF GS_FIELDCAT-FIELDNAME = 'PLANETYPE'.GS_FIELDCAT-EDIT = 'X'. "可编辑GS_FIELDCAT-DRDN_FIELD = 'DD_HANDLE'. "设置下拉框的字段是DD_HEANDLEENDIF.IF GS_FIELDCAT-FIELDNAME = 'DEPTIME' . "如果是出发时间字段，直接把下拉框分组设置成3GS_FIELDCAT-DRDN_HNDL = '3'. "DRDN_HNDL设置成3GS_FIELDCAT-EMPHASIZE = 'C310'."带有颜色的高亮列ENDIF.IF GS_FIELDCAT-FIELDNAME <> 'DD_HANDLE'.APPEND GS_FIELDCAT TO GT_FIELDCAT.ENDIF.CLEAR: LS_FIELD_IN,GS_FIELDCAT.ENDLOOP.ENDFORM.
*&---------------------------------------------------------------------*
*& Form ALV_DISPLAY
*&---------------------------------------------------------------------*
*& text
*&---------------------------------------------------------------------*
*& --> p1 text
*& <-- p2 text
*&---------------------------------------------------------------------*
FORM ALV_DISPLAY ."""""""""""""""""设置布局""""""""""""""""""GS_LAYOUT-ZEBRA = 'X'.GS_LAYOUT-CWIDTH_OPT = 'X'.""""""""""""""设置事件"""""""""""""""""""""
**把使 GRID 和 内表 连接在一起的事件存入事件内表GS_EVENTS-NAME = 'CALLER_EXIT'. "这里是子例程名字GS_EVENTS-FORM = 'CALLER_EXIT'. "这里是子例程名字APPEND GS_EVENTS TO GT_EVENTS."""""""""""""""""设置下拉框"""""""""""""""""""设置分组的字段的值LOOP AT GT_OUT INTO GS_OUT.IF GS_OUT-CONNID = '0555'.GS_OUT-DD_HANDLE = '1'.ELSE.GS_OUT-DD_HANDLE = '2'.ENDIF.MODIFY GT_OUT FROM GS_OUT.CLEAR GS_OUT.ENDLOOP."设置下拉框DEFINE FILL_DROP.CLEAR GS_DROP_DOWN.GS_DROP_DOWN-HANDLE = &1.GS_DROP_DOWN-VALUE = &2.APPEND GS_DROP_DOWN TO GT_DROP_DOWN.END-OF-DEFINITION.FILL_DROP:'1' '大飞机'.FILL_DROP:'1' '小飞机'.FILL_DROP:'1' '中飞机'.FILL_DROP:'1' '漂亮飞机'.FILL_DROP:'1' '直升机'.FILL_DROP:'1' '战斗飞机'.FILL_DROP:'2' 'A飞机'.FILL_DROP:'2' 'B飞机'.FILL_DROP:'2' 'C飞机'.FILL_DROP:'3' '2024-08-01'.FILL_DROP:'3' '2024-08-02'.FILL_DROP:'3' '2024-08-03'.FILL_DROP:'3' '2024-08-07'."""""""""""""""""创建ALV"""""""""""""""""""CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'EXPORTING
* I_INTERFACE_CHECK = ' '
* I_BYPASSING_BUFFER = I_BYPASSING_BUFFER
* I_BUFFER_ACTIVE = I_BUFFER_ACTIVEI_CALLBACK_PROGRAM = SY-REPID
* I_CALLBACK_PF_STATUS_SET = ' '
* I_CALLBACK_USER_COMMAND = ' '
* I_CALLBACK_TOP_OF_PAGE = ' '
* I_CALLBACK_HTML_TOP_OF_PAGE = ' '
* I_CALLBACK_HTML_END_OF_LIST = ' '
* I_STRUCTURE_NAME = I_STRUCTURE_NAME
* I_BACKGROUND_ID = ' '
* I_GRID_TITLE = I_GRID_TITLE
* I_GRID_SETTINGS = I_GRID_SETTINGSIS_LAYOUT_LVC = GS_LAYOUTIT_FIELDCAT_LVC = GT_FIELDCAT
* IT_EXCLUDING = IT_EXCLUDING
* IT_SPECIAL_GROUPS_LVC = IT_SPECIAL_GROUPS_LVC
* IT_SORT_LVC = IT_SORT_LVC
* IT_FILTER_LVC = IT_FILTER_LVC
* IT_HYPERLINK = IT_HYPERLINK
* IS_SEL_HIDE = IS_SEL_HIDE
* I_DEFAULT = 'X'
* I_SAVE = ' '
* IS_VARIANT = IS_VARIANTIT_EVENTS = GT_EVENTS
* IT_EVENT_EXIT = IT_EVENT_EXIT
* IS_PRINT_LVC = IS_PRINT_LVC
* IS_REPREP_ID_LVC = IS_REPREP_ID_LVC
* I_SCREEN_START_COLUMN = 0
* I_SCREEN_START_LINE = 0
* I_SCREEN_END_COLUMN = 0
* I_SCREEN_END_LINE = 0
* I_HTML_HEIGHT_TOP = I_HTML_HEIGHT_TOP
* I_HTML_HEIGHT_END = I_HTML_HEIGHT_END
* IT_ALV_GRAPHICS = IT_ALV_GRAPHICS
* IT_EXCEPT_QINFO_LVC = IT_EXCEPT_QINFO_LVC
* IR_SALV_FULLSCREEN_ADAPTER = IR_SALV_FULLSCREEN_ADAPTER
* IMPORTING
* E_EXIT_CAUSED_BY_CALLER = E_EXIT_CAUSED_BY_CALLER
* ES_EXIT_CAUSED_BY_USER = ES_EXIT_CAUSED_BY_USERTABLEST_OUTTAB = GT_OUT
* EXCEPTIONS
* PROGRAM_ERROR = 1
* OTHERS = 2.IF SY-SUBRC <> 0.
* Implement suitable error handling hereENDIF.
ENDFORM.
核心代码
运行结果
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