A Simple ABAP ALV LIST VIEWER Example

This ALV program have all the basic report requirements such as page heading, page no, sub-total and a grand total.

* This is a basic ALV with the followings:-
* - Page Heading
* - Page No
* - Sub-Total
* - Grand Total

REPORT ZALV.

TYPE-POOLS: SLIS.

DATA: G_REPID LIKE SY-REPID,
GS_PRINT TYPE SLIS_PRINT_ALV,
GT_LIST_TOP_OF_PAGE TYPE SLIS_T_LISTHEADER,
GT_EVENTS TYPE SLIS_T_EVENT,
GT_SORT TYPE SLIS_T_SORTINFO_ALV,
GS_LAYOUT TYPE SLIS_LAYOUT_ALV,
GT_FIELDCAT TYPE SLIS_T_FIELDCAT_ALV,
FIELDCAT_LN LIKE LINE OF GT_FIELDCAT,
COL_POS TYPE I.

DATA: BEGIN OF ITAB,
FIELD1(5) TYPE C,
FIELD2(5) TYPE C,
FIELD3(5) TYPE P DECIMALS 2,
END OF ITAB.

DATA: BEGIN OF ITAB1 OCCURS 0.
INCLUDE STRUCTURE ITAB.
DATA: END OF ITAB1.

DATA: BEGIN OF ITAB_FIELDCAT OCCURS 0.
INCLUDE STRUCTURE ITAB.
DATA: END OF ITAB_FIELDCAT.

* Print Parameters
PARAMETERS:
P_PRINT AS CHECKBOX DEFAULT ' ', "PRINT IMMEDIATE
P_NOSINF AS CHECKBOX DEFAULT 'X', "NO SELECTION INFO
P_NOCOVE AS CHECKBOX DEFAULT ' ', "NO COVER PAGE
P_NONEWP AS CHECKBOX DEFAULT ' ', "NO NEW PAGE
P_NOLINF AS CHECKBOX DEFAULT 'X', "NO PRINT LIST INFO
P_RESERV TYPE I. "NO OF FOOTER LINE

INITIALIZATION.
G_REPID = SY-REPID.
PERFORM PRINT_BUILD USING GS_PRINT. "Print PARAMETERS

START-OF-SELECTION.
* TEST DATA
MOVE 'TEST1' TO ITAB1-FIELD1.
MOVE 'TEST1' TO ITAB1-FIELD2.
MOVE '10.00' TO ITAB1-FIELD3.
APPEND ITAB1.

MOVE 'TEST2' TO ITAB1-FIELD1.
MOVE 'TEST2' TO ITAB1-FIELD2.
MOVE '20.00' TO ITAB1-FIELD3.
APPEND ITAB1.

DO 50 TIMES.
APPEND ITAB1.
ENDDO.

END-OF-SELECTION.

PERFORM BUILD.
PERFORM EVENTTAB_BUILD CHANGING GT_EVENTS.
PERFORM COMMENT_BUILD CHANGING GT_LIST_TOP_OF_PAGE.
PERFORM CALL_ALV.

FORM BUILD.
* DATA FIELD CATALOG
* Explain Field Description to ALV
DATA: FIELDCAT_IN TYPE SLIS_FIELDCAT_ALV.

CLEAR FIELDCAT_IN.
FIELDCAT_LN-FIELDNAME = 'FIELD1'.
FIELDCAT_LN-TABNAME = 'ITAB1'.
*FIELDCAT_LN-NO_OUT = 'X'. "FIELD NOT DISPLAY, CHOOSE FROM LAYOUT
FIELDCAT_LN-KEY = ' '. "SUBTOTAL KEY
FIELDCAT_LN-NO_OUT = ' '.
FIELDCAT_LN-SELTEXT_L = 'HEAD1'.
APPEND FIELDCAT_LN TO GT_FIELDCAT.

CLEAR FIELDCAT_IN.
FIELDCAT_LN-FIELDNAME = 'FIELD2'.
FIELDCAT_LN-TABNAME = 'ITAB1'.
FIELDCAT_LN-NO_OUT = 'X'.
FIELDCAT_LN-SELTEXT_L = 'HEAD2'.
APPEND FIELDCAT_LN TO GT_FIELDCAT.

CLEAR FIELDCAT_IN.
FIELDCAT_LN-FIELDNAME = 'FIELD3'.
FIELDCAT_LN-TABNAME = 'ITAB1'.
FIELDCAT_LN-REF_FIELDNAME = 'MENGE'. "<- REF FIELD IN THE DICTIONNARY
FIELDCAT_LN-REF_TABNAME = 'MSEG'. "<- REF TABLE IN THE DICTIONNARY
FIELDCAT_LN-NO_OUT = ' '.
FIELDCAT_LN-DO_SUM = 'X'. "SUM UPON DISPLAY
APPEND FIELDCAT_LN TO GT_FIELDCAT.

* DATA SORTING AND SUBTOTAL
DATA: GS_SORT TYPE SLIS_SORTINFO_ALV.

CLEAR GS_SORT.
GS_SORT-FIELDNAME = 'FIELD1'.
GS_SORT-SPOS = 1.
GS_SORT-UP = 'X'.
GS_SORT-SUBTOT = 'X'.
APPEND GS_SORT TO GT_SORT.

CLEAR GS_SORT.
GS_SORT-FIELDNAME = 'FIELD2'.
GS_SORT-SPOS = 2.
GS_SORT-UP = 'X'.
*GS_SORT-SUBTOT = 'X'.
APPEND GS_SORT TO GT_SORT.

ENDFORM.

FORM CALL_ALV.
* ABAP List Viewer
CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
EXPORTING
* I_INTERFACE_CHECK = ' '
* I_BYPASSING_BUFFER =
* I_BUFFER_ACTIVE = ' '
I_CALLBACK_PROGRAM = G_REPID
* I_CALLBACK_PF_STATUS_SET = ' '
* I_CALLBACK_USER_COMMAND = ' '
I_STRUCTURE_NAME = 'ITAB1'
IS_LAYOUT = GS_LAYOUT
IT_FIELDCAT = GT_FIELDCAT[]
* IT_EXCLUDING =
* IT_SPECIAL_GROUPS =
IT_SORT = GT_SORT[]
* IT_FILTER =
* IS_SEL_HIDE =
* I_DEFAULT = 'X'
* I_SAVE = ' '
* IS_VARIANT =
IT_EVENTS = GT_EVENTS[]
* IT_EVENT_EXIT =
IS_PRINT = GS_PRINT
* IS_REPREP_ID =
* I_SCREEN_START_COLUMN = 0
* I_SCREEN_START_LINE = 0
* I_SCREEN_END_COLUMN = 0
* I_SCREEN_END_LINE = 0
* IMPORTING
* E_EXIT_CAUSED_BY_CALLER =
* ES_EXIT_CAUSED_BY_USER =
TABLES
T_OUTTAB = ITAB1
EXCEPTIONS
PROGRAM_ERROR = 1
OTHERS = 2.
ENDFORM.

* HEADER FORM
FORM EVENTTAB_BUILD CHANGING LT_EVENTS TYPE SLIS_T_EVENT.
CONSTANTS:
GC_FORMNAME_TOP_OF_PAGE TYPE SLIS_FORMNAME VALUE 'TOP_OF_PAGE'.
*GC_FORMNAME_END_OF_PAGE TYPE SLIS_FORMNAME VALUE 'END_OF_PAGE'.

DATA: LS_EVENT TYPE SLIS_ALV_EVENT.

CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
EXPORTING
I_LIST_TYPE = 0
IMPORTING
ET_EVENTS = LT_EVENTS.

READ TABLE LT_EVENTS WITH KEY NAME = SLIS_EV_TOP_OF_PAGE
INTO LS_EVENT.
IF SY-SUBRC = 0.
MOVE GC_FORMNAME_TOP_OF_PAGE TO LS_EVENT-FORM.
APPEND LS_EVENT TO LT_EVENTS.
ENDIF.

* define END_OF_PAGE event
* READ TABLE LT_EVENTS WITH KEY NAME = SLIS_EV_END_OF_PAGE
* INTO LS_EVENT.
* IF SY-SUBRC = 0.
* MOVE GC_FORMNAME_END_OF_PAGE TO LS_EVENT-FORM.
* APPEND LS_EVENT TO LT_EVENTS.
* ENDIF.
ENDFORM.

FORM COMMENT_BUILD CHANGING GT_TOP_OF_PAGE TYPE SLIS_T_LISTHEADER.
DATA: GS_LINE TYPE SLIS_LISTHEADER.

CLEAR GS_LINE.
GS_LINE-TYP = 'H'.
GS_LINE-INFO = 'HEADER 1'.
APPEND GS_LINE TO GT_TOP_OF_PAGE.

CLEAR GS_LINE.
GS_LINE-TYP = 'S'.
GS_LINE-KEY = 'STATUS 1'.
GS_LINE-INFO = 'INFO 1'.
APPEND GS_LINE TO GT_TOP_OF_PAGE.
GS_LINE-KEY = 'STATUS 2'.
GS_LINE-INFO = 'INFO 2'.
APPEND GS_LINE TO GT_TOP_OF_PAGE.

* CLEAR GS_LINE.
* GS_LINE-TYP = 'A'.
*
* GS_LINE-INFO = 'ACTION'.
* APPEND GS_LINE TO GT_TOP_OF_PAGE.

ENDFORM.

FORM TOP_OF_PAGE.
CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
EXPORTING
IT_LIST_COMMENTARY = GT_LIST_TOP_OF_PAGE.
WRITE: SY-DATUM, 'Page No', SY-PAGNO LEFT-JUSTIFIED.
ENDFORM.

FORM END_OF_PAGE.
WRITE at (sy-linsz) sy-pagno CENTERED.
ENDFORM.

* PRINT SETTINGS
FORM PRINT_BUILD USING LS_PRINT TYPE SLIS_PRINT_ALV.
LS_PRINT-PRINT = P_PRINT. "PRINT IMMEDIATE
LS_PRINT-NO_PRINT_SELINFOS = P_NOSINF. "NO SELECTION INFO
LS_PRINT-NO_COVERPAGE = P_NOCOVE. "NO COVER PAGE
LS_PRINT-NO_NEW_PAGE = P_NONEWP.
LS_PRINT-NO_PRINT_LISTINFOS = P_NOLINF. "NO PRINT LIST INFO
LS_PRINT-RESERVE_LINES = P_RESERV.
ENDFORM.

*END OF ZALV PROGRAM