Step1. Here the below Code.
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CLASS lcl_salv_tab DEFINITION.
PUBLIC SECTION.
CLASS-METHODS : main IMPORTING
i_list TYPE xfeld
i_grid TYPE xfeld
i_alv_tb TYPE c,
fetch_records,
get_alv_instance IMPORTING
i_list TYPE xfeld
i_grid TYPE xfeld
i_alv_tb TYPE c,
display_alv.
PRIVATE SECTION.
TYPE-POOLS : icon, sym.
TYPES : BEGIN OF ty_flight,
status TYPE c LENGTH 1,
icon TYPE icon_d, " char - 4
symbol TYPE icon_d. " char - 4
INCLUDE TYPE sflight.
TYPES : END OF ty_flight.
CLASS-DATA : lt TYPE TABLE OF ty_flight,
ls TYPE ty_flight,
lo_salv_tab TYPE REF TO cl_salv_table,
lo_func TYPE REF TO cl_salv_functions_list,
lo_cols TYPE REF TO cl_salv_columns_table,
lo_col TYPE REF TO cl_salv_column,
lo_col_icon TYPE REF TO cl_salv_column,
lo_icon TYPE REF TO cl_salv_column_table,
lo_col_sym TYPE REF TO cl_salv_column,
lo_symbol TYPE REF TO cl_salv_column_table,
rem_seat TYPE i,
lt_icon TYPE TABLE OF icon,
ls_icon TYPE icon.
ENDCLASS.
CLASS lcl_salv_tab IMPLEMENTATION.
METHOD main.
fetch_records( ).
get_alv_instance( EXPORTING i_list = i_list
i_grid = i_grid
i_alv_tb = i_alv_tb ).
display_alv( ).
ENDMETHOD.
METHOD fetch_records.
DATA indx TYPE sy-tabix.
DATA line TYPE i.
SELECT * FROM sflight INTO CORRESPONDING FIELDS OF TABLE lt UP TO 40 ROWS.
line = LINES( lt ).
SELECT * FROM icon INTO TABLE lt_icon UP TO line ROWS.
LOOP AT lt INTO ls.
indx = sy-tabix.
rem_seat = ls-seatsmax_b - ls-seatsocc_b.
IF rem_seat = 0.
ls-status = 1 .
ELSEIF rem_seat LE 10.
ls-status = 2.
ELSE.
ls-status = 3.
ENDIF.
ls-symbol = SYM_CAUTION.
READ TABLE lt_icon INTO ls_icon INDEX indx .
IF sy-subrc = 0.
ls-icon = ls_icon-id.
ENDIF.
IF indx <> 0.
MODIFY LT FROM ls INDEX indx TRANSPORTING status icon symbol.
ENDIF.
CLEAR ls.
ENDLOOP.
ENDMETHOD.
METHOD get_alv_instance.
DATA : flag.
IF i_list = 'X' OR i_grid = 'X'.
IF i_list = 'X'.
flag = 'X'.
ELSE.
flag = ' '.
ENDIF.
TRY.
CALL METHOD cl_salv_table=>factory
EXPORTING
list_display = flag
IMPORTING
r_salv_table = lo_salv_tab
CHANGING
t_table = lt.
IF i_alv_tb = abap_true.
**Begin- Displaying toolbar on alv **
CALL METHOD lo_salv_tab->get_functions " Get the instance of "alv toolbal button
RECEIVING
value = lo_func.
CALL METHOD lo_func->set_default " pass 'TRUE' to display " toolbar on alv
EXPORTING
value = if_salv_c_bool_sap=>true."TRUE displays toolbar on "alv toolbar on alv
**End- Displaying toolbar on alv**
ENDIF.
** Begin - Hides paritular column of the table in the list or grid**
CALL METHOD lo_salv_tab->get_columns " get all columns of the "table
RECEIVING
value = lo_cols.
TRY.
CALL METHOD lo_cols->get_column " get reference to particular "column
EXPORTING
columnname = 'MANDT'
RECEIVING
value = lo_col.
CALL METHOD lo_col->set_technical " set technical - true hides "the column on UI
EXPORTING
value = if_salv_c_bool_sap=>true.
CATCH cx_salv_not_found .
ENDTRY.
** End - Hides paritular column of the table in the list or grid**
** Begin - Set status field as traffic icon **
TRY.
CALL METHOD lo_cols->set_exception_column
EXPORTING
value = 'STATUS'.
CATCH cx_salv_data_error .
ENDTRY.
**End - Set status field as traffic icon **
**Begin - Set icon for the column ICON**
TRY.
CALL METHOD lo_cols->get_column " get reference to particular "column
EXPORTING
columnname = 'ICON'
RECEIVING
value = lo_col_icon.
lo_icon ?= lo_col_icon.
CALL METHOD lo_icon->set_icon
EXPORTING
value = if_salv_c_bool_sap=>true.
CALL METHOD lo_icon->set_long_text
EXPORTING
value = 'Icon'.
CATCH cx_salv_not_found .
ENDTRY.
**End - Set icon for the column ICON**
**Start- Symbol**
TRY.
CALL METHOD lo_cols->get_column " get reference to particular "column
EXPORTING
columnname = 'SYMBOL'
RECEIVING
value = lo_col_sym.
lo_symbol ?= lo_col_sym.
CALL METHOD lo_symbol->set_symbol
EXPORTING
value = if_salv_c_bool_sap=>true .
CALL METHOD lo_symbol->set_long_text
EXPORTING
value = 'Symbol'. " Column name set
CATCH cx_salv_not_found .
ENDTRY.
**End symbol**
CATCH cx_salv_msg .
ENDTRY.
ENDIF.
ENDMETHOD.
METHOD display_alv.
CALL METHOD lo_salv_tab->display.
ENDMETHOD.
ENDCLASS.
START-OF-SELECTION.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME.
PARAMETERS : list RADIOBUTTON GROUP g1,
grid RADIOBUTTON GROUP g1,
alv_tool AS CHECKBOX.
SELECTION-SCREEN END OF BLOCK b1.
CALL METHOD lcl_salv_tab=>main EXPORTING
i_list = list
i_grid = grid
i_alv_tb = alv_tool.
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Step2.
Step3. Symbol as a column on Output.
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