Field catlog

Question

Hi All,
      i am developing a class which will populate the fieldcatlog automatically . so pass the internal table to my class it_table. now i want to create the field catlog for the same..i have written a code as below.. but it dumps at the ASSIGN it_table-> TO <t_dyntable>.*  it_table is of type any
Can any onehelp me out with this..
DATA: wa_fieldcat     TYPE lvc_s_fcat,
        it_fieldcat     TYPE lvc_t_fcat,
        it_tabdescr     TYPE abap_compdescr_tab,
        wa_tabdescr     TYPE abap_compdescr,
        ref_table_descr TYPE REF TO cl_abap_structdescr,
        p_table         TYPE char30 VALUE 'IT_TABLE'.
  DATA: dref TYPE REF TO data.
  DATA: newtable TYPE REF TO data.
  DATA: newline TYPE REF TO data.
FIELD-SYMBOLS: <t_dyntable> TYPE STANDARD TABLE,
               <fs_dyntable> TYPE any,
               <fs_fldval> type any.
  FIELD-SYMBOLS: <table> TYPE STANDARD TABLE,
               <line>  TYPE ANY.
ASSIGN it_table->* TO <t_dyntable>.
  CREATE DATA newline LIKE LINE OF <t_dyntable>.
ref_table_descr ?= cl_abap_typedescr=>describe_by_name( p_table ).
  it_tabdescr = ref_table_descr->components[].
  LOOP AT it_tabdescr INTO wa_tabdescr.
    CLEAR wa_fieldcat.
    wa_fieldcat-fieldname = wa_tabdescr-name .
    wa_fieldcat-datatype = wa_tabdescr-type_kind.
    wa_fieldcat-inttype = wa_tabdescr-type_kind.
    wa_fieldcat-intlen = wa_tabdescr-length.
    wa_fieldcat-decimals = wa_tabdescr-decimals.
    APPEND wa_fieldcat TO it_fieldcat.
  ENDLOOP.

Answer 1

Hi Neha,
Modified program as below:
CALL METHOD CL_ALV_TABLE_CREATE=>CREATE_DYNAMIC_TABLE
    EXPORTING
      IT_FIELDCATALOG = it_fieldcat
    IMPORTING
      EP_TABLE        = IT_NEWTABLE.
  ASSIGN IT_NEWTABLE->* TO <FS_T_DYNTABLE>
Create dynamic work area and assign to FS
  CREATE DATA IT_NEWLINE LIKE LINE OF <FS_T_DYNTABLE>.
  ASSIGN IT_NEWLINE->* TO <FS_DYNTABLE>.
Thanks
Mohit Khandelwal