Experts doubt again

Question

HI
What are the steps to create a dynamic ALV ? can some one help me out.

Answer 1

Its very simple if you understand .
make these declarations
DATA:     L_STRUCTURE   TYPE REF TO DATA,
          L_TABLE    TYPE REF TO DATA,
          STRUC_DESC   TYPE REF TO CL_ABAP_STRUCTDESCR,
          LS_LVC_FIELDCATALOGUE  TYPE LVC_S_FCAT,
          LT_LVC_FIELDCATALOGUE  TYPE LVC_T_FCAT.
FIELD-SYMBOLS :
  <IT_TABLE>    TYPE STANDARD TABLE,
  <DYN_STR>         TYPE ANY,
  <STR_COMP> TYPE ABAP_COMPDESCR.
Then we create the structure dynamically,
Syntax:
Dynamic creation of a structure
  CREATE DATA L_STRUCTURE TYPE (P_TABLE).
  ASSIGN L_STRUCTURE->* TO <DYN_STR>.* Fields Structure
  STRUC_DESC ?= CL_ABAP_TYPEDESCR=>DESCRIBE_BY_DATA( <DYN_STR> ).
We build the fieldcatalog by looping the structure :
LOOP AT STRUC_DESC->COMPONENTS ASSIGNING <STR_COMP>.
  Build Fieldcatalog
    LS_LVC_FIELDCATALOGUE-FIELDNAME = <STR_COMP>-NAME.
    LS_LVC_FIELDCATALOGUE-REF_TABLE = P_TABLE.
    APPEND LS_LVC_FIELDCATALOGUE TO LT_LVC_FIELDCATALOGUE.
  Build Fieldcatalog
    LS_FIELDCATALOGUE-FIELDNAME = <STR_COMP>-NAME.
    LS_FIELDCATALOGUE-REF_TABNAME = P_TABLE.
    APPEND LS_FIELDCATALOGUE TO LT_FIELDCATALOGUE.
  ENDLOOP.
Then we create the dynamic internal table:
CALL METHOD CL_ALV_TABLE_CREATE=>CREATE_DYNAMIC_TABLE
    EXPORTING
      IT_FIELDCATALOG = LT_LVC_FIELDCATALOGUE
    IMPORTING
      EP_TABLE        = L_TABLE.  ASSIGN L_TABLE->* TO <IT_TABLE>.
Then its a dynamic select if required we can Use. rest is the same process.
i will give you a link again
http://www.****************/Tutorials/ALV/DynamicALV/Demo.htm