Change the List Headings in the ALV output

Question

Hi,
I am trying to bind  dynamic attributes to a dynamically created Node.
The code is as follows
build a structure description from the list of single fields
  comp-name = 'CARRID'.
  comp-type ?= cl_abap_datadescr=>describe_by_name( 'S_CARR_ID' ).
  APPEND comp TO comp_tab.
  comp-name = 'CONNID'.
  comp-type ?= cl_abap_datadescr=>describe_by_name( 'S_CONN_ID' ).
  APPEND comp TO comp_tab.
* not this structure contains the fields "CONNID" and "CARRID"
  struct_type = cl_abap_structdescr=>create( comp_tab ).
* now the nodeinfo is created
  node_info = wd_context->get_node_info( ).
  node_info = node_info->add_new_child_node(
    name                         = 'MY_NODE'
    IS_MANDATORY                 = ABAP_true
    IS_MULTIPLE                  = ABAP_true
    STATIC_ELEMENT_RTTI          = struct_type
    IS_STATIC                    = ABAP_false
But in the output I want my custom List Headings for each of the column.
How to achieve the same.
Edited by: SAP LEARNER on Jan 4, 2010 8:11 AM

Answer 1

Hi,
You can set the column titles when you initialize your ALV as follows,
* Data declarations for instantiation
  DATA: l_ref_interfacecontroller TYPE REF TO iwci_salv_wd_table   ,
        l_ref_cmp_usage           TYPE REF TO if_wd_component_usage.
* Instantiate the ALV
  l_ref_cmp_usage =   wd_this->wd_cpuse_usg_alv_feclm( ) ." alv_feclm is your usage name
  IF l_ref_cmp_usage->has_active_component( ) IS INITIAL .
    l_ref_cmp_usage->create_component( )                 .
  ENDIF                                                  .
* Get model
  l_ref_interfacecontroller = wd_this->wd_cpifc_usg_alv_feclm( ).
  l_value = l_ref_interfacecontroller->get_model( )             .
  wd_this->l_value_feclm = l_value                              .
*to make ALV table editable
  lr_table_settings ?= l_value                  .
  lr_table_settings->set_read_only( abap_false ).
* Column Settings
  lr_column_settings ?= l_value                  .
  lt_columns = lr_column_settings->get_columns( ).
  LOOP AT lt_columns INTO ls_column.
    CASE ls_column-id.
      WHEN 'CA_TEXT'.
        lr_column_header = ls_column-r_column->get_header( )  .
        lr_column_header->set_ddic_binding_field(
           if_salv_wd_c_column_settings=>ddic_bind_none )     .
        lr_column_header->set_text( 'Column Header' )      . " this is your coulmn header
    WHEN OTHERS.
   ENDCASE.
ENDLOOP.