How can we make the save button active in standard toolbar in outout of alv

Question

Hi experts ,
I am using factory method to print alv with oops .
Cancel , Exit and Back button are active by default in Standard tool bar  in output of Report , But Save button is not active , How can i make that save button active .
Also Pls tell me how i can make editable to the cell in output , 
My Code is like this :
cl_salv_table=>factory( IMPORTING r_salv_table = gr_table CHANGING t_table = ispfli ).
  gr_functions = gr_table->get_functions( ).
  gr_functions->set_all( abap_true ).
  gr_display = gr_table->get_display_settings( ).
  gr_display->set_striped_pattern( cl_salv_display_settings=>true ).
  gr_display->set_list_header( 'This is the heading' ).
  gr_columns = gr_table->get_columns( ).
  gr_column ?= gr_columns->get_column( 'CITYTO' ).
  gr_column->set_long_text( 'This is long text' ).
  gr_column->set_medium_text( 'This is med text' ).
  gr_column->set_short_text( 'This is sh' ).
  gr_column ?= gr_columns->get_column( 'CITYFROM' ).
  color-col = '6'.
  color-int = '1'.
  color-inv = '0'.
  gr_column->set_color( color ).
  gr_sorts = gr_table->get_sorts( ).
*gr_sorts->add_sort( 'CITYTO' ).
  gr_sorts->add_sort( columnname = 'CITYTO' subtotal = abap_true ).
  gr_agg = gr_table->get_aggregations( ).
  gr_agg->add_aggregation( 'DISTANCE' ).
  gr_filter = gr_table->get_filters( ).
  gr_filter->add_filter( columnname = 'CARRID' low = 'DL' ).
  gr_layout = gr_table->get_layout( ).
  gr_layout->set_key( key ).
  key-report = sy-repid.
  gr_layout->set_save_restriction( cl_salv_layout=>restrict_none ).
  gr_table->display( ).
Rgds,
Premraj

Answer 1

Hi,
1)you need to give the function code to that save in the Function Keys of that screen from the GUI Status.
2) while filling the field catalog of that field you need to put the        
wa_fieldcat_edit-edit = c_x.
i.e use the edit and append to that field catalog internal table.
for more infomation you can refer to below links:
problem with alv edit and save
*Edit* and *Save*  for the selected records in ALV
solves your problem
Thanks!!