whats wrong with my alv code ?

[Former Member]

hello friends,

I am doing ALV display, and dont know what I am doing wrong.. please suggest:

DATA: o_alv_grid TYPE REF TO cl_gui_alv_grid.

DATA: o_gui_cont TYPE REF TO cl_gui_container.

DATA: lt_field_cat TYPE lvc_t_fcat.

IF o_gui_cont IS INITIAL.

CREATE OBJECT o_gui_cont

EXPORTING

clsid = space

container_name = 'ALV_GRID'

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

create_error = 3

lifetime_error = 4

lifetime_dynpro_dynpro_link = 5

lifetime_dynpro_illegal_parent = 6

OTHERS = 7.

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

• PERFORM set_field_catalog TABLES lt_field_cat.

CREATE OBJECT o_alv_grid

EXPORTING

i_parent = o_gui_cont

EXCEPTIONS

error_cntl_create = 1

error_cntl_init = 2

error_cntl_link = 3

error_dp_create = 4

OTHERS = 5.

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

*

• DATA: w_layo TYPE lvc_s_layo.

*

• * layout design

• w_layo-no_toolbar = ''.

• not to allow totaling feature

• w_layo-no_totline = 'X'.

• report title

• w_layo-grid_title = text-004.

• w_layo-grid_title = 'TEST'.

• w_layo-zebra = 'X'. "Alternating line color (striped)

• w_layo-cwidth_opt = 'X'. "Optimize column width

• w_layo-sel_mode = 'A'. "Selection Mode

• name of the color field

• w_layo-info_fname = 'LINE_COLOR'."For row color

CALL METHOD o_alv_grid->set_table_for_first_display

EXPORTING

• i_buffer_active =

• i_bypassing_buffer =

• i_consistency_check =

i_structure_name = 'ZFI_ALV_STR'

• is_variant =

i_save = 'A'

• i_default = 'X'

• is_layout = w_layo

• is_print =

• it_special_groups =

• it_toolbar_excluding =

• it_hyperlink =

• it_alv_graphics =

• it_except_qinfo =

• ir_salv_adapter =

CHANGING

it_outtab = lt_error_msg

• it_fieldcatalog = lt_field_cat

• it_sort =

• it_filter =

EXCEPTIONS

invalid_parameter_combination = 1

program_error = 2

too_many_lines = 3

OTHERS = 4

.

IF sy-subrc <> 0.

MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

[Former Member]

do i need to have screen and pbo and pai in oder to display alv ?

please suggest, I am getting confused...

Thanks.

[Former Member]

Hi ,

No, you actually don't need a PBO or PAI to display ALV, unless you have a requirement of additional push buttons on screen.

In the code given, you have commented the IS_LAYOUT parameter and changing table IT_FIELDCATALOG , but you need these to arrange the ALV, so pass proper values in IS_LAYOUT (according to your requirement) and manually fill the fieldcatalog or do it with the FM.

Hope this answers your query.

-MBD2186

[Former Member]

Hi Shah,

No it is not compulsory to write code in PBO and PAI events.

Though, you should call the "SET_TABLE_FOR_FIRST_DISPLAY" module in the PBO event to make sure that the table gets refreshed everytime.

Also,

In you code you have not called a screen which is used to display the ALV.

See program BCALV_GRID_DEMO to have a better idea.

Line 13 : CALL SCREEN 100.

Double click on 100 in the code to see how the screen is defined incase you do not already know it.

Regards,

Jovito.

[Former Member]

Hi Shah H.,

Few Changes need to be incurred:

1. Did you created a Container on Screen where you want to Display your ALV.

2. Code doesnt contain CALL SCREEN.

3. lt_error_msg is not populated.

Correct Soln:

1. Call a screen and add Custom Container.

2. Create Object of Class: CL_GUI_CUSTOM_CONTAINER.

3. Create ALV Grid instance.

4. Build a Field Catalog.(Optional)

5. Build Layout(Optional)

6. Display Using Method: SET_TABLE_FOR_FIRST_DISPLAY.

Hope its Clear.

For Code: Check Program BCALV_GRID_DEMO

Regards,

Ankit.