topic Re: Problem in ALV Tree display in Application Development and Automation Discussions

Problem in ALV Tree display

Former Member — Fri, 12 Dec 2008 17:18:36 GMT

I have a requirement wherein I select a row from ALV grid and then click on custom buttom in the ALV pane I get the detail view. This detail view is designed using ALV Tree which is implemented using a FM.

Now I click on another button which goes to a different screen displaying ALV grid. There if I select an item and press on the detail functionality which is implemented using the same FM, I get an empty screen. I debugged and found that the nodes are getting created but the ALV tree is not displayed.

This is the code I have implemented

PBO

IF gt_fieldcatalog[] IS INITIAL.

PERFORM build_fieldcatalog.

ENDIF.

IF tree1 IS INITIAL.

PERFORM init_tree.

ELSE.

CALL METHOD tree1->delete_all_nodes.

ENDIF.

PERFORM create_hierarchy.

CALL METHOD cl_gui_cfw=>flush.

PAI

IF ok_code = 'EXIT'.

CLEAR ok_code.

LEAVE PROGRAM.

ELSEIF ok_code = 'BACK' OR ok_code = 'CANC'.

CLEAR ok_code.

SET SCREEN 0.LEAVE SCREEN.

perform init_tree

l_tree_container_name = 'TREE1'.

IF sy-batch IS INITIAL.

CREATE OBJECT l_custom_container

EXPORTING

container_name = l_tree_container_name

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

create_error = 3

lifetime_error = 4

lifetime_dynpro_dynpro_link = 5.

IF sy-subrc <> 0.

MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT

ENDIF.

CREATE OBJECT tree1

EXPORTING

parent = l_custom_container

node_selection_mode = cl_gui_column_tree=>node_sel_mode_single

item_selection = 'X'

no_html_header = ''

no_toolbar = ''

EXCEPTIONS

cntl_error = 1

cntl_system_error = 2

create_error = 3

lifetime_error = 4

illegal_node_selection_mode = 5

failed = 6

illegal_column_name = 7.

IF sy-subrc <> 0.

MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT

ENDIF.

PERFORM build_hierarchy_header CHANGING l_hierarchy_header.

PERFORM build_comment USING

lt_list_commentary

l_logo.

ls_variant-report = sy-repid.

PERFORM define_toolbar_excluding CHANGING l_toolbar_excluding.

REFRESH g_t_display.

CALL METHOD tree1->set_table_for_first_display

EXPORTING

is_hierarchy_header = l_hierarchy_header

it_list_commentary = lt_list_commentary

i_logo = l_logo

i_background_id = 'WHITE' "ALV_BACKGROUND

i_save = 'A'

is_variant = ls_variant

it_toolbar_excluding = l_toolbar_excluding

CHANGING

it_outtab = g_t_display "table must be emty !!

it_fieldcatalog = gt_fieldcatalog.

PERFORM create_hierarchy.

PERFORM change_toolbar.

PERFORM register_events.

CALL METHOD tree1->update_calculations.

Please give me some inputs of how to solve the problem

Thanks in advance

Nilanjan Dey

Re: Problem in ALV Tree display

Former Member — Wed, 17 Dec 2008 06:55:47 GMT

Hi,

Go through this program.....

REPORT yh_alvtreedemo1.TYPE-POOLS : fibs,stree.

TYPE-POOLS:slis.

DATA : t_node TYPE snodetext.DATA : it_node LIKE TABLE OF t_node,

wa_node LIKE t_node.DATA: t_fieldcat TYPE slis_t_fieldcat_alv,

fs_fieldcat TYPE slis_fieldcat_alv.DATA:w_repid LIKE sy-repid.*Internal Table declarations

DATA: BEGIN OF fs_scarr,

carrid LIKE scarr-carrid,

END OF fs_scarr.DATA:BEGIN OF fs_spfli,

carrid LIKE spfli-carrid,

connid LIKE spfli-connid,

END OF fs_spfli.DATA:BEGIN OF fs_sflight,

carrid LIKE sflight-carrid,

connid LIKE sflight-connid,

fldate LIKE sflight-fldate,

END OF fs_sflight.DATA:BEGIN OF fs_sbook,

carrid LIKE sbook-carrid,

connid LIKE sbook-connid,

fldate LIKE sbook-fldate,

bookid LIKE sbook-bookid,

END OF fs_sbook.DATA:t_scarr LIKE TABLE OF fs_scarr,

t_spfli LIKE TABLE OF fs_spfli,

t_sflight LIKE TABLE OF fs_sflight,

t_sbook LIKE TABLE OF fs_sbook.START-OF-SELECTION. PERFORM get_data.

PERFORM build_tree.

PERFORM display_tree.&----

*& Form get_data

&----

FORM get_data . SELECT carrid

FROM scarr

INTO TABLE t_scarr. SELECT carrid

connid

FROM spfli

INTO TABLE t_spfli

FOR ALL ENTRIES IN t_scarr

WHERE carrid EQ t_scarr-carrid.ENDFORM. " get_data

&----

*& Form build_tree

&----

FORM build_tree .

CLEAR: it_node,

wa_node. SORT: t_scarr BY carrid,

t_spfli BY carrid connid,

t_sflight BY carrid connid fldate,

t_sbook BY carrid connid fldate bookid. wa_node-type = 'T'.

wa_node-name = 'Flight Details'.

wa_node-tlevel = '01'.

wa_node-nlength = '15'.

wa_node-color = '4'.

wa_node-text = 'Flight'.

wa_node-tlength ='20'.

wa_node-tcolor = 3.

APPEND wa_node TO it_node.

CLEAR wa_node. LOOP AT t_scarr INTO fs_scarr. wa_node-type = 'P'.

wa_node-name = 'CARRID'.

wa_node-tlevel = '02'.

wa_node-nlength = '8'.

wa_node-color = '1'.

wa_node-text = fs_scarr-carrid.

wa_node-tlength ='20'.

wa_node-tcolor = 4.

APPEND wa_node TO it_node.

CLEAR wa_node. LOOP AT t_spfli INTO fs_spfli WHERE carrid EQ fs_scarr-carrid. wa_node-type = 'P'.

wa_node-name = 'CONNID'.

wa_node-tlevel = '03'.

wa_node-nlength = '8'.

wa_node-color = '1'.

wa_node-text = fs_spfli-connid.

wa_node-tlength ='20'.

wa_node-tcolor = 4.

APPEND wa_node TO it_node.

CLEAR wa_node. ENDLOOP.

ENDLOOP.

ENDFORM. " build_tree

&----

*& Form display_tree

&----

FORM display_tree .

CALL FUNCTION 'RS_TREE_CONSTRUCT'

TABLES

nodetab = it_node. w_repid = sy-repid. CALL FUNCTION 'RS_TREE_LIST_DISPLAY'

EXPORTING

callback_program = w_repid

callback_user_command = 'USER_COMMAND'

callback_gui_status = 'SET_PF'.

ENDFORM. " display_tree

&----

*& Form pick

&----

-->COMMAND text
-->NODE text

----

FORM user_command TABLES pt_nodes STRUCTURE seucomm

USING pv_command TYPE c

CHANGING pv_exit TYPE c

pv_list_refresh TYPE c. pv_list_refresh = 'X'. IF pt_nodes-tlevel = '03'. CLEAR t_fieldcat[]. SELECT carrid

connid

fldate

FROM sflight

INTO TABLE t_sflight

WHERE connid EQ pt_nodes-text. fs_fieldcat-col_pos = 1.

fs_fieldcat-fieldname = 'CARRID'.

fs_fieldcat-seltext_m = 'Airlinecarrier'.

fs_fieldcat-key = 'X'.

fs_fieldcat-hotspot = 'X'.

APPEND fs_fieldcat TO t_fieldcat.

CLEAR fs_fieldcat. fs_fieldcat-col_pos = 2.

fs_fieldcat-fieldname = 'CONNID'.

fs_fieldcat-seltext_m = 'Connection No'.

fs_fieldcat-key = 'X'.

fs_fieldcat-hotspot = 'X'.

APPEND fs_fieldcat TO t_fieldcat.

CLEAR fs_fieldcat. fs_fieldcat-col_pos = 3.

fs_fieldcat-fieldname = 'FLDATE'.

fs_fieldcat-seltext_m = 'Flight Date'.

fs_fieldcat-key = 'X'.

fs_fieldcat-hotspot = 'X'.

APPEND fs_fieldcat TO t_fieldcat.

CLEAR fs_fieldcat. w_repid = sy-repid. CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'

EXPORTING

i_callback_program = w_repid

it_fieldcat = t_fieldcat[]

TABLES

t_outtab = t_sflight.

ENDIF.

ENDFORM. "pick&----

*& Form set_pf

&----

text

----

FORM set_pf.

SET PF-STATUS 'MYPF'.

ENDFORM. "set_pf