problem with ALV tree

[Former Member]

Hi experts, I have a problem with a ALV tree. When I execute the report i cant see nothing, th tree is empty and no data appears.

can you help me??

[Former Member]

Hi,

Have u called method SET_TABLE_FOR_FIRST_DISPLAY

Hope this helps

Regds,

Seema

[Former Member]

Yes I called this method but nothing appears, neither th title of th repot.

[Former Member]

hi,

did u use it?

data:G_TREE TYPE REF TO CL_GUI_LIST_TREE.

CALL METHOD G_TREE->ADD_NODES_AND_ITEMS

EXPORTING

NODE_TABLE = NODE_TABLE

ITEM_TABLE = ITEM_TABLE

ITEM_TABLE_STRUCTURE_NAME = 'MTREEITM'

EXCEPTIONS

FAILED = 1

CNTL_SYSTEM_ERROR = 3

ERROR_IN_TABLES = 4

DP_ERROR = 5

TABLE_STRUCTURE_NAME_NOT_FOUND = 6.

IF SY-SUBRC <> 0.

MESSAGE A000.

ENDIF.

regards,

bharat.

[Former Member]

No, i use this CALL METHOD cr_arbol->add_node

[Former Member]

hi,

which type of tree u r using?

list/simple/column tree.

regard,

bharat.

[Former Member]

This type cl_gui_alv_tree

[Former Member]

hi,

did u create a container.

data:G_CUSTOM_CONTAINER TYPE REF TO CL_GUI_CUSTOM_CONTAINER,

(this becomes the parent of ur tree)

• create a container for the tree control

CREATE OBJECT G_CUSTOM_CONTAINER

EXPORTING

CONTAINER_NAME = 'TREE_CONTAINER'(the name of the container u've created on the screen)

EXCEPTIONS

CNTL_ERROR = 1

CNTL_SYSTEM_ERROR = 2

CREATE_ERROR = 3

LIFETIME_ERROR = 4

LIFETIME_DYNPRO_DYNPRO_LINK = 5.

IF SY-SUBRC <> 0.

MESSAGE A000.

ENDIF.

[Former Member]

Thanks Bharat!!! I have wrong the name of the container!!! I had the name 'CR_ARBOL' and the containers name was 'C_ARBOL'.

[Former Member]

Hi Jorge,

go through the following Code

class: lcl_application definition deferred.

tables : vbrk.

data : it_vbrk like vbrk occurs 0 with header line.

data : it_vbrp like vbrp occurs 0.

data : it_dir like vbrk.

data : g_application type ref to lcl_application,

g_custom_container type ref to cl_gui_custom_container,

g_tree type ref to cl_gui_simple_tree,

o_cont type ref to cl_gui_custom_container,

o_grid type ref to cl_gui_alv_grid.

*--Declaration for Tree View

data : g_node_key type tv_nodekey, " Holds Node Key Value

node_nb type i. "for Node key

Types : node_table_type like standard table of mtreesnode with default key.

select-options : s_vbeln for vbrk-vbeln.

select-options : s_fkart for vbrk-fkart.

class lcl_application definition.

public section.

*--Event Handler method, this will be executed when

*--node_double click event is triggered.

*--Node_key is passed as an input to this method to

*--know which node was clicked

methods : handle_node_double_click for event

node_double_click of cl_gui_simple_tree

importing node_key,

handle_expand_no_children for event

expand_no_children of cl_gui_simple_tree

importing node_key.

endclass.

class lcl_application implementation.

method handle_node_double_click.

g_node_key = node_key.

refresh it_vbrp.

read table it_vbrk into it_dir index g_node_key.

select * from vbrp into table it_vbrp

where vbeln = it_dir-vbeln.

CALL METHOD O_GRID->SET_TABLE_FOR_FIRST_DISPLAY

EXPORTING

I_STRUCTURE_NAME = 'VBRP'

CHANGING

IT_OUTTAB = it_vbrp.

CALL METHOD O_GRID->REFRESH_TABLE_DISPLAY.

endmethod.

method handle_expand_no_children.

data : g_node_table type node_table_type,

node type mtreesnode,

node_chemin(255) type c,

it_dir type vbrk.

g_node_key = node_key.

read table it_vbrk into it_dir index g_node_key.

if sy-subrc = 0.

node_chemin = it_dir-vbeln.

else.

exit.

endif.

loop at it_vbrk into it_dir.

clear : node.

node-node_key = node_nb.

node-relatkey = node_key.

node-relatship = cl_gui_simple_tree=>relat_last_child.

node-text = it_vbrk-vbeln.

node-isfolder = 'X'.

node-expander = 'X'.

if not it_dir-vbeln is initial.

append node to g_node_table.

node_nb = node_nb + 1.

endif.

endloop.

loop at it_vbrk into it_dir.

at new fkart.

clear : node.

node-node_key = node_nb.

node-relatkey = node_key.

node-relatship = cl_gui_simple_tree=>relat_last_child.

node-text = it_vbrk-vbeln.

node-isfolder = 'X'.

node-expander = 'X'.

if not it_dir-vbeln is initial.

append node to g_node_table.

node_nb = node_nb + 1.

endif.

endat.

endloop.

if sy-subrc = 0.

CALL METHOD G_TREE->ADD_NODES

EXPORTING

TABLE_STRUCTURE_NAME = 'MTREESNODE'

NODE_TABLE = g_node_table.

endif.

endmethod.

endclass.

start-of-selection.

perform get_data.

create object g_application.

set screen 100.

&----

---

*& Form get_data

&----

---

• text

----

---

FORM get_data .

select vbeln from vbrk

into corresponding fields of table it_vbrk

where vbeln in s_vbeln.

if sy-subrc = 0.

sort it_vbrk by fkart.

endif.

ENDFORM. " get_data

&----

---

*& Module STATUS_0100 OUTPUT

&----

---

• text

----

---

MODULE STATUS_0100 OUTPUT.

SET PF-STATUS 'MENU'.

if g_tree is initial.

perform create_and_init_tree.

endif.

ENDMODULE. " STATUS_0100 OUTPUT

&----

---

*& Module USER_COMMAND_0100 INPUT

&----

---

• text

----

---

MODULE USER_COMMAND_0100 INPUT.

case sy-ucomm.

when 'BACK'.

leave program.

endcase.

ENDMODULE. " USER_COMMAND_0100 INPUT

&----

---

*& Form create_and_init_tree

&----

---

• text

----

---

FORM create_and_init_tree .

data : events type cntl_simple_events,

event type cntl_simple_event.

*--Creating Custom Container class object and passing

*--custom control to it to link.

CREATE OBJECT G_CUSTOM_CONTAINER

EXPORTING

CONTAINER_NAME = 'TREE_CONT'.

*--Linking Tree View class object to Custom Container class object

*--so that Tree View control will sit on Custom control of the

*--graphical screen.

CREATE OBJECT G_TREE

EXPORTING

PARENT = g_custom_container

NODE_SELECTION_MODE = cl_gui_simple_tree=>node_sel_mode_single.

*--Registering the event id for Tree View which system

*--uses internal purpose.

event-eventid = cl_gui_simple_tree=>eventid_node_double_click.

event-appl_event = 'X'.

append event to events.

*--Registering the eventId for Tree View.

CALL METHOD G_TREE->SET_REGISTERED_EVENTS

EXPORTING

EVENTS = EVENTS.

• assign event handlers in the application class to each desired event

SET HANDLER G_APPLICATION->HANDLE_NODE_DOUBLE_CLICK FOR G_TREE.

SET HANDLER G_APPLICATION->HANDLE_EXPAND_NO_CHILDREN FOR G_TREE.

perform build_node_table.

ENDFORM. " create_and_init_tree

&----

---

*& Form build_node_table

&----

---

FORM build_node_table..

data : g_node_table type node_table_type,

it_dir like vbrk,

node type mtreesnode.

*--Creating the first Root node of the Tree View Control.

clear : node,

node_nb.

node-node_key = '0'.

node-isfolder = 'X'.

node-text = 'Sales Orders'.

append node to g_node_table.

node_nb = node_nb + 1.

*--Creating the Child Node and adding that to the root node.

loop at it_vbrk into it_dir.

clear node.

node-node_key = node_nb.

*--Adding the Child node to the root node(Sales Order Folder)

node-relatkey = '0'.

• node-relatkey = node_nb.

*--Adding the New Child node, Next to last Child Node

node-relatship = cl_gui_simple_tree=>relat_last_child.

• append node to g_node_table.

*--Showing the sales order no as a text to the node.

node-text = it_dir-vbeln.

• node-isfolder = 'X'.

• node-expander = 'X'.

• node-n_image = '@1Z@'.

if not it_dir-vbeln is initial.

append node to g_node_table.

node_nb = node_nb + 1.

endif.

endloop.

*--Loading the Nodes into tree view control.

if sy-subrc = 0.

CALL METHOD G_TREE->ADD_NODES

EXPORTING

TABLE_STRUCTURE_NAME = 'MTREESNODE'

NODE_TABLE = g_node_table.

endif.

CREATE OBJECT O_CONT

EXPORTING

CONTAINER_NAME = 'CUST_CONT'.

if sy-subrc = 0.

CREATE OBJECT O_GRID

EXPORTING

I_PARENT = O_CONT.

endif.

ENDFORM. " build_node_table

<b> set screen 100.</b>

here you just double click on this screen Number 100.

and place two subscreen here.

one for : TREE_CONT and other for CUST_CONT

Thanks & regards

Sreeni

[Former Member]

Thanks but i have made yhe report and I can´t change it. i need to know why a ALV tree can´t be displayed.

Thanks.

[Former Member]

hi,

i think u r writing all the code in the program.

you have to write all the code to create the tree in one of the module of PBO.

confirm whether u r doing so are not.

regards,

bharat.

[Former Member]

Hi Sreenivasulu,

Thanks for your program, its really useful.

Thanks

Satya