alv_tree 刷新 refresh功能

cl_gui_alv_tree_simple
我没找到 刷新 refresh功能

最后没辙，只有按以下方法实现了，谁有好的办法请留言
我是在输入条件后，点查询，以树状展现

FORM sub_creat_tree.

"每次执行查询后，先清空，然后再去重新创建对象

IF wa_custom_container_tree IS NOT INITIAL.

CALL METHOD tree_grid->free.

CALL METHOD wa_custom_container_tree->free.

CLEAR tree_grid.

CLEAR wa_custom_container_tree.

ENDIF.

IF wa_custom_container_tree IS INITIAL AND g_kemu_show[] IS NOT INITIAL.

DATA ls_list_comm TYPE slis_t_listheader.

DATA ls_alist_comm TYPE slis_listheader.

ls_alist_comm-typ = 'H'.

ls_alist_comm-info = '科目映射关系'.

*

APPEND ls_alist_comm TO ls_list_comm.

"填充输出结构

PERFORM sub_fieldcat.

"控制输出层次

PERFORM sub_field_level.

CREATE OBJECT wa_custom_container_tree

EXPORTING

container_name = wa_container_tree.

CREATE OBJECT tree_grid

EXPORTING

i_parent = wa_custom_container_tree.

CALL METHOD tree_grid->set_table_for_first_display

EXPORTING

it_list_commentary = ls_list_comm

i_structure_name = 'Z_KEMU_INFOR'

CHANGING

it_sort = gb_sortfld

it_fieldcatalog = gb_fieldcat

it_outtab = g_kemu_show[].

*

CALL METHOD tree_grid->expand_tree

EXPORTING

i_level = 1.

ENDFORM. "sub_creat_tree

其实，这个对于cl_gui_simple_tree
的刷新同样适用
虽然有人说cl_gui_simple_tree
的 UPDATE_NODES 可以更新，但是我没测试出来，
如果谁有测试代码，可以发一下，留言也行，谢谢