Regarding simple 00ps report

[Former Member]

Hi friends,

I have done simple oops report . It is going dump.

The dump is Access via 'NULL' object reference not possible.

The code is below

&----

---

*& Report YCLASS_OOPS_SAMPLE_PROGRAM

*&

&----

---

*&Sample OOPS Program for ALV

*& Venkat V G Murali Mohan M

&----

---

REPORT yclass_oops_sample_program.

tables:sflight.

*ALV Grid instance refernce

DATA: alv TYPE REF TO cl_gui_alv_grid,

• *Custom container instance refernce

cont TYPE REF TO cl_gui_custom_container,

• Field catalog of table

fieldcat TYPE lvc_t_fcat,

• Layout structure

layout TYPE REF TO lvc_s_layo.

select-options s_fl for sflight-carrid.

*Internal table Holding data

DATA:BEGIN OF i_list OCCURS 0.

INCLUDE STRUCTURE sflight.

DATA END OF i_list.

START-OF-SELECTION.

• Fetching data to be displayed

SELECT * FROM sflight INTO TABLE i_list.

CALL SCREEN 100.

&----

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*& Module DISPLAY_ALV OUTPUT

&----

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• text

----

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MODULE display_alv OUTPUT.

PERFORM display_outpiut.

ENDMODULE. " DISPLAY_ALV OUTPUT

&----

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*& Form display_outpiut

&----

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• text

----

---

• --> p1 text

• <-- p2 text

----

---

form display_outpiut .

write 'hai'.

CALL METHOD alv->set_table_for_first_display

EXPORTING

• I_BUFFER_ACTIVE =

• I_BYPASSING_BUFFER =

• I_CONSISTENCY_CHECK =

I_STRUCTURE_NAME = 'SFLIGHT'

• IS_VARIANT =

• I_SAVE =

• I_DEFAULT = 'X'

• IS_LAYOUT =

• IS_PRINT =

• IT_SPECIAL_GROUPS =

• IT_TOOLBAR_EXCLUDING =

• IT_HYPERLINK =

• IT_ALV_GRAPHICS =

• IT_EXCEPT_QINFO =

• IR_SALV_ADAPTER =

CHANGING

it_outtab = i_list[].

• IT_FIELDCATALOG =

• 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.

write 'hai'.

if alv is initial.

*create custom container instance

CREATE OBJECT cont

EXPORTING

• PARENT =

container_name = 'ZCUSTOM'

• STYLE =

• LIFETIME = lifetime_default

• REPID =

• DYNNR =

• NO_AUTODEF_PROGID_DYNNR =

• EXCEPTIONS

• CNTL_ERROR = 1

• CNTL_SYSTEM_ERROR = 2

• CREATE_ERROR = 3

• LIFETIME_ERROR = 4

• LIFETIME_DYNPRO_DYNPRO_LINK = 5

• others = 6

.

IF sy-subrc <> 0.

• MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO

• WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.

ENDIF.

endif.

endform. " display_outpiut

But i-list is having the records.

Please reply immed

[Former Member]

*Create object for Custom container
CREATE OBJECT  cont
EXPORTING
CONTAINER_NAME = 'ZCUSTOM'
EXCEPTIONS
CNTL_ERROR = 1
CNTL_SYSTEM_ERROR = 2
CREATE_ERROR = 3
LIFETIME_ERROR = 4
LIFETIME_DYNPRO_DYNPRO_LINK = 5.
*Create object for ALV grid
CREATE OBJECT alv
EXPORTING I_PARENT = cont.

Regards

Kannaiah

[Former Member]

Create the object first and later call the method for display

[Former Member]

*Create object for Custom container
CREATE OBJECT  cont
EXPORTING
CONTAINER_NAME = 'ZCUSTOM'
EXCEPTIONS
CNTL_ERROR = 1
CNTL_SYSTEM_ERROR = 2
CREATE_ERROR = 3
LIFETIME_ERROR = 4
LIFETIME_DYNPRO_DYNPRO_LINK = 5.
*Create object for ALV grid
CREATE OBJECT alv
EXPORTING I_PARENT = cont.

Regards

Kannaiah

[Former Member]

Thanks Kanniah.