Cannot access Null obj ref

Question

Hi
I have a navigation list on my view...and ONSELECT of a particular item in the list i have written the below code
DATA lo_componentcontroller TYPE REF TO ig_componentcontroller.
DATA ls_navi_list TYPE wd_this->element_NAVI_LIST.
data CONTEXT_ELEMENT TYPE REF TO IF_WD_CONTEXT_ELEMENT.
Get key information for selected navigation list entry
break-point.
context_element->get_static_attributes(
IMPORTING
static_attributes = ls_navi_list ).
how ever i am getting the error "cannot access null obj ref " at
context_element->get_static_attributes(
IMPORTING
static_attributes = ls_navi_list ).

Answer 1

Oooohhh! Now I got the problem!
The problem is that inside the function, you have an if clause, that when the SWF loads an amount of bytes, you send it to the frame four. The problem occurs because even you sending it to fame four, it is still listening to the PROGRESS_EVENT, when this events is dispatched the method is called again, trying to set the label to the textfield that does not exists anymore.
To resolve it, just add a removeListener before send it to frame 4.
function PL_LOADING(event:ProgressEvent):void {
     if (event.bytesLoaded>=3704635) {
          this.loaderInfo.removeEventListener( ProgressEvent.PROGRESS, PL_LOADING );
               this.gotoAndStop(4);
if (this.loaderInfo.bytesLoaded >= this.loaderInfo.bytesTotal) {
      this.loaderInfo.removeEventListener( ProgressEvent.PROGRESS, PL_LOADING );
          this.gotoAndStop(4);
This will fix the problem.
Regards,
CaioToOn!