about Cba keys

[coxcom]

hi all,
I developed one application,in that i move one screen to another screen.In that i use cba commands options and back,but it not go back its display one dialog like this: App.closed !
here display(application name).
any one know reply me urgent.


I written for this in handle command below
void CAptvClipScrView::HandleCommandL(TInt aCommand)
{
if (aCommand == EAptvSwitchToClipScrView)//|| aCommand ==EAknSoftkeyBack)
{
//AppUi()->ActivateLocalViewL(TUid::Uid(EAptvMainScrViewId));
// AppUi()->ActivateLocalViewL(TUid::Uid(EAptvChnlScrViewId));
//Play Command is selected
DoPlayL();
}
else if(aCommand ==EAknSoftkeyBack)
{
iEngine->DoStop(); //Stop
//Go Back to Channel SCrren
AppUi()->ActivateLocalViewL(TUid::Uid(EAptvChnlScrViewId));
}else
{
AppUi()->HandleCommandL(aCommand);
}
}for this show that above error.

[sinhashivam]

Check your HandleCommandL() where you are handling your cba buttons.