Issue with Foreground and Background tasks

[aavi]

Hello all ,

I have an issue which drives me nuts :
In my AppUI file i have the followin code which suppose to send my App to background and after X seconds bring it back .
In emulator = Working
In N95 = Not Working
All i know is that after i press the Back button (my right soft key) the App goes to background and the Applications menu of the Nokia is shown , and nothing happens .

void CBoomeringAppUi::HandleCommandL( TInt aCommand )
{
 TBool commandHandled = EFalse;
 switch ( aCommand )
	{ default:
          break;
	}
	
		
 if ( !commandHandled ) 
   {
   if ( aCommand == EAknSoftkeyExit || aCommand == EEikCmdExit )
	{
	RWsSession iWsSession;
	User::LeaveIfError(iWsSession.Connect());
	TApaTaskList taskList(iWsSession); 			
        TApaTask task1 = taskList.FindApp (KUidMine );
	TApaTask task = taskList.FindApp (KUidStandby );
	 
	if (task1.Exists ( ) ) 
		{
		User::After(10000);
		task1.SendToBackground();
		/User::After(90000);
		task1.BringToForeground();
		}
	}
    }
	
}

Please advice

[skumar_rao]

Do you have SwEvent capability for your application.

[wizard_hu_]

Skumar is most likely right. However note that if a code works in the emulator, it is possible to search for possibly missing capabilities in the logfile of the emulator: http://wiki.forum.nokia.com/index.php/Epocwind.out

[aavi]

Do you have SwEvent capability for your application.

Yes , i have all neccesary capabilities.
I use Carbide.C++ 1.3 , S60 3rd FP1 , Device = N95.
Note that my code is in my AppUi file .
Is that the right location? should i move the code to the ItemListView file ?

the final goal :
listen in background to outgoing call and end it .
should i listen to green button (couldnt find in forum what ENUm value it has) or to Network Status?

[skumar_rao]

it does not matter where you want to call task1.SendToBackground();
you should listen to Network Status.

note: task1.SendToBackground(); and task1.BringToForeground();

[aavi]

it does not matter where you want to call task1.SendToBackground();
you should listen to Network Status.

note: task1.SendToBackground(); and task1.BringToForeground();

on the same subject :
if i send my app to background using the task capabilities , can i listen to Network Status ? Should i create an AO for listening?

i read that the Phone App has highest priority and that if i dont own a voice call , i cant do anything .

[skumar_rao]

yes you can listen to Network Status, using CTelephony class refer to wiki CTelephony examples.
yes you hard it right and there are workarounds too. refer to wiki

[aavi]

yes you can listen to Network Status, using CTelephony class refer to wiki CTelephony examples.
yes you hard it right and there are workarounds too. refer to wiki

i have all of wiki examples on CTelephony .
I havent found a workaround that priority issue between my app and the phone app .
should i set my application priority to a different level ?

[skumar_rao]

you can't put your application a different priority. (at least i donot know how to do it.) you can only change priorities of a active object not total application.

have to tried getting what ever info from dialed call and hanging it ?

[aavi]

you can't put your application a different priority. (at least i donot know how to do it.) you can only change priorities of a active object not total application.

have to tried getting what ever info from dialed call and hanging it ?

I tried to simulate END-Key Press in a method which is a part of an AO , as follows :

void CNotifyEngine::RequestNotification()
{

_LIT( KNotifyExamplePanic, "CNotifyEngine" );
__ASSERT_ALWAYS( !IsActive(), User::Panic( KNotifyExamplePanic, 1 ));
Cancel();
iTelephony->NotifyChange(iStatus,CTelephony::EVoiceLineStatusChange,iLineStatusPckg );
SetActive();
}


void CNotifyEngine::RunL()
    {
    if( iStatus==KErrNone )
       {
        if ( iLineStatus.iStatus == CTelephony::EStatusDialling) )
      {
      User::After(1000);   	   
      CTelephony::TCallInfoV1 callInfoV1;
      CTelephony::TCallInfoV1Pckg callInfoV1Pckg( callInfoV1 );
      CTelephony::TCallSelectionV1 callSelectionV1;
      CTelephony::TCallSelectionV1Pckg callSelectionV1Pckg( callSelectionV1 );
      CTelephony::TRemotePartyInfoV1 remotePartyInfoV1;
      CTelephony::TRemotePartyInfoV1Pckg remotePartyInfoV1Pckg( remotePartyInfoV1 );
 
      callSelectionV1.iLine = CTelephony::EVoiceLine;
      callSelectionV1.iSelect = CTelephony::EInProgressCall;
    	   
      iTelephony->GetCallInfo( callSelectionV1Pckg, callInfoV1Pckg, remotePartyInfoV1Pckg );
       //FETCH NUMBER FROM NETWORK - MISSING
    	 User::After(10000);
    	  HangUpOnGoingCall(); 
       
   }
      

      
       iTelephony->NotifyChange( iStatus,
                              CTelephony::EVoiceLineStatusChange,
                              iLineStatusPckg );
       SetActive();
       }
    }


void CNotifyEngine::DoCancel()
{
      iTelephony->CancelAsync( CTelephony::EVoiceLineStatusChangeCancel );
}

void CNotifyEngine::HangUpOnGoingCall()
{
	RWsSession ws; 
	ws.Connect(); 
	TRawEvent ev1;  
	ev1.Set(TRawEvent::EKeyDown, EStdKeyNo); 
	ws.SimulateRawEvent(ev1); // CAPABILITY Req. SwEvent
	User::After(1000000); 
	TRawEvent ev2;  
	ev2.Set(TRawEvent::EKeyUp, EStdKeyNo); 
	ws.SimulateRawEvent(ev2); // CAPABILITY Req. SwEvent
	ws.Close();
}

[skumar_rao]

what is the error you are getting ?

[aavi]

what is the error you are getting ?

Well , there is no error .
As i said at the beginning , i cant make the task switching in the device. in the emulator the task switching works like a charm (i know the emulator has no phone app so i didnt put in the code of the network status listener to work) .
on the device (N95) the switch isnt working . my App goes to background and doesnt come back after X seconds which i set for it , using the User::After(X) command .

moreover , i have tried for more than 2 weeks to figure out how to catch outgoing call , reading the examples and the wiki here , with no success. i understand i need to create an AO who will listen to the Network and notify for a cahnge. if EDiallingStatus (inside RunL() ) than get the info and hangup. all well in theory , couldnt get it to work

suppose i adopt the NotifyExample as mentioned here :
http://www.symbian.com/developer/tec...phony%2enotify

1. I assume that CActiveSchuder::Add(this) is missing in constructor - or am i missing info in head?
2. I changed the type of notification to EStatusDialling - is it right to do so? after all , the assumption is that i don't own the initial call (from the phone app)
3. I have put the HangUp Simulation you wrote before as an action to perfrom if someone is trying to make outgoing call - will it hang it up?

[bytes]

First Issue:
Is this behaviour happens when you are using phone application or even when no application is running also.

Second Issue:
As per my knowledge,

We can't terminate a call, which we don't OWN.

The work around I knew is 'SIMULATION OF RED KEY'.

Well , there is no error .
As i said at the beginning , i cant make the task switching in the device. in the emulator the task switching works like a charm (i know the emulator has no phone app so i didnt put in the code of the network status listener to work) .
on the device (N95) the switch isnt working . my App goes to background and doesnt come back after X seconds which i set for it , using the User::After(X) command .

moreover , i have tried for more than 2 weeks to figure out how to catch outgoing call , reading the examples and the wiki here , with no success. i understand i need to create an AO who will listen to the Network and notify for a cahnge. if EDiallingStatus (inside RunL() ) than get the info and hangup. all well in theory , couldnt get it to work

[aavi]

First Issue:
Is this behaviour happens when you are using phone application or even when no application is running also.

Second Issue:
As per my knowledge,

We can't terminate a call, which we don't OWN.

The work around I knew is 'SIMULATION OF RED KEY'.

Hello bytes , thanx for your reply .
i did simulate the red key :-)
still i cant get it to work if i send my app to background. since emulator has no phone app , i cant test it on the emulator.
also - the basic problem of switching between my app the the standby screen still stands :
On Emulator is switched after X seconds (i wrote it like that) and on the phone it doesnt work

[skumar_rao]

Which capability you have ?