bluetoothdevicediscoverer.cpp

基于symbian UIQ 的一款古老的飞机游戏。对入门学习很有帮助。

/*
============================================================================
 Name			: BlueToothDeviceDiscoverer.cpp
 Author	  		: 
 Copyright   	:
 Description 	: Implementation
============================================================================
*/

// INCLUDE FILES
#include "BluetoothDeviceDiscoverer.h"
#include "common.hrh"

const TUint8 arrayGran = 8;

/*
============================================================================
CBluetoothDeviceDiscoverer's constructor 
============================================================================
*/
CBluetoothDeviceDiscoverer::CBluetoothDeviceDiscoverer(MBluetoothDeviceDiscovererObserver& aObs) :
	CActive(CActive::EPriorityStandard), iObserver(aObs)
	{
	CActiveScheduler::Add(this);
	}

/*
============================================================================
CBluetoothDeviceDiscoverer's destructor
============================================================================
*/
CBluetoothDeviceDiscoverer::~CBluetoothDeviceDiscoverer()
	{
	Cancel();
	}
	
/*
============================================================================
DoCancel is called as part of the active object's Cancel().
Cancel the notifier.
============================================================================
*/
void CBluetoothDeviceDiscoverer::DoCancel()
	{
	}


/*
============================================================================
Display the BT device in range for the player to choose from
============================================================================
*/
void CBluetoothDeviceDiscoverer::DiscoverAndSelectDeviceL(const TBTDeviceSelectionParamsPckg& /*aSelectionFilter*/)
	{
	if(IsActive())
		{	
		User::Leave(KErrInUse);
		}
	else
		{		
		//We ask CQBTUISelectDialog to start the search for other BT device in range.
		CBTDeviceArray* btDeviceArray = new (ELeave)CBTDeviceArray(arrayGran);
		BTDeviceArrayCleanupStack::PushL(btDeviceArray);
		CQBTUISelectDialog* dialog = CQBTUISelectDialog::NewL(btDeviceArray);
		TInt err = KErrCancel;
		if(dialog->RunDlgLD(KQBTUISelectDlgFlagNone))
			{
			CBTDevice* btDevice = btDeviceArray->At(0);
			if (btDevice)
				{
				iResponse().SetDeviceAddress(btDevice->BDAddr()); 
				err = KErrNone; 
				}
			}
		CleanupStack::PopAndDestroy();// btDeviceArray
		
		TRequestStatus* status = &iStatus;
		User::RequestComplete(status, err);
		SetActive();			
		}
	}
/*
============================================================================
Handles CBluetoothConnector's completion events
============================================================================
*/
void CBluetoothDeviceDiscoverer::RunL()
	{
	//We pass on to the engine the BT device address the user selected otherwise we pass on the error
	if(iStatus.Int() == KErrNone)
		{
		iObserver.OnDeviceDiscoveryComplete(iResponse);
		}
	else
		{	
		iObserver.OnDeviceDiscoveryErr(iStatus.Int());	
		}
	}

/*
============================================================================
Handles a leave occurring in the request completion event handler RunL().
Reports the error to the observer
============================================================================
*/
TInt CBluetoothDeviceDiscoverer::RunError(TInt aError)
	{
	iObserver.OnDeviceDiscoveryErr(aError);
	return KErrNone;
	}