Reading internet access points from the device
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Contents |
Access point (IAP) selection dialog
UI Libraries used:
LIBRARY avkon.lib
LIBRARY eikcoctl.lib
Add this to your header file:
class TIapData
{
public:
TBuf<128> iName;
TUint32 iIap;
};
These are the additional headers files required:
#include <aknlists.h> // CAknSinglePopupMenuStyleListBox
#include <CommDbConnPref.h>
#include <CommDb.h> // CCommsDatabase
TInt SelectIAPL()
{
CArrayFixFlat<TIapData>* iEApList=new (ELeave) CArrayFixFlat<TIapData>(2) ;
TInt stack=0;
// Make listitems. and PUSH it
CAknSinglePopupMenuStyleListBox* list = new(ELeave) CAknSinglePopupMenuStyleListBox;
CleanupStack::PushL(list);stack++;
// Create popup list and PUSH it.
CAknPopupList* popupList = CAknPopupList::NewL(list,
R_AVKON_SOFTKEYS_OK_CANCEL, AknPopupLayouts::EMenuWindow);
CleanupStack::PushL(popupList);stack++;
CDesCArrayFlat* items = new (ELeave) CDesCArrayFlat(5);
CleanupStack::PushL(items);stack++;
// initialize listbox.
list->ConstructL(popupList, CEikListBox::ELeftDownInViewRect);
list->CreateScrollBarFrameL(ETrue);
list->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOff,
CEikScrollBarFrame::EAuto);
TBuf<52> iapfromtable;
TInt err = KErrNone;
CCommsDatabase* iCommsDB=CCommsDatabase::NewL(EDatabaseTypeIAP);
CleanupStack::PushL(iCommsDB);stack++;
#ifdef __SERIES60_3X__
CCommsDbTableView* gprsTable = iCommsDB->OpenIAPTableViewMatchingBearerSetLC(
ECommDbBearerGPRS|ECommDbBearerWLAN|ECommDbBearerVirtual,
ECommDbConnectionDirectionOutgoing);
#else
CCommsDbTableView* gprsTable = iCommsDB->OpenIAPTableViewMatchingBearerSetLC(
ECommDbBearerGPRS|ECommDbBearerVirtual,
ECommDbConnectionDirectionOutgoing);
#endif
User::LeaveIfError(gprsTable->GotoFirstRecord());
TInt i=0;
TUint32 id;
TIapData eap;
TInt cur =0; //current value
do
{
gprsTable->ReadTextL(TPtrC(COMMDB_NAME), iapfromtable);
gprsTable->ReadUintL(TPtrC(COMMDB_ID), id);
items->AppendL(iapfromtable);
eap.iIap = id;
eap.iName.Copy(iapfromtable);
iEApList->AppendL(eap);
err = gprsTable->GotoNextRecord();
i++;
}
while (err == KErrNone);
CleanupStack::PopAndDestroy(2); stack--;
// Set listitems.
CTextListBoxModel* model = list->Model();
model->SetItemTextArray(items);
model->SetOwnershipType(ELbmOwnsItemArray);
CleanupStack::Pop();
popupList->SetTitleL(_L("IAP"));
list->SetListBoxObserver(popupList);
TInt popupOk = popupList->ExecuteLD();
CleanupStack::Pop();
TInt iap=0;
if (popupOk)
{
TInt index = list->CurrentItemIndex();
iap=(*iEApList)[index].iIap;
}
CleanupStack::PopAndDestroy();
iEApList->Reset();
delete iEApList;
return iap;
}
Reading all access points from the device
The following code reads all access points from the device disregarding their type. This is preferred unless there is some grave reason why you would force the user to select e.g. from GPRS connections.
TFileName iapName;
TUint32 iapID;
TInt err;
// open the IAP communications database
CCommsDatabase* commDB = CCommsDatabase::NewL();
CleanupStack::PushL(commDB);
// Open the IAP table
CCommsDbTableView* view = commDB->OpenTableLC(TPtrC(IAP));
// Point to the first entry
if (view->GotoFirstRecord() == KErrNone)
{
do
{
view->ReadTextL(TPtrC(COMMDB_NAME), iapName);
view->ReadUintL(TPtrC(COMMDB_ID), iapID);
// Store name and ID to where you want to
} while (err = view->GotoNextRecord(), err == KErrNone);
}
CleanupStack::PopAndDestroy(); // view
CleanupStack::PopAndDestroy(); // commDB
Reading GPRS/CSD internet access points from the device
Following code sample shows how to retrieve all set GPRS or CSD internet access point from the device.
CCommsDatabase* commDb = CCommsDatabase::NewL(EDatabaseTypeIAP);
CleanupStack::PushL(commDb);
CCommsDbTableView* commView = commDb->OpenIAPTableViewMatchingBearerSetLC(
ECommDbBearerCSD|ECommDbBearerGPRS, ECommDbConnectionDirectionOutgoing);
TFileName TmpName;
if (commView->GotoFirstRecord() == KErrNone)
{
do
{
TmpName.Zero();
commView->ReadTextL(TPtrC(COMMDB_NAME),TmpName);
// Add TmpName to CDesCArray for example
// it has the IAP's human readable name
TUint32 IapNum;
commView->ReadUintL(TPtrC(COMMDB_ID),IapNum);
// Add IapNum into other array,
// it has the ID for the accesspoint used with connection
}while (commView->GotoNextRecord() == KErrNone);
}
CleanupStack::PopAndDestroy(2);//commView,commDb
With the code the TmpName variable will held the internet access point name you could show to user for selection, and the IapNum variable holds the internet access point identifier you could then use with the RConnection when making a silent connection. Note that when making a silent connection you also need to call the SetDialogPreference()-function with ECommDbDialogPrefDoNotPrompt for the connection preferences (TCommDbConnPref).
Retrieving Proxy Server Name from IAP
The code below shows how to retrieve proxy server name and the port number from a certain IAP.
//
// The tableView variable here is the instance of CCommsDbTableView
// Normally you call CCommsDatabase::OpenTableLC() to get the instance of
// CCommsDbTableView.
// (See also the other examples above.)
//
// Firstly, we need to get the IAPService and IAPServiceType
// of our IAP in order to find out the proxy information.
TUint32 iapService;
HBufC* iapServiceType;
tableView->ReadUintL(TPtrC(IAP_SERVICE), iapService);
iapServiceType = tableView->ReadLongTextLC(TPtrC(IAP_SERVICE_TYPE));
// Check whether this IAP uses proxy or not.
TBool isProxyEnabled = EFalse;
CCommsDbTableView* proxyTableView = commsDb->OpenViewOnProxyRecordLC(
iapService, *iapServiceType);
if (KErrNone == proxyTableView->GotoFirstRecord())
{
proxyTableView->ReadBoolL(TPtrC(PROXY_USE_PROXY_SERVER), isProxyEnabled);
// If proxy is enabled then do something.
if (isProxyEnabled)
{
proxyServerName = proxyTableView->ReadLongTextLC(TPtrC(PROXY_SERVER_NAME));
proxyTableView->ReadUintL(TPtrC(PROXY_PORT_NUMBER), proxyPortNumber);
// Do whatever you want with proxyServerName and proxyPortNumber.
CleanupStack::PopAndDestroy(proxyServerName);
}
}
17 Sep
2009
this article had explained about the reading internet access point from the device A wireless (such as Wi-Fi or similar) access point is included in or attached to a device, such as a cellular phone, WiMAX device, other mobile device, etc. One or more wireless units wirelessly access a communication network (and in some cases the Internet) through the wireless access point device. Additionally, such a wireless access point device can receive a transmission from a wireless tag that has been attached to an object to be monitored and can forward information from the wireless tag to a target device along with location information
This help full to the beginners as well as experinace developers also