Symbian 关于联系人读取和CPbkContactEngine的使用问题

[chen513562028]

最近在做一个读取联系人的程序，出现了一些奇怪的问题！先贴代码
void CBluetoothFDQContainerView::ExportPhonebook()
{
CContactDatabase * p_base = CContactDatabase::OpenL();
CleanupStack::PushL(p_base);

TContactIter it(*p_base);
TContactItemId item_id;

TBuf<128> tempBuf;
TBuf8<128> buf8;

TInt err;
RFile file;
err = file.Replace(CCoeEnv::Static()->FsSession(), KFileName, EFileWrite);

CleanupClosePushL(file);
if (KErrNone != err)
{
CleanupStack::PopAndDestroy(1); // file
return;
}

while ((item_id = it.NextL()) != KNullContactId)
{
CContactItem * p_item = p_base->ReadContactL(item_id);
CleanupStack::PushL(p_item);

tempBuf.Zero();
tempBuf.Append(_L("<Item>"));

TInt i_fname = p_item->CardFields().Find(KUidContactFieldFamilyName);//�� 1
if (i_fname != KErrNotFound)
{
TPtrC16 p_str_fname =
p_item->CardFields()[i_fname].TextStorage()->Text();
tempBuf.Append(_L("<fname>"));
tempBuf.Append(p_str_fname);
//CEikonEnv::Static()->InfoWinL(_L("fname"),p_str_fname);
tempBuf.Append(_L("</fname>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_name = p_item->CardFields().Find(KUidContactFieldGivenName);//�� 2
if (i_name != KErrNotFound)
{
TPtrC16 p_str_name =
p_item->CardFields()[i_name].TextStorage()->Text();
tempBuf.Append(_L("<gname>"));
tempBuf.Append(p_str_name);
tempBuf.Append(_L("</gname>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_phone = p_item->CardFields().Find(KUidContactFieldPhoneNumber);//�ֻ� 3
if (i_phone != KErrNotFound)
{

TPtrC p_str_phone =
p_item->CardFields()[i_phone].TextStorage()->Text();

tempBuf.Append(_L("<phone>"));
tempBuf.Append(p_str_phone);
tempBuf.Append(_L("</phone>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_country = p_item->CardFields().Find(KUidContactFieldCountry);// 4
if (i_country != KErrNotFound)
{
TPtrC p_str_country =
p_item->CardFields()[i_country].TextStorage()->Text();
tempBuf.Append(_L("<country>"));
tempBuf.Append(p_str_country);
tempBuf.Append(_L("</country>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_company = p_item->CardFields().Find(KUidContactFieldCompanyName);//��˾ 5
if (i_company != KErrNotFound)
{
TPtrC p_str_company =
p_item->CardFields()[i_company].TextStorage()->Text();
tempBuf.Append(_L("<company>"));
tempBuf.Append(p_str_company);
tempBuf.Append(_L("</company>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_email = p_item->CardFields().Find(KUidContactFieldEMail);//�������� 7
if (i_email != KErrNotFound)
{
TPtrC p_str_email =
p_item->CardFields()[i_email].TextStorage()->Text();
tempBuf.Append(_L("<email>"));
tempBuf.Append(p_str_email);
tempBuf.Append(_L("</email>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_postOffice = p_item->CardFields().Find(
KUidContactFieldPostOffice);//�������� 8
if (i_postOffice != KErrNotFound)
{
TPtrC p_str_postoffice =
p_item->CardFields()[i_postOffice].TextStorage()->Text();
tempBuf.Append(_L("<postoffice>"));
tempBuf.Append(p_str_postoffice);
tempBuf.Append(_L("</postoffice>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_region = p_item->CardFields().Find(KUidContactFieldRegion);//ʡ���� 9
if (i_region != KErrNotFound)
{
TPtrC p_str_country =
p_item->CardFields()[i_region].TextStorage()->Text();
tempBuf.Append(_L("<region>"));
tempBuf.Append(p_str_country);
tempBuf.Append(_L("</region>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

TInt i_extendedAddr = p_item->CardFields().Find(
KUidContactFieldExtendedAddress);//��ϸ��ַ 10ַ
if (i_extendedAddr != KErrNotFound)
{
TPtrC p_str_extendedAddr =
p_item->CardFields()[i_extendedAddr].TextStorage()->Text();
tempBuf.Append(_L("<extendedAddr>"));
tempBuf.Append(p_str_extendedAddr);
tempBuf.Append(_L("</extendedAddr>"));
}
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

tempBuf.Append(_L("</Item>"));
buf8.Delete(0, buf8.Length());
CnvUtfConverter::ConvertFromUnicodeToUtf8(buf8, tempBuf);
file.Write(buf8);
tempBuf.Delete(0, tempBuf.Length());

p_base->CloseContactL(p_item->Id());
CleanupStack::PopAndDestroy(p_item);
}
CleanupStack::PopAndDestroy(2);

}

在对应的姓的域内读出一些奇奇怪怪的记录（例f39a0e3aa9facd0cffeb78dfafe37dfff7fbfedf41302d8d5fb6fb0bfad69658）！用E66测试是出现在最前面的两条， 5320 是出现在中间的两条，而N73的话就是第一条出现错误记录


改用CPbkContactEngine来实现的话，用该类的NewL方法老是new不成功，换用Static得到的却是NULL



有哪位大牛能帮帮我