Symbian OS 应用开发之玩转通信录

核心提示：CleanupStack::PushL(contactsDb);TContactIter iter(*contactsDb); //类似游标TContactItemId cardId;while( ( cardId = iter.NextL() ) != KNullContactId ) //循环遍历{CContact

CleanupStack::PushL(contactsDb);

TContactIter iter(*contactsDb); //类似游标

TContactItemId cardId;

while( ( cardId = iter.NextL() ) != KNullContactId ) //循环遍历

{

CContactItem* card = contactsDb->ReadContactL(cardId); //读取相应项

CleanupStack::PushL(card);

//添加自己功能代码

contactsDb->CloseContactL(card->Id());

CleanupStack::PopAndDestroy(); // card

}

CleanupStack::PopAndDestroy(); // contactsDb

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导出所有通信项到文件

主要使用类CContactDatabase中ExportSelectedContactsL函数。s60 2.1help中定义如下：

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void ExportSelectedContactsL(const TUid& aFormat,const CContactIdArray& aSelectedContactIds,RWriteStream& aWriteStream,TInt aOption,TBool aExportPrivateFields=ETrue);

void ExportSelectedContactsL(const TUid& aFormat,const CContactIdArray& aSelectedContactIds,RWriteStream& aWriteStream,TInt aOption,const CVersitParser::TVersitCharSet aCharSet, TBool aExportPrivateFields=ETrue);

Supported from 6.0

Description：

Exports an array of contact items to a write stream — overloaded function. The items are converted into vCards before being written to the stream.

Parameters：

const TUid& aFormat：Indicates the format for imported and exported contacts. Must have a value of KVersitEntityUidVCard.

const CContactIdArray& aSelectedContactIds：Array of contact IDs to export.

RWriteStream& aWriteStream：The stream to write to.

TInt aOption：Indicates the options for import and export. See the TOptions enum.

const CVersitParser::TVersitCharSet aCharSet：The character format. If not specified, defaults to CVersitParser::EUTF8CharSet.