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<!DOCTYPE task

  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">

<task id="GUID-511A0F2D-AD60-56C5-808C-8F8570C19C3A" xml:lang="en"><title>Battery

Charger Tutorial </title><shortdesc>This tutorial describes how to get the battery charger information. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>

<context>The client applications must check if the device can detect and provide

the charger information.</context>

<steps id="GUID-9A643716-8B35-56DC-B59D-EFEC27E5E2D3">

<step id="GUID-EE1614C7-B385-55E2-BE5E-1317CFD9F6F9"><cmd/>

<info>create an instance of <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony</apiname></xref>  </info>

</step>

<step id="GUID-3CA05094-4CDC-5EAC-AEB8-7C89B1D8B969"><cmd/>

<info>use <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::GetIndicator()</apiname></xref> to

get the charger information </info>

</step>

<step id="GUID-CD574AFD-9C1B-5E29-953F-1E294037C578"><cmd/>

<info>the <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>GetIndicator()</apiname></xref> returns a

packaged descriptor <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::TIndicatorV1</apiname></xref> </info>

<info> <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>TIndicatorV1</apiname></xref> enables the client

application to determine if the device can detect a charger connection. If

the device can detect a charger connection then the clients can determine

the status of the charger </info>

</step>

<step id="GUID-4CCCBF36-D337-562E-B3D2-5A242A9E6AF4"><cmd/>

<info>pass the enumeration <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>                 CTelephony::EGetIndicatorCancel</apiname></xref> to

cancel the asynchronous <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>GetIndicator()</apiname></xref> request. </info>

</step>

</steps>

<example id="GUID-6504744C-BA63-52E0-AD9C-EA3E4186EBD8"><title>Battery charger

example</title> <codeblock id="GUID-861ED86D-A73E-5499-9534-BB40870487C8" xml:space="preserve">#include &lt;e32base.h&gt;

#include <Etel3rdParty.h>

class CClientApp : public CActive

    { 

private:

    CTelephony* iTelephony;

    CTelephony::TIndicatorV1 iIndicatorV1;

    CTelephony::TIndicatorV1Pckg iIndicatorV1Pckg;

public:

    CClientApp(CTelephony* aTelephony);

    void SomeFunction();

private:

    /*

       These are the pure virtual methods from CActive that  

       MUST be implemented by all active objects

       */

    void RunL();

    void DoCancel();

   };

CClientApp::CClientApp(CTelephony* aTelephony)

    : CActive(EPriorityStandard),

      iTelephony(aTelephony),

      iIndicatorV1Pckg(iIndicatorV1)

    {

    //default constructor

    }

void CClientApp::SomeFunction()

    {

    iTelephony->GetIndicator(iStatus, iIndicatorV1Pckg);

    SetActive();

    }

void CClientApp::RunL()

    {

    if(iStatus==KErrNone)

       {

       if(iIndicatorV1.iCapabilities & CTelephony::KIndChargerConnected)

          {

          // We can detect when a charger is connected

          if(iIndicatorV1.iIndicator & CTelephony::KIndChargerConnected)

             {} // Charger is connected

          else

             {} // Charger is not connected

          }

       else

          {} // We do not know whether a charger is connected

       }

    }

void CClientApp::DoCancel()

    {

    iTelephony->CancelAsync(CTelephony::EGetIndicatorCancel);

    }</codeblock> </example>

</taskbody></task>