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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 &lt;Etel3rdParty.h&gt;

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-&gt;GetIndicator(iStatus, iIndicatorV1Pckg);
    SetActive();
    }

void CClientApp::RunL()
    {
    if(iStatus==KErrNone)
       {
       if(iIndicatorV1.iCapabilities &amp; CTelephony::KIndChargerConnected)
          {
          // We can detect when a charger is connected
          if(iIndicatorV1.iIndicator &amp; CTelephony::KIndChargerConnected)
             {} // Charger is connected
          else
             {} // Charger is not connected
          }
       else
          {} // We do not know whether a charger is connected
       }
    }

void CClientApp::DoCancel()
    {
    iTelephony-&gt;CancelAsync(CTelephony::EGetIndicatorCancel);
    }</codeblock> </example>
</taskbody></task>