--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-9EE405E2-2D58-525B-8C33-B1EAC0C5A71A.dita Thu Jan 21 18:18:20 2010 +0000
@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License
+"Eclipse Public License v1.0" which accompanies this distribution,
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+ Nokia Corporation - initial contribution.
+Contributors:
+-->
+<!DOCTYPE task
+ PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
+<task xml:lang="en" id="GUID-9EE405E2-2D58-525B-8C33-B1EAC0C5A71A"><title>Network Signal Status Tutorial </title><shortdesc>This tutorial describes how to get the network signal status with the telephony API for applications. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> <steps id="GUID-457C44A1-1947-51F5-9BBB-7DC61AE2BE3D"> <step id="GUID-DC0EA5D5-2F74-5AEA-B96E-727809E45043"><cmd/><info>create new instance of <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony</apiname></xref> </info> </step> <step id="GUID-8BB0592B-C650-5FC1-B32A-3D41778D99A2"><cmd/><info>use <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::GetIndicator()</apiname></xref> to get the network signal status information </info> </step> <step id="GUID-0DE72B37-076D-5C92-9439-DC28F91EDB23"><cmd/><info>you can cancel the asynchronous request with a <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EGetIndicatorCancel</apiname></xref> object </info> </step> <step id="GUID-7841BBB1-8081-5A91-B8D5-5210971EFDB3"><cmd/><info>use the enumeration<xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EIndicatorChange</apiname></xref> to get the notification of any changes to the network signal status </info> </step> <step id="GUID-6E4772BB-C48B-5613-A1C7-5A5A549F4596"><cmd/><info>cancel the notification request with <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EIndicatorChangeCancel</apiname></xref> enumeration. </info> </step> </steps> <example id="GUID-B8922F87-D2CA-5103-B629-628D875CFBBD"><title>Network signal status example</title> <codeblock id="GUID-2EC900DF-10B9-5E63-8F0E-84D396520FDE" xml:space="preserve">#include <e32base.h>
+#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::KIndNetworkAvailable)
+ {
+ // We can detect when a network is present
+ if(iIndicatorV1.iIndicator & CTelephony::KIndNetworkAvailable)
+ {} // Network is present
+ else
+ {} // Network is no present
+ }
+ else
+ {} // We do not know whether a network is present
+ }
+ }
+
+void CClientApp::DoCancel()
+ {
+ iTelephony->CancelAsync(CTelephony::EGetIndicatorCancel);
+ }</codeblock> </example> </taskbody></task>
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