利用CTelephony获取电量,充电和手机信号的信息 转 - [symbian]

利用CTelephony获取电量,充电和手机信号的信息 转 - [symbian]

2009-07-06

// StateVarObserver.h

// Constants

const TInt KUidBatteryBarsValue = 0x100052D3;

const TUid KUidBatteryBars ={KUidBatteryBarsValue};

// KUidChargerStatus defined in <sacls.h>

// KUidNetworkStrength defined in <sacls.h>

// monitoring the info

class CStateVarObserver : public CActive

{

...

private:

CTelephony * iTelephony; //For network, battery and charger information

TUid iObservingUid; //to know what we're observing

TInt iObservedValue; //the value of what we're observing

//Network signal strength information

CTelephony::TSignalStrengthV1 iSigStrengthV1;

CTelephony::TSignalStrengthV1Pckg iSigStrengthV1Pckg;

//Battery information

CTelephony::TBatteryInfoV1 iBatteryInfoV1;

CTelephony::TBatteryInfoV1Pckg iBatteryInfoV1Pckg;

//For charger information

CTelephony::TIndicatorV1 iIndicatorV1;

CTelephony::TIndicatorV1Pckg iIndicatorV1Pckg;

};

// StateVarObserver.cpp

// Constructor

CStateVarObserver::CStateVarObserver(TUid aUid) : CActive(EPriorityStandard),

iSigStrengthV1Pckg(iSigStrengthV1),

iBatteryInfoV1Pckg(iBatteryInfoV1),

iIndicatorV1Pckg(iIndicatorV1),

iObservingUid(aUid)

{

//nothing to do

}

// 2nd phase constructor

void CStateVarObserver::ConstructL()

{

iTelephony = CTelephony::NewL();

// Add this active object to the active scheduler

CActiveScheduler::Add(this);

}

void CStateVarObserver::StartL()

{

if ( iObservingUid == KUidNetworkStrength )

{

// 获取手机信号强度

iTelephony.GetSignalStrength(iStatus, iSigStrengthV1Pckg);

}

else if ( iObservingUid == KUidBatteryBars )

{

// 获取手机电量信息

iTelephony.GetBatteryInfo(iStatus,iBatteryInfoV1Pckg);

}

else if ( iObservingUid == KUidChargerStatus )

{

// 获取手机的指示器信息，详见SDK

iTelephony.GetIndicator(iStatus, iIndicatorV1Pckg);

}

else

{

User::Leave(KErrNotSupported);

}

SetActive();

}

// Handles request completion - called by the Active Scheduler

void CStateVarObserver::RunL()

{

if( iStatus.Int() != KErrNone )

{

//TODO error handling

return;

}

//Read once, now register to observe changes

if ( iObservingUid == KUidNetworkStrength )

{

iObservedValue = iSigStrengthV1.iBar;

iTelephony.NotifyChange(iStatus,CTelephony::ESignalStrengthChange,

iSigStrengthV1Pckg);

}

else if ( iObservingUid == KUidBatteryBars )

{

// iBatteryInfoV1.iChargeLevel gives k*14 ( k = {0,1,2,3,4,5,6,7} )

iObservedValue = iBatteryInfoV1.iChargeLevel;

iTelephony.NotifyChange(iStatus,CTelephony::EBatteryInfoChange,

iBatteryInfoV1Pckg);

}

else if ( iObservingUid == KUidChargerStatus )

{

//this same technique can be used to see if there's

//network available (with KIndNetworkAvailable)

//and if there's a call in progress (KIndCallInProgress)

if(iIndicatorV1.iIndicator & CTelephony::KIndChargerConnected)

{

iObservedValue = 1;

}

else

{

iObservedValue = 0;

}

iTelephony.NotifyChange(iStatus,CTelephony::EIndicatorChange,

iIndicatorV1Pckg);

}

else

{

//TODO error handling

}

SetActive();

}

// Cancel outstanding request - called by Cancel()

void CStateVarObserver::DoCancel()

{

if ( iObservingUid == KUidNetworkStrength )

{

iTelephony.CancelAsync(CTelephony::EGetSignalStrengthCancel);

iTelephony.CancelAsync(CTelephony::ESignalStrengthChangeCancel);

}

else if ( iObservingUid == KUidBatteryBars )

{

iTelephony.CancelAsync(CTelephony::EGetBatteryInfoCancel);

iTelephony.CancelAsync(CTelephony::EBatteryInfoChangeCancel);

}

else if ( iObservingUid == KUidChargerStatus )

{

iTelephony.CancelAsync(CTelephony::EGetIndicatorCancel);

iTelephony.CancelAsync(CTelephony::EIndicatorChangeCancel);

}

}