How to launch an application with its UID

We can launch any application installed on a device with it's UID rather using the name of the application .

• By this way we can prevent the name clashes.
• No need for searching for the full path of the application.

In mmp file:

LIBRARY        apgrfx.lib // for RApaLsSession
LIBRARY        apparc.lib // for CApaCommandLine, TApaAppInfo

 

Source code

// System Includes
#include <apgcli.h> // for RApaLsSession
#include <apacmdln.h> // for CApaCommandLine
 
// ...
 
// ----------------------------------------------------------------------------
// CMyUtility::LaunchAppL(const TUid aAppUid)
// Find the application with it's UID and if exists then launch the 
// application to the foreground.
// ----------------------------------------------------------------------------
//
void CMyUtility::LaunchAppL(const TUid aAppUid) const
    {
    RApaLsSession apaLsSession;
    User::LeaveIfError(apaLsSession.Connect());
    CleanupClosePushL(apaLsSession);
 
    TApaAppInfo appInfo;
    TInt retVal = apaLsSession.GetAppInfo(appInfo, aAppUid);
 
    if(retVal == KErrNone)
        {
        CApaCommandLine* cmdLine = CApaCommandLine::NewLC();
        cmdLine->SetExecutableNameL(appInfo.iFullName);
        cmdLine->SetCommandL(EApaCommandRun);
        User::LeaveIfError( apaLsSession.StartApp(*cmdLine) );
 
        CleanupStack::PopAndDestroy(cmdLine);
        }
    else
        {
        // The application not found!
        }
 
    CleanupStack::PopAndDestroy(&apaLsSession);
    }