for cocos2d-x(c++) & android

I used below code in AppDelegate.cpp

void AppDelegate::applicationDidEnterBackground() {
    SonarCocosHelper::Notifications::scheduleLocalNotification(0,"test","now",1234);
    Director::getInstance()->stopAnimation();
    }

but in my android phone, noting was happened

so, i checked your SonarFrameworks.cpp

    void Notifications::scheduleLocalNotification( float delay, cocos2d::__String textToDisplay, cocos2d::__String notificationTitle, cocos2d::__String notificationAction , int notificationTag )
    {
    #if(CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
    #elif(CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
        #if SCH_IS_NOTIFICATIONS_ENABLED == true
        IOSCPPHelper::scheduleLocalNotification( delay, textToDisplay, notificationTitle, notificationAction ,notificationTag);
    #endif
    #endif
    }

Where is code for android platform??
is it work without any code? or something i misunderstood??