HomeActivity is started by special timer. This timer is only exist and run when SplashActivity is in focus (it starts when SplashActivity starts (for example, when rotating device)
and stops when SplashActivity closed (or even paused)). Because of restarting SplashActivity and timer when rotating, time for starting second activity needs to be saved/loaded.
If user returns to SplashScreen from HomeScreen, application closes. For testing, timer is up for 10 seconds.