title: Android: Application lifecycle and activities
body: <p>Trying to found some information about Android app life cycle. So imagine the situation: I open app and than lock screen, and in a few hours phone kill my app process. What will happen when I will unlock screen ? What I will see at the screen ? Android home screen ?  or App will restar automatically for me ? Will stack of activities will restore too ? I'll be glad for any help. Thanks...</p>