java - Determine whether onPause() was fired by user navigation or by my activity launching another one -

how can determine whether onpause() fired because activity launched new 1 (e.g. photo picker intent) or because user navigated away activity (e.g. pressing home)?

a simple solution have state variable in activity fixed values:

final static int running = 0; final static int called_something = 1;  int state = running: 

then, whenever launch activity:

state = called_something; 

and when returns:

state = running; 

and in onpause():

switch(state) {      case running:          // stuff if home etc pressed          break;      case called_something:          // other stuff          break;      } 

obviously, can extend further scenarios. may wish catch onbackpressed() make sure handle situation understanding possible.