If an activity (with WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | 
FLAG_SHOW_WHEN_LOCKED | FLAG_TURN_SCREEN_ON) is launched while the screen 
is off, the order of activity lifecycle callbacks is:
   onCreate, onStart, onResume, onPause, onStop, onRestart, onStart, 
onResume
Why does Android stop the activity and restart it?

I happenned to be calling finish() in onStop() (not realizing the above 
behavior) since I did not want to handle restart*. With this, the order of 
activity lifecycle callbacks is usually:
   onCreate, onStart, onResume, onPause, onStop

However, once in a while, the order of callbacks is:
   onCreate, onStart, onResume, onPause, onStop, onRestart, ...
This seems like a bug. If onStop calls finish(), it should not be followed 
by onRestart, right?

Thanks,
Shri

* The activity displays a snapshot of the current state. If it can be 
restarted, it has to handle the case where the state has changed (which is 
doable, but a bit tricky) and update the UI to display the new state. I was 
attempting to simplify my logic by ensuring that the activity is never 
restarted so that I do not have to worry about a change in state.

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