Finish old activity and start a new one or vice versa

Question

I know, that I get the same result with both code snippets

finish();
startActivity(newActivity);

and

startActivity(newActiv         


        

Answer 1

I had the similar issue:

Activity A: singleInstance
Activity B: singleInstance
Activity C: singleInstance

A starts B 
B starts C
C wants to start A:

here if I use:

finish();
startActivity(A);

something wired happens: Activity B comes to foreground instead of A! but if I change the code like this:

startActivity(A);
finish();

everything seems ok and Activity A comes visible.

I don't know what's the problem, but it seems that in the first case, C is finished before executing the startActivity command so that the back stack handles the situation and shows its top activity which is B! but in the second case, everything happens normally.