android intent - How to back stack activities without recreating them -

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i new android. want understand activity stack.

i have 3 activities in app a(main)->b->c. want navigate a->b->c , c->b->a without restarting them, or changing states (as button in emulator does).

also, when press home button, want app go thebackground , when again launch app clicking icon, last activity should resumed in same state without restarting. mean this: a->b->c->(home button pressed, app went background)->launch app again clicking icon in emulator->c.

plzz me codes coz can't catch theory without demo :)

what describing default behavior in android.

to handle home button don't have code anything. if in activity c , press home button , later come back, still have activity c on top of stack.

if want navigate a->b->c start app activity a, later call startactivity() activity b, , later startactivity() activity c. if in activity c , want go b, call finish() on activity c.


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