How to come back to first activity from third activity?

Question

I have three activities A,B & C.Now the Task i have this form A,B and C,in default android "standard"mode The activities navigation takes place like this A->B->C->B->A.Now What I want here is when I went to Activity C from B,when i backPressed In activity I went to previous Activity i.e.,B But i want to come back to A from C.How to achieve this could anyone tell about this??

,I want to do through intent flags or if possible want to apply launchmodes for the activities,But i am confused which launch mode should i use to achieve this ?-could any one please help me in this

Thanks In Advance

Answer 1

Just launch a new intent and clear the activities in the stack.

 Intent intent = new Intent(this, A.class);
 intent.addFlags(IntentCompat.FLAG_ACTIVITY_CLEAR_TASK);
 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
 startActivity(intent);

Answer 2

Use finish() method when you start Activity C. i.e.

Intent i = new Intent(ActivityB.this, ActivityC.class);
startActivity(i);
finish();