Question

I have 2 activities: Main and List.

From Main you can open List; from List you can open Main.

I’d like it so that every opening of List does not get saved into the ‘history’. So, pressing back from Main cannot return to List.

Is it possible?

Answer 1

When starting your list’s Activity, set its Intent flags like so:

Intent i = new Intent(...); // Your list's Intent
i.setFlags(i.getFlags() | Intent.FLAG_ACTIVITY_NO_HISTORY); // Adds the FLAG_ACTIVITY_NO_HISTORY flag
startActivity(i);

The FLAG_ACTIVITY_NO_HISTORY flag keeps the new Activity from being added to the history stack.

NB: As @Sam points out, you can use i.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY); instead. There is no functional difference.