Android: open activity without save into the stack

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

Answer 1

Can you not override the back button on the particular activity to stop the 'return' functionality?

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {

        return true;
    }
    return super.onKeyDown(keyCode, event);
}