Question

I would like to know if it’s possible to keep only 1 of each activity in history? I have tab-like interface and when user goes between activities it remembers them in history.

I tried noHistory attribute but it will cause activities to not go into history at all.
Ideally I’d like to have history but make it work like this:

Scenario:
Act1->Act2->Act1->Act2

In “standard” setup when clicking “back” it will unwind like
Act1->Act2->Act1->GONE

In “noHistory” mode it when click “back” it will be:
GONE

I want only 1 copy of each in stack, so it will be:
Act1->GONE

Possible?

Answer 1

When you call startActivity(), add FLAG_ACTIVITY_REORDER_TO_FRONT to the Intent. That will reuse your existing activity instance.